60 results about "Solar telescope" patented technology

The invention relates to an optical racemization and slit scanning integrated device based on a solar telescope grating spectrometer. The optical racemization and slit scanning integrated device comprises a solar telescope (1), a K1 plane mirror (2), a K2 plane mirror (3), a K3 plane mirror (4), an electrical control translation stage (5), an electrical control rotating platform (6), a grating spectrometer slit (7), a grating spectrometer (8), a photoelectric detector (9), a controller (10) and a data processing and control computer (11). At present, most of solar telescopes use horizontal type rack structures, image field rotation problems are easily caused in the object tracking process by means of the structures, so that on one hand, a special image field racemization device is required to be equipped, and on the other hand, a special slit scanning device is required to be equipped to obtain three-dimensional information of a solar activity region. The optical racemization and slit scanning integrated device is simple in structure, small in occupied space, few in optical mirror planes and high in innovativeness and practicality.

The invention provides a non-contact type measuring device used for measuring mirror surface temperature of a large-diameter solar telescope primary mirror. The non-contact type measuring device mainly comprises a primary mirror panel (1), an air lance (2), an ambient temperature sensor (3), an air jet temperature sensor (4), a total radiation sensor (5), an anemometer (6) and a data processing module (7). During the operating process of a solar telescope, the mirror surface temperature rise of the primary mirror can cause mirror surface seeing effect and mirror surface thermal deformation, and the performance of the solar telescope is severely restricted. The non-contact type measuring device can be used for monitoring mirror surface temperature of the primary mirror in real time, provides important basis for mirror surface temperature control of the solar telescope primary mirror, and provides data for the analysis of the mirror surface seeing effect and mirror surface thermal deformation. When compared with the traditional contact type temperature measuring device, the non-contact type measuring device can effectively avoid damages to a mirror surface coating by the traditional device and measurement errors caused by exposing the temperature sensor in solar radiation; in addition, the non-contact type measuring device is simple in structure, convenient in operation and low in cost, and has high practicality and innovativeness.

The invention relates to the combination of lower transmittance etalons with higher transmittance filters, including use of a single circular polarizer with high efficiency and optical performance for its filtered polarization, to achieve necessary throughput of a narrow bandpass region. The lower transmittance etalons can be achieved by using lower transmittance solid-state etalon materials, or by control of the coatings on the etalon. Alternate configurations are described that reduce the optical assembly's footprint, and/or include additional filters to remove stray light. An innovative option to heat the etalon directly is disclosed to actively stabilize and maintain the etalon's bandpass.

The invention discloses a multi-inlet single-cavity type hot diaphragm cooling device for a ground-based solar telescope. The multi-inlet single-cavity type hot diaphragm cooling device is composed of a plurality of liquid inlet pipes, a plurality of liquid outlet pipes, a cooling cavity and a diaphragm reflection panel. The cooling cavity is located in the back of the diaphragm reflection panel, closely attached to the diaphragm reflection panel and directly connected with the liquid inlet pipes and the liquid outlet pipes. The liquid inlet pipes and the liquid outlet pipes are evenly arranged on a circular ring with the main light axis of the telescope as the axis. The liquid inlet pipes are closer to the main light axis of the telescope than the liquid outlet pipes. According to the multi-inlet single-cavity type hot diaphragm cooling device, the cooling efficiency of the multi-inlet single-cavity type hot diaphragm cooling device is greatly improved, meanwhile, the structure of the multi-inlet single-cavity type hot diaphragm cooling device is simplified so that the multi-inlet single-cavity type hot diaphragm cooling device can be convenient to manufacture, assemble and seal, and the application range of the multi-inlet single-cavity type hot diaphragm cooling device is expanded.

The invention provides a big-caliber foundation solar telescope hot field diaphragm cooling device based on a jet cooling principle. The device comprises a liquid inlet channel, a pressure cavity, a spraying pipe, a jet flow cavity, a reflection panel and a liquid outlet channel. According to fluid continuity and a jet flow cooling principle, the big-caliber foundation solar telescope hot field diaphragm cooling device greatly improves cooling efficiency, and overcomes the defects that a traditional hot field diaphragm cooling device using forced water cooling needs large amounts of cooling liquid and is not uniform in temperature distribution after cooling, and the like. The hot field diaphragm cooling device has high cooling efficiency and can achieve good cooling effects with small cooling liquid flow. Meanwhile, a surface temperature of a diaphragm is low after cooling, temperature distribution is uniform, damage to air seeing in the working process of the diaphragm of a hot field is further reduced, and telescope imaging quality is effectively improved.

The invention discloses a total-absorption ideal field-of-view diaphragm device suitable for a symmetrical optical path solar telescope. The total-absorption ideal field-of-view diaphragm device aims to realize segmented total absorption of field-of-view optical energy within a limited space, and overcomes the adverse factors on image quality such as stray light and vignetting. The total-absorption ideal field-of-view diaphragm device specifically comprises an inner layer heat-absorbing and refrigerating device and an outer layer heat-absorbing and refrigerating device, wherein the inner layer heat-absorbing and refrigerating device specifically comprises a reflection diaphragm liquid inlet channel 1, a reflection diaphragm liquid outlet channel 2, a diaphragm bracket 5, a flow guide cover 6 and a reflection diaphragm 7; and the outer layer heat-absorbing and refrigerating device specifically comprises a light-eliminating cylinder liquid inlet channel 3, a light-eliminating cylinder liquid outlet channel 4 and a light-eliminating cylinder. By adopting the technical scheme provided by the invention, the total-absorption ideal field-of-view diaphragm device can achieve the advantages that the subsequent focal plane has no vignetting, no stray light entes the effective field of view, the thermal uniformity of the optical path is good and the like.

The invention provides an image despinning device capable of being applied to a slit type grid spectrometer of a solar telescope. The device comprises a solar telescope system (1), an optical fiber clamp slot (2), an area array optical fiber clamp end (3), a support circular disc (4), a rigid connecting body (5), a power-driven rotation platform (6), an optical fiber beam (7), a linear array optical fiber clamp end (8), the slit type grid spectrometer (9), an imaging system (10), a computer data processing system (11) and a rotary angle controller (12), wherein a telescope focal surface is connected with the slit type grid spectrometer in the rear end through the optical fiber beam, according to the principle of simple optical fiber beam flexible image transmitting, relay is carried out on a solar image which enters into the slit type spectrometer, and conversion of the scope of the solar image via flexible rotation is realized. The device is small in structure, light in weight, simple in use and flexible in structure, so that the separation of the telescope system from the spectrometer on a space can be realized, and the position and the placing range of the spectrometer are not limited.

The invention discloses a hot diaphragm adjustable segmentation supporting device for a coaxial solar telescope. The hot diaphragm adjustable segmentation supporting device is composed of a hot diaphragm, inner-ring narrow beams, metal capillary tubes, an inner ring, hoses, outer-ring wide beams, guide rails and an outer ring. The hot diaphragm adjustable segmentation supporting device for the coaxial solar telescope has the advantages of being less in blocked light, adjustable and the like, further improves the accuracy of wavefront detection of a solar telescope self-adaptation optical system, and finally improves the imaging quality of the solar telescope. Meanwhile, optical assembly and adjustment of the hot diaphragm are greatly simplified. The hot diaphragm adjustable segmentation supporting device for the coaxial solar telescope can be applied to supporting various hot diaphragms of the coaxial solar telescope, and is remarkable in innovation performance and practicability.

The invention discloses an out-of-focus solar telescope guidscope based on a pupil shield. According to the technical scheme, the pupil shield is installed in the center of a star guide optical axis in front or back of a guidscope focusing lens. By the utilization of the out-of-focus solar telescope guidscope based on the pupil shield, partition of mirror planes or machining, installation and adjustment of four optical wedges can be eliminated, and assembly and adjustment are extremely convenient.

The invention provides a calibration device for a solar telescope heat field diaphragm internal seeing effect. The calibration device comprises a laser device (1), a beam expansion and shrinkage system (2), a heat field diaphragm (3), a beam shrinkage collimation system (4), a wavefront detector (5), a pump (6), a constant temperature water tank (7), a heat field diaphragm temperature sensor (8), an air temperature sensor (9) and a computer (10). The heat field diaphragm is one of the most important heat control devices inside a solar telescope, and the performance of the solar telescope is greatly limited by the internal seeing effect caused by temperature rising of the heat field diaphragm. The device can calibrate the quantitative relation between the temperature difference and the internal seeing effect, quantitative measurement on the solar telescope heat field diaphragm internal seeing effect can be achieved by measuring the temperature difference according to a calibration result, and important bases are provided for controlling the large-caliber solar telescope heat field diaphragm internal seeing effect. The device is simple in structure, convenient to operate, low in cost and high in practicality and innovation.

The invention relates to a solar telescope guider taking optical wedges as refractive elements. A video CCD (Charge Coupled Device) is arranged on a guider lens barrel or a main lens barrel. The solar telescope guider is characterized in that four optical wedges are arranged in front of a guided objective lens and are same in angle and shape; the installation positions of the four optical wedges are as follows: the four optical wedges are uniformly distributed at an angle of 90 degrees around the center shaft of the guided objective lens; the mutual directions of the four optical wedges are as follows: the four optical wedges are respectively arranged at angles of 90 degrees; and the parameters of the four optical wedges are as follows: optical wedge angles alpha are 32-40 arc minutes, light deflection angles beta are 16-20 arc minutes, and the glass refractive index n is 1.4-1.6. According to the invention, the defects of low accuracy, low anti-interference capability or high cost or more complex objective lens cutting and deflecting assembly, and the like in the prior art are overcome; and lens surface cutting is prevented in such a way that a solar image is deflected by utilizing the refraction of the optical wedges, so that great convenience for assembly and debugging is achieved. The solar telescope guider disclosed by the invention has the advantages of simple structure, easiness for manufacture and assembly and convenience for batch production.

The invention provides a solar large-view-field high-resolution imaging telescope based on a deformable secondary mirror. The telescope comprises a primary mirror, a primary mirror temperature controlsystem, a thermal field diaphragm, a deformation secondary mirror, a six-axis parallel mechanism, a relay reflector group, a large-field wavefront detector, a large-field imaging detector and the like, and the deformation secondary mirror and the six-axis parallel mechanism are combined to correct surface atmospheric turbulence wavefront distortion in real time. The size of a typical solar activity area is 1-2 angular minutes, a traditional self-adaptive optical telescope is limited by an isoplanatic area, a high-resolution imaging view field is only about 10 angular seconds, and the large-view-field high-resolution observation requirement of the solar activity area cannot be met. The objective of the invention is to realize high-resolution imaging with a larger field of view. According to the invention, the deformation secondary mirror and the six-axis parallel mechanism in the telescope primary optical system are used for correcting the atmospheric turbulence of the earth surface layer, high-resolution imaging of a field of view of more than 2 angular minutes can be realized on a large-aperture (2m-8m) solar telescope, and the overall real-time high-resolution imaging of a solaractivity area is satisfied.

The invention belongs to the optical precision test technology field and particularly relates to an optical system for a solar telescope. The system comprises a main mirror, a heat diaphragm, a field diaphragm, a collimation lens, a reception lens and an image plane. The system is characterized in that the field diaphragm is an arc-shaped structure, the surface of the field diaphragm facing the incidence light is coated with a reflection film, and a problem that failure of high-resolution task observation caused by influence of stray light flooding on field signals because of great heat accumulated on the field diaphragm is solved.

The invention provides a vacuum sealing device for a thermal diaphragm of a solar telescope. The vacuum sealing device comprises a cylindrical shell, wherein through grooves are formed in the top wall, the bottom wall and the side wall of the shell, and glass sealing windows are embedded in the through grooves. A diaphragm body is fixed into the shell, and the inside of the shell is in a vacuum sealed state. A concentrated light beam reflected by a primary mirror of the solar telescope penetrates through the glass sealing window on the top wall of the shell, after reaches a inclined plane of the diaphragm body, a small part of the light beam passes through an open hole in the middle part of the diaphragm body and penetrates through the glass sealing window on the bottom wall to a rear optical system, and most of the light beam is reflected by the inclined plane of the diaphragm body and then penetrates out of the glass sealing window on the side wall of the shell. According to the vacuum sealing device for the thermal diaphragm of the solar telescope encapsulates, the core region thermal diaphragm of the telescope is sealed and vacuumized to achieve the purpose of suppressing the turbulence caused by heat of the diaphragm of a field of view, and the technical problems that the aperture of a cylinder of the solar telescope cannot continue to be large and the image quality at theopen structural diaphragm is poor due to the fact that an overall vacuum enclosed structure is adopted are solved.

The invention provides a thermal diaphragm suitable for an annular solar telescope. One end of the thermal diaphragm suitable for the annular solar telescope toward the direction of light incidence isa reflective surface, and the other end is a bottom surface; the reflective surface of the thermal diaphragm suitable for the annular solar telescope is an inverted cone shape, and the bottom surfaceis a positive cone shape; the reflective surface with the inverted cone shape and the bottom surface with the positive cone shape are tangent at the vertexes of the two cones to form a light passinghole; and the cone angle of the inverted cone of the reflective surface is 88 to 93 degrees. The thermal diaphragm structure design provided by the invention strengthens the thermal control ability near the light passing hole, optimizes the temperature field near the light passing hole, reduces stray light to the greatest extent, and suppresses a ghost image; and the thermal diaphragm suitable forthe annular solar telescope has good temperature control effect, no ghost image and good stray light suppression effect, which ensures the imaging quality of the telescope.

The invention relates to a large-caliber solar telescope full absorption thermal diaphragm based on dual-channel cooling. The large-caliber solar telescope full absorption thermal diaphragm has smallinterference to light path, is easy to control in temperature, and is less likely to be affected by environment, so that the solar telescope delivers a much better observation effect. Structurally, the thermal diaphragm comprises a shell, an absorption screen, a middle cone, and a conic view field diaphragm that are arranged coaxially in sequence from outside to inside, wherein an outer pressure cavity is formed between the shell and the absorption screen, an absorption cavity is formed between the absorption screen and the middle cone, an internal pressure cavity is formed between the middlecone and the conic view field diaphragm, an entrance water storage tank communicated with the internal pressure cavity is arranged outside the internal pressure cavity, the entrance water storage tankis provided with a liquid inlet tube, the water inlet tube is communicated with a cooling liquid supply device, an external pressure cavity and the internal pressure cavity are communicated through aconnection tube, one end of a liquid outlet tube is communicated with the external pressure cavity, the other end thereof is communicated with the cooling liquid supply device.

A solar telescope is disclosed that facilitates safe observation of the sun with minimal setup, targeting effort or operator skill. The folded solar telescope of the invention includes a friction stabilized telescope support system that is capable of maintaining a specified telescope orientation. The telescope further includes a targeting system that comprises one or more pointing aids to simplify the process of aligning the telescope with the sun so a solar image is projected onto a viewing surface.

Provided is a double-shaft multi-optical path channel switching device suitable for a large solar telescope. The switching device consists of a radial adjusting seat 1, an inclined fixed seat 2, a support 3, a view field diaphragm 4, a vertical rotation shaft motor 5, an axial adjusting seat 6, a double-channel rotation shaft 7, a polarization device 8, a driving worm and gear pair 9, a horizontal rotation motor 10, a positioning switch 11, a connection plate 43, a circular separation plate 12, a locking screw 42, an adjusting screw 13, an adjusting screw 31 and an adjusting screw 41. According to the invention, rapid switching and precise positioning of polarization devices or other optical devices can be achieved through computer control; rapid switching and precise positioning of different sizes of view field diaphragms or other devices can be achieved through computer control; by setting a five-dimensional manual adjusting mechanism, positions of the polarization devices and the diaphragms can be precisely adjusted and firmly locked; and the switching device is compact in structure and will not shield optical paths.

The invention discloses a composite thermal diaphragm cooling device for a solar telescope. In a large-aperture solar telescope system, the sunlight cut off by a thermal diaphragm will not only causetemperature rise but also bring a stray light source. The composite thermal diaphragm cooling device comprises a thermal diaphragm base body, a jet impingement plate, a reflecting plate and a thermaldiaphragm plug-in, wherein the thermal diaphragm base body is provided with an optical path channel at the central position; a reflecting surface of the thermal diaphragm base body is provided with adiaphragm placement groove and a jet cavity; the reflecting surface of the thermal diaphragm base body is fixed with a reflecting plate; the inner side surface of the reflecting plate is fixed with the jet impingement plate; the thermal diaphragm base body is internally provided with n liquid inlet flow channels and n liquid outlet flow channels; the thermal diaphragm plug-in is plugged in the diaphragm placement groove of the thermal diaphragm base body; the middle part of the thermal diaphragm plug-in is provided with a light inlet channel; and the edge of the outer side surface of the thermal diaphragm plug-in is flush with the inner contour of the reflecting plate, and the middle part is set in an outward protruding manner. The composite thermal diaphragm cooling device can increase the Reynolds number of a cooling liquid in the liquid inlet flow channels through a gradual-shrinking hole design, and thus enhances the heat exchange performance.

The invention discloses a supporting device for a front filter lens of a space solar telescope. The supporting device comprises an upper support module, a lower support module and a middle support; an upper optical filter support is formed in the upper support module, and an upper optical filter is embedded in the upper support module through the upper optical filter support; a lower optical filter support is formed in the lower support module, and a lower optical filter is embedded in the lower support module through the lower optical filter support; the middle support is provided with an upper surface close to one side of the upper support module and a lower surface close to one side of the lower support module; and the lower surface is a reference surface, the upper surface is obliquely arranged relative to the lower surface, and a 2-degree included angle is formed between the upper surface and the lower surface. According to the supporting device, the three-section structure of the upper support module, the lower support module and the middle support is adopted, and the upper surface and the lower surface which form the included angle of 2 degrees are designed on the middle support, so that the machining difficulty of the mirror base is greatly reduced, the machining cost is correspondingly reduced, and the three-section structure also reduces the assembly difficulty.

The present invention discloses an efficient temperature control device for solar telescope primary lens surface seeing effect control. The device comprises a primary lens, a lens surface sensor, a refrigeration set, a refrigeration machine external circulation cooling system, a surface cooler, a pumping pump, a fan, an electric heater, a sealed box, a controller and an environment temperature measurement device. The goal of the temperature control device is to carry out temperature control of the primary lens, thus the measurement value of the lens surface sensor is consistent with the measurement value of the environment temperature measurement device, and thus the purpose of controlling a lens surface seeing effect is achieved. Specifically the temperature control of the primary lens surface is realized by controlling the power of the electric heater and the cooling medium refrigeration temperature of the refrigeration set by the controller. Through the surface cooler, the contact area of a cooling medium is increased, the heat exchange efficiency is raised through blowing of the fan, the cold and heat loss is reduced through the sealed box, and the control response efficiency of the primary lens surface temperature is greatly improved.

The invention relates to a space telescope based on digital time marks. The space telescope comprises a scintillation crystal probe module, an SiPM simulation signal module, a multi-channel digital time module and a scintillation pulse signal processing module. Light signals and simulation signals are converted into digital signals at an early-most photoeletric conversion stage, and the digital signals are transmitted to a host computer or a signal processing unit in a compressed data bulk mode. According to the system, digitalization is realized at an early-most stage of avalanche diode response photons, advantages of relatively good time spatial resolution, small computational complexity, good repeatability, strong system adaptability and independence from light beam characteristics are realized, and inherent characteristics of the light beam data can be learned.