33-953 25mm Dia. UVFS Aspheric Lens; EFL=17.5mm; NA=0.69 UV 250-425nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 17.5 mm
- BFL
- 8.37 mm
- R1
- 8.92 mm
- R2
- 38.18 mm
Material
- Name
- HPFS7980
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4584656081538023
- λ
- 587.6 nm
- B1
- 0.683740494
- C1
- 0.00460352869 μm2
- B2
- 0.420323613
- C2
- 0.0133968856 μm2
- B3
- 0.58502748
- C3
- 64.4932732 μm2
33-953 25mm Dia. UVFS Aspheric Lens; EFL=17.5mm; NA=0.69 UV 250-425nm
This is a high-quality aspheric lens from Edmund Optics, catalog number 33-953. It is designed for use in the ultraviolet range, specifically for wavelengths between 250 and 425nm. The lens is made from UV fused silica, a material known for its excellent transparency in the UV range.
The lens has a diameter of 25mm and a numerical aperture (NA) of 0.69, indicating a wide acceptance angle and high light-gathering capability. The effective focal length (EFL) is 17.5mm, suggesting a relatively compact optical system. The lens is coated with a UV coating (250-425nm) on both the front and back surfaces to enhance its transmission in the UV range.
The lens geometry is also noteworthy. It has a center thickness of 14.8mm and an edge thickness of 2.85mm, providing mechanical robustness. The aspheric design, with radii of curvature of 8.92mm and 38.177mm, helps to minimize spherical aberration, leading to improved image quality. The lens also has a back focal length (BFL) of 8.37mm, which may be important for certain optical system configurations.
