89-188 30mm Dia. x 50mm 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
- 30 mm
- EFL
- 50 mm
- BFL
- 47.82 mm
- R1
- 50.56 mm
- R2
- -50.56 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
89-188 30mm Dia. x 50mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-188 is a high-quality double-convex lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 30mm and a focal length of 50mm, is designed for use within the visible light spectrum, specifically between 350-700nm.
The lens is made from Schott's n-BK7 glass, a borosilicate crown glass known for its excellent optical properties, including a low refractive index and low dispersion. This makes the lens ideal for applications that require high image quality and minimal distortion.
The lens surfaces are coated with Edmund Optics' VIS-EXT coating, which is designed to enhance transmission within the visible spectrum. This coating reduces surface reflections, improving light transmission and enhancing the overall performance of the lens.
The geometry of the lens is carefully designed, with an inner radius of 0mm and an outer radius of 0mm. The edge thickness of the lens is 2mm, while the center thickness is 6.55mm. The back focal length (BFL) is 47.82mm, and the effective focal length (EFL) is 50mm.