SLB-20-30NIR1 20.0 mm Dia. x -30.0 mm FL; Coated; Plano-Concave Lens 633-1064nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -30 mm
- BFL
- -31.3 mm
- R1
- -15.57 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-20-30NIR1 20.0 mm Dia. x -30.0 mm FL; Coated; Plano-Concave Lens 633-1064nm
The SLB-20-30NIR1 is a Plano-Concave Spherical Lens, sourced from OptoSigma, with a diameter of 20.0 mm and a focal length of -30.0 mm. This lens is designed for use within the wavelength range of 633-1064nm, making it suitable for near-infrared (NIR) applications.
The lens is fabricated from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens features a concave shape on one side, with a radius of curvature of -15.57 mm, and a flat surface on the other side. The center thickness of the lens is 2 mm, while the edge thickness measures 5.6 mm, providing robustness and ensuring minimal optical distortion.
The SLB-20-30NIR1 comes with a front and back coating of opt IR1, which is specifically designed for the 633-1064nm wavelength range. This coating enhances the lens's performance by reducing surface reflections and improving transmission, thereby minimizing light loss and increasing the overall efficiency of the optical system.
