{"id":3043,"date":"2026-03-20T06:06:26","date_gmt":"2026-03-20T06:06:26","guid":{"rendered":"https:\/\/www.sapphiretube.com\/?post_type=product&#038;p=3043"},"modified":"2026-03-20T06:06:26","modified_gmt":"2026-03-20T06:06:26","slug":"sapphire-optical-windows-high-performance-optical-components","status":"publish","type":"product","link":"https:\/\/www.sapphiretube.com\/ja\/product\/sapphire-optical-windows-high-performance-optical-components\/","title":{"rendered":"Sapphire Optical Windows High-Performance Optical Components"},"content":{"rendered":"<h1 data-end=\"115\" data-start=\"67\"><strong>Overview of Sapphire Optical Window\u00a0<\/strong><\/h1>\n<p data-end=\"295\" data-start=\"117\">Sapphire optical windows are high-performance components made from single-crystal aluminum oxide (Al\u2082O\u2083).<br data-end=\"225\" data-start=\"222\" \/>Due to their unique crystalline structure, sapphire windows exhibit:<\/p>\n<ul data-end=\"435\" data-start=\"296\">\n<li data-end=\"320\" data-start=\"296\">\n<p data-end=\"320\" data-start=\"298\">Outstanding hardness<\/p>\n<\/li>\n<li data-end=\"355\" data-start=\"321\">\n<p data-end=\"355\" data-start=\"323\">Excellent optical transmission<\/p>\n<\/li>\n<li data-end=\"399\" data-start=\"356\">\n<p data-end=\"399\" data-start=\"358\">Superior thermal and chemical stability<\/p>\n<\/li>\n<li data-end=\"435\" data-start=\"400\">\n<p data-end=\"435\" data-start=\"402\">Exceptional mechanical strength<\/p>\n<\/li>\n<\/ul>\n<p data-end=\"586\" data-start=\"437\">They are widely used in aerospace, defense, optics, medical instruments, and industrial applications where durability and reliability are critical.<\/p>\n<p data-end=\"586\" data-start=\"437\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium wp-image-3045\" src=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-300x300.jpg 300w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-1024x1024.jpg 1024w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-150x150.jpg 150w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-768x768.jpg 768w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-1536x1536.jpg 1536w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-2048x2048.jpg 2048w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-600x600.jpg 600w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0714_\u526f\u672c-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><img decoding=\"async\" class=\"alignnone size-medium wp-image-3046\" src=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-300x300.jpg 300w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-1024x1024.jpg 1024w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-150x150.jpg 150w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-768x768.jpg 768w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-1536x1536.jpg 1536w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-2048x2048.jpg 2048w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-600x600.jpg 600w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0716_\u526f\u672c-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<hr data-end=\"790\" data-start=\"787\" \/>\n<h1 data-end=\"834\" data-start=\"792\"><strong>Typical Specifications (Customizable)\u00a0of Sapphire Optical Window<\/strong><\/h1>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Specification<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Diameter<\/td>\n<td>5 mm \u2013 300 mm<\/td>\n<\/tr>\n<tr>\n<td>Thickness<\/td>\n<td>0.1 mm \u2013 20 mm<\/td>\n<\/tr>\n<tr>\n<td>Surface Accuracy<\/td>\n<td>\u03bb\/10, \u03bb\/4, \u03bb\/2 options<\/td>\n<\/tr>\n<tr>\n<td>Parallelism<\/td>\n<td>\uff1c1 arcmin<\/td>\n<\/tr>\n<tr>\n<td>Surface Quality<\/td>\n<td>10\/5, 20\/10, 40\/20 (MIL-PRF-13830B)<\/td>\n<\/tr>\n<tr>\n<td>Transmission<\/td>\n<td>\uff1e85% in visible spectrum (uncoated)<\/td>\n<\/tr>\n<tr>\n<td>Coating Options<\/td>\n<td>AR, HR, dual-band, or custom coatings<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr data-end=\"1139\" data-start=\"1136\" \/>\n<h1 data-end=\"1176\" data-start=\"1141\"><strong>Manufacturing Process Overview\u00a0of Sapphire Optical Window<\/strong><\/h1>\n<ol data-end=\"2340\" data-start=\"1177\">\n<li data-end=\"1384\" data-start=\"1177\">\n<p data-end=\"1200\" data-start=\"1180\"><strong data-end=\"1198\" data-start=\"1180\"><img decoding=\"async\" class=\"size-medium wp-image-3044 alignright\" src=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-300x300.jpg 300w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-1024x1024.jpg 1024w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-150x150.jpg 150w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-768x768.jpg 768w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-1536x1536.jpg 1536w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-2048x2048.jpg 2048w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-600x600.jpg 600w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0712_\u526f\u672c-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Crystal Growth<\/strong><\/p>\n<ul data-end=\"1384\" data-start=\"1204\">\n<li data-end=\"1307\" data-start=\"1204\">\n<p data-end=\"1307\" data-start=\"1206\">High-purity alumina is melted and grown into sapphire crystals (Czochralski or Kyropoulos methods).<\/p>\n<\/li>\n<li data-end=\"1384\" data-start=\"1311\">\n<p data-end=\"1384\" data-start=\"1313\">Precise control ensures defect-free, optically clear single crystals.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-end=\"1555\" data-start=\"1386\">\n<p data-end=\"1402\" data-start=\"1389\"><strong data-end=\"1400\" data-start=\"1389\">Cutting<\/strong><\/p>\n<ul data-end=\"1555\" data-start=\"1406\">\n<li data-end=\"1490\" data-start=\"1406\">\n<p data-end=\"1490\" data-start=\"1408\">Sapphire boules are sliced into blanks using diamond wire saws or laser cutting.<\/p>\n<\/li>\n<li data-end=\"1555\" data-start=\"1494\">\n<p data-end=\"1555\" data-start=\"1496\">Orientation is controlled to optimize optical properties.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-end=\"1713\" data-start=\"1557\">\n<p data-end=\"1574\" data-start=\"1560\"><strong data-end=\"1572\" data-start=\"1560\">Grinding<\/strong><\/p>\n<ul data-end=\"1713\" data-start=\"1578\">\n<li data-end=\"1656\" data-start=\"1578\">\n<p data-end=\"1656\" data-start=\"1580\">Mechanical grinding reduces thickness and ensures flat, parallel surfaces.<\/p>\n<\/li>\n<li data-end=\"1713\" data-start=\"1660\">\n<p data-end=\"1713\" data-start=\"1662\">Diamond abrasives are used for precision shaping.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-end=\"1878\" data-start=\"1715\">\n<p data-end=\"1733\" data-start=\"1718\"><strong data-end=\"1731\" data-start=\"1718\">Polishing<\/strong><\/p>\n<ul data-end=\"1878\" data-start=\"1737\">\n<li data-end=\"1820\" data-start=\"1737\">\n<p data-end=\"1820\" data-start=\"1739\">High-precision polishing achieves optical-grade surface roughness (RMS &lt; 1 nm).<\/p>\n<\/li>\n<li data-end=\"1878\" data-start=\"1824\">\n<p data-end=\"1878\" data-start=\"1826\">Determines final transmission and imaging quality.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-end=\"2073\" data-start=\"1880\">\n<p data-end=\"1907\" data-start=\"1883\"><strong data-end=\"1905\" data-start=\"1883\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-3048 alignright\" src=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-300x300.jpg 300w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-1024x1024.jpg 1024w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-150x150.jpg 150w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-768x768.jpg 768w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-1536x1536.jpg 1536w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-2048x2048.jpg 2048w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-600x600.jpg 600w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0720_\u526f\u672c-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Quality Inspection<\/strong><\/p>\n<ul data-end=\"2073\" data-start=\"1911\">\n<li data-end=\"2021\" data-start=\"1911\">\n<p data-end=\"2021\" data-start=\"1913\">Interferometers, microscopes, and transmission testers measure flatness, parallelism, and optical clarity.<\/p>\n<\/li>\n<li data-end=\"2073\" data-start=\"2025\">\n<p data-end=\"2073\" data-start=\"2027\">Only qualified windows proceed to finishing.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-end=\"2179\" data-start=\"2075\">\n<p data-end=\"2102\" data-start=\"2078\"><strong data-end=\"2100\" data-start=\"2078\">Coating (Optional)<\/strong><\/p>\n<ul data-end=\"2179\" data-start=\"2106\">\n<li data-end=\"2179\" data-start=\"2106\">\n<p data-end=\"2179\" data-start=\"2108\">AR, HR, or multi-layer coatings are applied for improved performance.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-end=\"2340\" data-start=\"2181\">\n<p data-end=\"2210\" data-start=\"2184\"><strong data-end=\"2208\" data-start=\"2184\">Cleaning &amp; Packaging<\/strong><\/p>\n<ul data-end=\"2340\" data-start=\"2214\">\n<li data-end=\"2273\" data-start=\"2214\">\n<p data-end=\"2273\" data-start=\"2216\">Ultrasonic cleaning removes particles and contaminants.<\/p>\n<\/li>\n<li data-end=\"2340\" data-start=\"2277\">\n<p data-end=\"2340\" data-start=\"2279\">Packaged in clean, protective environments to avoid damage.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr data-end=\"2345\" data-start=\"2342\" \/>\n<h1 data-end=\"2364\" data-start=\"2347\"><strong>Applications\u00a0of Sapphire Optical Window<\/strong><\/h1>\n<ul data-end=\"2768\" data-start=\"2365\">\n<li data-end=\"2444\" data-start=\"2365\">\n<h1 data-end=\"2364\" data-start=\"2347\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-3050 alignright\" src=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-300x300.jpg 300w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-1024x1024.jpg 1024w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-150x150.jpg 150w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-768x768.jpg 768w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-1536x1536.jpg 1536w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-2048x2048.jpg 2048w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-600x600.jpg 600w, https:\/\/www.sapphiretube.com\/wp-content\/uploads\/2026\/03\/IMG_0727_\u526f\u672c-1-100x100.jpg 100w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/h1>\n<p data-end=\"2444\" data-start=\"2367\"><strong data-end=\"2384\" data-start=\"2367\">Laser Systems<\/strong>: High-power laser windows for protection and transmission<\/p>\n<\/li>\n<li data-end=\"2444\" data-start=\"2365\"><\/li>\n<li data-end=\"2523\" data-start=\"2445\">\n<p data-end=\"2523\" data-start=\"2447\"><strong data-end=\"2470\" data-start=\"2447\">Aerospace &amp; Defense<\/strong>: Missile domes, aircraft sensors, satellite optics<\/p>\n<\/li>\n<li data-end=\"2523\" data-start=\"2445\"><\/li>\n<li data-end=\"2598\" data-start=\"2524\">\n<p data-end=\"2598\" data-start=\"2526\"><strong data-end=\"2547\" data-start=\"2526\">UV\/IR Instruments<\/strong>: UV spectrometers, IR detectors, imaging systems<\/p>\n<\/li>\n<li data-end=\"2598\" data-start=\"2524\"><\/li>\n<li data-end=\"2683\" data-start=\"2599\">\n<p data-end=\"2683\" data-start=\"2601\"><strong data-end=\"2620\" data-start=\"2601\">Medical Devices<\/strong>: Laser surgery equipment, endoscopes, diagnostic instruments<\/p>\n<\/li>\n<li data-end=\"2683\" data-start=\"2599\"><\/li>\n<li data-end=\"2768\" data-start=\"2684\">\n<p data-end=\"2768\" data-start=\"2686\"><strong data-end=\"2711\" data-start=\"2686\">Industrial Monitoring<\/strong>: Furnace windows, pressure sensors, plasma diagnostics<\/p>\n<\/li>\n<\/ul>\n<hr data-end=\"2773\" data-start=\"2770\" \/>\n<h1 data-end=\"2790\" data-start=\"2775\"><strong>Advantages\u00a0of Sapphire Optical Window<\/strong><\/h1>\n<ul data-end=\"3086\" data-start=\"2791\">\n<li data-end=\"2840\" data-start=\"2791\">\n<p data-end=\"2840\" data-start=\"2793\">Long service life, reducing maintenance costs<\/p>\n<\/li>\n<li data-end=\"2949\" data-start=\"2841\">\n<p data-end=\"2949\" data-start=\"2843\">Excellent performance under extreme environments (high temperature, high pressure, corrosive conditions)<\/p>\n<\/li>\n<li data-end=\"3002\" data-start=\"2950\">\n<p data-end=\"3002\" data-start=\"2952\">High optical transmission across a wide spectrum<\/p>\n<\/li>\n<li data-end=\"3086\" data-start=\"3003\">\n<p data-end=\"3086\" data-start=\"3005\">Fully customizable for diverse scientific, industrial, and defense applications<\/p>\n<\/li>\n<\/ul>\n<hr data-end=\"3091\" data-start=\"3088\" \/>\n<h1 data-end=\"3130\" data-start=\"3093\"><strong>FAQ (Frequently Asked Questions)\u00a0of Sapphire Optical Window<\/strong><\/h1>\n<p data-end=\"3442\" data-start=\"3132\"><strong data-end=\"3216\" data-start=\"3132\">Q1: What is the difference between sapphire windows and quartz or glass windows?<\/strong><br data-end=\"3219\" data-start=\"3216\" \/>A1: Sapphire windows are much harder (Mohs 9 vs. Mohs 5\u20137), more durable, and can withstand extreme environments. Quartz or glass windows are less expensive but not suitable for high-stress or high-temperature conditions.<\/p>\n<p data-end=\"3668\" data-start=\"3444\"><strong data-end=\"3504\" data-start=\"3444\">Q2: Can sapphire windows be used with high-power lasers?<\/strong><br data-end=\"3507\" data-start=\"3504\" \/>A2: Yes. Sapphire windows have low absorption, high damage thresholds, and excellent thermal conductivity, making them ideal for high-power laser applications.<\/p>\n<p data-end=\"3842\" data-start=\"3670\"><strong data-end=\"3737\" data-start=\"3670\">Q3: Are sapphire windows transparent in both UV and IR regions?<\/strong><br data-end=\"3740\" data-start=\"3737\" \/>A3: Yes. Sapphire transmits from 200 nm (deep UV) up to 5000 nm (mid-IR), covering a broad spectrum.<\/p>\n<p data-end=\"4031\" data-start=\"3844\"><strong data-end=\"3880\" data-start=\"3844\">Q4: What coatings are available?<\/strong><br data-end=\"3883\" data-start=\"3880\" \/>A4: Anti-reflection (AR), high-reflection (HR), partial transmission, or multi-band coatings can be applied according to application requirements.<\/p>\n<div><\/div>\n<div><\/div>","protected":false},"excerpt":{"rendered":"<p>A sapphire optical window is the ideal window material for many UV and IR applications because it can transmit so far into the UV Diameter 300mm Sapphire Optical Windows Clear Color 1mm &#8211; 100mm Thickness 0 nd IR bands.<\/p>","protected":false},"featured_media":3050,"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 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