SLB-50.8B-80PM 50.8 mm Dia. x 81.8 mm FL; Coated; Double-Convex Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 81.8 mm
- BFL
- 78.2 mm
- R1
- 83.04 mm
- R2
- -83.04 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-50.8B-80PM 50.8 mm Dia. x 81.8 mm FL; Coated; Double-Convex Lens 400-700nm
This is a high-quality spherical lens, specifically a double-convex lens, sourced from OptoSigma. It is designed with a base shape of a circle and has a diameter of 50.8 mm. The lens has a center thickness of 11 mm and an edge thickness of 3 mm, providing a robust structure for various applications.
The effective focal length (EFL) of this lens is 81.8 mm, making it suitable for applications that require a longer focal length. The first radius of curvature (R1) is 83.04 mm, and the second radius of curvature (R2) is -83.04 mm, indicating its double-convex geometry. The back focal length (BFL) is 78.2 mm.
The lens is made of n-bk7 schott material, a popular choice for its high refractive index and low dispersion. It is designed to work optimally with a wavelength of 546.1 nm.
The lens features a coating on both the front and back surfaces. The coating is Opt M, which is known for its excellent optical properties, including high transmittance and durability. This coating enhances the lens's performance in the spectral range of 400-700 nm.