SLB-20B-80PIR2 20.0 mm Dia. x 80.5 mm FL; Coated; Double-Convex Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 80.5 mm
- BFL
- 79.5 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-20B-80PIR2 20.0 mm Dia. x 80.5 mm FL; Coated; Double-Convex Lens 750-1550nm
The SLB-20B-80PIR2 is a high-quality lens from 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 stability. The thickness center measures 3.2 mm, providing a robust structure for various optical setups. The effective focal length (EFL) of this lens is 80.5 mm, making it suitable for medium to long-range optical systems.
The first radius of curvature (R1) is 83.04 mm, while the second radius (R2) is -83.04 mm, indicating a double-convex lens design. The back focal length (BFL) is 79.5 mm, which is crucial for determining the position of the lens in an optical system. The inner and outer radii are 0 mm each, suggesting a simple, straightforward design.
The lens is made from n-bk7 schott material, a common and reliable choice for optical components due to its excellent optical properties. The lens is coated with opt ir2 on both the front and back, enhancing its performance in the specified wavelength range.
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