OPTICAL SYSTEM FOR FORMATION AND INDUCTION OF LASER RADIATION Russian patent published in 2018 - IPC G01S17/88 F41G3/22 

FIELD: space equipment.

SUBSTANCE: invention relates to the development of systems for the delivery of powerful radiation to air and space facilities and laser location weapon direction systems with high accuracy of the laser channel of energy transfer to the receiver-converter based on semiconductor photoelectric converters (FEC) in order to convert the electromagnetic energy of high-density laser radiation. Optical system for the formation and guidance of laser radiation includes the transmitting laser complex of n-laser modules, each of which contains the optical fiber terminal with the core, the core end of which is a source of radiation, which creates a single laser beam, light-dividing element, three-coordinate scanning element, which is made in the form of a movable lens, while at the output of the optical system the total laser beam of rays falls on the mirror, which is structurally connected with the device of “rough” guidance, and is reflected in the form of a small-divergent beam of rays, in this case, the n collimators, the adder of single laser beams and the three-coordinate scanning unit are introduced into it. Each laser module is equipped with the fiber optic terminal with the numerical aperture NA_i and with the core diameter d_i, from the end of the core of which the divergent laser beam enters the mentioned i-th collimator on the aspherical lens contained in it with the front and back focal distances f_a and f_a^* respectively. In this case, its main optical axis is perpendicular to the plane of the core end of the corresponding fiber optic output and passes through its center, which is placed in the front focus f_a of the mentioned aspherical lens. Mentioned dichroic plates, the planes of which are of the same configuration and are made with the characteristic dimension, are installed in parallel to each other so that through their geometric centers at the angle of 45° passes the main optical axis of the movable lens, which is perpendicular to the main optical axes of the aspherical lenses, while the movable lens is mounted on the micropositioner of the three-coordinate scanning unit and is made aspherical with the front and back focal distances f_c and f_c^* respectively, where the main optical axis of the movable lens passes through the focus F of the mirror, which is made parabolic, and through its geometric center, through which the optical axis of the parabolic mirror passes, this axis is parallel or coincident with the optical axis of its complete parabola, where the mentioned focus F coincides with the back focus f_c^* of the movable lens.

EFFECT: technical result of the invention is the compactness of the optical system that efficiently collects single laser beams of various sources with the fiber optic output and forms a low-divergent total beam of rays.

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