SLB-40B-40NIR2 40.0 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
- 40 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-40B-40NIR2 40.0 mm Dia. x -39.7 mm FL; Coated; Double-Concave Lens 750-1550nm
The SLB-40B-40NIR2 is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a diameter of 40.0 mm and a focal length of -39.7 mm, is specifically engineered for use within the wavelength range of 750-1550nm, making it ideal for near-infrared applications.
The lens is made from the highly respected material, n-BK7 schott, which is renowned for its excellent optical properties. The base shape of the lens is circular, and it features a spherical geometry, with an inner radius of 0 and an outer radius of 0. The lens has a thickness of 12.3 mm at the edge and 2 mm at the center, providing a robust and durable structure.
The SLB-40B-40NIR2 is coated with Opt IR2 on both the front and back surfaces. This coating enhances the lens's performance within its specified wavelength range, improving transmission and reducing unwanted reflections. The coating also provides protection to the lens surface, increasing its longevity and resistance to environmental factors.
This lens is currently in stock and available for immediate purchase. For more information, including detailed specifications and purchasing options, please refer to the provided weblink.