21-941 50mm Dia. UVFS Aspheric Lens; EFL=50mm; NA=0.48 UV-VIS 250-700nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 50 mm
- BFL
- 37 mm
- R1
- 23.81 mm
- R2
Material
- Name
- HPFS7980
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4760888871717037
- λ
- 355 nm
- B1
- 0.683740494
- C1
- 0.00460352869 μm2
- B2
- 0.420323613
- C2
- 0.0133968856 μm2
- B3
- 0.58502748
- C3
- 64.4932732 μm2
21-941 50mm Dia. UVFS Aspheric Lens; EFL=50mm; NA=0.48 UV-VIS 250-700nm
The 21-941 is a high-performance aspheric lens, designed and manufactured by Edmund Optics. This lens boasts a 50mm diameter and a numerical aperture (NA) of 0.48, making it ideal for a wide range of applications within the UV-VIS spectrum, specifically between 250 and 700nm.
The lens is crafted from HPFS7980 Corning, a high-quality fused silica material known for its excellent transmission properties and durability. This material ensures the lens can withstand rigorous use while maintaining its optical performance.
The lens geometry is meticulously designed, with an inner radius of 0mm, an outer radius of 0mm, and a thickness at the edge of 4.01mm. The effective focal length (EFL) is 50mm, and the back focal length (BFL) is 37mm. The lens's shape is asphere, with a conic constant of -0.773 and no other aspheric terms, providing superior optical performance over a wide field of view.
The lens is coated with the EDM UV-VIS STD curve on both the front and back surfaces. This coating enhances the lens's transmission properties, reduces surface reflections, and protects the lens from environmental factors, ensuring optimal performance and longevity.
