63-689 40mm Dia. x 120mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 120 mm
- BFL
- 117.67 mm
- R1
- 122.83 mm
- R2
- -122.83 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
63-689 40mm Dia. x 120mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
The 63-689 is a high-quality double-convex lens, boasting a 40mm diameter and a focal length of 120mm. This lens is sourced from the reputable vendor, Edmund Optics, and is designed for use within the visible to near-infrared spectrum, spanning 400-1000nm.
The lens is constructed from Schott's n-BK7 glass, a material renowned for its excellent optical properties, including a high Abbe number and low dispersion. This makes the lens ideal for applications that require high image quality and minimal chromatic aberration.
The lens features a spherical shape, with radii of curvature of 122.83mm for the first surface and -122.83mm for the second. This design results in a double-convex lens, which is particularly effective at focusing light. The lens has an edge thickness of 3.72mm and a center thickness of 7mm, contributing to its robustness and durability.
The 63-689 lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces. This coating is designed to enhance the lens's performance within the visible to near-infrared spectrum, improving transmission and reducing reflection.