SLB-20B-90P 20.0 mm Dia. x 90.5 mm FL; Double-Convex Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 90.5 mm
- BFL
- 89.5 mm
- R1
- 93.42 mm
- R2
- -93.42 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.518720636186463
- λ
- 546.1 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
SLB-20B-90P 20.0 mm Dia. x 90.5 mm FL; Double-Convex Lens Uncoated
The SLB-20B-90P is a high-quality double-convex lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed with a base shape of a circle, is constructed from the renowned material n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties.
The lens boasts a diameter of 20.0 mm and a center thickness of 3.1 mm, with the edge thickness being 2.0 mm. The effective focal length (EFL) is 90.5 mm, while the back focal length (BFL) is 89.5 mm. The radii of curvature for the first and second surfaces are 93.42 mm and -93.42 mm, respectively.
This lens is uncoated, which means it does not have any anti-reflective coatings. While this may result in a higher reflectivity at the air-glass interfaces, it also ensures a broader spectral range and lower cost compared to coated lenses.
The SLB-20B-90P is currently in stock and available for immediate purchase. For more detailed information or to explore similar products, please visit the provided weblink.
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