SLSQ-25B-70N 25.0 mm Dia. x -69.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -69.7 mm
- BFL
- -70.3 mm
- R1
- -64.4 mm
- R2
- 64.4 mm
Material
- Name
- Fused Silica
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.460077010624967
- λ
- 546.1 nm
- B1
- 0.6961663
- C1
- 0.00467914825849 μm2
- B2
- 0.4079426
- C2
- 0.013512063073959999 μm2
- B3
- 0.8974794
- C3
- 97.934002537921 μm2
SLSQ-25B-70N 25.0 mm Dia. x -69.7 mm FL; Double-Concave Lens Uncoated
The SLSQ-25B-70N is a high-quality, double-concave lens offered by OptoSigma. This lens, with a diameter of 25.0 mm, is designed for use in a wide range of optical applications. The lens's base shape is circular, and it features a double-concave geometry, making it suitable for applications requiring a negative lens.
The lens has a center thickness of 2.0 mm and an edge thickness of 4.5 mm, providing excellent structural integrity. The effective focal length (EFL) of this lens is -69.7 mm, and the back focal length (BFL) is -70.3 mm. The radii of curvature for the first and second surfaces are -64.4 mm and 64.4 mm, respectively.
This lens is made from fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock. The material ID for this lens is "fused sil mal-1965", indicating its specific type of fused silica.
The lens is uncoated, which means it does not have any anti-reflective or other coatings. This may be suitable for applications where such coatings are not required or desirable.
The lens is designed to work with a wavelength of 546.1 nm, making it suitable for use in a wide range of applications, including microscopy, beam shaping, and laser applications.
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