{"id":29843,"date":"2024-09-25T06:52:36","date_gmt":"2024-09-25T05:52:36","guid":{"rendered":"https:\/\/piseo.fr\/?p=29843"},"modified":"2024-09-25T07:01:15","modified_gmt":"2024-09-25T06:01:15","slug":"improving-the-uniformity-of-a-vehicles-led-taillight","status":"publish","type":"post","link":"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/improving-the-uniformity-of-a-vehicles-led-taillight\/","title":{"rendered":"Improving the uniformity of a vehicle\u2019s LED taillight"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">At the request of a Tier 1 automotive supplier, PIS\u00c9O intervened to improve the uniformity of a vehicle LED taillight while achieving the required luminance levels. Although LEDs offer many advantages (energy efficiency, longevity, flexible design), they present challenges in achieving quality lighting systems, including uniform luminous surfaces. Thanks to their mastery of lighting system design, particularly those using LED light guides, PIS\u00c9O engineers were able to meet the challenge.<\/p>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-b8dea9b is-style-plain\" data-block-id=\"b8dea9b\"><style>.stk-b8dea9b {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-f02b690 stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"f02b690\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f02b690-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-f02b690-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-db1bdc2\" data-block-id=\"db1bdc2\"><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-5a6a2f4\" id=\"understanding-the-origin-of-optical-defects\" data-block-id=\"5a6a2f4\"><h2 class=\"stk-block-heading__text\">Understanding the origin of optical defects<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-89371e8\" data-block-id=\"89371e8\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><linearGradient id=\"linear-gradient-89371e8\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-89371-e-8-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-89371-e-8-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-8f46c85 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"8f46c85\"><style>.stk-8f46c85-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-8f46c85-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-8f46c85-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-632cdef\" data-block-id=\"632cdef\"><p class=\"stk-block-text__text\">Optical defects observed in LED taillights, such as uneven lighting, excessive bright spots, or shadow areas, are often due to inefficient light distribution. These anomalies can be caused by an inadequate arrangement of LEDs, poorly designed diffusers, or <a href=\"https:\/\/piseo.fr\/en\/optical-consulting-engineering-posts\/light-guide-design\/\">light guides <\/a>that do not direct the light correctly.<br>To identify the precise causes, PIS\u00c9O engineers followed a rigorous methodology. The first step consisted of a luminance mapping in <a href=\"https:\/\/piseo.fr\/en\/optical-laboratory-posts\/\">the laboratory<\/a>, which provided a visualization of the distribution of light over the entire surface of the lamp, highlighting the problem areas. A critical analysis of the lamp construction was then conducted, focusing on the physical design of the optical components, including the arrangement of the LEDs and the materials used.<br>\u00a0<br>A key point of the analysis concerns the geometry of the light guides. The engineers thus examined in detail the structure of the guides to identify design defects that could lead to light leaks. These leaks often result from poor light guidance, where light escapes or disperses in an uncontrolled manner, causing an irregular distribution. Finally, the optical system was modeled in <a href=\"https:\/\/www.synopsys.com\/optical-solutions\/lighttools.html\">LightTools<\/a>, where a simulation allowed the engineers to locate the sources of the defects and propose optimal solutions.<\/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-9f2f11d is-style-plain\" data-block-id=\"9f2f11d\"><style>.stk-9f2f11d {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-58ddb52 stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"58ddb52\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-58ddb52-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-58ddb52-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-6827c1d\" data-block-id=\"6827c1d\"><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-ee9f553\" id=\"optimized-optical-geometry-to-eliminate-visual-defects\" data-block-id=\"ee9f553\"><h2 class=\"stk-block-heading__text\">Optimized optical geometry to eliminate visual defects<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-f2a1c4f\" data-block-id=\"f2a1c4f\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><linearGradient id=\"linear-gradient-f2a1c4f\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-f-2-a-1-c-4-f-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-f-2-a-1-c-4-f-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-8be4969 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"8be4969\"><style>.stk-8be4969-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-8be4969-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-8be4969-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-392718a\" data-block-id=\"392718a\"><p class=\"stk-block-text__text\">After identifying the causes of the defects, PIS\u00c9O engineers devised solutions and integrated geometric modifications to the optical surfaces of the light. The latter was designed to guarantee high coupling efficiency of the LEDs with the optical guides, thus allowing optimal use of their luminous flux. The shapes of the optical guides were optimized to guarantee total internal reflection (TIR) of the light rays.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\">Thanks to the recognized expertise of its engineers in optical design and the use of advanced laboratory simulation and characterization methods, PIS\u00c9O successfully met this technical challenge. The team was able not only to meet the customer&#8217;s rigorous requirements but also to produce results that exceeded expectations. The optical systems designed and validated by PIS\u00c9O offer superior performance in terms of luminance, contrast, and chromatic precision, thus contributing significantly to the perceived quality of the car manufacturer&#8217;s vehicles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If, like this satisfied customer, you wish to design and produce a high-quality image projection solution, whilst taking into account your industrial constraints, do not hesitate to contact us to tell us about your project.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>At the request of a Tier 1 automotive supplier, PIS\u00c9O intervened to improve the uniformity of a vehicle LED taillight while achieving the required luminance levels. Although LEDs offer many advantages (energy efficiency, longevity, flexible design), they present challenges in achieving quality lighting systems, including uniform luminous surfaces. Thanks to their mastery of lighting system [&hellip;]<\/p>\n","protected":false},"author":171492485,"featured_media":29837,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[7012,6986,7009,7004,7007,6989],"tags":[],"class_list":["post-29843","post","type-post","status-publish","format-standard","has-post-thumbnail","category-automotive-posts","category-articles-conseil-ingenierie-optique","category-markets-posts","category-optical-consulting-engineering-posts","category-our-projects","category-nos-projets"],"featured_image_src":"https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-scaled.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\/2024\/09\/AdobeStock_747161205-scaled.jpeg",2560,1435,false],"thumbnail":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-150x150.jpeg",150,150,true],"medium":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-300x168.jpeg",300,168,true],"medium_large":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-768x430.jpeg",696,390,true],"large":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-1024x574.jpeg",696,390,true],"1536x1536":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-1536x861.jpeg",1536,861,true],"2048x2048":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-2048x1148.jpeg",2048,1148,true],"td_150x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-150x84.jpeg",150,84,true],"td_150x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-300x168.jpeg",300,168,true],"td_218x150":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-218x150.jpeg",218,150,true],"td_218x150_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-436x300.jpeg",436,300,true],"td_300x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-300x168.jpeg",300,168,true],"td_300x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-600x336.jpeg",600,336,true],"td_324x400":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-324x400.jpeg",324,400,true],"td_324x400_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-648x800.jpeg",648,800,true],"td_485x360":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-485x360.jpeg",485,360,true],"td_485x360_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-970x720.jpeg",970,720,true],"td_696x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-696x390.jpeg",696,390,true],"td_696x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-1392x780.jpeg",1392,780,true],"td_1068x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-1068x599.jpeg",1068,599,true],"td_1068x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-2136x1197.jpeg",2136,1197,true],"td_1920x0":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-1920x1076.jpeg",1920,1076,true],"td_1920x0_retina":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-3840x2152.jpeg",3840,2152,true],"ultp_layout_landscape_large":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-1200x800.jpeg",1200,800,true],"ultp_layout_landscape":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-870x570.jpeg",870,570,true],"ultp_layout_portrait":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-600x900.jpeg",600,900,true],"ultp_layout_square":["https:\/\/piseo.fr\/wp-content\/uploads\/2024\/09\/AdobeStock_747161205-600x600.jpeg",600,600,true]},"post_excerpt_stackable_v2":"<p>At the request of a Tier 1 automotive supplier, PIS\u00c9O intervened to improve the uniformity of a vehicle LED taillight while achieving the required luminance levels. Although LEDs offer many advantages (energy efficiency, longevity, flexible design), they present challenges in achieving quality lighting systems, including uniform luminous surfaces. Thanks to their mastery of lighting system design, particularly those using LED light guides, PIS\u00c9O engineers were able to meet the challenge. Understanding the origin of optical defects Optical defects observed in LED taillights, such as uneven lighting, excessive bright spots, or shadow areas, are often due to inefficient light distribution. These&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/piseo.fr\/en\/markets-posts\/automotive-posts\/\" rel=\"category tag\">Automotive<\/a>, <a href=\"https:\/\/piseo.fr\/articles-conseil-ingenierie-optique\/\" rel=\"category tag\">Conseil et ing\u00e9nierie optique<\/a>, <a href=\"https:\/\/piseo.fr\/en\/markets-posts\/\" rel=\"category tag\">Markets<\/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>, <a href=\"https:\/\/piseo.fr\/articles-conseil-ingenierie-optique\/nos-projets\/\" rel=\"category tag\">Projets<\/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 - 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