SLB-50.8B-60NIR1 50.8 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 633-1064nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- -59.5 mm
- BFL
- -60.5 mm
- R1
- -62.28 mm
- R2
- 62.28 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-50.8B-60NIR1 50.8 mm Dia. x -59.5 mm FL; Coated; Double-Concave Lens 633-1064nm
The SLB-50.8B-60NIR1 is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, with a diameter of 50.8 mm, is designed for use in the spectral range of 633-1064nm, making it suitable for a wide range of applications in the near-infrared region.
The lens features a base shape of a circle and is constructed from n-bk7 schott, a material known for its excellent optical properties. The double-concave geometry of the lens is defined by its radii of curvature, with r1 at -62.28 and r2 at 62.28. This geometry results in a back focal length of -60.5 and an effective focal length of -59.5.
The lens has a thickness of 13.8 mm at the edge and 3 mm at the center, providing a robust structure while maintaining high optical performance. The lens is coated with opt ir1 on both the front and back surfaces, enhancing its transmission capabilities within the specified wavelength range.
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