LB4821-B UV Fused Silica Bi-Convex Lens; Dia:2 in; f=100.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 100 mm
- BFL
- 96.4 mm
- R1
- 90.4 mm
- R2
- -90.4 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
LB4821-B UV Fused Silica Bi-Convex Lens; Dia:2 in; f=100.0 mm ARC 650-1050nm
The LB4821-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 2 inches, or 50.8 millimeters, and a focal length of 100.0 millimeters, making it a versatile choice for a wide range of optical applications.
The lens is crafted from UV Fused Silica, a material with a high transmission range, making it ideal for use in the ultraviolet spectrum. The UV Fused Silica is identified by the Material ID "uvfs mal- 1965" in the item data. This material also offers excellent thermal and chemical resistance, ensuring durability and longevity.
The LB4821-B features a spherical shape, with radii of curvature of 90.4 millimeters for the first surface and -90.4 millimeters for the second surface. This bi-convex design provides a large, high-quality beam waist, making it suitable for use in applications requiring high power or energy.
The lens is coated with Thorlabs' BBAR coating on both the front and back surfaces. This Anti-Reflection coating, identified as "tho b bbar" in the item data, enhances the lens's transmission in the 650-1050 nanometer range, further expanding its potential applications.