89-121 3mm Dia. x 9mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 3 mm
- EFL
- 9 mm
- BFL
- 8.46 mm
- R1
- 9.02 mm
- R2
- -9.02 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
89-121 3mm Dia. x 9mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-121 is a high-quality double-convex lens, boasting a 3mm diameter and a focal length of 9mm. This lens is sourced from the reputable vendor, Edmund Optics, and is available in stock for immediate use. The lens is fabricated from the renowned N-BK7 glass, a borosilicate crown glass known for its excellent optical properties, including low dispersion and high homogeneity.
The lens features a front and back coating of EDM VIS-EXT, a broadband anti-reflection coating designed for use in the visible spectrum, specifically between 350-700nm. This coating enhances the lens's performance by reducing surface reflections, thereby increasing transmission and improving image quality.
The lens's geometry is meticulously designed, with a thickness of 1.35mm at the edge and 1.6mm at the center. The front and back radii of curvature are 9.02mm and -9.02mm, respectively, contributing to the lens's double-convex shape. The back focal length is 8.46mm, and the lens has no inner or outer radius, indicating a uniform curvature throughout.
