SLB-15B-40NIR2 15.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- -39.7 mm
- BFL
- -40.3 mm
- R1
- -41.52 mm
- R2
- 41.52 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-40NIR2 15.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm
The SLB-15B-40NIR2 is a high-quality double-concave lens, 15.0 mm in diameter, designed for use in the 750-1550nm wavelength range. This lens is sourced from OptoSigma, a renowned vendor known for their precision optical components.
The lens is made from n-bk7 schott, a popular material for optical lenses due to its excellent optical properties. It features a base shape of a circle, with a thickness of 3.4mm at the edge and 2mm at the center. The effective focal length (EFL) of this lens is -39.7mm, making it suitable for a variety of applications that require a negative focal length.
The radii of curvature for this lens are -41.52mm for the first surface and 41.52mm for the second surface. The back focal length (BFL) is -40.3mm. The lens does not have any inner or outer radius, indicating a uniform thickness.
The lens is coated with opt ir2 on both the front and back surfaces, enhancing its performance in the specified wavelength range. This coating helps to reduce reflection and increase transmission, making the lens more efficient in its function.
More Lens
