{"id":2054,"date":"2026-01-21T05:37:49","date_gmt":"2026-01-21T05:37:49","guid":{"rendered":"https:\/\/www.sapphire-windows.com\/?post_type=product&#038;p=2054"},"modified":"2026-01-21T05:37:50","modified_gmt":"2026-01-21T05:37:50","slug":"custom-sapphire-optical-window-single-crystal-al2o3-99-999-cut-for-ir-applications","status":"publish","type":"product","link":"https:\/\/www.sapphire-windows.com\/cs\/product\/custom-sapphire-optical-window-single-crystal-al2o3-99-999-cut-for-ir-applications\/","title":{"rendered":"Zak\u00e1zkov\u00e9 saf\u00edrov\u00e9 optick\u00e9 okno Single Crystal Al2O3 99,999% Cut pro IR aplikace"},"content":{"rendered":"<h3 data-start=\"338\" data-end=\"364\">P\u0159ehled produkt\u016f<img fetchpriority=\"high\" decoding=\"async\" class=\"alignright wp-image-2056 size-medium\" src=\"https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-300x300.jpg\" alt=\"Zak\u00e1zkov\u00e9 saf\u00edrov\u00e9 optick\u00e9 okno Single Crystal Al2O3 99,999% Cut pro IR aplikace\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-300x300.jpg 300w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-150x150.jpg 150w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-768x768.jpg 768w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-600x600.jpg 600w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-100x100.jpg 100w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323302-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/h3>\n<p data-start=\"365\" data-end=\"922\">The Transparent Sapphire Optical Window Substrate is a high-performance optical component made from single crystal sapphire (\u03b1-Al\u2082O\u2083). With 99.999% purity, it offers exceptional transmittance in the ultraviolet (UV), visible (VIS), and infrared (IR) spectrum, making it ideal for a variety of high-end applications. Sapphire, with its extremely high hardness (Mohs 9), wear resistance, and chemical stability, is the material of choice for environments requiring precision optical systems that withstand harsh conditions.<\/p>\n<p data-start=\"924\" data-end=\"1369\">Manufactured through advanced crystal growth techniques (Kyropoulos method or Czochralski method), these sapphire substrates are precisely cut and polished, ensuring high optical clarity and flatness for critical applications. The high thermal conductivity and radiation resistance make this substrate an indispensable component in industries such as semiconductors, aerospace, defense, and medical equipment.<\/p>\n<p data-start=\"924\" data-end=\"1369\">\n<h3 data-start=\"1376\" data-end=\"1396\"><img decoding=\"async\" class=\"size-medium wp-image-2057 alignleft\" src=\"https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo-300x300.jpg 300w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo-150x150.jpg 150w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo-768x768.jpg 768w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo-600x600.jpg 600w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo-100x100.jpg 100w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/pl203323305-transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_windo.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Kl\u00ed\u010dov\u00e9 vlastnosti<\/h3>\n<ol data-start=\"1398\" data-end=\"2774\">\n<li data-start=\"1398\" data-end=\"1637\">\n<p data-start=\"1401\" data-end=\"1637\">High Hardness and Wear Resistance<br data-start=\"1438\" data-end=\"1441\" \/>Sapphire boasts a Mohs hardness of 9, second only to diamond. This gives it exceptional resistance to scratches and wear, making it suitable for long-term use in demanding environments.<\/p>\n<\/li>\n<li data-start=\"1639\" data-end=\"1865\">\n<p data-start=\"1642\" data-end=\"1865\">Superior Optical Performance<br data-start=\"1674\" data-end=\"1677\" \/>The sapphire window offers high transmittance (85% in the UV-IR range) and excellent light clarity, ideal for optical instruments, laser systems, and sensor windows.<\/p>\n<\/li>\n<li data-start=\"1867\" data-end=\"2105\">\n<p data-start=\"1870\" data-end=\"2105\">Tepeln\u00e1 stabilita<br data-start=\"1891\" data-end=\"1894\" \/>With a melting point of 2050\u00b0C, sapphire windows can withstand extreme temperatures, providing reliable performance in high-temperature applications such as industrial monitoring and laser optics.<\/p>\n<\/li>\n<li data-start=\"2107\" data-end=\"2335\">\n<p data-start=\"2110\" data-end=\"2335\">Chemical and Environmental Resistance<br data-start=\"2151\" data-end=\"2154\" \/>Sapphire is highly resistant to acids, alkalis, and solvents, making it ideal for use in corrosive environments, such as chemical reactors and aerospace applications.<\/p>\n<\/li>\n<li data-start=\"2337\" data-end=\"2526\">\n<p data-start=\"2340\" data-end=\"2526\">High Mechanical Strength<br data-start=\"2368\" data-end=\"2371\" \/>The compressive strength of sapphire is up to 2 GPa, making it resilient to mechanical stress and impact, ensuring long-term durability.<\/p>\n<\/li>\n<li data-start=\"2528\" data-end=\"2774\">\n<p data-start=\"2531\" data-end=\"2774\">Mo\u017enosti p\u0159izp\u016fsoben\u00ed<br data-start=\"2556\" data-end=\"2559\" \/>Available in a variety of shapes and sizes, this sapphire window can be tailored to fit specific applications, including custom IR windows, optical windows, and substrates for electronic ceramics.<\/p>\n<\/li>\n<\/ol>\n<h3 data-start=\"2781\" data-end=\"2813\">Technick\u00e9 specifikace<\/h3>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2815\" data-end=\"3333\">\n<thead data-start=\"2815\" data-end=\"2852\">\n<tr data-start=\"2815\" data-end=\"2852\">\n<th data-start=\"2815\" data-end=\"2831\" data-col-size=\"sm\">Parametr<\/th>\n<th data-start=\"2831\" data-end=\"2852\" data-col-size=\"sm\">Specifikace<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2863\" data-end=\"3333\">\n<tr data-start=\"2863\" data-end=\"2902\">\n<td data-start=\"2863\" data-end=\"2878\" data-col-size=\"sm\">Materi\u00e1l<\/td>\n<td data-col-size=\"sm\" data-start=\"2878\" data-end=\"2902\">Single Crystal Al\u2082O\u2083<\/td>\n<\/tr>\n<tr data-start=\"2903\" data-end=\"2927\">\n<td data-start=\"2903\" data-end=\"2916\" data-col-size=\"sm\">Purity<\/td>\n<td data-col-size=\"sm\" data-start=\"2916\" data-end=\"2927\">99.999%<\/td>\n<\/tr>\n<tr data-start=\"2928\" data-end=\"2955\">\n<td data-start=\"2928\" data-end=\"2950\" data-col-size=\"sm\">Hardness (Mohs)<\/td>\n<td data-col-size=\"sm\" data-start=\"2950\" data-end=\"2955\">9<\/td>\n<\/tr>\n<tr data-start=\"2956\" data-end=\"3008\">\n<td data-start=\"2956\" data-end=\"2983\" data-col-size=\"sm\">Optical Transmission<\/td>\n<td data-col-size=\"sm\" data-start=\"2983\" data-end=\"3008\">85% (UV, Visible, IR)<\/td>\n<\/tr>\n<tr data-start=\"3009\" data-end=\"3049\">\n<td data-start=\"3009\" data-end=\"3032\" data-col-size=\"sm\">Rozsah vlnov\u00fdch d\u00e9lek<\/td>\n<td data-col-size=\"sm\" data-start=\"3032\" data-end=\"3049\">0.17 &#8211; 5.5 \u00b5m<\/td>\n<\/tr>\n<tr data-start=\"3050\" data-end=\"3092\">\n<td data-start=\"3050\" data-end=\"3077\" data-col-size=\"sm\">Tepeln\u00e1 vodivost<\/td>\n<td data-col-size=\"sm\" data-start=\"3077\" data-end=\"3092\">25.12 W\/m\u00b7K<\/td>\n<\/tr>\n<tr data-start=\"3093\" data-end=\"3121\">\n<td data-start=\"3093\" data-end=\"3107\" data-col-size=\"sm\">Hustota<\/td>\n<td data-col-size=\"sm\" data-start=\"3107\" data-end=\"3121\">3,98 g\/cm\u00b3<\/td>\n<\/tr>\n<tr data-start=\"3122\" data-end=\"3152\">\n<td data-start=\"3122\" data-end=\"3142\" data-col-size=\"sm\">Bod t\u00e1n\u00ed<\/td>\n<td data-start=\"3142\" data-end=\"3152\" data-col-size=\"sm\">2050\u00b0C<\/td>\n<\/tr>\n<tr data-start=\"3153\" data-end=\"3189\">\n<td data-start=\"3153\" data-end=\"3180\" data-col-size=\"sm\">Pevnost v tlaku<\/td>\n<td data-start=\"3180\" data-end=\"3189\" data-col-size=\"sm\">2 GPa<\/td>\n<\/tr>\n<tr data-start=\"3190\" data-end=\"3250\">\n<td data-start=\"3190\" data-end=\"3229\" data-col-size=\"sm\">Coefficient of Thermal Expansion<\/td>\n<td data-col-size=\"sm\" data-start=\"3229\" data-end=\"3250\">\u03b1 = 5.8 \u00d7 10\u207b\u2076 \/K<\/td>\n<\/tr>\n<tr data-start=\"3251\" data-end=\"3288\">\n<td data-start=\"3251\" data-end=\"3274\" data-col-size=\"sm\">Index lomu<\/td>\n<td data-start=\"3274\" data-end=\"3288\" data-col-size=\"sm\">n\u2080 = 1.768<\/td>\n<\/tr>\n<tr data-start=\"3289\" data-end=\"3333\">\n<td data-start=\"3289\" data-end=\"3310\" data-col-size=\"sm\">Povrchov\u00e1 \u00faprava<\/td>\n<td data-col-size=\"sm\" data-start=\"3310\" data-end=\"3333\">Polished, Ra &lt; 5 nm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h3 data-start=\"3340\" data-end=\"3360\">Aplikace<\/h3>\n<ol data-start=\"3362\" data-end=\"4624\">\n<li data-start=\"3362\" data-end=\"3530\">\n<p data-start=\"3365\" data-end=\"3530\">Semiconductor Industry<br data-start=\"3391\" data-end=\"3394\" \/>Used in semiconductor wafers, LED chip manufacturing, and photolithography systems for high-precision optical components.<\/p>\n<\/li>\n<li data-start=\"3532\" data-end=\"3793\">\n<p data-start=\"3535\" data-end=\"3793\">Optical and Laser Systems<img decoding=\"async\" class=\"size-medium wp-image-2058 alignright\" src=\"https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-300x300.jpg 300w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-150x150.jpg 150w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-768x768.jpg 768w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-600x600.jpg 600w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window-100x100.jpg 100w, https:\/\/www.sapphire-windows.com\/wp-content\/uploads\/2026\/01\/transparent_sapphire_optical_window_substrate_single_crystal_al2o3_99_999_cut_custom_ir_window.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><br data-start=\"3564\" data-end=\"3567\" \/>Sapphire windows are widely used as protective covers for optical instruments and laser systems, effectively protecting against dust, moisture, and mechanical damage while maintaining high optical transmittance.<\/p>\n<\/li>\n<li data-start=\"3795\" data-end=\"4104\">\n<p data-start=\"3798\" data-end=\"4104\">Letectv\u00ed a obrana<br data-start=\"3823\" data-end=\"3826\" \/>Sapphire windows are integral in aerospace equipment, including sensor windows for satellites, missile fairings, and airborne optical systems. Their resistance to extreme temperatures and radiation makes them ideal for high-performance aerospace applications.<\/p>\n<\/li>\n<li data-start=\"4106\" data-end=\"4295\">\n<p data-start=\"4109\" data-end=\"4295\">Medical and Biotech Equipment<br data-start=\"4142\" data-end=\"4145\" \/>Used in endoscopes, laser surgical instruments, and optical inspection systems for superior transmittance and biocompatibility.<\/p>\n<\/li>\n<li data-start=\"4297\" data-end=\"4476\">\n<p data-start=\"4300\" data-end=\"4476\">Industrial Applications<br data-start=\"4327\" data-end=\"4330\" \/>Used in high-temperature observation windows, laser cutting heads, and sensor protection for machinery exposed to harsh conditions.<\/p>\n<\/li>\n<li data-start=\"4478\" data-end=\"4624\">\n<p data-start=\"4481\" data-end=\"4624\">Consumer Electronics<br data-start=\"4505\" data-end=\"4508\" \/>Used in smartphones, watches, and camera lenses to provide scratch resistance and durability.<\/p>\n<\/li>\n<\/ol>\n<h3 data-start=\"4631\" data-end=\"4642\">\u010cASTO KLADEN\u00c9 DOTAZY<\/h3>\n<p data-start=\"4644\" data-end=\"4917\">Q1: Why is sapphire used for optical windows?<br data-start=\"4693\" data-end=\"4696\" \/>A1: Sapphire offers high hardness, excellent optical transmittance, and outstanding durability, making it ideal for protecting sensitive optical systems while maintaining clarity and performance over time.<\/p>\n<p data-start=\"4919\" data-end=\"5193\">Q2: What are the advantages of using sapphire windows over glass?<br data-start=\"4988\" data-end=\"4991\" \/>A2: Sapphire windows are 10\u00d7 more scratch-resistant than glass, can withstand higher temperatures (up to 2050\u00b0C), and provide superior optical clarity across a broad spectrum (UV to IR).<\/p>\n<p data-start=\"5195\" data-end=\"5452\">Q3: Can sapphire windows be customized?<br data-start=\"5238\" data-end=\"5241\" \/>A3: Yes, sapphire optical windows are available in various sizes, shapes, and thicknesses to meet specific industry needs, including custom IR windows, substrates, and optical lenses.<\/p>","protected":false},"excerpt":{"rendered":"<p data-start=\"5491\" data-end=\"5806\">High-performance Transparent Sapphire Optical Window Substrate made from 99.999% pure single crystal Al\u2082O\u2083. Provides 85% transmittance, superior hardness (Mohs 9), and excellent thermal &amp; chemical resistance. Ideal for semiconductors, laser systems, and high-end optical instruments.<\/p>","protected":false},"featured_media":2055,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[15],"product_tag":[118,117,89,113,116,119,115,114],"class_list":{"0":"post-2054","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sapphire-windows","7":"product_tag-high-transmittance-sapphire","8":"product_tag-ir-window","9":"product_tag-optical-glass","10":"product_tag-sapphire-optical-window","11":"product_tag-sapphire-substrate","12":"product_tag-semiconductor-optical-window","13":"product_tag-single-crystal-al2o3","14":"product_tag-transparent-sapphire","15":"desktop-align-left","16":"tablet-align-left","17":"mobile-align-left","18":"ast-product-gallery-layout-horizontal-slider","19":"ast-product-tabs-layout-horizontal","21":"first","22":"instock","23":"shipping-taxable","24":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/product\/2054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/comments?post=2054"}],"version-history":[{"count":0,"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/product\/2054\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/media\/2055"}],"wp:attachment":[{"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/media?parent=2054"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/product_brand?post=2054"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/product_cat?post=2054"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.sapphire-windows.com\/cs\/wp-json\/wp\/v2\/product_tag?post=2054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}