45-185 4.5mm Dia. x 9mm FL; Uncoated; Double-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 4.5 mm
- EFL
- 9 mm
- BFL
- 8.16 mm
- R1
- 8.88 mm
- R2
- -8.88 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
45-185 4.5mm Dia. x 9mm FL; Uncoated; Double-Convex Lens
The 45-185 4.5mm Dia. x 9mm FL is a high-quality, uncoated, double-convex lens sourced from Edmund Optics. This lens, with a base shape of a circle, is a spherical lens featuring a convex-convex design, making it ideal for a wide range of optical applications.
The lens has a diameter of 4.5mm and a thickness at the edge of 1.8mm, while the center thickness measures 2.38mm. The effective focal length (EFL) of this lens is 9mm, and the radii of curvature are 8.88mm for the first surface and -8.88mm for the second surface. The back focal length (BFL) is 8.16mm, and both the inner and outer radii are 0mm.
This lens is made of the renowned N-BK7 Schott glass, which is known for its excellent optical properties, including high homogeneity, low auto-fluorescence, and superior transmittance in the ultraviolet, visible, and near-infrared regions. The lens is designed to work optimally at a wavelength of 587.6nm.
The lens is uncoated, which means it does not have any anti-reflective or other coatings. While coatings can enhance the performance of a lens in specific applications, an uncoated lens can be advantageous in situations where cost, simplicity, or specific optical characteristics are the primary considerations.
