SLB-20-80NIR1 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 633-1064nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -80 mm
- BFL
- -81.3 mm
- R1
- -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-20-80NIR1 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 633-1064nm
The SLB-20-80NIR1 is a plano-concave lens with a diameter of 20.0 mm and a focal length of -80.0 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 features a spherical shape, with a front radius of curvature (R1) of -41.52 mm and a back focal length (BFL) of -81.3 mm. The edge thickness of the lens is 3.2 mm, while the center thickness is 2 mm. The effective focal length (EFL) of the lens is -80 mm, indicating its concave nature.
The lens is coated with opt ir1 on both the front and back surfaces, providing enhanced performance in the wavelength range of 633-1064 nm. This coating ensures high transmission and low reflection, making the lens suitable for various applications in this wavelength range.