{"id":30444,"date":"2026-03-26T11:03:17","date_gmt":"2026-03-26T10:03:17","guid":{"rendered":"https:\/\/piseo.fr\/?p=30444"},"modified":"2026-03-26T11:03:21","modified_gmt":"2026-03-26T10:03:21","slug":"optical-design-of-a-multispectral-zoom","status":"publish","type":"post","link":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/","title":{"rendered":"Optical design of a multispectral zoom"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Combining optical performance, mechanical robustness and complexity management in a single multispectral optical system: this is the challenge taken up by PIS\u00c9O with the visible-NIR-SWIR zoom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR) and short-wave infrared (SWIR) is a major technological challenge. Few companies are able to combine optical performance, mechanical robustness and industrial viability over such a broad spectrum.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PIS\u00c9O has demonstrated this with a multispectral continuous zoom project, illustrating its unique know-how in the design of complex optical systems, while meeting demanding specifications: precise numerical aperture, continuous x15 zoom factor, strict control of maximum authorized distortion, high MTF (Modulation Transfer Function: the system&#8217;s ability to reproduce fine details with contrast), while respecting constraints on size and field-of-view (FOV\/DOV, i.e. the extent and depth of field of the observable scene).<\/p>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-56732b7 is-style-plain\" data-block-id=\"56732b7\"><style>.stk-56732b7 {border-style:solid !important;border-color:#dfdad1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:1px !important;border-left-width:0px !important;padding-bottom:24px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-fd1a06d stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"fd1a06d\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-fd1a06d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-fd1a06d-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-f0b5854\" data-block-id=\"f0b5854\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f386461\" id=\"the-major-challenges-of-a-multispectral-zoom\" data-block-id=\"f386461\"><h2 class=\"stk-block-heading__text\">The major challenges of a multispectral zoom<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-5eb691c\" data-block-id=\"5eb691c\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><linearGradient id=\"linear-gradient-5eb691c\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-5-eb-691-c-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-5-eb-691-c-color-2)\"><\/stop><\/linearGradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6914807 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"6914807\"><style>.stk-6914807-container{padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6914807-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6914807-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0aacc7f\" data-block-id=\"0aacc7f\"><p class=\"stk-block-text__text\"><strong>Chromatic correction across a broad spectrum<\/strong><\/p><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Controlling chromaticity across a spectral range from a few hundred nanometers to more than one micron, without resorting to fragile fluorite glasses, required in-depth research into optical material combinations. Thanks to bibliographic and simulation work, PIS\u00c9O has selected special glasses that are transparent over the entire visible-NIR-SWIR spectrum, optimizing their dispersion for quasi-apochromatic &#8211; correcting out-of-focus errors across three or more wavelengths, consistent with numerical aperture and image quality constraints.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Controlling geometric aberrations<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The system had to maintain parfocality &#8211; the ability to maintain focus when changing focal length &#8211; between the visible, NIR and SWIR channels, despite their natural focusing differences, throughout the entire focal range. The integration of aspherical lenses has made it possible to effectively correct spherical aberrations, coma &#8211; the comma-shaped distortion of light points at the edge of the image &#8211; and astigmatism without multiplying the number of optical elements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The result: a compact, high-performance system that respects space constraints and produces sharp images across the entire field, with controlled distortion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mechanical and compactness constraints<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The zoom lens featured synchronized moving groups, with a high zoom ratio (x15), imposing significant mechanical constraints. PIS\u00c9O optimized the number of moving groups and types of movement, while anticipating manufacturing limitations: choice of lenses available from suppliers, limitation of costly aspheric surfaces, reduction in the variety of materials to simplify sourcing and guarantee manufacturability, while maintaining the expected MTF performance.<\/p>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-2d211ec is-style-plain\" data-block-id=\"2d211ec\"><style>.stk-2d211ec {border-style:solid !important;border-color:#dfdad1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:1px !important;border-left-width:0px !important;padding-bottom:24px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-06cec8a stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"06cec8a\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-06cec8a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-06cec8a-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-ef7c832\" data-block-id=\"ef7c832\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-a8148f5\" id=\"optical-simulation-for-design\" data-block-id=\"a8148f5\"><h2 class=\"stk-block-heading__text\">Optical simulation for design<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-fa47865\" data-block-id=\"fa47865\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><linearGradient id=\"linear-gradient-fa47865\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-fa-47865-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-fa-47865-color-2)\"><\/stop><\/linearGradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-2ab8829 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"2ab8829\"><style>.stk-2ab8829-container{padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-2ab8829-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-2ab8829-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ca093ef\" data-block-id=\"ca093ef\"><p class=\"stk-block-text__text\">PIS\u00c9O mobilized the powerful tools of Zemax OpticStudio, one of the world&#8217;s leading optical design software packages. This ray tracing tool was used to simulate and optimize every parameter: curvatures, thicknesses, spacings, indices, spectral performance, FOV\/DOV and MTF quality, in multispectral and with parfocality.<\/p><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A single file allows simultaneous analysis of different focal lengths and spectral bands, facilitating iteration, archiving and optimization.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The design followed a complex process: firstly, the system was preliminary design to select a robust optical combination (balancing the groups to ensure feasibility), then aberrations in each group were corrected, and finally achromatization was carried out, again by sub-assembly, using a selection of lenses to cover the entire target spectrum.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Once the system was complete, a further optimization phase was carried out to find the best compromise between complexity and performance (curvature, thickness at center or edge, bonded or unbonded elements, diversity of lenses, etc.).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This meticulous optimization phase led to a high-performance theoretical system, which PIS\u00c9O then made realistic through tolerancing studies, in order to further reduce the points of sensitivity of the assembly or arbitrate between variants: statistical analysis of the variations expected in production, to guarantee that a real product would remain compliant with requirements, even taking into account manufacturing and assembly margins.<\/p>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-fa3ac2b is-style-plain\" data-block-id=\"fa3ac2b\"><style>.stk-fa3ac2b {border-style:solid !important;border-color:#dfdad1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:1px !important;border-left-width:0px !important;padding-bottom:24px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-79bafaa stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"79bafaa\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-79bafaa-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-79bafaa-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-b7795b1\" data-block-id=\"b7795b1\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1512638\" id=\"demanding-applications\" data-block-id=\"1512638\"><h2 class=\"stk-block-heading__text\">Demanding applications<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-dbc017d\" data-block-id=\"dbc017d\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><linearGradient id=\"linear-gradient-dbc017d\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-dbc-017-d-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-dbc-017-d-color-2)\"><\/stop><\/linearGradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-31cbd38 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"31cbd38\"><style>.stk-31cbd38-container{padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-31cbd38-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-31cbd38-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-19b43bf\" data-block-id=\"19b43bf\"><p class=\"stk-block-text__text\">This zoom lens was to be mounted on maritime or aeronautical platforms, for long-distance observation: obstacle spotting, area surveillance, defense equipment. These applications called for a product that was robust (no fragile lenses), compact (integrated into an optronic ball), and ultra-high-performance (resolution, image sharpness and controlled distortion across the entire spectrum). The wide spectral range enables long-distance tracking, thanks to the reduced scattering of the atmosphere in SWIR, as well as identification (through combination with visible light).<\/p><\/div>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-0fb19b8 is-style-plain\" data-block-id=\"0fb19b8\"><style>.stk-0fb19b8 {border-style:solid !important;border-color:#dfdad1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:1px !important;border-left-width:0px !important;padding-bottom:24px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-b44f101 stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"b44f101\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-b44f101-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-b44f101-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-5618365\" data-block-id=\"5618365\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-4fa0003\" id=\"why-does-piseo-make-the-difference\" data-block-id=\"4fa0003\"><h2 class=\"stk-block-heading__text\">Why does PIS\u00c9O make the difference?<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-265d32d\" data-block-id=\"265d32d\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><linearGradient id=\"linear-gradient-265d32d\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-265-d-32-d-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-265-d-32-d-color-2)\"><\/stop><\/linearGradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6f9a542 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"6f9a542\"><style>.stk-6f9a542-container{padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6f9a542-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6f9a542-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-737b07b\" data-block-id=\"737b07b\"><p class=\"stk-block-text__text\">Where others have failed to meet our customer&#8217;s needs, PIS\u00c9O has found innovative solutions, thanks to:<\/p><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Their partners specialized in the manufacture of complex lenses for wide spectral ranges.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The opto-mechanical design skills of its engineers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Their in-depth mastery of software tools and optimization methods.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Their ability to take industrial constraints and integration aspects into account right from the design stage.<\/p>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\">PIS\u00c9O is a recognized partner for the development of complex optical systems, able to intervene at every stage: from initial idea to market-ready product. Working with PIS\u00c9O means benefiting from rigorous support, cutting-edge expertise and the ability to transform technical challenges into concrete, reliable solutions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Combining optical performance, mechanical robustness and complexity management in a single multispectral optical system: this is the challenge taken up by PIS\u00c9O with the visible-NIR-SWIR zoom. Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR) and short-wave infrared (SWIR) is a major technological challenge. Few companies are able to combine optical performance, mechanical [&hellip;]<\/p>\n","protected":false},"author":171492485,"featured_media":30373,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[7011,7004,7007],"tags":[],"class_list":["post-30444","post","type-post","status-publish","format-standard","has-post-thumbnail","category-defense-and-security-posts","category-optical-consulting-engineering-posts","category-our-projects"],"featured_image_src":"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg","author_info":{"display_name":"piseophotonics","author_link":"https:\/\/piseo.fr\/en\/author\/piseophotonics\/"},"featured_image_urls_v2":{"full":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg",2560,1920,false],"thumbnail":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-150x150.jpeg",150,150,true],"medium":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-300x225.jpeg",300,225,true],"medium_large":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-768x576.jpeg",696,522,true],"large":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1024x768.jpeg",696,522,true],"1536x1536":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1536x1152.jpeg",1536,1152,true],"2048x2048":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-2048x1536.jpeg",2048,1536,true],"td_150x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-150x113.jpeg",150,113,true],"td_150x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-300x225.jpeg",300,225,true],"td_218x150":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-218x150.jpeg",218,150,true],"td_218x150_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-436x300.jpeg",436,300,true],"td_300x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-300x225.jpeg",300,225,true],"td_300x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-600x450.jpeg",600,450,true],"td_324x400":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-324x400.jpeg",324,400,true],"td_324x400_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-648x800.jpeg",648,800,true],"td_485x360":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-485x360.jpeg",485,360,true],"td_485x360_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-970x720.jpeg",970,720,true],"td_696x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-696x522.jpeg",696,522,true],"td_696x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1392x1044.jpeg",1392,1044,true],"td_1068x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1068x801.jpeg",1068,801,true],"td_1068x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-2136x1602.jpeg",2136,1602,true],"td_1920x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1920x1440.jpeg",1920,1440,true],"td_1920x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-3840x2880.jpeg",3840,2880,true],"ultp_layout_landscape_large":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1200x800.jpeg",1200,800,true],"ultp_layout_landscape":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-870x570.jpeg",870,570,true],"ultp_layout_portrait":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-600x900.jpeg",600,900,true],"ultp_layout_square":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-600x600.jpeg",600,600,true]},"post_excerpt_stackable_v2":"<p>Combining optical performance, mechanical robustness and complexity management in a single multispectral optical system: this is the challenge taken up by PIS\u00c9O with the visible-NIR-SWIR zoom. Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR) and short-wave infrared (SWIR) is a major technological challenge. Few companies are able to combine optical performance, mechanical robustness and industrial viability over such a broad spectrum. PIS\u00c9O has demonstrated this with a multispectral continuous zoom project, illustrating its unique know-how in the design of complex optical systems, while meeting demanding specifications: precise numerical aperture, continuous x15 zoom factor, strict control of maximum&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/piseo.fr\/en\/markets-posts\/defense-and-security-posts\/\" rel=\"category tag\">Defense and security<\/a>, <a href=\"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/\" rel=\"category tag\">Optical consulting and engineering<\/a>, <a href=\"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/our-projects\/\" rel=\"category tag\">Our projects<\/a>","author_info_v2":{"name":"piseophotonics","url":"https:\/\/piseo.fr\/en\/author\/piseophotonics\/"},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Optical design of a multispectral zoom - PIS\u00c9O<\/title>\n<meta name=\"description\" content=\"Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) is a\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Optical design of a multispectral zoom - PIS\u00c9O\" \/>\n<meta property=\"og:description\" content=\"Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) is a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/\" \/>\n<meta property=\"og:site_name\" content=\"PIS\u00c9O\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-26T10:03:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-26T10:03:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"piseophotonics\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"piseophotonics\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/\"},\"author\":{\"name\":\"piseophotonics\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#\\\/schema\\\/person\\\/d8c9a982b00ab2f68000c47b85f80f94\"},\"headline\":\"Optical design of a multispectral zoom\",\"datePublished\":\"2026-03-26T10:03:17+00:00\",\"dateModified\":\"2026-03-26T10:03:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/\"},\"wordCount\":805,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/piseo.fr\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/optique-telephone-scaled-e1758298402847.jpeg\",\"articleSection\":[\"Defense and security\",\"Optical consulting and engineering\",\"Our projects\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/\",\"url\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/\",\"name\":\"Optical design of a multispectral zoom - PIS\u00c9O\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/piseo.fr\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/optique-telephone-scaled-e1758298402847.jpeg\",\"datePublished\":\"2026-03-26T10:03:17+00:00\",\"dateModified\":\"2026-03-26T10:03:21+00:00\",\"description\":\"Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) is a\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#primaryimage\",\"url\":\"https:\\\/\\\/piseo.fr\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/optique-telephone-scaled-e1758298402847.jpeg\",\"contentUrl\":\"https:\\\/\\\/piseo.fr\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/optique-telephone-scaled-e1758298402847.jpeg\",\"width\":2560,\"height\":1920,\"caption\":\"Modern lens of smartphone camera structure. New features for a smartphone camera concept. 3d illustration\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/optical-consulting-engineering-posts\\\/optical-design-of-a-multispectral-zoom\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/piseo.fr\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Optical design of a multispectral zoom\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/piseo.fr\\\/en\\\/\",\"name\":\"PIS\u00c9O\",\"description\":\"Design and Characterization of Innovative Optical Systems\",\"publisher\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/piseo.fr\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#organization\",\"name\":\"PIS\u00c9O\",\"url\":\"https:\\\/\\\/piseo.fr\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/piseo.fr\\\/wp-content\\\/uploads\\\/2022\\\/03\\\/PISEO-Logo-RVB.png\",\"contentUrl\":\"https:\\\/\\\/piseo.fr\\\/wp-content\\\/uploads\\\/2022\\\/03\\\/PISEO-Logo-RVB.png\",\"width\":1772,\"height\":682,\"caption\":\"PIS\u00c9O\"},\"image\":{\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/piseo\\\/?originalSubdomain=fr\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/piseo.fr\\\/en\\\/#\\\/schema\\\/person\\\/d8c9a982b00ab2f68000c47b85f80f94\",\"name\":\"piseophotonics\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/1a31f1b561b50adbd680676ff38e3e8a5adac81258e64c1c2efd1f5ba803ab0a?s=96&d=identicon&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/1a31f1b561b50adbd680676ff38e3e8a5adac81258e64c1c2efd1f5ba803ab0a?s=96&d=identicon&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/1a31f1b561b50adbd680676ff38e3e8a5adac81258e64c1c2efd1f5ba803ab0a?s=96&d=identicon&r=g\",\"caption\":\"piseophotonics\"},\"sameAs\":[\"http:\\\/\\\/piseofr.wordpress.com\"],\"url\":\"https:\\\/\\\/piseo.fr\\\/en\\\/author\\\/piseophotonics\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Optical design of a multispectral zoom - PIS\u00c9O","description":"Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) is a","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/","og_locale":"en_US","og_type":"article","og_title":"Optical design of a multispectral zoom - PIS\u00c9O","og_description":"Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) is a","og_url":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/","og_site_name":"PIS\u00c9O","article_published_time":"2026-03-26T10:03:17+00:00","article_modified_time":"2026-03-26T10:03:21+00:00","og_image":[{"width":2560,"height":1920,"url":"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg","type":"image\/jpeg"}],"author":"piseophotonics","twitter_card":"summary_large_image","twitter_misc":{"Written by":"piseophotonics","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#article","isPartOf":{"@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/"},"author":{"name":"piseophotonics","@id":"https:\/\/piseo.fr\/en\/#\/schema\/person\/d8c9a982b00ab2f68000c47b85f80f94"},"headline":"Optical design of a multispectral zoom","datePublished":"2026-03-26T10:03:17+00:00","dateModified":"2026-03-26T10:03:21+00:00","mainEntityOfPage":{"@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/"},"wordCount":805,"commentCount":0,"publisher":{"@id":"https:\/\/piseo.fr\/en\/#organization"},"image":{"@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#primaryimage"},"thumbnailUrl":"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg","articleSection":["Defense and security","Optical consulting and engineering","Our projects"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/","url":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/","name":"Optical design of a multispectral zoom - PIS\u00c9O","isPartOf":{"@id":"https:\/\/piseo.fr\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#primaryimage"},"image":{"@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#primaryimage"},"thumbnailUrl":"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg","datePublished":"2026-03-26T10:03:17+00:00","dateModified":"2026-03-26T10:03:21+00:00","description":"Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR), and short-wave infrared (SWIR) is a","breadcrumb":{"@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#primaryimage","url":"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg","contentUrl":"https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg","width":2560,"height":1920,"caption":"Modern lens of smartphone camera structure. New features for a smartphone camera concept. 3d illustration"},{"@type":"BreadcrumbList","@id":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/optical-design-of-a-multispectral-zoom\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/piseo.fr\/en\/"},{"@type":"ListItem","position":2,"name":"Optical design of a multispectral zoom"}]},{"@type":"WebSite","@id":"https:\/\/piseo.fr\/en\/#website","url":"https:\/\/piseo.fr\/en\/","name":"PIS\u00c9O","description":"Design and Characterization of Innovative Optical Systems","publisher":{"@id":"https:\/\/piseo.fr\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/piseo.fr\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/piseo.fr\/en\/#organization","name":"PIS\u00c9O","url":"https:\/\/piseo.fr\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/piseo.fr\/en\/#\/schema\/logo\/image\/","url":"https:\/\/piseo.fr\/wp-content\/uploads\/2022\/03\/PISEO-Logo-RVB.png","contentUrl":"https:\/\/piseo.fr\/wp-content\/uploads\/2022\/03\/PISEO-Logo-RVB.png","width":1772,"height":682,"caption":"PIS\u00c9O"},"image":{"@id":"https:\/\/piseo.fr\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/piseo\/?originalSubdomain=fr"]},{"@type":"Person","@id":"https:\/\/piseo.fr\/en\/#\/schema\/person\/d8c9a982b00ab2f68000c47b85f80f94","name":"piseophotonics","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/1a31f1b561b50adbd680676ff38e3e8a5adac81258e64c1c2efd1f5ba803ab0a?s=96&d=identicon&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/1a31f1b561b50adbd680676ff38e3e8a5adac81258e64c1c2efd1f5ba803ab0a?s=96&d=identicon&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/1a31f1b561b50adbd680676ff38e3e8a5adac81258e64c1c2efd1f5ba803ab0a?s=96&d=identicon&r=g","caption":"piseophotonics"},"sameAs":["http:\/\/piseofr.wordpress.com"],"url":"https:\/\/piseo.fr\/en\/author\/piseophotonics\/"}]}},"uagb_featured_image_src":{"full":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-scaled-e1758298402847.jpeg",2560,1920,false],"thumbnail":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-150x150.jpeg",150,150,true],"medium":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-300x225.jpeg",300,225,true],"medium_large":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-768x576.jpeg",696,522,true],"large":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1024x768.jpeg",696,522,true],"1536x1536":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1536x1152.jpeg",1536,1152,true],"2048x2048":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-2048x1536.jpeg",2048,1536,true],"td_150x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-150x113.jpeg",150,113,true],"td_150x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-300x225.jpeg",300,225,true],"td_218x150":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-218x150.jpeg",218,150,true],"td_218x150_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-436x300.jpeg",436,300,true],"td_300x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-300x225.jpeg",300,225,true],"td_300x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-600x450.jpeg",600,450,true],"td_324x400":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-324x400.jpeg",324,400,true],"td_324x400_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-648x800.jpeg",648,800,true],"td_485x360":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-485x360.jpeg",485,360,true],"td_485x360_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-970x720.jpeg",970,720,true],"td_696x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-696x522.jpeg",696,522,true],"td_696x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1392x1044.jpeg",1392,1044,true],"td_1068x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1068x801.jpeg",1068,801,true],"td_1068x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-2136x1602.jpeg",2136,1602,true],"td_1920x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1920x1440.jpeg",1920,1440,true],"td_1920x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-3840x2880.jpeg",3840,2880,true],"ultp_layout_landscape_large":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-1200x800.jpeg",1200,800,true],"ultp_layout_landscape":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-870x570.jpeg",870,570,true],"ultp_layout_portrait":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-600x900.jpeg",600,900,true],"ultp_layout_square":["https:\/\/piseo.fr\/wp-content\/uploads\/2025\/09\/optique-telephone-600x600.jpeg",600,600,true]},"uagb_author_info":{"display_name":"piseophotonics","author_link":"https:\/\/piseo.fr\/en\/author\/piseophotonics\/"},"uagb_comment_info":0,"uagb_excerpt":"Combining optical performance, mechanical robustness and complexity management in a single multispectral optical system: this is the challenge taken up by PIS\u00c9O with the visible-NIR-SWIR zoom. Developing a multispectral optical zoom covering the visible (VIS), near-infrared (NIR) and short-wave infrared (SWIR) is a major technological challenge. Few companies are able to combine optical performance, mechanical&hellip;","_links":{"self":[{"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/posts\/30444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/users\/171492485"}],"replies":[{"embeddable":true,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/comments?post=30444"}],"version-history":[{"count":1,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/posts\/30444\/revisions"}],"predecessor-version":[{"id":30446,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/posts\/30444\/revisions\/30446"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/media\/30373"}],"wp:attachment":[{"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/media?parent=30444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/categories?post=30444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/piseo.fr\/en\/wp-json\/wp\/v2\/tags?post=30444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}