Calomel IR polarizers are the only crystalline prismatic polarizers applicable in the mid-IR and LWIR spectral regions on the market. Beside the Calomel prismatic polarizers, only wire grid systems are currently available with no other birefringent crystal transparent above 6µm. The combination of Calomel´s two unique material properties: a high value of birefringence (Δn=0.683) and a wide transparency range (0.4μm-17μm), makes it a great material for mid-infrared polarizers, beam splitting and phase delay components. Another significant advantage of Calomel crystal is that the material is optically positive, so GF polarizer transmits the ordinary (o) beam, whereas the extraordinary (e) one is reflected to the side and may be used for the application if required. This is an exceptional feature of mercurous chloride material.
United Kingdom
Knight Optical can offer Ground Glass Diffusers for use within Photography. We supply a range of Ground Glass Diffusers for a range of applications. All individually QA checked and metrology tested for quality to ensure parts meet customer specification. Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications. Knight Optical supply precision optical components to customers within photography. Ground Glass Diffusers are used in to diffuse the flash from cameras to prevent photos with harsh light and hard shadows to soften and improve the appeal of the image. Diffusers are also used in lightning systems to prevent glare from computer screens, the manufacture of lightboxes for advertising, viewing x-rays, and other applications. For more information read PDF…
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Befort Wetzlar is mentioned and recommended in the relevant Internet forums as a coater of telescope mirrors. We serve customers in astronomy, natural sciences and technology, supporting users with our technical knowhow. After all, you can't enjoy the best possible view of the universe without maximum reflectivity and robust mirrors.
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We offer optical brightners In guaranteed quality, at stable prices and packed appropriately for transportation. Do you need advice on choosing your product or are you looking for a suitable substitution? Our application and product experts are happy to help! Our experience and deep knowledge in the area of specialty chemicals and ingredients ensures that we are well positioned to effectively support both our customers and our suppliers with product and application expertise. Please contact us for more information!
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Differentiation between ANSI and DIN / EN ANSI eyeglass blinds differ from DIN / EN eyeglass blinds in terms of pressure levels, sealing strips and materials. In German-speaking countries, glasses blind disks are also called blind disks or throttle disks. However, the English terms “spectacle blind”, “blind paddle” are also often used in Germany. Pressure ratings according to ANSI in lbs The following pressure levels for blind disks according to ANSI are available 150, 300, 600, 900 and 1500 lbs. Sealing strips The following forms of sealing strips are available: SMF, FF, RF and RTJ. Materials The steel materials A 516 GR 60 and A 516 GR 70 are available. In the stainless steel sector, the materials TP 304 / L, TP 316 / L and TP 312 are possible.
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