33-420 40mm Dia. x 80mm FL; MgF2 Coated; Double-Convex Lens MgF2 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 80 mm
- BFL
- 77.32 mm
- R1
- 81.3 mm
- R2
- -81.3 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
33-420 40mm Dia. x 80mm FL; MgF2 Coated; Double-Convex Lens MgF2 400-700nm
This is a high-quality double-convex lens, sourced from the renowned optical components vendor, Edmund Optics. The lens, identified as the 33-420, boasts a diameter of 40mm and a focal length of 80mm, making it a versatile choice for various optical applications.
The lens is crafted from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical durability. The double-convex geometry, with radii of curvature of 81.3mm for both the front and back surfaces, ensures efficient light gathering and focusing.
The lens features a standard MgF2 coating on both the front and back surfaces. This coating, designed for the wavelength range of 400-700nm, reduces reflection and enhances transmission, thereby improving overall system performance.
The lens has an edge thickness of 3mm and a center thickness of 8mm, providing robustness and resistance to damage during handling and use. The effective focal length (EFL) is 80mm, and the back focal length (BFL) is 77.32mm, offering flexibility in optical design and setup.
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