LB4854-A UV Fused Silica Bi-Convex Lens; Dia:0.5 in; f=20.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 20 mm
- BFL
- 18.5 mm
- R1
- 17.7 mm
- R2
- -17.7 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458448271212196
- λ
- 588 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
LB4854-A UV Fused Silica Bi-Convex Lens; Dia:0.5 in; f=20.0 mm ARC 350-700nm
The LB4854-A is a high-quality bi-convex lens made from UV fused silica, a material known for its excellent transmission properties in the ultraviolet range. This lens, with a diameter of 0.5 inches and a focal length of 20.0 mm, is designed for use in applications where high-precision focusing is required.
The lens features a spherical shape, with radii of curvature of 17.7 mm for the first surface and -17.7 mm for the second surface. This design results in a back focal length of 18.5 mm and an effective focal length of 20 mm. The lens has a central thickness of 4.2 mm and an edge thickness of 1.8 mm, providing robustness and durability.
The LB4854-A is coated with Thorlabs' ARC coating, which is designed to enhance transmission in the 350-700 nm range. This coating reduces surface reflections, improving the overall efficiency of the optical system. The lens is available from Thorlabs, a leading vendor in the field of optical components.
More Lens
