LB4915-B UV Fused Silica Bi-Convex Lens; Dia:0.5 in; f=50.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 50 mm
- BFL
- 49.1 mm
- R1
- 45.6 mm
- R2
- -45.6 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
LB4915-B UV Fused Silica Bi-Convex Lens; Dia:0.5 in; f=50.0 mm ARC 650-1050nm
The LB4915-B is a high-quality bi-convex lens, designed and manufactured by Thorlabs, a leading vendor in the optical industry. This lens boasts a diameter of 0.5 inches and a focal length of 50.0 mm, making it suitable for a wide range of optical applications.
The lens is made from UV Fused Silica, a material known for its excellent transmission properties across a broad spectrum, from 190 to 2000 nm. This makes the LB4915-B particularly suitable for applications that require high transmission in the ultraviolet range, such as UV spectroscopy or fluorescence microscopy.
The lens features a spherical geometry, with radii of curvature of 45.6 mm for both the front and back surfaces. This geometry, combined with the lens's high refractive index, allows for excellent image formation and focusing capabilities. The lens has a central thickness of 2.7 mm and an edge thickness of 1.8 mm, providing robustness and durability.
The LB4915-B is coated with Thorlabs' BBAR coating, which is designed to reduce surface reflections and increase transmission. This coating is applied to both the front and back surfaces of the lens and is optimized for the 650-1050 nm range, making it ideal for near-infrared applications.
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