168 results about "Secondary mirror" patented technology

The invention discloses a primary and secondary mirror combined detection system and method for a beam shrinking system, and belongs to the technical field of optical detection.The method comprises the steps that a first micro-spherical mirror and a second micro-spherical mirror are arranged, reflection light spots are captured through an interferometer, the position offset is calculated, and a first control instruction for adjusting the pose of a secondary mirror is generated; a dual-band light source is integrated in a detection light path, wavefront data and alignment monitoring data are collected, and temperature drift is corrected to obtain effective combined wavefront; an error separation model is constructed based on the primary mirror compensator parameter and the Zernike aberration coefficient, and a primary mirror surface shape error component and a secondary mirror offset error component are decoupled and separated by using a preset aberration coupling coefficient; feeding the error component back to a polishing process and a displacement table for closed-loop iterative correction until the RMS value and the PV value of the effective combined wavefront meet a preset imaging quality index; through precise positioning, error correction and decoupling separation, the precision and efficiency of primary and secondary mirror combination detection are improved, and targeted correction is realized.

The invention relates to a three-waveband off-axis reflective optical system with view field switching and focusing functions. Belongs to the photoelectric technical field. Multi-band common-caliber imaging is realized by adopting an off-axis two-reflection-path form, imaging information can be continuously obtained day and night all day, laser emitting and receiving capabilities are considered, and the device has functions of positioning aiming, laser guiding and the like. Large and small field-of-view switching imaging is realized through switching-in and switching-out of the secondary mirror, and the system has the capability of carrying out rapid search in a large field-of-view range and carrying out accurate identification and tracking in a small field-of-view range; the auto-collimation focusing of the optical system is realized by switching the position of the focusing mirror and arranging the focusing system, the system is ensured to be clear in imaging under the use conditions of different atmospheric pressures, temperature changes and photographing distances, and the system is suitable for accurate aiming and detection of a target under various complex and severe working conditions. The total reflection optical system is free of chromatic aberration, free of blocking, compact in structure and high in system integration degree, and the requirement for functional diversification of a photoelectric system is met.

The invention discloses an infrared four-waveband composite annular aperture folded imaging optical system, belongs to the technical field of optical catadioptric optical paths, and aims to solve the problem that 1550nm / 1064nm dual-laser and medium-wave / long-wave infrared four-waveband composite detection is difficult to realize at the same time in the conventional annular aperture imaging technology. The system comprises a primary mirror, a secondary mirror, a 1064nm laser spot correction mirror, a 1550nm laser spot correction mirror, a 1064nm laser spectroscope, a 1550nm laser spectroscope, a broadband infrared detector, a 1550nm laser detector and a 1064nm laser detector. And high-performance common-aperture composite detection of 1064nm / 1550nm dual laser and medium-wave / long-wave infrared four wavebands is realized through a multi-stage light splitting mechanism. The limitation that a traditional annular aperture system is single in wave band is broken through, and the all-weather sensing and target recognition capability of the system in a complex environment is remarkably improved.

The invention relates to a packaging structure of a micro display chip and a display device, and the packaging structure comprises a substrate, the surface of which comprises a display area and a non-display area; the electrode pads are located in the non-display area; and a plurality of through hole plugs located in the substrate, wherein one end of each through hole plug is electrically connected with the electrode pad. In AR near-to-eye display application, the light absorption structure can effectively absorb stray light returned from components such as an optical waveguide and the like, secondary specular reflection of the metal electrode pad on the non-display area is avoided, ghosting is prevented from being formed, and the imaging contrast ratio and the picture purity are remarkably improved. The light absorption structure is integrated in the packaging structure, and a stray light feedback path is cut off through a physical means on the premise that normal light emitting of a display area and electrical connection of an electrode pad are not affected, so that the optical performance of the micro-projection ray machine is improved, the final display effect is guaranteed, and the display effect is improved. Therefore, the technical problem of image quality degradation caused by high reflectivity of the non-display area is effectively solved.

A design method of an off-axis three-mirror free-form surface imaging system comprises the following steps: according to design values of performance parameters and structure parameters of an optical system, establishing an optical system initial structure consisting of a primary reflector, a secondary reflector and a third reflector as an initial state of iterative calculation of the optical system initial structure; the radiuses, the eccentricity and the inclination of the primary mirror, the secondary mirror and the third mirror are updated in sequence; the initial structure of the optical system meeting the threshold requirement is obtained by judging the evaluation function value MF of the initial structure of the optical system; and by taking the minimum wavefront difference of the optical system as an optimization target, optimizing the obtained initial structure of the optical system by using a damping least square method, and outputting a design result of the optimized optical system. According to the method, the process of repeated iteration adjustment according to the actual engineering space requirement in the conventional design method can be reduced, and the free-form surface off-axis three-mirror optical system meeting the actual engineering space requirement can be conveniently obtained.

To provide a compact, high-performance catadioptric optical system. [Solution] The optical system comprises, in order of light passage from the object side, a primary mirror section consisting of an aspherical concave mirror with its concave surface facing the object side, a secondary mirror section arranged on the object side of the primary mirror section and consisting of an aspherical convex mirror with its convex surface facing the image side, and a refractive system arranged on the image side of the secondary mirror section, the refractive system comprising a front group with positive refractive power and a rear group with negative refractive power separated by a maximum air gap, the refractive system comprising at least five lenses, where PG is the Petzval sum of the refractive system obtained by normalizing the focal length of each surface by the focal length of the entire system, and PM is the Petzval sum of the reflective system obtained by normalizing the focal length of each surface by the focal length of the entire system, 0.6<|PG / PM|<1.2…(1) If the refractive power of the refractive system is φG and the refractive power of the entire system is φ0, then 0.05<|φG / φ0|<1.5…(2) 7 <PM<20…(3) It is characterized by satisfying the conditions (1), (2), and (3).

The invention provides a hyperspectral imaging system. The hyperspectral imaging system comprises a telescope group, a collimator objective, a prism, a volume holographic diffraction grating, an imaging objective and an imaging sensor which are arranged in sequence, the telescope group is composed of a primary reflector, a secondary reflector, a third reflector, a plane reflector and an entrance slit; the primary reflector, the secondary reflector and the third reflector form an off-axis three-reflector structure; the plane reflector is used for folding a light path; the collimating objective lens, the prism, the volume holographic diffraction grating, the imaging objective lens and the imaging sensor form an imaging spectrometer, and an entrance slit is used as object space input; the formed off-axis three-mirror and folded light path and an imaging spectrometer are in coaxial butt joint by taking an entrance slit as a node, and are used for joint correction and splicing to form a hyperspectral imaging system. According to the optical path architecture, optimal matching of the unobstructed total reflection front end and the transmission type rear end is realized, and the detection sensitivity of crop weak spectrum signals is greatly improved while a better modulation transfer function of a full view field is ensured.

The invention relates to the technical field of reflective optics, in particular to an off-axis three-mirror optical system with double folding mirrors, which comprises a primary mirror adopting a concave reflecting mirror and a secondary mirror adopting a convex reflecting mirror, an intermediate image is formed on an output light path of the secondary mirror, and a first folding mirror is arranged at the position of the intermediate image; the first folding mirror folds the light beam from one side of the incident light beam of the primary mirror to the other side, so that the third mirror receives the light beam; the third mirror of the concave reflecting mirror is matched with the primary mirror and the secondary mirror to correct aberration, and a final imaging light beam is generated; a second folding mirror located on an output light path of the third mirror reflects the light beam again, so that the focal plane is close to and higher than the primary mirror; the focal plane is located in an envelope space of the primary mirror and the third mirror; the diaphragm is arranged in an off-axis mode, and the off-axis amount of the diaphragm is 0.3-0.6 times of the diameter of the aperture. According to the invention, the compactness of the off-axis three-mirror optical system is improved through double-folding front and back split arrangement; through focal plane position optimization, the optimized focal plane is higher than the primary mirror.

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.

The invention discloses a high-precision control method for optical parameters of an off-axis spliced sub-lens of a primary lens of a large astronomical telescope, and belongs to the field of advanced optical manufacturing and detection. According to the method, precise adjustment of a detection light path is achieved through different diffraction function areas of computer generated holography (CGH), and high-precision control over the curvature radius and the off-axis amount of an off-axis sub-mirror is achieved by combining distance measurement of a laser tracker and angle measurement of a theodolite. The method specifically comprises three stages of inspection light path coarse adjustment, fine adjustment and light path parameter measurement and processing, optical element space attitude adjustment is guided through a diffraction reference point of the CGH, and finally off-axis sub-mirror surface shape and optical parameter information are obtained. According to the invention, the problem of installation and adjustment precision in the detection of the large off-axis aspheric reflector can be effectively solved, and reliable technical support is provided for the manufacturing of the primary mirror and the spliced secondary mirror of the astronomical telescope.

The invention relates to an ultra-large field-of-view dual-waveband aperture multiplexing type optical remote sensing camera, and belongs to the technical field of optical remote sensing. The optical remote sensing camera comprises a visible light optical system and an infrared optical system which share a primary mirror and a secondary mirror. The visible light optical system comprises a primary mirror, a secondary mirror, a visible light third mirror, a reflex mirror and a visible light focal plane in the light path direction; the infrared optical system comprises a primary mirror, a secondary mirror, an infrared third mirror and an infrared focal plane in the light path direction. According to the ultra-large field-of-view dual-waveband aperture multiplexing type optical remote sensing camera, all-weather ground investigation and surveying and mapping can be realized; primary mirrors and secondary mirrors of the visible light optical system and the infrared light optical system can be reused, the focal lengths of the two systems are different, the view fields of the visible light optical system and the infrared light optical system can be 20 degrees or above, and the ultrahigh energy utilization rate of the system is guaranteed through the total reflection mode. The camera is especially suitable for being used as a high-resolution camera of a wide-area detection, small-size and multi-spectrum integrated micro-nano satellite.

The invention discloses a high-performance ultraviolet visible light hyperspectral imaging system and an adjustment method thereof, and belongs to the technical field of spectral imaging, in the system, a front mirror assembly comprises a front primary mirror assembly, a front secondary mirror assembly, a front three-mirror assembly and a folding-axis mirror assembly; light enters through the incidence assembly, is reflected by the primary mirror assembly, the front secondary mirror assembly, the front three-mirror assembly and the folding-axis mirror assembly in sequence, enters the optical slit, and then enters the grating through the optical filter, the prism, the first rear mirror, the second rear mirror and the third rear mirror in sequence. And after being dispersed and reflected by the grating, the light sequentially passes through the rear mirror 3, the rear mirror 2 and the rear mirror 1, enters the prism, and reaches an imaging image surface after being reflected by the prism. According to the invention, high-reflectivity detection of an ultraviolet band can be realized, high-resolution detection of an ultraviolet visible spectrum of 280-1000 nm can be realized, and the highest spectral resolution of 0.5 nm can be realized; the imaging quality is close to the diffraction limit, plug and play is achieved, and the light and small layout has engineering applicability.

An optical assembly includes a primary mirror, a secondary mirror, and an optical steering system configured to support and position the primary mirror and the secondary mirror. The optical steering system includes a base and a yoke rotatably coupled to the base. The yoke is configured to support the primary mirror to rotate the primary mirror about a first axis and to support a secondary mirror to rotate the secondary mirror about a second axis. The yoke further is configured to rotate the primary and secondary mirror about a third axis. The secondary mirror is configured to move from a stowed position in which the optical assembly is positioned to receive an image from a field of view to a deployed position in which the optical assembly is positioned to receive an image from a field of regard.

This invention belongs to the field of target detection technology, and particularly relates to a miniaturized three-mode composite detection optical system. Target light rays are transmitted through a radome and then incident on a primary mirror. The primary mirror reflects the target light rays onto a secondary mirror. A dichroic film is coated on the surface of the secondary mirror closest to the primary mirror, separating the target light rays into laser and infrared rays. The laser light rays sequentially pass through the optical surface of the secondary mirror closest to the radome, a first lens, a second lens, and a filter to reach the photosensitive surface of a laser four-quadrant detector. The infrared light rays sequentially pass through a first infrared lens, a second infrared lens, and a third infrared lens to reach an infrared detector. Millimeter-wave signals emitted by a millimeter-wave waveguide slotted array radar are radiated to the target sequentially through the primary mirror and the radome. The echo signals reflected by the target are transmitted through the radome and the primary mirror sequentially before reaching the millimeter-wave waveguide slotted array radar. This invention can reduce the system length and volume, and expand the rotation angle of the servo frame within a limited space.

The invention discloses a primary and secondary mirror support machining device and a primary and secondary mirror support machining method, and the primary and secondary mirror support machining device comprises a bottom plate, a supporting cylinder, a plurality of arc-shaped fixing seats, a sensor mounting seat and a display device. On one hand, the outer side surface of the arc-shaped elastic sheet is fixedly connected with the metal induction block, and the metal induction block fills a pit formed by the outer side surface of the arc-shaped elastic sheet and the radial through hole, so that when the inner side surface of the arc-shaped elastic sheet is machined by a cutter, a second bolt on the sensor mounting seat can apply an abutting force to the metal induction block; the arc-shaped elastic piece can be prevented from being elastically bent and deformed in the radial direction under the acting force of a cutter, and therefore the inner side face of the arc-shaped elastic piece can be precisely subjected to finish machining. And on the other hand, in the finish machining process of the arc-shaped elastic piece, an operator can adjust machining parameters in real time according to the machining deformation amount of the arc-shaped elastic piece, and therefore the machining deformation of the arc-shaped elastic piece is within a proper range.

The invention discloses a remote high-depth-of-field LIBS self-focusing detection device for a lunar soil environment, and the device comprises a variable-curvature primary mirror which is provided with a central light through hole, and one side of the variable-curvature primary mirror is sequentially provided with a beam expanding assembly, a low-pass dichroscope, a focusing system, and a spectrometer; the multi-secondary-mirror zooming structure is arranged on the other side of the curvature-variable primary mirror; wherein the low-pass dichroscope corresponds to the transmitting end of the pulse laser; the variable-curvature primary mirror comprises a plurality of reflectors which are sequentially stacked from left to right, wherein the curvatures of the reflectors are sequentially increased. The multi-mirror zoom structure comprises a guide rail capable of rotating and axially moving; and the plurality of secondary mirrors with different curvature radiuses are sequentially arranged on the guide rail through the electronic clutch, and the secondary mirrors can diverge and reflect the light beams. According to the invention, the super-large depth of field with the axial depth of 1.5 cm is constructed by using the variable-curvature primary mirror, and the large-range coverage of the full life cycle area of the expanded plasma is realized.

The invention discloses a high-stability damping vibration attenuation secondary mirror three-period minimum curved surface dot matrix supporting structure which comprises a secondary mirror supporting frame, three-period minimum curved surface dot matrix supporting arms and a supporting seat. A microcrystal secondary mirror is arranged in the secondary mirror supporting frame; one ends of n groups of three-period minimal curved surface dot matrix supporting arms are fixedly connected to the outer side of the secondary mirror supporting frame, the other ends are mounted on the lens barrel platform through supporting seats, and n is greater than or equal to 3; each group of three-period minimal curved surface dot matrix supporting arms are tangentially arranged along the circumference of the secondary mirror supporting frame, and the connection positions of the n groups of three-period minimal curved surface dot matrix supporting arms and the secondary mirror supporting frame are uniformly distributed along the circumference of the secondary mirror supporting frame; the three-period minimal curved surface dot matrix supporting arm is of an array structure composed of Gyandroid basic units. The structure provided by the invention can be widely applied to a high-resolution space camera secondary mirror with ultra-light weight, high surface shape precision and high stability requirements and a support thereof, and has a wide application prospect.

The invention relates to a secondary mirror, in particular to a secondary mirror with a high-stability supporting structure. The technical problem that an existing secondary mirror supporting structure is difficult to achieve ideal balance among multiple targets such as high rigidity, low thermal deformation, minimum blocking and light weight is mainly solved. The secondary mirror comprises a secondary mirror supporting shaft, a secondary mirror body, a secondary mirror supporting plate, a secondary mirror supporting frame and a secondary mirror light shield. The secondary mirror body is firstly adhered and fixed on the secondary mirror supporting shaft through adhesive glue, then fixed on the secondary mirror supporting plate through the secondary mirror supporting shaft, fastened by the secondary mirror pressing ring and then fixed on the secondary mirror supporting frame through the secondary mirror supporting plate; and the secondary mirror light shield and the thermal control baffle plate are fixed on the secondary mirror support frame. The secondary mirror provided by the invention has good mechanical and thermal stability and stray light inhibition capability, and can realize ideal balance among multiple targets such as high rigidity, low thermal deformation, minimum blocking and light weight.

The invention relates to a three-mirror anastigmat telescope, comprising at least a primary mirror (1), a secondary mirror (2) positioned in front of the primary mirror (1) such that the primary and secondary mirrors have optical surfaces (1.1, 2.1) opposite one another, a tertiary mirror (3) having an optical surface (3.1) opposite the optical surface (2.1) of the secondary mirror (2), and a first optronic sensor (10) positioned opposite the tertiary mirror (3). The telescope comprises a second optronic sensor (20) positioned behind the secondary mirror (2) and the optical surface of the secondary mirror (2.1) has a dichroic treatment (2') intended to separate an incident luminous flux reflected by the primary mirror (1) into a first luminous flux reflected towards the first optronic sensor (10) via the tertiary mirror (3) and a second luminous flux transmitted to the second optronic sensor (20), the first luminous flux and the second luminous flux being in different spectral bands and the secondary mirror (2) being transparent to the spectral band of the second luminous flux.

This invention relates to the field of optical imaging technology, specifically providing an optical radar co-aperture off-axis imaging system, comprising: an off-axis mirror assembly, a frequency-splitting device, a radar transceiver system, and an optical imaging system. The frequency-splitting device is disposed in the rear optical path of the secondary mirror and is used to reflect light waves and transmit microwaves. The frequency-splitting device includes a frequency-selective surface, which comprises an FSS pattern layer and a bias line layer. The FSS pattern layer includes periodically arranged FSS units. Nonlinear capacitors are electrically connected to the FSS units. The bias line layer applies a voltage to the nonlinear capacitors according to the received microwave band. By changing the voltage applied to the nonlinear capacitors, the resonant frequency of the FSS units is tuned, thereby changing the microwave passband frequency of the frequency-splitting device. This invention not only achieves a reflective wave-transmitting microwave design but also solves the problem that transmitting only a single band of microwaves in microwave-transmitting and light-reflecting methods is difficult to adapt to different task requirements.

The invention discloses an aviation surveying and mapping lens optical system and a lens, particularly discloses a long-focal-length passive athermalization aviation surveying and mapping lens optical system and a lens, and solves the problems that an existing aviation surveying and mapping lens cannot meet the requirements of long-distance and high-precision surveying and mapping and cannot have long focal length, miniaturization and wide temperature adaptability at the same time. The lens optical system comprises a primary lens, a diaphragm, a secondary lens and an aberration correction lens group, the diaphragm is arranged on a reflection light path of the primary mirror; the secondary mirror is arranged on one side, deviating from the primary mirror, of the diaphragm; the aberration correction lens group is arranged in the central through hole of the primary lens; light in a target area enters the primary mirror, passes through the diaphragm to enter the secondary mirror after being reflected by the primary mirror, reversely passes through the diaphragm to enter the aberration correction mirror group after being reflected by the secondary mirror, and then is imaged; the curvature radiuses of the vertexes of the reflecting surfaces of the primary mirror and the secondary mirror are respectively-400mm to-360mm and-220mm to-180mm; the axial interval between the primary mirror and the secondary mirror is-140 mm to-120 mm.

The invention provides a combined low-quality peripheral flexible supporting telescope unit and an installation method, and relates to the technical field of optical precision instruments, and the unit comprises a primary mirror, a primary mirror frame, a primary mirror first flexible joint, a primary mirror second flexible joint, a plane weight reduction groove group, a cambered surface weight reduction groove group, a truss, a secondary mirror, a secondary mirror flexible joint and a secondary mirror frame. Titanium alloy is used as materials of a main lens frame, a truss and a secondary lens frame, a plane weight reduction groove set and an arc surface weight reduction groove set are designed, high rigidity is guaranteed, the weight of the structure is greatly reduced, the load weight of the whole optical pod is effectively reduced, a first main lens flexible joint, a second main lens flexible joint, a third main lens flexible joint and a secondary lens flexible joint are designed to make contact with a lens body for stress release, and the service life of the main lens frame, the truss and the secondary lens frame is prolonged. The thermal expansion coefficient of the flexible joint made of the indium steel is consistent with that of the mirror body, so that the thermal stability of the assembly is improved, the precision and the stability of the reflecting mirror surface in a rapidly-changing airborne thermal environment are ensured, and the problem that an existing supporting structure of a hopeful remote system is difficult to give consideration to good thermal stability and extreme light weight of the system is solved.

The illumination optical device comprises a collimator, a light source, and an aperture. The collimator comprises a primary mirror, a secondary mirror, a tertiary mirror and a quaternary mirror mutually tilted so as to form a collimator optical path extending between the light source and the aperture and formed, in succession, by the light source, the quaternary mirror, the tertiary mirror, the secondary mirror, the primary mirror and the aperture. The light source is configured to emit light rays, along respective directions, which form a main beam propagating along directions intercepting the quaternary mirror so as to follow the collimator optical path; and a secondary beam propagating along directions not intercepting the quaternary mirror. The illumination optical device is characterised in that the collimator comprises a shielding structure configured to prevent illumination of the aperture by the secondary light beam.

The application discloses a compact collimator optical system, and belongs to the field of optics; the optical system is sequentially provided with a primary mirror, a secondary mirror, a plane mirror, a target plate and a light source along an optical axis; the primary mirror and the secondary mirror are both quadric surfaces, the primary mirror is a concave surface, and the secondary mirror is a convex surface; the focal length of the optical system is 1500mm-3000mm, the aperture is 200mm-400mm, and the field of view is 0.2-0.5 degrees. The light path is folded multiple times through the secondary mirror and the plane mirror, the compact collimator optical system is designed, the optical system has few optical elements, the structure is compact, the volume and the weight of the optical system are effectively reduced, and the optical system can be applied to a 0.4-14 mu m full-waveband portable collimator optical system.

The application discloses an inner baffle of a coaxial partial field optical system and a design method thereof, and solves the technical problems that the existing inner baffle cannot shield or absorb stray light generated by the reflection of light entering a primary mirror and the primary mirror, especially stray light generated near the edge of a secondary mirror or the edge of a secondary mirror support, and that the stray light directly enters a receiving reflection area of the primary mirror, thereby seriously affecting the detection result formed by receiving the light, and that a least square method is used for three-dimensional profile fitting, and the fitting process is complex. The inner baffle of the coaxial partial field optical system comprises an inner baffle body arranged between the primary mirror and the secondary mirror, wherein the inner baffle body comprises an inner baffle interface, a plurality of light blocking rings and a connecting piece, the plurality of light blocking rings are arranged in parallel and sequentially arranged along the optical axis direction, two adjacent light blocking rings are axially connected through the connecting piece, the connecting part of the two is located in the corresponding end face of the light blocking ring, one end of the inner baffle interface is connected with one of the plurality of light blocking rings close to the primary mirror, and the other end is connected with the primary mirror.

This invention relates to the field of space optical remote sensing technology, and more particularly to a truss structure for a large-size space camera, comprising: a top-level support frame, a bottom-level support frame, a truss system, and an external interface connection assembly; the top-level support frame and the bottom-level support frame are parallel and coaxially arranged; the truss system includes a first truss group, a second truss group, a third truss group, and a fourth truss group; the first truss group is connected between the top-level support frame and the bottom-level support frame; the external interface connection assembly is located between the top-level support frame and the bottom-level support frame; the top-level support frame includes a secondary mirror support ring and a primary mirror support frame, the secondary mirror support ring and the primary mirror support frame being connected by the second truss group; the third truss group is disposed inside the primary mirror support frame; and the fourth truss group is disposed inside the bottom-level support frame. The advantage of this invention is that, through the coordinated design of the top-level support frame, the bottom-level support frame, the truss system, and the external interface connection assembly, an ultra-large-size truss structure is achieved.

The invention discloses a light condensation module for space. The light condensation module comprises a primary mirror, a secondary mirror, a secondary mirror support, a light funnel, a battery piece and a heat expansion piece. The primary mirror comprises a primary mirror base body which forms a sunny side opening of the condensation module, and an optical working surface of the primary mirror faces the secondary mirror; the secondary mirror is fixed to a reflection light path convergence area of the primary mirror through a secondary mirror support, and secondary reflection is carried out on reflection light of the primary mirror to an inlet of the light funnel. The light funnel is of a conical cavity structure and guides light to the light receiving face of the battery piece. The heat expansion piece is tightly attached between the back face of the battery piece and the primary mirror base body. The primary mirror base body is used as a heat dissipation element, a heat conduction path of'battery piece-heat expansion piece-primary mirror base body 'is constructed, integration of optical convergence and heat management is achieved, heat is radiated to a space environment through the surface of the primary mirror while the light condensation efficiency is guaranteed, the working temperature of the battery piece is effectively controlled, an independent heat dissipation component is not needed, and the cost is reduced. The device has the advantages of compact structure and light weight.

The application provides a kind of sub-aperture mosaic spectral calibration detection device and its detection method, wherein the detection device includes: broadband light source, wavelength division multiplexing device, coupler, integrating sphere and spectrometer;Detection device is used to detect large aperture telescope system, and telescope system includes primary mirror and secondary mirror;Broadband light source is used to emit broadband light beam to wavelength division multiplexing device, and wavelength division multiplexing device is used to select the frequency band of broadband light beam, and the incident light beam is transmitted to the pupil of telescope system through coupler, and is incident to focal plane after being reflected twice in primary mirror and secondary mirror of telescope system, and integrating sphere is arranged at the focal plane of telescope system, and the outgoing light beam is transmitted to spectrometer by multimode optical fiber to obtain the actual measured spectral data T (i). The application selects spectrum by wavelength division multiplexing device, and the response generated by different spectrum, finally realizes the splicing detection of system through the cooperation of three domains of space domain, time domain and frequency domain.

The invention discloses a combined panchromatic and hyperspectral imaging lens shared by primary and secondary mirrors. The combined panchromatic and hyperspectral imaging lens comprises a primary and secondary mirror telescope group, a field-of-view separation mirror and a three-mirror aberration correction mirror group. The primary and secondary mirror telescope group is used for receiving target light and converging the target light to the vicinity of the field-of-view separation mirror. And the view field separation mirror is used for turning the light converged by the primary and secondary mirror telescope group and separating the light into a panchromatic view field and a hyperspectral view field. According to the invention, a front-end light-collecting telescope system is constructed by two R-C coaxial reflectors, and an off-axis three-reflector system is connected to correct aberration, so that the design of an imaging system with a large field of view and a small F number is realized; field-of-view separation is carried out on a turning light path near a rear focus of the coaxial primary and secondary mirrors, and respective off-axis three-mirror design is carried out on panchromatic channels and hyperspectral channels of different fields of view in sequence to realize multifunctional imaging; a plurality of turning mirrors are added in respective off-axis three-mirror systems of panchromatic and hyperspectral for optical path folding, so that compact design is realized, and the size of the system is reduced.

According to the technical scheme, the glasses capable of being adjusted and folded are characterized in that the glasses comprise two glasses frames and a middle beam connecting the two glasses frames, and the middle beam is rotationally connected with a connecting base; the connecting seat is detachably connected with a first secondary mirror and a second secondary mirror; the first secondary mirror and the second secondary mirror are respectively opposite to the two mirror frames; two fixing blocks are oppositely arranged on the middle beam; a strip-shaped groove is formed in the surface of the middle beam between the fixing blocks; the connecting seat further comprises a connecting block; rotating shafts are fixedly arranged on the two sides of the connecting block; the rotating shaft is rotationally connected with the fixed block; the connecting block rotates relative to the middle beam connecting block with the rotating shaft as the axis under the action of external force. The glasses capable of being adjusted and folded have the beneficial effects that the adjustment is convenient, the secondary glasses are convenient to overturn, the use is convenient, and the glasses have multiple functions.