OPTICAL FACILITY ÞÑ-77
This is intended for assembly, alignment and measurement of optical characteristics of large long-focus lenses and catadioptric optical systems in the visible and IR spectral ranges. A test bed based on the optical facility allows one to make the energy calibration and to measure the output characteristics of optoelectronic devices with an entrance pupil diameter of up to 1000 mm when simulating real background conditions.
|Operating spectral range||visible and IR|
|Focal length of collimator, m||15 and 25|
|Clear aperture of collimator, mm||985 è 1850|
|Inside diameter of a landing ring for device-holder, mm||2000|
|Simulation of real background conditions in spectral range, µm||0.5...3.5|
This is intended to align and measure optical characteristics of optical and mechano-optical systems up to 600 mm in diameter.
The facility includes: collimator with a focal unit, a device-holder, a set of measuring devices.
|Focal length, mm||7010|
|Clear aperture, mm||710|
|Diameter of central screening, mm||170 at the most|
|Angular size of point objects for a collimator, microrad||1.5 to 435|
|FOV of collimator, microrad||±1500|
Photometric facility ÔØ2Ì
This is intended for measurement of the light scattering coefficient of optical systems with optical diameter up to 500 mm in the IR spectral range in accordance with State Standard 24724-81.
|Spectral range, µm||0.4...3.5|
|Inside diameter of integrating sphere, mm||2000|
|Reflection factor of the integrating sphere inner surface, %||75|
|Clear aperture of the collimator lens, mm||550|
|Focal distance of collimator lens, mm||2000|
|Luminance relation between black object and inner surface of integrating sphere, per unit||7·10-4|
|Diameters of inner surfaces of the integrating sphere ring insertion, mm||25...110|