Camera lens for a satellite laser ranging for visual targetting optical range

In the article the authors present the result of calculating of combined optical system for a satellite laser ranging station. The calculated system includes extender of laser rays and lens of control-camera in optical band. The extender of laser rays is a catadioptric system over 320 millimeters and has sevenfold increase for the lengths of waves from 400 to 2000 nm without refocusing. In reverse the motion of rays the extender of laser of bunch is used as a part of camera lens in optical band. Equivalent focal length of a lens is 1753 mm. The authors presented two options of a lens of camera: lens containing usual optical glass and lens containing optical glass with special dispersion path: special crown (OK4) and special flint (OF1). The calculated systems can be used for a location of satellites by two laser lengths of waves. This method allows to define distance from satellite to us more precisely. In the article the analysis of the RMS spot diameter and radial energy distribution of spot has been shown. In our optical system we use Coude focus, therefore all equipment is separated from rotator. All surfaces of lenses in system are spherical. We take radiuses of surfaces from GOST 1807-75 of the Russian Federation. Due to the chosen radiuses and glasses from catalogue of the LZOS the cost of production will become less.