SLB-20-90N 20.0 mm Dia. x -90.0 mm FL; Plano-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -90 mm
- BFL
- -91.3 mm
- R1
- -46.71 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-20-90N 20.0 mm Dia. x -90.0 mm FL; Plano-Concave Lens Uncoated
The SLB-20-90N is a Plano-Concave Lens with a 20.0 mm diameter and a focal length of -90.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence.
The lens features a concave shape with an inner radius of 0 mm and an outer radius of 0 mm. The center thickness of the lens is 2 mm, while the edge thickness is 3.1 mm. The back focal length (BFL) of the lens is -91.3 mm. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties.
This lens is suitable for use in various applications that require a concave lens. Its high-quality material and precise manufacturing ensure excellent optical performance. The lens is currently in stock and can be purchased directly from the vendor's website. For more information, please refer to the provided weblink.
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