89-135 6mm Dia. x 36mm 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
- 6 mm
- EFL
- 36 mm
- BFL
- 35.33 mm
- R1
- 36.87 mm
- R2
- -36.87 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
89-135 6mm Dia. x 36mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-135 is a double-convex lens, characterized by its spherical shape and circular base. This lens, sourced from Edmund Optics, boasts a diameter of 6mm and a focal length of 36mm. The lens's geometry is further defined by its edge thickness of 1.76mm and center thickness of 2mm, contributing to its overall profile.
The lens's material composition is Schott's n-BK7, a popular choice in the optical industry due to its excellent optical properties and versatility. The lens is coated with EDM VIS-EXT on both the front and back surfaces, enhancing its performance within the visible light spectrum, specifically between 350-700nm.
The EFL (Effective Focal Length) of the lens is 36mm, while the BFL (Back Focal Length) is 35.33mm. The first radius of curvature (R1) is 36.87mm, and the second radius of curvature (R2) is -36.87mm, indicating the lens's double-convex nature. The inner and outer radii are both 0mm, suggesting a uniform curvature throughout the lens.