SLB-25B-40NIR1 25.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 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-25B-40NIR1 25.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 633-1064nm
The SLB-25B-40NIR1 is a high-quality double-concave lens, boasting a diameter of 25.0 mm and a focal length of -39.7 mm. This lens is sourced from OptoSigma, a renowned vendor known for their precision optical elements. The lens is made from n-bk7 schott, a material widely used in optical systems due to its excellent optical properties.
The lens features a unique double-concave geometry, with radii of curvature of -41.52 mm and 41.52 mm for the front and back surfaces, respectively. This geometry results in a back focal length of -40.3 mm, making it suitable for a wide range of applications. The lens has an edge thickness of 5.9 mm and a center thickness of 2 mm, providing robustness and durability.
The SLB-25B-40NIR1 is coated with opt ir1 on both the front and back surfaces. This coating enhances the lens's performance in the 633-1064nm wavelength range, making it ideal for use in systems operating in this spectrum. The lens's spherical shape ensures excellent optical performance, making it a reliable choice for various applications.
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