SLB-25-35NIR2 25.0 mm Dia. x -35.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -35 mm
- BFL
- -36.3 mm
- R1
- -18.17 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-25-35NIR2 25.0 mm Dia. x -35.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
The SLB-25-35NIR2 is a Plano-Concave Spherical Lens, 25.0 mm in diameter and featuring a focal length of -35.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-bk7 schott, a high-quality material known for its excellent optical properties.
The lens's geometry is meticulously designed, with an edge thickness of 7 mm and a center thickness of 2 mm. The inner and outer radii are both zero, indicating a uniform curvature. The back focal length is -36.3 mm, slightly longer than the focal length, suggesting a slight divergence of the emerging light rays.
The SLB-25-35NIR2 is coated with Opt IR2, a broadband anti-reflection coating that enhances transmission in the 750-1550nm spectral range. This coating reduces surface reflections, improving the lens's performance in near-infrared applications.
This lens is ideal for use in systems that require a negative lens with a broad spectral response. Its high-quality material, precise geometry, and advanced coating make it a reliable choice for various optical applications.