SLB-25.4B-200N 25.4 mm Dia. x -199.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -199.7 mm
- BFL
- -200.4 mm
- R1
- -207.6 mm
- R2
- 207.6 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-25.4B-200N 25.4 mm Dia. x -199.7 mm FL; Double-Concave Lens Uncoated
The SLB-25.4B-200N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed with a base shape of a circle, is fabricated from the renowned material n-bk7 schott, ensuring durability and reliability.
The lens boasts a diameter of 25.4 mm and a thickness at the edge of 2.8 mm, while the center thickness is 2 mm. The effective focal length (EFL) is -199.7 mm, indicating its double-concave nature. The first radius of curvature (R1) is -207.6 mm, and the second radius (R2) is 207.6 mm, contributing to its concave-concave geometry.
The back focal length (BFL) is -200.4 mm, and the lens does not have any inner or outer radius, indicating a uniform curvature throughout. The wavelength for this lens is 546.1 nm, and it is offered uncoated, providing users with the flexibility to apply their preferred coating based on their specific application requirements.
