{"id":12999,"date":"2026-05-22T09:25:58","date_gmt":"2026-05-22T07:25:58","guid":{"rendered":"https:\/\/hef.group\/?p=12999"},"modified":"2026-05-22T09:25:58","modified_gmt":"2026-05-22T07:25:58","slug":"photonics-expertise-in-the-service-of-the-aerospace-industry","status":"publish","type":"post","link":"https:\/\/hef.group\/en\/photonics-expertise-in-the-service-of-the-aerospace-industry\/","title":{"rendered":"Photonics expertise in the service of the aerospace industry"},"content":{"rendered":"<section class=\"axblock-textandimg white-bg\">\n    <div class=\"ax-textandimg\">\n        <div class=\"container ax-textandimg-container content-right \">\n            <div class=\"ax-textandimg-content\" style=\"--numberColumns: 2\">\n                                    <h2 class=\"ax-title3\">Sapphire optical windows for avionics<\/h2>\n                                                    <div class=\"text-content\">\n                        <p style=\"text-align: left;\">In aerospace applications, optical components must meet far more than just purely optical requirements. They must withstand harsh environmental conditions, maintain <strong>stable optical performance<\/strong>, and incorporate additional functionality directly into the system. <\/p>\n<p>This project illustrates how the expertise of the <strong>HEF Groupe<\/strong> combine to develop <strong>advanced photonic solutions<\/strong> intended for critical avionics systems.<\/p>\n<p>The process begins at our HEF PHOTONICS facility in Lisses, France, where the optical-grade single-crystal sapphire substrate is manufactured. The component is then optimized by our subsidiary <strong>KERDRY in Lannion, France<\/strong>, using advanced optical and functional treatments tailored to the demanding requirements of the aerospace industry. <\/p>\n<p>The result is a <strong>high-performance sapphire-based optical window<\/strong> that combines optical transmission, environmental resistance, and integrated functionality within a single component.<\/p>\n<p>Instead of acting as a simple, passive transparent component, this optical window becomes a <strong>real asset to the system\u2019s overall performance<\/strong>.<\/p>\n<p>By combining expertise in materials, thin-film technologies, and functional integration capabilities, HEF supports its customers in developing solutions for the most demanding aerospace environments.<\/p>\n<p>This concrete example illustrates how the expertise within our photonics business complements one another to meet the demands of aerospace applications.<\/p>\n                    <\/div>\n                                            <\/div>\n\n\t        <div class=\"ax-textandimg-medias-container\">\n\t            \t                \t                    <div class=\"ax-textandimg-img contain\">\n\t                        <img decoding=\"async\" width=\"1402\" height=\"1122\" src=\"https:\/\/hef.group\/wp-content\/uploads\/2026\/05\/ChatGPT-Image-20.-Mai-2026-13_19_40-e1779374045741.jpg\" class=\"attachment-full size-full\" alt=\"Fen\u00eatre optique en saphir pour applications avioniques, tenue \u00e0 la main devant le nez d\u2019un avion dans un environnement a\u00e9ronautique.\" \/>\t                    <\/div>\n\t                                    \t            \n\t\t        \t        <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n<section class=\"axblock-textandimg blue-bg\">\n    <div class=\"ax-textandimg\">\n        <div class=\"container ax-textandimg-container content-left \">\n            <div class=\"ax-textandimg-content\" style=\"--numberColumns: 1\">\n                                    <h2 class=\"ax-title3\">Technical Highlights<\/h2>\n                                                    <div class=\"text-content\">\n                        <p>\u2022 <strong>Optical-grade monocrystalline sapphire (C-Axis or A-Axis)<\/strong><br \/>\n<strong>\u2022 Transmission &gt;90 % in the VIS\u2013SWIR range<\/strong><br \/>\n<strong>\u2022 Metallic grid integration<\/strong><br \/>\n<strong>\u2022 Optional conductive ITO layer<\/strong><br \/>\n<strong>\u2022 Anti-reflective coating (AR) and integrated bus bars<\/strong><br \/>\n<strong>\u2022 Experience with systems designed for aerospace environmental requirements (DO-160 heritage)<\/strong><\/p>\n                    <\/div>\n                                            <\/div>\n\n\t        <div class=\"ax-textandimg-medias-container\">\n\t            \t                \t                    <div class=\"ax-textandimg-img cover\">\n\t                        <img decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/hef.group\/wp-content\/uploads\/2026\/05\/ChatGPT-Image-21.-Mai-2026-16_49_36-e1779376140762.jpg\" class=\"attachment-full size-full\" alt=\"Avion au d\u00e9collage illustrant les applications a\u00e9ronautiques des solutions photoniques haute performance.\" \/>\t                    <\/div>\n\t                                    \t            \n\t\t        \t        <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":13,"featured_media":13002,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[26],"tags":[561],"class_list":["post-12999","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-group","tag-success-story-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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