SLB-50B-60NM 50.0 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- -59.5 mm
- BFL
- -60.5 mm
- R1
- -62.28 mm
- R2
- 62.28 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-50B-60NM 50.0 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 400-700nm
The SLB-50B-60NM is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a diameter of 50.0 mm, is specifically engineered for use within the wavelength range of 400-700nm, making it suitable for a wide range of optical applications.
The lens features a base shape of a circle, with a thickness at the edge of 13.5 mm and a center thickness of 3 mm. The effective focal length (EFL) of this lens is -59.5 mm, and it has a back focal length (BFL) of -60.5 mm. The first radius of curvature (R1) is -62.28 mm, while the second radius of curvature (R2) is 62.28 mm. The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties.
The SLB-50B-60NM is coated with Opto-M (opt m) on both the front and back surfaces, enhancing its performance in the specified wavelength range. This coating helps to reduce reflection and increase transmission, thereby improving the overall efficiency of the optical system in which it is used.