DEVICE FOR MONITORING A RANGEFINDING LASER Russian patent published in 2018 - IPC G01M11/02 G01C3/02 

FIELD: instrument engineering.

SUBSTANCE: invention relates to optical instrument engineering and can be used in multi-channel devices designed for monitoring sighting observational systems. A device for monitoring a rangefinding laser, comprising input and output optical systems, interconnected with a fiber-optic delay line made in the form of an optical fiber, the input and output ends of which are located in the focal planes of the input and output optical systems respectively, wherein the input collating and output collimating optical systems are formed by one optical system facing the concave surface to the end of the optical fiber, the optical element is formed with a concave reflecting working surface in the focal plane of which a first end of the optical fiber is located, which is both the input and output of the fiber optic delay line, wherein a second end of the optical fiber is connected to the reflector assembly of the optical signal. In addition, an antireflective and / or protective coating can be applied to the concave working surface of the optical element, the non-working surfaces of the optical element can be made matted, and in turn the coating of the optical element can be performed with an absorption index of a layer 1 mm thick from 0.04 to 2 for radiation with a working wavelength of a controlled rangefinding laser. In addition, the optical signal reflector assembly may be in the form of a fiber optic splitter, the common branch of which is optically coupled to the second end of the optical fiber forming a delay line, the branches are connected by an optical attenuator, and the optical attenuator can be made adjustable by the attenuation coefficient of the radiation of the controlled rangefinding laser.

EFFECT: technical result is the compactness of the rangefinding laser control device and its non-settability under temperature and vibration effects.

6 cl, 1 dwg