SLB-25-70NM 25.0 mm Dia. x -70.0 mm FL; Coated; Plano-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 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-25-70NM 25.0 mm Dia. x -70.0 mm FL; Coated; Plano-Concave Lens 400-700nm
This is a Plano-Concave Spherical Lens, sourced from the reputable vendor OptoSigma. The lens has a diameter of 25.0 mm and a focal length of -70.0 mm, making it suitable for a variety of optical applications. The lens is made from n-bk7 schott material, a popular choice due to its excellent optical properties.
The lens features a double-sided coating, with both the front and back surfaces coated with opt m. This coating enhances the lens's performance in the spectral range of 400-700nm, providing improved transmission and reduced reflection.
The lens has a thickness of 4.2 mm at the edge and 2.0 mm at the center, providing a robust structure while maintaining a low profile. The inner and outer radii are 0, indicating a flat surface on one side and a curved surface on the other. The curvature of the lens is defined by a radius of -36.33 mm on the curved side, and the back focal length is -71.3 mm.
This lens is in stock and available for immediate purchase. For more information, please refer to the vendor's website using the provided weblink.