LA1765-A N-BK7 Plano-Convex Lens; Dia:30.0 mm; f=75.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- 75 mm
- BFL
- 71.1 mm
- R1
- 38.6 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
LA1765-A N-BK7 Plano-Convex Lens; Dia:30.0 mm; f=75.0 mm ARC 350-700nm
The LA1765-A is a high-quality plano-convex lens from Thorlabs, designed with a spherical surface and a circular base shape. This lens is fabricated from N-BK7, a popular glass type known for its excellent optical properties, making it an ideal choice for various applications.
The lens has a diameter of 30.0 mm and a thickness of 2.5 mm at the edge, while the center thickness measures 5.5 mm. The effective focal length (EFL) is 75.0 mm, and the radius of curvature (ROC) for the curved surface is 38.6 mm. The back focal length (BFL) is 71.1 mm, and both the inner and outer radii are 0 mm.
This lens is designed for use with a wavelength of 587.6 nm and features anti-reflection (AR) coatings on both the front and back surfaces. These coatings, identified as "tho a bbar," are optimized for the 350-700 nm range, further enhancing the lens' performance and versatility.