SLB-20B-20PIR2 20.0 mm Dia. x 21.2 mm FL; Coated; Double-Convex Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 21.2 mm
- BFL
- 18.8 mm
- R1
- 20.76 mm
- R2
- -20.76 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-20PIR2 20.0 mm Dia. x 21.2 mm FL; Coated; Double-Convex Lens 750-1550nm
The SLB-20B-20PIR2 is a high-quality lens offered by OptoSigma, designed for use in the 750-1550nm wavelength range. This lens is a Spherical Lens (Convex-Convex) type, featuring a base shape of Circular for versatile application.
The lens has a diameter of 20.0 mm and a thickness edge of 2.0 mm, ensuring durability and robustness. The thickness center is 7.1 mm, providing a balance between compactness and optical performance. The effective focal length (EFL) of this lens is 21.2 mm, making it suitable for various optical systems.
The first radius of curvature (R1) is 20.76 mm, while the second radius of curvature (R2) is -20.76 mm, indicating a double-convex lens design. The back focal length (BFL) is 18.8 mm, which is crucial for determining the position of the lens in an optical system. The inner and outer radii are 0 mm, suggesting a symmetrical lens design.
The lens is made of n-bk7 schott material, a popular choice for its excellent optical properties and versatility. The front and back of the lens are coated with opt ir2, a coating that enhances the lens' performance in the infrared spectrum.
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