f280mm UV Lens UV7510
The description states that solar radiation at 200–280nm is completely absorbed by ozone while crossing the atmosphere; lower-atmosphere scattering and ground-level ozone also absorb it, creating a natural dark region near the ground with almost no naturally occurring solar-blind UV signals. UV systems require chromatic correction over their spectral range. Allocating optical power using material dispersion is important, but few UV materials and small dispersion differences make correction difficult. High SNR requires a large relative aperture. Correcting such systems calls for high-index materials, whereas UV-transmitting materials have indices below 1.46. More transmitting elements or thicker lenses are therefore needed, lowering transmission and partly offsetting the optical gain from the large aperture.
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Overview
Specifications
| Parameter | Value |
|---|---|
| EFL | 75 mm |
| Wavelength | 280 nm |
| F# | 10.0 |
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