SLB-20-40NM 20.0 mm Dia. x -40.0 mm FL; Coated; Plano-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -40 mm
- BFL
- -41.3 mm
- R1
- -20.76 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-20-40NM 20.0 mm Dia. x -40.0 mm FL; Coated; Plano-Concave Lens 400-700nm
The SLB-20-40NM is a Plano-Concave Spherical Lens, sourced from OptoSigma, with a diameter of 20.0 mm and a focal length of -40.0 mm. This lens is designed for use within the wavelength range of 400-700nm, making it suitable for a wide range of optical applications.
The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. The lens's geometry includes an inner radius of 0 and an outer radius of 0, with a thickness at the edge of 4.6 mm and a thickness at the center of 2 mm. The back focal length (bfl) is -41.3 mm, and the radius of curvature (r1) is -20.76 mm.
The SLB-20-40NM is coated with an opt m coating on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency of the optical system.
The lens is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website using the provided weblink.
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