The hybrid TV instrument for the UV range uses Cs2Te sun-blind photocathode. The low sensitivity of this photocathode at wavelengths longer than 300 nm reduces the need for strong suppression of visible and IR radiation using optical filters.
There are no fibre optic elements that reduce the radiation resistance of the device. The device is not afraid of light loads in the visible and IR range, is resistant to electromagnetic fields and thermal shocks.
Focusing - proximity.
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