SLB-25B-40N 25.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 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-25B-40N 25.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated
The SLB-25B-40N is a high-quality double-concave lens, uncoated, with a diameter of 25.0 mm and a focal length of -39.7 mm. This lens is sourced from OptoSigma, a renowned vendor known for their extensive range of optical elements.
The lens is made of n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. The base shape of the lens is circular, and it features a spherical geometry, with a center thickness of 2.0 mm and an edge thickness of 5.9 mm. The inner and outer radii are 0, indicating a symmetrical design.
The lens has a back focal length of -40.3 mm and an effective focal length of -39.7 mm. It is designed to operate at a wavelength of 546.1 nm. The lens is uncoated, offering users the flexibility to apply their own coatings based on their specific requirements.
The lens is currently in stock and can be purchased directly from the vendor's website. The provided weblink leads directly to the product page for easy access and purchase.