SLB-20B-90PM 20.0 mm Dia. x 90.5 mm FL; Coated; Double-Convex Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 90.5 mm
- BFL
- 89.5 mm
- R1
- 93.42 mm
- R2
- -93.42 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-20B-90PM 20.0 mm Dia. x 90.5 mm FL; Coated; Double-Convex Lens 400-700nm
The SLB-20B-90PM is a high-quality double-convex lens, designed and manufactured by OptoSigma. This lens boasts a 20.0 mm diameter and a focal length of 90.5 mm, making it suitable for a wide range of optical applications. The lens is made from n-bk7 schott, a popular material known for its excellent optical properties.
The lens features a double-convex geometry, with radii of curvature of 93.42 mm for both the front and back surfaces. This geometry, combined with the lens's high-quality manufacturing, ensures excellent image quality and low distortion. The lens has an edge thickness of 2 mm and a center thickness of 3.1 mm, providing robustness and durability.
The SLB-20B-90PM is coated with an opt m coating on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, particularly within the 400-700 nm wavelength range. The lens's coating also provides excellent environmental resistance, ensuring long-term performance and reliability.
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