SLB-30-70NIR2 30.0 mm Dia. x -70.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- -70 mm
- BFL
- -71.3 mm
- R1
- -36.33 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-30-70NIR2 30.0 mm Dia. x -70.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
OptoSigma presents the SLB-30-70NIR2, a Plano-Concave Lens with a 30.0 mm diameter and a focal length of -70.0 mm, specifically designed for the spectral range of 750-1550nm. This lens is made of n-bk7 schott material, a popular choice for its excellent optical properties and versatility.
The lens geometry is characterized by a thickness edge of 5.2 mm and a thickness center of 2 mm, ensuring robustness and precision. The inner and outer radii are both zero, indicating a planar surface on one side and a concave surface on the other. The radius of curvature (R1) is -36.33 mm, and the back focal length (BFL) is -71.3 mm, further detailing the lens's concave shape.
The SLB-30-70NIR2 is coated with Opt IR2 on both the front and back surfaces, enhancing its performance in the specified infrared spectrum. This coating reduces reflection and increases transmission, making it ideal for applications that require high-quality imaging or light transmission in the near and shortwave infrared ranges.