9 results about "Reflecting telescope" patented technology

This invention provides a limiting system and method for a 60cm aperture fork-type equatorial mount Cassegrain reflecting telescope, relating to the field of astronomical telescope technology. It can cut off power to the turntable when the telescope, terminal instruments, and fork-type turntable collide, thereby protecting the integrity of the telescope, terminal instruments, and fork-type turntable. The system is simple in structure, allows for non-destructive assembly, and offers high reliability and accuracy. The limiting system includes: a limiting device, a telescope, a relay, a power supply, and a fork-type turntable assembled with the telescope. The fork-type turntable is connected to the power supply via the relay. The limiting device is mounted on the fork-type turntable and electrically connected to the relay, controlling the relay's on / off state through the trigger state of the limiting device. The limiting device includes a limiting plate and a base plate, which are connected. The base plate is fixedly connected to the fork-type turntable. The limiting plate is equipped with a compression trigger element, which is electrically connected to the relay. The position of the limiting plate on the fork-type turntable coincides with the contact position between the telescope and the fork-type turntable.

A spectroscopy system including a base station having a reflecting telescope and a laser light source coupled to the telescope, the laser providing an outgoing light signal; at least one Unmanned Aerial Vehicle containing a mobile retroreflector configured to receive the light signal from the laser and return a light signal back to the telescope; a detector to record the intensity of the returning light signal; and optical components for spectroscopic measurements, the optical components utilizing the intensity of the returning light signal, revealing the presence of a chosen narrow band for the purpose of detecting a target.

This invention provides an optical system and method for free-space quantum key distribution. The optical telescope employs a transmission-type telescope and a simplified rear optical path terminal, effectively avoiding secondary mirror obstruction and vignetting. The optical telescope system has a smaller axial dimension and is lighter than a Cassette-type reflecting telescope of the same aperture, making it more suitable for large-scale use in short-range free-space quantum communication. It can be carried and deployed by a single person and has all-day quantum key distribution capabilities. Furthermore, the transmitting and receiving telescopes are interchangeable, meaning the system can function as both a transmitter and a receiver, extending quantum communication coverage to areas inaccessible by fiber optics and satellites, and enabling rapid deployment in various emergency and unforeseen circumstances.

This invention relates to a high-power, high-repetition-rate terahertz source generating device at room temperature with a capacity of hundreds of milliwatts, belonging to the field of nonlinear optical frequency conversion technology. It solves the problems of low terahertz conversion efficiency and the need for additional cooling equipment in existing technologies. The device comprises, arranged sequentially along the optical path: a pump laser for providing femtosecond pump laser light; a beam-expanding lens group for expanding the femtosecond pump laser beam to twice its original diameter; a plane mirror group for guiding the expanded pump laser; a first half-wave plate, a reflective diffraction grating, a gold mirror, and a third ultrafast mirror for adjusting polarization and diffraction reflection; a 4-f telescope imaging lens group for reducing the diameter of the received pump laser beam and imaging it onto a lithium niobate crystal; a lithium niobate crystal for generating terahertz pulse radiation perpendicular to the wavefront; a terahertz collection module for receiving and focusing the terahertz pulse radiation; and a measurement device for receiving and measuring the focused terahertz pulse radiation.

The application discloses a long-base optical interference system and an optical path collimation method, and comprises an interference terminal and two optical path devices; the optical path device comprises a parallel light tube, a reflecting telescope and a guide star system; parallel light generated by the parallel light tube enters the guide star system after the reflecting telescope; the guide star system comprises a light splitting prism, a first mirror, a first lens, a second mirror and a guide star camera; the parallel light entering the guide star system is split into transmitted light and reflected light by the light splitting prism, wherein the reflected light sequentially passes through a folded axis structure composed of the first mirror, the first lens and the second mirror, and enters the guide star camera; the transmitted light split by the light splitting prism of the guide star system of the two optical path devices is respectively a first light beam and a second light beam; the interference terminal focuses the first light beam and the second light beam after beam combination, and then the first light beam and the second light beam propagate to the interference terminal camera. The system can be applied to outdoor observation, and the method is used for optical path collimation of the long-base optical interference system, so that stable optical interference fringes are obtained.

The invention discloses an inter-satellite laser communication terminal, and relates to the technical field of laser communication, the inter-satellite laser communication terminal comprises a laser communication assembly, the front surface of the laser communication assembly is detachably provided with a lifting assembly, the top of the lifting assembly is in transmission connection with a fixing assembly in the vertical direction, and the fixing assembly is internally provided with an opening and closing assembly. A locking assembly is fixedly arranged at the top of the fixing assembly; the laser communication assembly comprises a square locking ring fixedly arranged at the top of the front surface of the rotating bracket and the bottom of the front surface of the reflecting telescope; the lifting assembly comprises an L-shaped mounting plate detachably arranged on the front face of the base. According to the invention, the locking operation of the rotating bracket and the reflecting telescope can be completed only by using a single driving piece, and meanwhile, the piezoelectric ceramics are used for locking, so that the structure is simple, and the device can be lighter and lower in cost.

The utility model discloses a laser radar based on a coaxial receiving and transmitting light path, and aims to solve the problem of poor distance measurement precision of the existing laser radar. The device comprises a Newton type reflecting telescope, a coaxial receiving and emitting light path and a hardware correlator, a first reflecting mirror, a shaping beam expander and a pulse laser are sequentially arranged on one side of a lens cone in the axial direction, and a second reflecting mirror, an optical fiber coupler, a fast light intensity modulator and a photon detector are sequentially arranged on the other side of the lens cone in the axial direction; based on the Newton type reflection telescope and the fast light intensity modulator and through cooperation of the duplex auxiliary mirror, the first reflector and the second reflector, the distance measurement device has the advantages of being high in distance measurement precision, high in spatial resolution, insensitive to stray light, simple in data processing and the like, and powerful support is provided for related research of weather detection and distance detection; a coaxial design is adopted, and the transmitting unit and the receiving unit are integrated together, so that an overlapping factor can be improved to the maximum, and a higher light beam utilization rate and higher detection efficiency are achieved.

The utility model discloses a device for synchronously fixing and locking the side surface of a primary mirror of a reflecting telescope. The device comprises a primary mirror holding claw, a synchronous locking ring, a locking screw, a locking device bottom plate, a locking device fixing screw and a primary mirror bottom plate, according to the device, rotation of the synchronous locking ring is converted into axial thrust on the side edge of the primary mirror, the primary mirror holding claw is pushed to gradually press the primary mirror, the contact face and pressure of the primary mirror holding claw and the primary mirror holding claw are increased at the same time, and it is ensured that the side edge of the primary mirror is pressed and fixed in a face contact mode while the primary mirror is pushed to the center of an optical axis. Compared with a traditional primary mirror side face locking mode, the problems of primary mirror eccentricity, complex installation and debugging and the like caused by stress concentration and asynchronous multi-point adjustment of a traditional device are solved.

The present invention provides a reflecting telescope to be mounted on a small satellite that is less susceptible to temperature changes in space and can perform as a specified reflecting telescope, and a method for manufacturing the same. [Solution] The problem is solved by a reflecting telescope 10 mounted on a small satellite, the reflecting telescope 10 being a Cassegrain type reflecting telescope in which a primary mirror section 11 and a secondary mirror section 12 are assembled and fixed within a housing 31, and the diameter of the reflective surface of the secondary mirror section 12 is smaller than the diameter of the primary mirror section 11, and the problem is solved by a reflecting telescope and its manufacturing method in which the housing 31, primary mirror section 11 and secondary mirror section 12 are formed from aluminum or an aluminum alloy.