89-190 30mm Dia. x 75mm 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
- 75 mm
- BFL
- 73.35 mm
- R1
- 76.67 mm
- R2
- -76.67 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
89-190 30mm Dia. x 75mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-190 is a Double-Convex Lens, a type of Spherical Lens, sourced from Edmund Optics. This lens boasts a diameter of 30mm and a focal length of 75mm, making it a versatile choice for various optical applications. The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low dispersion.
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 light transmission capabilities, reducing surface reflections and improving overall image quality.
The geometry of the lens is also noteworthy. It has an edge thickness of 2mm and a center thickness of 4.96mm. The lens's inner and outer radii are not specified, but its front and back focal lengths are 76.67mm and -76.67mm, respectively, and its back focal length is 73.35mm.