45-029 25.0mm Dia. x -50 FL; MgF2 Coated; Plano-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -50 mm
- BFL
- -52.31 mm
- R1
- -25.84 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
45-029 25.0mm Dia. x -50 FL; MgF2 Coated; Plano-Concave Lens 400-700nm
The 45-029 is a plano-concave lens with a diameter of 25.0mm, a focal length of -50, and a central thickness of 3.5mm. The edge thickness is 6.33mm, and the lens has a clear aperture. The lens is made of BK7 Schott glass, a popular choice for its high homogeneity and excellent optical transmission in the visible spectrum.
The lens is coated with MgF2, a broadband anti-reflection coating that reduces reflection across the entire spectral range of 400-700nm. This coating enhances the lens's transmission, making it suitable for use in high-performance optical systems that require low loss and high damage threshold.
The lens's geometry is spherical, with a radius of curvature of -25.84mm on the concave surface. The back focal length is -52.31mm, and the lens has no inner or outer radius, indicating a plano surface on the incident side.
This lens is available from Edmund Optics and is in stock at the time of writing. For more information, including pricing and availability, please refer to the provided weblink.
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