SLB-40B-40N 40.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- -39.7 mm
- BFL
- -40.3 mm
- R1
- -41.52 mm
- R2
- 41.52 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-40B-40N 40.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated
The SLB-40B-40N is a high-quality double-concave lens, sourced from the reputable optical components manufacturer, OptoSigma. This lens is characterized by its spherical geometry, with a diameter of 40.0 mm and a center thickness of 2.0 mm. The lens's concave-concave design, featuring radii of curvature of -41.52 mm and 41.52 mm, contributes to its double-concave nature.
The lens's significant negative focal length of -39.7 mm, combined with its base shape of a circle, makes it suitable for a wide range of optical applications. The lens is made from the high-quality material n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties, including a low refractive index and low dispersion.
The lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. This lens is currently in stock and available for immediate purchase, with further details available on the OptoSigma website.