{"id":6743,"date":"2025-06-26T11:36:28","date_gmt":"2025-06-26T11:36:28","guid":{"rendered":"https:\/\/www.surface-controls.com\/optical-systems\/case-study\/"},"modified":"2025-06-27T05:25:15","modified_gmt":"2025-06-27T05:25:15","slug":"case-study","status":"publish","type":"page","link":"https:\/\/www.surface-controls.com\/en\/optical-systems\/case-study\/","title":{"rendered":"Case study"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:0px;--awb-padding-bottom:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last\" style=\"--awb-bg-size:cover;--awb-margin-bottom:0px;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-title title fusion-title-1 fusion-title-center fusion-title-text fusion-title-size-one\" style=\"--awb-margin-bottom:30px;\"><div class=\"title-sep-container title-sep-container-left\"><div class=\"title-sep sep- sep-solid\" style=\"border-color:#e0dede;\"><\/div><\/div><span class=\"awb-title-spacer\"><\/span><h1 class=\"fusion-title-heading title-heading-center fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:34;line-height:1.41;\">Case study on optical systems<\/h1><span class=\"awb-title-spacer\"><\/span><div class=\"title-sep-container title-sep-container-right\"><div class=\"title-sep sep- sep-solid\" style=\"border-color:#e0dede;\"><\/div><\/div><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:0px;margin-bottom:0px;width:100%;\"><div class=\"fusion-separator-border sep-single sep-solid\" style=\"--awb-height:20px;--awb-amount:20px;--awb-sep-color:#870c30;border-color:#870c30;border-top-width:5px;\"><\/div><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last green-border rounded-border\" style=\"--awb-padding-top:5%;--awb-padding-right:5%;--awb-padding-bottom:5%;--awb-padding-left:5%;--awb-bg-color:#ffffff;--awb-bg-color-hover:#ffffff;--awb-bg-size:cover;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-1\"><h2>Automated testing system for ophthalmic lenses<\/h2>\n<p><strong>Uvex, Plant F\u00fcrth<\/strong><\/p>\n<\/div><div class=\"fusion-video fusion-selfhosted-video\" style=\"max-width:100%;\"><div class=\"video-wrapper\"><video playsinline=\"true\" width=\"100%\" style=\"object-fit: cover;\" muted=\"true\" loop=\"true\" preload=\"auto\" controls=\"1\"><source src=\"https:\/\/www.surface-controls.com\/wp-content\/uploads\/1750\/48\/uvex-ueberpfuefung-brillenglaeser.mp4\" type=\"video\/mp4\">Sorry, your browser doesn&#039;t support embedded videos.<\/video><\/div><\/div><div class=\"fusion-text fusion-text-2\" style=\"--awb-margin-top:5%;\"><h4>Initial situation<\/h4>\n<p>OLIGO surface controls was commissioned to develop an automated testing system for ophthalmic lenses. In advance, Uvex provided us with several defect samples and good parts; the defect classes were defined based on a defect catalog.<\/p>\n<h4>Approach \/ Challenge<\/h4>\n<p>After careful testing in several different hardware setups, we chose a partner for the hardware and GUI to complete the system. The system includes a 5MP high-end camera, a specially modified grazing light, and a controller (industrial PC).<\/p>\n<h4>Solution &#8211; Test process procedure<\/h4>\n<p>The robot brings the glasses\/lenses to be tested to the light; due to the curvature, each lens must be tested separately. Within a few milliseconds, several stripe patterns appear. The distance between the camera, which is mounted on the ball head, and the test object is approximately 270 mm, while the distance from the test object to the strip light or the transmitted light unit is approximately 50 mm. The duration of the test process is 10-30 milliseconds, depending on the number of defect classes.<\/p>\n<p>The touchscreen control monitor displays all the important information, including photos of both lenses. Defects are marked with a red or green \u201cX\u201d depending on the defect class; a red \u201cX\u201d indicates a defect. The user interface can be customized.<\/p>\n<p>If no defect is detected, or if the defects are within the tolerance range, the robot places the glasses on the conveyor belt.<br \/>If a defect is detected, the robot places the glasses in a designated container. Several containers can be set up to separate the glasses according to defect classes. This makes it possible to subsequently recheck the missing parts manually and adjust the fault threshold, thus minimizing waste.<\/p>\n<h4>Result<\/h4>\n<p>The system offers the customer the following advantages:<\/p>\n<ol>\n<li>Minimizes the defect rate. The system operates at a consistently high level without fluctuations 24\/7.<\/li>\n<li>The system detects an accumulation of certain defects and issues a warning message. This allows the causes of defects to be quickly identified and eliminated.<\/li>\n<li>Defect classes and numbers are evaluated; it is possible to locate causes of defects, such as contamination or defective coatings, at any time and eliminate the causes and log the statistics on the frequency, e.g., per shift, of the defect classes that occur.<\/li>\n<li>Regardless of the system load, controls are conducted at 100%.<\/li>\n<li>This significantly reduces working hours while minimizing defect rates, thus improving profitability. The ROI can be calculated in advance.<\/li>\n<\/ol>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":6731,"menu_order":5,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6743","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Automated testing system for ophthalmic lenses at UVEX<\/title>\n<meta name=\"description\" content=\"The automated test system for the production of safety eyewear was installed at UVEX in F\u00fcrth and customised to the needs of QM.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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