{"product_id":"qhyccd-swir-lens-for-qhy990","title":"QHYCCD SWIR Lens for QHY990\/991","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEngineered for Short-Wave Infrared (SWIR) wavelengths\u003c\/li\u003e\n\u003cli\u003eOptimized for QHY990 and QHY991 SWIR cameras\u003c\/li\u003e\n\u003cli\u003eHigh-transmission coatings for the SWIR band\u003c\/li\u003e\n\u003cli\u003eDesigned for scientific and industrial imaging applications\u003c\/li\u003e\n\u003cli\u003eProvides a complete, integrated imaging solution with QHY SWIR cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eSWIR Lens for QHY990\/991\u003c\/h2\u003e\n\u003cp\u003eThis SWIR Lens for QHY990\/991 is engineered to provide a high-transmission optical path specifically for the unique sensitivity range of Short-Wave Infrared sensors. It enables the full capabilities of cameras like the QHY990 and QHY991 by using specialized glass and coatings that are transparent to wavelengths where conventional optics fail, ensuring maximum signal reaches the sensor for scientific and industrial applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized Transmission for the SWIR Spectrum\u003c\/h3\u003e\n\u003cp\u003eStandard camera lenses are designed for visible light; their glass and anti-reflection coatings absorb or reflect a significant portion of the SWIR spectrum. This lens is constructed with materials and multi-layer coatings specifically formulated to maximize throughput in the infrared, perfectly matching the operational waveband of QHY's SWIR sensors and preventing signal loss.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDesigned for the QHY990 and QHY991\u003c\/h3\u003e\n\u003cp\u003eThis is not a general-purpose lens adapted for infrared use. It is purpose-built to integrate seamlessly with the QHY990 and QHY991 cameras, ensuring both mechanical compatibility and optical alignment. This system-level design approach guarantees that the lens delivers a clean, well-corrected image to the sensor, making it a reliable tool for demanding imaging tasks like agricultural analysis, silicon wafer inspection, or counterfeit detection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a special SWIR lens for the QHY990\/991 camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eStandard optical glass used in conventional lenses is often opaque to Short-Wave Infrared (SWIR) light. This dedicated SWIR lens uses specialized glass and coatings that are highly transmissive in the infrared spectrum, ensuring that the maximum amount of light reaches your \u003cstrong\u003eQHY990 or QHY991 sensor\u003c\/strong\u003e for accurate measurements and high-contrast images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat applications benefit from using this SWIR lens with a QHY990 camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens is ideal for a range of scientific and industrial applications where SWIR imaging provides unique data. Key uses include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgricultural Analysis:\u003c\/strong\u003e Assessing crop health and moisture content.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Inspection:\u003c\/strong\u003e Seeing through silicon wafers or detecting material defects invisible to the human eye.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecurity \u0026amp; Surveillance:\u003c\/strong\u003e Imaging through haze, smoke, or fog.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArt \u0026amp; Document Analysis:\u003c\/strong\u003e Revealing underdrawings or alterations in historical artifacts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SWIR Lens for QHY990\/991 also corrected for the visible spectrum?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis lens is optimized specifically for the SWIR band. While it may pass some visible light, its anti-reflection coatings and optical corrections are not designed for high-fidelity imaging in the visible spectrum. For best results, it should be used exclusively for its intended SWIR applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary advantage of using this lens with a QHY990 or QHY991?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe main advantage is system integration. This lens is designed to work as part of a complete solution with the \u003cstrong\u003eQHY990 and QHY991 cameras\u003c\/strong\u003e, ensuring correct mechanical fit, focus, and optical performance without the need for third-party adapters or guesswork. It unlocks the full potential of the camera's SWIR sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this lens work with SWIR cameras other than the QHY990\/991?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed and optimized for the QHY990 and QHY991, it may be compatible with other SWIR cameras that share the same mechanical interface and sensor format. However, performance is only guaranteed with the specified QHY models. Users should verify compatibility before purchasing for use with other equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use standard 1.25\" or 2\" astronomy filters with this SWIR lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCompatibility with standard astronomy filters is not specified. Most astronomy filters are designed to block infrared light (IR-cut) or pass specific visible-light narrow bands, making them unsuitable for SWIR imaging. For SWIR applications, you would typically use specialized long-pass or band-pass filters designed for infrared wavelengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"Default Title","offer_id":52942983627037,"sku":"QHY-070005","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/QHYCCD-SWIR-Lens-for-QHY990-991-1_fbcf5032-fd4b-4c8d-9ba7-eeb76fcb2786.jpg?v=1789614809","url":"https:\/\/davidastro.com\/en-us\/products\/qhyccd-swir-lens-for-qhy990","provider":"David Astro","version":"1.0","type":"link"}