SLB-05B-20PIR2 5.0 mm Dia. x 20.2 mm FL; Coated; Double-Convex Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 5 mm
- EFL
- 20.2 mm
- BFL
- 19.8 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-05B-20PIR2 5.0 mm Dia. x 20.2 mm FL; Coated; Double-Convex Lens 750-1550nm
The SLB-05B-20PIR2 is a spherical lens with a base shape of a circle, sourced from the reputable vendor OptoSigma. This lens is designed for use in the infrared spectrum, specifically between 750nm and 1550nm, making it suitable for a wide range of applications in this wavelength range.
The lens has a diameter of 5.0mm and a thickness at the edge of 1.1mm, while the thickness at the center is 1.4mm. The effective focal length (EFL) of this lens is 20.2mm, which is a crucial parameter in lens selection. The first radius of curvature (R1) is 20.76mm, and the second radius of curvature (R2) is -20.76mm, indicating a double-convex lens design. The back focal length (BFL) is 19.8mm.
The lens is made from n-bk7 schott, a popular material for optical lenses due to its excellent optical properties. The lens is coated with opt ir2 on both the front and back surfaces, which is a broadband anti-reflection coating designed for the infrared spectrum.