13-462 25mm Dia. CaF2 Aspheric Lens; EFL=20mm; NA=0.63 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 20 mm
- BFL
- 10.97 mm
- R1
- 10.28 mm
- R2
- 50 mm
Material
- Name
- CaF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4620932864847525
- λ
- 266 nm
- B1
- 0.5675888
- C1
- 0.00252643 μm2
- B2
- 0.4710914
- C2
- 0.010078333 μm2
- B3
- 3.8484723
- C3
- 1200.555973 μm2
13-462 25mm Dia. CaF2 Aspheric Lens; EFL=20mm; NA=0.63 Uncoated
The 13-462 is a high-quality aspheric lens, boasting a 25mm diameter and a focal length of 20mm. This lens is crafted from Calcium Fluoride (CaF2) material, specifically the Mal-1963 variant, which is renowned for its excellent optical properties. The lens is uncoated, offering a numerical aperture (NA) of 0.63, enhancing its light-gathering capabilities.
The lens geometry is meticulously designed, with an inner radius of 0mm and an outer radius of 0mm. The thickness at the edge is 4.51mm, while the effective focal length (EFL) is 20mm. The lens features a first radius (r1) of 10.284mm and a second radius (r2) of 50mm. The back focal length (BFL) is 10.97mm, and the thickness at the center is 14.7mm.
The aspheric shape of the lens is defined by its conic constant (k1) of -1.224683, with higher-order aspheric terms (k2, k3, etc.) set to 0. This design ensures superior image quality and reduces spherical aberration, common issues in traditional spherical lenses.
The lens is available from the reputable vendor, Edmund Optics, and is currently in stock. For more detailed information or to make a purchase, users can visit the provided weblink.
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