SLB-20-80NIR2 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
- 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-20-80NIR2 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
The SLB-20-80NIR2 is a Plano-Concave Spherical Lens, 20.0 mm in diameter and featuring 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's geometry includes a thickness edge of 3.2 mm and a thickness center of 2 mm, providing a robust structure. The inner and outer radii are both 0 mm, indicating a flat surface on one side and a curved surface on the other. The lens's effective focal length (EFL) is -80.0 mm, and the back focal length (BFL) is -81.3 mm, suggesting a strong converging capability.
The SLB-20-80NIR2 is coated with opt ir2 on both the front and back surfaces, enhancing its performance in the 750-1550nm wavelength range. This coating ensures high transmission and low reflection, making it suitable for use in various applications, including but not limited to, infrared spectroscopy, thermal imaging, and optical fiber communication.