89-161 15mm Dia. x 30mm 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
- 15 mm
- EFL
- 30 mm
- BFL
- 28.82 mm
- R1
- 30.5 mm
- R2
- -30.5 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
89-161 15mm Dia. x 30mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-161 is a double-convex lens, characterized by its circular base shape and spherical geometry. This lens, sourced from Edmund Optics, boasts a diameter of 15mm and a focal length of 30mm, making it a versatile choice for various optical applications. The lens's edge thickness measures at 2.13mm, while the center thickness is 4mm, contributing to its robust construction.
The lens's effective focal length (EFL) is 30mm, and its first and second radii (R1 and R2) are 30.5mm and -30.5mm respectively. The back focal length (BFL) is 28.82mm, and both the inner and outer radii are 0mm. These specifications contribute to the lens's high-performance capabilities.
The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low dispersion. This material makes the lens suitable for use in a wide range of wavelengths, specifically 587.6nm.
The lens features VIS-EXT coatings on both the front and back surfaces. These coatings, specific to the visible spectrum (350-700nm), enhance the lens's transmission and reduce reflection, thereby improving overall image quality.
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