{"product_id":"air-spaced-achromatic-doublets-ada418-b","title":"Air-Spaced Achromatic Doublet, AR Coating: 650-1050 nm ADA418-B","description":"\u003ch2\u003eAir-Spaced Achromatic Doublet, AR Coating: 650-1050 nm — Model ADA418-B\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eFocal length 200 mm.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAR Coating: 350-700 nm or 650-1050 nm\u003c\/li\u003e\n\u003cli\u003eSuperior Image Quality Compared to Singlets\u003c\/li\u003e\n\u003cli\u003eClear Aperture: Ø20 mm\u003c\/li\u003e\n\u003cli\u003e1\" Outer Diameter, Compatible with Ø1\" Lens Tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLBTEK Air-Spaced Achromatic Doublets deliver a spot size close to the diffraction limit, with optical designs that correct for most aberrations. Compared to cemented doublets, they offer a higher damage threshold. These doublets are designed for broad wavelength ranges. For different coating options, LBTEK uses three typical wavelengths in the lens design:  For 350–700 nm AR coating: 486.1 nm, 587.6 nm, and 656.3 nm；For 650–1050 nm AR coating: 706.5 nm, 855 nm, and 1015 nm.\n    All LBTEK lenses are precision-manufactured under strict quality control, ensuring high-quality optical products at competitive prices.\u003c\/p\u003e\n\u003ch3\u003eAir-Spaced Achromatic Doublet, AR Coating: 650-1050 nm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCoating: 650-1050 nm\u003c\/li\u003e\n\u003cli\u003eClear Aperture: Ø20 mm\u003c\/li\u003e\n\u003cli\u003eOuter Diameter 1 Inch, Compatible with Ø1 Inch Lens Tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAddress：Building A6, Huanchuang Enterprise Plaza, Yuelu Idstrict, Changsha\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47518239260826,"sku":"ADA418-B","price":753.25,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/2-1-Fm6ilhlN4vvFDdcCgB0ixY6mDRP4.jpg?v=1772678233","url":"https:\/\/waveqvanta.com\/products\/air-spaced-achromatic-doublets-ada418-b","provider":"WaveQuanta","version":"1.0","type":"link"}