87-980 12.5mm Dia. UVFS Aspheric Lens; EFL=12.5mm; NA=0.5 UV 250-425nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 12.5 mm
- BFL
- 8.39 mm
- R1
- 5.73 mm
- R2
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
87-980 12.5mm Dia. UVFS Aspheric Lens; EFL=12.5mm; NA=0.5 UV 250-425nm
The 87-980 is a high-performance aspheric lens, boasting a 12.5mm diameter and a numerical aperture (NA) of 0.5. This lens is designed for use in the ultraviolet (UV) spectrum, specifically between 250 and 425 nanometers.
The lens is crafted from UV fused silica, a material known for its excellent transmittance in the UV range. This makes the 87-980 an ideal choice for applications that require high-quality imaging or light transmission in the UV spectrum.
The lens features an effective focal length (EFL) of 12.5mm, which is the distance from the lens's principal point to its focal point. This EFL, combined with the lens's NA, allows for a wide field of view and high light-gathering capability.
The 87-980's aspheric design is a significant advantage over traditional spherical lenses. Aspheric lenses reduce spherical aberration, a common issue in spherical lenses where light rays fail to converge at a single point, leading to distorted images. The 87-980's aspheric design ensures that light rays converge more accurately, resulting in sharper images.
The lens is coated with a UV coating, specifically designed for the 250-425nm range. This coating enhances the lens's transmittance in the UV spectrum, reducing losses due to reflection and scattering.
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