45-908 50mm Dia. x 200mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 200 mm
- BFL
- 198.33 mm
- R1
- 205.86 mm
- R2
- -205.86 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
45-908 50mm Dia. x 200mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
The 45-908 is a high-quality double-convex lens, boasting a 50mm diameter and a focal length of 200mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website. The product page indicates that the lens is currently in stock, ensuring prompt delivery for interested buyers.
The lens is constructed from N-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. This makes the lens suitable for a wide range of applications, particularly in the visible to near-infrared spectrum (VIS-NIR), spanning from 400 to 1000nm.
The lens features a front and back coating of edm visnir0sp2002000, a proprietary coating developed by Edmund Optics. This coating enhances the lens's performance in the VIS-NIR spectrum, reducing surface reflections and improving transmission.
The geometric specifications of the lens are as follows: the edge thickness is 2mm, while the center thickness is 5.05mm. The first radius of curvature (R1) is 205.86mm, and the second radius (R2) is -205.86mm, indicating the double-convex shape. The back focal length (BFL) is 198.33mm, and both the inner and outer radii are 0mm.
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