LA1908-780 N-BK7 Plano-Convex Lens; Dia:1 in; f=500.0 mm 780nm V-Coat
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 500 mm
- BFL
- 496.81 mm
- R1
- 257.5 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LA1908-780 N-BK7 Plano-Convex Lens; Dia:1 in; f=500.0 mm 780nm V-Coat
The LA1908-780 is a Plano-Convex lens, part of the extensive catalog of optical elements offered by Thorlabs. This lens, with a diameter of 1 inch, is designed for use at a wavelength of 780nm and features a focal length of 500mm. The lens is made of N-BK7, a popular glass type in the optical industry, known for its excellent optical properties and versatility.
The lens's geometry is characterized by a thickness of 2mm at the edge and 2.3mm at the center. The front surface has a radius of curvature of 257.5mm, resulting in a back focal length of 496.81mm. The lens's effective focal length (EFL) is 500mm. The lens's inner and outer radii are both zero, indicating a flat back surface.
The LA1908-780 is coated with a V-coat, specifically designed for the 780nm wavelength. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving the overall system's efficiency.
