67 results about "Optical telescope" patented technology

The invention discloses a non-cooperative target trajectory prediction method fusing camera miss distance and encoder information. According to the method, the actual track sequence of the non-cooperative target is obtained by fusing the miss distance of the camera of the optical telescope and the grating encoder information, the motion track of the tracking target in the blind area time is predicted by using a prediction algorithm, the telescope is controlled to move directly through optical feedback at the camera sampling moment, and the motion track of the tracking target in the blind area time is obtained at the encoder sampling moment. The corresponding predicted value and the encoder measurement value are subtracted to obtain the tracking error in the blind area time, and the tracking error is input into the telescope motion control system, so that the control frequency and closed-loop bandwidth of the telescope motion control system are improved, and the error between the reference trajectory and the actual trajectory of the tracking target is reduced; therefore, the tracking capability of the optical telescope on the non-cooperative target is improved.

The present invention discloses a continuously variable magnification prism telescope optical system, belonging to the technical field of optical telescope systems. The system comprises a first objective lens doublet, a third objective lens, a second objective lens doublet, a third objective lens doublet, a fourth objective lens doublet, a tenth objective lens, a first prism, a graticule, an eyepiece doublet, a fourth eyepiece lens, and a fifth eyepiece lens, arranged in sequence along a first optical path. Most of the objective lenses and eyepieces in the continuously variable magnification prism telescope optical system are doublets, which can effectively shorten the overall length of the optical system and reduce the number of lenses in the optical system, resulting in a smaller volume and weight of the entire optical system after assembly, while also achieving good image quality. The system achieves continuous changes in focal length and / or imaging magnification by moving the second objective lens doublet and / or the third objective lens doublet along the optical axis. The use of a variable magnification objective lens structure makes the eyepiece structure simple and highly reliable.

The invention provides an astronomical positioning navigation method based on optical observation, which comprises the following steps: screening and sorting observation targets to be observed according to initial conditions of a platform and ephemeris of the observation targets to serve as an observation task list; driving the optical telescope to steer and collect observation images according to the observation task list; matching astronomical images in the observation image with a fixed star catalogue so as to calculate observed celestial coordinates of each astronomical image; extracting a moving target as an observation target through star change of the multiple frames of observation images, and obtaining a motion track of the observation target; and carrying out platform position calculation. According to the astronomical positioning and navigation method disclosed by the invention, the attitude and position calculation of the platform is completed by integrating optical observation data of a fixed star and an observation target, and the autonomous navigation and positioning of the platform under the condition of no GNSS signal are realized.

The invention discloses a large-view-field compound eye telescopic system suitable for daytime observation, and belongs to the technical field of optical system design. The system comprises a primary mirror, a compound eye optical unit, a refraction correction mirror group unit and a photoelectric detector unit which are sequentially arranged along an optical axis. The compound eye optical unit adopts a light splitting reflection cube-corner prism structure, and divides a focal plane of a primary lens into X paths of sub-view fields; the refraction correction lens group unit comprises n correction lens groups with built-in field diaphragms; a concentric annular light barrier group is arranged on the inner wall of the primary mirror chamber. Large-view-field observation is realized through optical splicing of a compound eye structure, strong background stray light in the daytime is remarkably inhibited by utilizing a built-in view field diaphragm and combining multiple scattering absorption of a light barrier group, and the stray light coefficient of the system is lower than 1.11 * 10 <-7 >. The technical problem that an existing optical telescope cannot carry out high-contrast large-view-field observation in the daytime is solved, and all-weather monitoring of near-earth celestial bodies is achieved.

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.

A kind of telescope active optical correction system correction accuracy testing device, including laser interferometer, multidimensional adjusting table, wave aberration measurement component and plane mirror, laser interferometer is placed in the outside of optical telescope for emitting test light to the inside of optical telescope, to detect the wave aberration data of multiple fields of view;Multidimensional adjusting table is used to adjust the position, angle of optical element in optical telescope, to simulate the situation that telescope imaging quality drops;Wave aberration measurement component is set at the image plane of telescope for measuring the wave aberration after optical telescope imaging quality drops, and plane mirror is used to reflect test light.The present application relates to a kind of telescope active optical correction system correction accuracy testing method, the displacement amount and rotation angle of optical element when comparing when simulating image quality drop and when correcting judge the correction accuracy of active optical correction system, compare wave aberration before simulating image quality drop and after correction, judge whether the image quality after correction reaches the image quality before simulating image quality drop.

The invention discloses an optical telescope primary mirror assembly and an anti-backlash close-fitting method thereof. The primary mirror assembly comprises a telescope primary mirror, a primary mirror mounting seat, a central mandrel, a pressing ring and a plurality of copper sheets. The primary mirror mounting seat is coaxially connected with the central mandrel through a screw and a positioning pin; the primary mirror of the telescope is embedded in the primary mirror mounting seat, and the central spindle penetrates through the central through hole of the primary mirror to finish coarse positioning of the primary mirror in the primary mirror mounting seat. A plurality of equal-thickness copper sheets are inserted into a circular gap between the central mandrel and the central through hole of the primary mirror at equal intervals, so that accurate positioning of the primary mirror in the primary mirror mounting seat is completed while the gap is eliminated. And a ball fastener is screwed into the threaded through hole in the side wall of the central mandrel, and the head of the fastener abuts against the corresponding copper sheet to realize interference fit. According to the design method, the assembled primary mirror assembly can be completely stable, the stress in all directions is uniform, the extrusion stress can be well conducted after the gravity posture is changed, and the good surface precision of the primary mirror is maintained.

The application discloses a large dynamic range imaging device and method, relates to the technical field of remote sensing imaging, and the device is characterized in that a rotating scanning component moves to a corresponding position according to a rotating instruction, and sends received radiation into an optical telescope component, and then converges to a light splitting component; the light splitting component divides the radiation into visible light and infrared rays, and respectively sends the visible light and the infrared rays into a visible light component and an infrared component; the visible light component focuses received visible light and obtains visible light signal data through multi-channel faint light detection; the infrared component collimates, focuses and multi-channel infrared detects received infrared rays to obtain infrared radiation signal data; a controller amplifies and processes the visible light signal data and the infrared radiation signal data, and obtains a ground object target image through data fusion, then determines corresponding ground object target line-of-sight angle information based on the ground object target image, and then generates a rotating instruction and sends the rotating instruction to the rotating scanning component. The application can obtain a remote sensing image with rich and complete data information under low illumination.

There are provided: a light source to generate a laser beam; an optical modulator to superimpose a communication signal on the laser beam; an OHPA to amplify the laser beam; a collimator including a fiber connector and a collimator lens to convert the laser beam amplified into spatial light, and emit the spatial light; an optical telescope to enlarge a beam width of the spatial light and emit the spatial light to a spatial transmission path; a drive mechanism capable of adjusting a focal length of the collimator lens; and a drive controller to determine a drive amount of the drive mechanism in such a manner that a product of a free space loss calculated from a distance between the spatial optical communication transceiver and a spatial optical communication transceiver and a transmission gain determined by a beam spread angle of the spatial light is constant.

The invention discloses a maneuvering GEO satellite searching method based on optical orbit measurement data, which comprises the following steps: when an optical telescope does not observe a target satellite at an original running position during sky area patrol traversal, judging that the target satellite possibly has orbit maneuver, after a target is lost, carrying out initial orbit determination on unsuccessfully matched data searched by the optical telescope, and carrying out initial orbit determination on the data; suspected targets are screened based on orbit characteristics, combined orbit determination is performed on the screened data, after an initial orbit is determined, the optical telescope is continuously guided to search and accumulate data, and finally, the orbit of the maneuvering target satellite is determined. According to the method, the maneuvering target satellite (GEO satellite) can be quickly found in the optical telescope patrolling search data, the operation orbit of the maneuvering target satellite is mastered again, cataloguing management of the maneuvering target satellite is recovered, and the problem that the GEO satellite cannot be quickly found after large-amplitude orbit maneuvering is solved.

an LEO satellite includes a light projecting element that emits emission light to another LEO satellite, an optical telescope, an optical phased array, a light receiving element that receives incident light from the other LEO satellite, a distance measurement unit that measures a distance to the other LEO satellite based on at least one of the emission light and the incident light, and a control unit. The control unit captures the other LEO satellites by scanning emission light using the optical telescope and receives incident light from the other LEO satellites for the other LEO satellites on the same orbital plane, and captures the other LEO satellites by scanning emission light using the optical phased array and receives incident light from the other LEO satellites for the other LEO satellites on different orbital planes.

The utility model provides a laser telegraph telescope system with image acquisition and display functions, which comprises a laser telegraph assembly, an image acquisition and processing assembly, an industrial lens, an industrial lens focusing mechanism, an image acquisition unit and an image processing and output unit, and the image acquisition and processing assembly is arranged at the rear end of an eyepiece of the laser telegraph assembly. The industrial lens is coaxially arranged at the rear end of the laser electric eyepiece, the industrial lens focusing mechanism is arranged outside the industrial lens and used for adjusting the focal length of the industrial lens, the image acquisition unit is connected to the rear end of the industrial lens and used for acquiring image data output by the industrial lens, and the image processing and output unit is arranged at the rear end of the image acquisition unit and used for outputting the image data. The image processing unit is electrically connected with the image acquisition unit and is used for processing and outputting image data; and the image display unit is electrically connected with the output end of the image processing unit and is used for displaying the image data. According to the utility model, telescope image acquisition and processing are added on the basis of the original laser telegraph, and are displayed through the display, so that operators can observe conveniently.

The application discloses a three-dimensional geomagnetic space information measuring total station, which comprises physical sensors, magnetic flux gate sensors, optical telescopes and a host computer, wherein the physical sensors and the magnetic flux gate sensors are connected with the host computer, the physical sensors comprise magnetic sensor probes, horizontal angle sensors, vertical angle sensors and distance measuring sensors; the host computer is composed of a WINCE system, the magnetic flux gate sensors convert analog signals into digital signals through AD converters, the physical sensors, the magnetic flux gate sensors and a single-chip microcomputer in the host computer communicate through a 6-pin RS-232 interface, and the application can utilize multidisciplinary comprehensive magnetic force sensors and electronic angle measuring total stations to integrate, establish a data calculation relationship model of three-dimensional geomagnetic space magnetic declination, magnetic inclination, magnetic north azimuth and magnetic north direction angle and develop a geomagnetic space information one-station automatic measuring instrument, i.e., a total station, on the basis of a geomagnetic space information measuring principle, considering a geodetic survey geometric element measuring method and an environment.

The present application relates to the technical field of laser communication, in particular to a kind of interstellar laser communication failure guide adjustment remote control system, including optical telescope module, laser transmitter module, control module and fault diagnosis repair module, optical telescope module is connected with control module, laser transmitter module is connected with control module, fault diagnosis repair module is connected with control module;After interstellar communication handshaking fails, laser transmitter module emits N laser beams, optical telescope module receives laser beam and uploads to control module, fault diagnosis repair module automatically detects and diagnoses fault reason, and generates corresponding measures, measure instruction is uploaded to control module, control module is recontrolled and adjusted according to the received instruction to controlled object, the stability and reliability of interstellar laser communication are maximized to guarantee.

1. The name of the design product: the base of space optical telescope. 2. The use of the design product: the base of space optical telescope. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The invention discloses a Greenwood frequency measurement system and a method for using the same. The measurement system comprises an optical receiving system, an optical imaging system, an image acquisition and analysis system, a turntable and control system and an auxiliary system, wherein the optical receiving system comprises an apodization mirror and an optical telescope; the optical imaging system comprises a lens group and a filter; the image acquisition and analysis system mainly comprises a high frame rate CCD camera, an image acquisition card and a monitor; the turntable and control system comprises a servo system and a control system; the auxiliary system mainly comprises a guide telescope, an attenuation plate and a power supply; when the system is used, it can select the optimal target star by assigning different weights through real-time all-sky star catalog screening, considering information such as the magnitude value, spectral type and coordinate position of the star catalog; at the same time, the equipment selected by the system has a complete control interface, can realize the automation of Greenwood measurement, and has the characteristics of simple and convenient use, high measurement accuracy and high automation.

The present application relates to the field of optical telescope technology, and proposes a kind of spectroscopic popular science telescope, including frame body, field lens ocular lens, cemented ocular lens, display screen and ridge prism are connected from top to bottom on frame body respectively;Half house cemented prism is fixedly connected between one side of ridge prism and frame body, and the inside of frame body is connected with light splitting focusing module, and light splitting focusing module includes relay lens large lens, relay lens middle lens and relay lens small lens;Light splitting focusing module is composed of three relay lenses of relay lens large lens, relay lens middle lens and relay lens small lens, and light splitting focusing module is arranged on original observation light path, and original observation light path is divided into the following two ways: one way is observation light path, directly conducted to field lens ocular lens for user naked eye observation;Another way is imaging acquisition light path.Through the above technical scheme, the problem that the existing telescope exists prism observation and imaging light path coincides, sometimes there will be shielding interference, which will affect the user's judgment.

A torque actuator disclosed by the present invention comprises an elastic rod, a torque sensor and a motor, the torque sensor comprises a torque receiving end, a plurality of elastic blades and a torque output end, the elastic blades are provided with torque sensitive elements, and the elastic blades are arranged along the circumferential direction. The torque receiving end is connected with the motor through a coupler and transmits torque output by the motor to the elastic blades, the torque output end is connected with the elastic blades to transmit the torque to the elastic rod, and the elastic rod is connected with an object with torque to be adjusted. When a torque to-be-adjusted object is a sub-mirror of an astronomical optical telescope, the torque can be measured in real time and the surface shape of the mirror surface can be corrected while the torque is applied to the sub-mirror; the torque actuator is simple in structure, clear in principle, easy to manufacture and good in reliability and stability.

A weatherized optical observing system includes components that include an optical telescope, a gimbal, and an integrated controller. The optical telescope includes an imaging device configured to capture telescope images. The gimbal is configured to move the optical telescope in at least two axes. The integrated controller configured to wirelessly transmit the telescope images, wirelessly receive instructions, identify local weather data, actuate the gimbal based on the instructions, and control the optical telescope based on at least one of the instructions or the local weather data.

A device includes an entrance pupil configured to receive light from a distant source. The device also includes an exit pupil configured to output the light to at least one component of an imaging system. The device further includes a plurality of lenses disposed optically between the entrance pupil and the exit pupil, where the lenses are grouped into an objective group and an eyepiece group. In addition, the device includes a housing surrounding the lenses and formed of a housing material. The lenses are formed of one or more lens materials selected based on a thermo-optical coefficient of the one or more lens materials and a coefficient of thermal expansion (CTE) of the housing material. The lens materials can be selected to have a thermo-optical coefficient that is closest to the CTE of the housing material among thermo-optical coefficients of a plurality of possible lens materials.

The present invention relates to an optical telescope device (1), comprising: - a mirror (2) having a first concave reflective outer face (2a) and a first flat inner face (2b) opposite the first outer face (2a), the first outer face (2a) being polished; - a reinforcement structure (3) fixed to the mirror (2), the reinforcement structure (3) having a second flat inner face (3b) and a second free outer face (3a), the second inner face (3b) being in contact with the first inner face (2b) along a fixing plane; the second free outer face (3a) being concave, the mirror (2) and the reinforcement structure (3) being symmetrical with respect to the fixing plane. Figure for the abstract: Fig. 1

The invention provides an end-to-end turbulence suppression data set augmentation method based on a diffusion model, which is used for solving the problems of large calculation amount, long calculation time or insufficiency of generated phase screen high and low frequency information in the existing method for accurately representing space-time correlation of a turbulence degradation process. The technical problem that the visual effect is poor when the method is applied to a clear true-value image is solved. According to the end-to-end turbulence suppression data set augmentation method based on the diffusion model, a turbulence degradation image under a new turbulence degradation condition graph is directly generated from a clear image through the diffusion model, so that augmentation of an end-to-end turbulence suppression data set is realized; large-scale and high-quality image samples which are infinitely close to actual observation can be provided for a turbulence degraded image restoration algorithm based on data driving, simulation of complex atmospheric turbulence conditions is achieved, and then the observation capacity of a foundation large-aperture optical telescope is improved.

The invention discloses a method for improving daytime detection capability of a foundation photoelectric detection telescope. According to the method, by measuring a signal of a detection target, calculating a relation between a multi-frame accumulated signal-to-noise ratio and a single-frame accumulated signal-to-noise ratio of the detection target, and comprehensively considering measurement errors caused by atmospheric disturbance and servo tracking, a data model about detectability improvement quantity and a ratio of the multi-frame signal-to-noise ratio to the single-frame signal-to-noise ratio is established; therefore, the relation between the detectability improvement amount and the accumulated frame number is obtained. The invention provides a method for improving the daytime detection capability of a ground-based optical telescope based on multi-frame accumulation. The detection capability of the ground-based optical telescope on a dark space target in the daytime can be effectively improved.

The invention discloses a data transmission method and system of an optical telescope, and relates to the field of data transmission of optical telescopes. According to the data transmission method of the optical telescope, after observation of the optical telescope is finished, observation data of the optical telescope are obtained, data analysis is carried out, and an observation data set of the optical telescope before transmission is obtained; performing transmission processing on the observation data set of the optical telescope before transmission, and performing comprehensive analysis on the observation data set of the optical telescope before transmission and after transmission based on a CRC check code after transmission is finished to obtain a transmission data integrity index of the optical telescope; whether the transmission data integrity index of the optical telescope meets the preset data integrity index threshold value or not is judged, the transmission data integrity index of the optical telescope and the preset data integrity index threshold value are compared and analyzed, corresponding measures are taken, and therefore the reliability and integrity of data transmission are remarkably improved.

A binocular electro-optical telescope, relating to the technical field of optical devices, comprising a first lens barrel and a second lens barrel connected to each other, and a magnification adjustment assembly and a focusing structure located between the first lens barrel and the second lens barrel. An operating part of the magnification adjustment assembly and an operating part of the focusing structure are both at least partially exposed on a same side of the telescope for operation. The binocular electro-optical telescope provided in the present application improves the convenience of focusing and magnification adjustment operations by users, and enables a more rational overall layout of components.

A dual-light telescope capable of adjusting the screen display angle comprises a telescope body, an eyepiece is installed at the front end of the telescope body, a screen display support is connected to the tail of the telescope body, a screen display groove is formed in the surface of the screen display support, a screen display is arranged in the screen display groove, the upper end of the screen display is rotationally connected with the screen display support, an inner groove is machined in the surface of the screen display groove, and a supporting rod is rotationally arranged in the inner groove. A plurality of supporting grooves are formed in the back face of the screen display, and the supporting rods are inserted into the supporting grooves to adjust the angle of the screen display. Compared with the prior art, according to the dual-light telescope capable of adjusting the screen display angle, the screen display angle can be adjusted by inserting the supporting rod into the supporting groove, reflection of an external light source is reduced, and imaging is clearer.

This invention provides a design method for a flexible hinge supporting a large-aperture optical telescope. The method involves parametric processing of the flexible hinge structure in a CAD model, establishing a finite element model of the primary mirror and supporting structure assembled with the initial flexible hinge structure; setting multiple working conditions to obtain nodal displacement data; and acquiring the rigid body displacement and surface RMS values ​​of the primary mirror through numerical fitting. An automated workflow is established to iteratively generate a mathematical substitution model; based on the mathematical substitution model, target values ​​are iteratively calculated, and the output target values ​​are evaluated to select the optimal structural parameter target values ​​as the dimensional parameters of the flexible hinge structure. The design method proposed in this invention has the advantages of being faster and more accurate, significantly saving computation time and labor costs. Compared with traditional optimization methods that focus on deformation and stress, it has a more direct and mechanical advantage, more accurately and comprehensively reflecting the working state of the structure, thus obtaining better optimization results.

This device for determining coordinates of a low Earth orbit object is provided with: a narrow-field optical telescope (10) comprising a narrow-field image-forming optical system (11) that has a narrow viewing angle and high resolution, a narrow-field light selecting means (12) for selecting, from light concentrated by the narrow-field image-forming optical system (11), light coming from a low Earth orbit object, and a narrow-field image sensor (13) for outputting, as narrow-field image data, the light selected by the narrow-field light selecting means (12); a wide-field optical telescope (20) comprising a wide-field image-forming optical system (21) that has a wider viewing angle and lower resolution than those of the narrow-field image-forming optical system (11) and that is oriented in the same direction as an orientation direction of the narrow-field image-forming optical system (11), a wide-field light selecting means (12) for selecting, from light concentrated by the wide-field image-forming optical system (21), light coming from a star, and a wide-field image sensor (23) for outputting, as wide-field image data, the light selected by the wide-field light selecting means (22); and a low Earth orbit object position coordinate computation device (50) for identifying celestial sphere coordinates of the low Earth orbit object by using detected position coordinates of the low Earth orbit object detected from the narrow-field image data from the narrow-field image sensor (13) and detected position coordinates of the star detected from the wide-field image data from the wide-field image sensor (23).

The invention relates to a super-elastic and super-tough mechanical shutter blade compounded by carbon fibers and a polyimide film, and belongs to the technical field of mechanical shutters of large optical telescopes. A polyimide film material is pasted on single-layer carbon fiber cloth, or a polyimide film is clamped between two layers of carbon fiber cloth, so that a sandwich structure is formed. And the fiber direction of the carbon fiber cloth and the edge straight line of the blade are staggered at 45 degrees. A resin matrix, carbon fiber cloth and a polyimide film are consolidated in a high-temperature hot pressing forming mode, and the shutter blade front end with super-strong elasticity is manufactured. Due to the addition of the polyimide film material, the carbon fiber cloth at the front end of the carbon fiber mechanical blade has the characteristic of tear resistance and is more tough, and the front end of the blade with a large-size plane of 620 mm * 50 mm is still not broken or damaged under the super-strong elasticity of being bent by nearly 90 degrees.