SLB-15B-20PIR2 15.0 mm Dia. x 20.8 mm FL; Coated; Double-Convex Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 20.8 mm
- BFL
- 19.2 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-15B-20PIR2 15.0 mm Dia. x 20.8 mm FL; Coated; Double-Convex Lens 750-1550nm
The SLB-15B-20PIR2 is a high-quality spherical lens offered by OptoSigma, designed for use in the 750-1550nm wavelength range. This lens, with a base shape of a circle, is a double-convex lens, meaning it has two convex surfaces.
The lens has a diameter of 15.0 mm and a thickness at the edge of 2.0 mm. The center thickness is 4.8 mm, providing a robust structure for various applications. The effective focal length (EFL) of this lens is 20.8 mm, which is the distance from the lens's secondary principal plane to the focal point.
The first radius of curvature (R1) is 20.76 mm, and the second radius of curvature (R2) is -20.76 mm, indicating the lens's convex-convex shape. The back focal length (BFL) is 19.2 mm, which is the distance from the lens's rear surface to its focal point.
The lens is made of n-bk7 schott, a popular optical glass known for its excellent optical properties. It features a coating of opt ir2 on both the front and back surfaces, enhancing its performance in the specified wavelength range.
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