114 results about "Reflective system" patented technology

The invention discloses a method for dynamically correcting off-axis aberration of a liquid mirror telescope, which comprises the following steps of: S1, adjusting a secondary mirror body to perform dynamic full-angle circular motion around the center of a primary mirror by using a secondary mirror rotating system, so that the secondary mirror body acquires an incident beam from any direction; s2, acquiring attitude information of the secondary mirror body, and adjusting the secondary mirror body according to the dynamically changeable off-axis angle based on a preset secondary mirror pose adjustment sub-method to compensate for low-order aberration; s3, the light beams of the distorted wavefront compensated by the secondary mirror are adjusted to be emitted in a determined direction in parallel and enter an adjustable beam expanding and shrinking mirror through two groups of plane reflection systems; s4, the light beam with the light spot size adjusted through the adjustable beam expanding and shrinking mirror is reflected to the magnetic liquid deformable mirror through the reflecting mirror; and S5, the magnetic liquid deformable mirror receives the reflected light beam and performs residual aberration correction. According to the method, the observation view field of the liquid mirror telescope can be effectively improved, the imaging quality is improved, and an aberration correction system is endowed with excellent flexibility and wide adaptability.

The invention discloses an off-axis reflection system primary and secondary mirror installation and adjustment method, device and equipment and a storage medium, and the method comprises the steps: placing a primary mirror in a detection light path according to the position setting of an interferometer and a first hologram detection tool, and carrying out the position determination; according to a position determination result, a second hologram gauge is placed in the detection light path so that the positioning reference of the second hologram gauge and the positioning reference of the primary mirror can be kept consistent; and positioning the secondary mirror by using a second hologram gauge, and adjusting the position and posture of the secondary mirror by detecting the light path, so that the positions of the secondary mirror and the primary mirror meet the requirements. The objective of the invention is to solve the technical problems in the prior art that the cost is high, errors are easy to accumulate in the installation and adjustment process, the installation and adjustment effect is poor and the installation and adjustment period is affected because the installation and adjustment of the primary and secondary mirrors need a compensator, and the CGH technology is used to reduce the processing and manufacturing cost of the compensator and improve the detection and alignment precision, the whole process is simple to operate, and the installation and adjustment period is improved.

The invention discloses an optical multi-pass pool modeling and optimizing method, and belongs to the technical field of optical detection. In order to solve the problems that an existing multi-pass cell is too long in length, large in size and inconvenient to carry or transfer, and meanwhile, the mirror surface utilization rate of the multi-pass cell is low, a light path in a multi-pass cell system is accurately modeled by adopting a light ray tracing principle, and the system does not depend on traditional paraxial approximation. The problems that in the prior optical design, due to the fact that equipment is large in size, carrying is inconvenient, and due to the fact that aberration is neglected due to paraxial approximation, large deviation is generated between a calculated value and an actual value are solved. In addition, the light spot distribution is automatically optimized through the genetic algorithm, and the design and debugging time of the optical system is shortened. According to the innovative design strategy, the utilization rate of the reflector is improved, space waste is avoided, the sensitivity and accuracy of a reflection system can be remarkably improved, and further development of the optical multi-pass cell technology is promoted.

A device for generating linearly polarized light having different azimuth angles, and a laser beam machining method. The device comprises: a laser, a half wave plate, an electro-optical modulator, a reflection system and a quarter wave plate, wherein the quarter wave plate is used for adjusting light to linearly polarized light of which the polarization direction has an included angle of 45 degrees relative to a horizontal plane; the electro-optical modulator is used for adjusting the linearly polarized light output by the half wave plate, such that a polarization state of emergent light of the electro-optical modulator always lies on a meridian of a Poincaré sphere, thereby outputting Poincaré meridian polarized light; the reflection system is used for reflecting the Poincaré meridian polarized light to the quarter wave plate; and the quarter wave plate is used for adjusting the reflected light, such that the polarization state of emergent light of the quarter wave plate always lies on the equator of the Poincaré sphere, thereby outputting the linearly polarized light having different azimuth angles. The problem that the laser beam machining effects are affected by change in polarization state caused by reflectors in existing linearly polarized light generating devices is solved.

The invention relates to the technical field of automobile body paint weather resistance testing, in particular to a sunlight self-following reflection system and a control method, and the sunlight self-following reflection system comprises a buried support, a rotation driving mechanism, a rotation platform and a mirror reflection mechanism. The rotary driving mechanism rotates by 360 degrees in a horizontal plane through a driving unit, so that the direction of a vehicle head is always aligned with a solar azimuth angle; the mirror reflection mechanism adjusts the pitching angle of a reflection plate through a micro motor, and it is ensured that sunlight is projected to the surface of a vehicle body with a preset standard irradiance value. The system further comprises an air supply mechanism and an online measuring instrument which are used for cooling, dedusting and tracking the position of the sun in real time. According to the invention, test errors caused by solar altitude changes and regional differences can be eliminated, and the comparability and repeatability of test results are significantly improved.

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 application belongs to the technical field of precision laser processing, and specifically discloses a laser micro-drilling and cutting device and method for a metal foil lead frame, which comprises a processing platform, a clamp, a three-axis motion system, a scanning galvanometer and an ultraviolet nanosecond pulse laser. The clamp applies a pre-tension to the metal foil through a screw rod mechanism and integrates a laser displacement sensor to monitor thermal deformation in real time. The three-axis motion system and the scanning galvanometer cooperate to realize three-dimensional accurate positioning, and a reflection system dynamically regulated by multiple mirrors is combined to ensure that the laser is vertically incident. The method comprises clamping and focusing, image processing and path planning, multi-directional scanning processing and post-processing. The application solves the problems of thermal deformation suppression and micron-level feature accuracy maintenance in large-format processing through optical-mechanical coupling multi-axis linkage control, has the advantages of high precision, environmental protection and high efficiency, and is suitable for the preparation of ultra-thin metal foil lead frames.

The utility model belongs to the technical field of car lamps, and particularly relates to a reflective system which comprises a reflector and a light source, the light emitted by the light source is incident to the surface of the reflector, is reflected by the inner surface of the reflector, and then is emitted to an optical surface A and an optical surface B in parallel, and the optical surface A and the optical surface B are two surfaces which are back to back. The light source is emitted to the optical surface A and the optical surface B in parallel and then is emitted to the optical surface C and the optical surface D; the optical surface B and the optical surface C are oppositely arranged; and the optical surface A, the optical surface B, the optical surface C and the optical surface D form a [-shaped structure. The reflection type system has the advantages that uniformity can be improved, lighting is even and efficient, visual transparency is achieved, and universality is achieved.

The utility model discloses a kind of double-focus reflection systems and the car light with it, the double-focus reflection system includes: thick wall spare and collimating system;One end of the thick wall spare is light-reflecting surface, the other end of the thick wall spare is formed into light emitting surface;The collimating system is formed in one side of thick wall spare;The collimating system includes: first half collimating unit and second half collimating unit;The focal point of the first half collimating unit is equipped with first light source;The focal point of the second half collimating unit is equipped with second light source;The first half collimating unit includes first total reflection surface and multiple first refracting surface;The second half collimating unit includes second total reflection surface and multiple second refracting surface;Multiple first refracting surface and multiple second refracting surface are arranged in multiple, the first total reflection surface and second total reflection surface are oppositely arranged, and respectively located in both ends of multiple first refracting surface and multiple second refracting surface, the utility model has the advantages of saving space occupation, and guarantee lighting effect consistent.

The invention relates to optical hyperfocal reflective systems and methods and augmented reality and / or virtual reality displays incorporating the same. Optical hyperfocal reflection systems and methods are provided. One such optical hyperfocal reflection system has an optical substrate, an optical input coupling portion configured to input-couple a collimated display image to the optical substrate; and an optical hyperfocal output coupling portion integrated with the optical substrate. The optical outcoupling portion includes at least one hyperfocal reflective viewport formed by discrete optical hyperfocal reflector spots integrated with the optical substrate. The discrete optical hyperfocal reflector spot is sized to form a reflected discrete spot beam having a diameter at the target area such that a view of the discrete virtual display image portion seen by a lens detector system positionable at the target area is hyperfocal.

The utility model belongs to the technical field of vehicle lamps, and particularly relates to a total reflection system which comprises a first total reflection surface and a second total reflection surface which are connected with each other and form a total reflection unit, and a plurality of total reflection units are sequentially arranged along a shape follow-up trend line. And the other end of the first total reflection surface and the other end of the second total reflection surface are arranged on the shape follow-up trend line. According to the utility model, the first total reflection surface and the second total reflection surface form the multiple total reflection design of the total reflection unit, so that the incident light can be fully utilized by the system, and the utilization rate of the light is effectively improved; the total reflection units are sequentially arranged along the shape follow-up trend line, so that the total reflection system can well adapt to car lamp models with different inclination degrees, even if the inclination degree of the car lamp models is large, incident light can all irradiate on the total reflection units, and therefore the lighting uniformity of the whole car lamp is improved.

The invention relates to the technical field of regulation and control models, and particularly discloses an elastic wave field regulation and control model based on broadband reflection type mode conversion. The elastic wave mode converter is used for solving the problems that most of existing elastic wave mode converters based on metamaterials or phononic crystals are transmission-type, narrow in working bandwidth and sensitive to processing errors, a reflection system is difficult to achieve accurate and controllable emergent wave front phase, and broadband efficient reflection-type mode conversion and flexible wave field regulation and control are difficult to achieve. The model can realize an achromatic function of a superstructure, so that focusing and abnormal reflection effects are kept stable in a broadband.

A LIDAR system concurrently receives multiple different system return signals that have each been reflected by an object located external to the LIDAR system. The LIDAR system has a data signal generator with multiple light sensors that each receives light from a different one of the system return signals. The data signal generator generates data signals that are each an electrical signal beating at a beat frequency. Each of the data signals is generated from the light from a different one of the system return signals. The LIDAR system includes an analog-to-digital converter configured to receive the data signal in series.

The application discloses an eye light therapy system and device, which comprises a light system including a light source module for emitting light, a reflection system for reflecting the light to the user's eyes, and an adjustment system for adjusting the position of the light source module in the light system and / or adjusting the position of the reflection system to adjust the object distance of the light source module. The application can also adjust the object distance of the light system during the process of the light system irradiating the eyes, so as to change the distance between the visual image seen by the user's eyes and the eyes, move the visual image seen by the user in the distance, adjust the ability of the user to see near and far, and improve the sensitivity of the human eye to near and far.

A light radiating device (1A) performs solidification or cauterization of a biological tissue (PL) by radiating a light beam (BM). A light source (10A) emits the light beam (BM). An optical waveguide (20A) is a member being provided with a reflection surface (21A) totally reflecting the light beam (BM) on an inner circumferential side wall, causing the light beam (BM) emitted from the light source (10A) to enter a part enclosed by the inner circumferential side wall from one end, and sending the light beam (BM) to the other end. A catoptric system (30A) reflects the light beam (BM) sent to the other end of the optical waveguide (20A) and condenses the light beam (BM) on the biological tissue (PL).

A catoptric (mirror-based) optical system uses Scheimpflug optics and non-concentric optics to generate unobscured highly magnified images (e.g., >100x) in EUV reticle inspection tools. The Scheimpflug optics collect light beams from an object plane and directs the light beams along a first optical axis to generate an intermediate image at an intermediate image plane that is oblique to the object plane. The non-concentric optics redirect the light beams from the first optical axis to a second optical axis that is perpendicular to the intermediate image plane and generates a magnified image on a final image plane that is parallel to the intermediate image plane. The Scheimpflug optics may include a first mirror positioned to collect light beams reflected normal to the object plane and a second mirror positioned adjacent to the normal direction and configured to redirect the light beams onto the first optical axis.

A computer-implemented method (100) is described. The method comprises receiving (102) first and second imaging data obtained by an imaging system (204) of a subject (202) illuminated by first illumination (206a) in a first spectral band and second illumination (206b) in a second spectral band comprising different spectral content to the first spectral band. The second illumination incident on the subject is polarized. The received first imaging data is obtained within the first spectral band. The received second imaging data is obtained within the second spectral band. The first and second illumination are admitted, via an imaging system polarizer (310) of the imaging system, into the imaging system depending on a polarization state of reflected first and second illumination received by the imaging system after reflection from a surface of the subject. Information regarding specular reflection from the surface of the subject is determined by comparing the first and second imaging data.

A radio wave reflection system includes an intelligent reflecting surface including a plurality of patch electrodes, an electrode layer, and a liquid crystal layer, and a driver IC electrically connected to the plurality of patch electrodes and including an output signal generating unit and a timing pattern signal generating unit electrically connected to the output signal generating unit. The timing pattern signal generating unit generates a plurality of pattern signals including voltage values corresponding to each of a plurality of predetermined phase values using an address signal indicating a position where the intelligent reflecting surface is to be placed, a power supply voltage, and a pattern selection signal selecting a plurality of parameters including a plurality of predetermined phase values. The output signal generating unit generates a plurality of output signals based on each of the plurality of pattern signals using the plurality of pattern signals.

The invention relates to an adjustable one-way non-reflection system which comprises a waveguide tube, a lossy bypass branch tube, an obstacle and a lossless bypass branch tube. The barrier is rotatably arranged in the center of the waveguide tube; the lossy side branch pipes and the lossless side branch pipes are symmetrically installed at the left end and the right end of the waveguide tube, the two lossy side branch pipes and the two lossless side branch pipes are symmetrically installed on the upper side and the lower side of the waveguide tube, and the two lossless side branch pipes are symmetrically installed on the upper side and the lower side of the waveguide tube. Compared with the prior art, the device has a singular point control function, is higher in adaptability and practicability, and has the advantages of simple structure, adjustability and the like.

The invention belongs to the technical field of wireless communication, and particularly relates to an unmanned aerial vehicle communication system based on intelligent reflecting surface assistance and a joint optimization method, which are characterized in that a mode of deploying an AIRS is proposed, and a rotation angle, namely a direction angle, of an intelligent reflecting surface is introduced; secondly, combining the three-dimensional position of the unmanned aerial vehicle, the active beam forming of the base station and the passive beam forming of the intelligent reflecting surface to describe the signal-to-noise ratio of a user side; an AIRS single reflection system model with the optimization target of maximizing the signal-to-noise ratio of the receiving end is established, and then solving and analysis are carried out according to the characteristics of the AIRS single reflection model. According to the method, through joint optimization design of the three-dimensional track of the unmanned aerial vehicle, active beam forming of the base station antenna and passive beam forming of the intelligent reflecting surface, the signal-to-noise ratio of a single user side can be maximized, and the communication quality is improved.

A LIDAR system includes a signal director that can direct an outgoing LIDAR signal to any one of multiple different alternate waveguides. Each of the alternate waveguides being associated with a different switch channel in that a light signal that includes light from the outgoing LIDAR signal directed to a particular one of the alternate waveguides can be characterized as carrying the switch channel associated with that alternate waveguide. The LIDAR system is configured to output system output signals that include light from the outgoing LIDAR signals. The system output signals carry different switch channels. The LIDAR system is configured to receive system return signals that each includes light from the system output signals after an object located outside of the system has received and reflected the system output signal. A signal combiner that generates different composite signals by combining light from system return signals that carry different switch channels with a reference signal. Electronics calculate LIDAR data from the frequency of one or more of the composite signals. The LIDAR system being configured to continue to generate a composite signal that carries a first one of the switch channels for a substantial period of time after the imaging system has stopped outputting the system output signal that carries the first switch channel.

This invention relates to an adjustable unidirectional non-reflective system, comprising a waveguide, a lossy bypass pipe, an obstacle, and a lossless bypass pipe. The obstacle is rotatably positioned at the center of the waveguide. The lossy and lossless bypass pipes are symmetrically installed at the left and right ends of the waveguide, with two of each type. The two lossy bypass pipes are symmetrically installed on the upper and lower sides of the waveguide, and the two lossless bypass pipes are symmetrically installed on the upper and lower sides of the waveguide. Compared with existing technologies, this invention has the ability to control singularities, greater adaptability and practicality, and advantages such as simple structure and adjustability.

The invention discloses a reflection system and a camera module thereof, and the reflection system comprises a reflection assembly which comprises a first lens, a reflection element and a second lens, the reflection element reflects light incident along a first axis to a second axis, and the reflection element is provided with a light incident side along the first axis and a light emergent side along the second axis, the first lens is arranged on the light inlet side of the reflecting element, the first shaft penetrates through the first lens and the reflecting element, the second lens is arranged on the light outlet side of the reflecting element, and the second shaft penetrates through the second lens and the reflecting element; the first lens, the reflecting element and the second lens are driven to rotate together around a first axis and a third axis; the first lens and the second lens meet the condition that 0.02 mm <-1 > < = D2y / EPDy / d12lt; d2y is the maximum effective half aperture of the second lens in the second direction, EPDy is the entrance pupil diameter of the reflection system in the second direction, and d12 is the axial distance from the image side surface of the first lens to the object side surface of the second lens.

The utility model belongs to the technical field of car lamps, and particularly relates to a reflection system with edge light as a light source, which comprises at least one light source, an imaging part and a light guide plate, the light guide plate is positioned on one side of a light inlet end of the imaging part, and the light source irradiates the imaging part through the light guide plate; the contour line of the imaging part comprises a parabola, the focus of the parabola is a focus F, and the focus F is located near the light outlet of the light guide plate. And the focal point F is positioned at a light outlet of the light guide plate. The reflection system with the edge light as the light source has the effects of being better in lightening effect and weakening granular sensation.

This invention discloses an automated method for compact design of off-axis three-mirror systems, belonging to the field of optical design, to solve the problem of cumbersome, time-consuming, and labor-intensive processes in the compact design of traditional off-axis reflection systems. The method includes: imposing volume constraints on the off-axis three-mirror system to obtain a compact, small-volume off-axis three-mirror system; optimizing the image quality of the obtained small-volume off-axis three-mirror system to improve the system's imaging quality affected by the volume constraints; and iteratively combining the volume constraint process and the image quality optimization process to output a compact off-axis three-mirror system with good image quality. This invention can automatically perform compact optimization design on the input initial model of an off-axis three-mirror system, and it can also be used to quickly and roughly estimate the minimum achievable volume of off-axis three-mirror systems of different specifications.

The utility model relates to the technical field of X-ray detection, and discloses a device for detecting trace heavy metals in soil, plants and water, which comprises a shielding layer, a control sliding table module and an X-ray total reflection system are arranged in the shielding layer, a sample inlet, a cooling fan and a horizontal slide rail are arranged on the shielding layer, a sample table can be drawn out along the horizontal slide rail, and the X-ray total reflection system is arranged on the sample table. The X-ray total reflection system comprises an X-ray tube, a light guide and a detector, and the height and angle of X-rays can be adjusted by controlling the sliding table module. According to the utility model, X-rays pass through the light guide to form an incident angle with an extremely small angle, total reflection is generated on the surface of the sample table, so that background noise generated on the sample table is greatly reduced, and meanwhile, the silicon drift detector is adopted, so that the detection capability is greatly improved, and a relatively good detection capability on trace or trace elements in soil is realized; and the mass is light, the movement and the transportation are convenient, and greater portability is provided for testers.

A vertical all-weather passive thermoelectric power generation device and method based on double-sided reflection structure belong to the technical field of thermoelectric power generation. The present application solves the problems of the existing technology, such as the limited receiving capacity of the hot end of the thermoelectric device to sunlight, large device area, low space utilization, and not conducive to large-scale expansion application. The high-reflection solar panel and the high-reflection infrared panel are arranged on the left and right sides of the thermoelectric power generation panel, and the high-reflection solar panel and the high-reflection infrared panel form a 'V' type reflection system or a 'parabolic cylinder' type reflection system. The present application utilizes the double-sided reflection structure to realize that the cold end and the hot end of the thermoelectric power generation device face the sky, which can improve the receiving capacity of the hot end to sunlight, and can ensure that the cold end faces the sky and the deep cold space for radiation refrigeration, thereby realizing all-weather passive power generation using solar heat energy and deep space cold source at the same time. Moreover, the present application effectively reduces the device area, improves the space utilization, and is convenient for large-scale expansion application.

An optical magnification device (1) for an electronic device (2), the device comprising a folding structure (3) and a support structure (6) for connecting the folding structure (3) to the electronic device (2) such that the focal plane of the optical magnification device (1) is located within the electronic device (2). The folding structure (3) comprises a reflecting system for forming a folded optical path (O), the reflecting system comprising a primary reflecting element (4) and a secondary reflecting element (5). The primary reflecting element (4) comprises a concave reflecting surface and the secondary reflecting element (5) comprises a planar reflecting surface. The distance between the primary reflecting element (4) and the secondary reflecting element (5) can be up to 450 mm and / or the magnification provided by the optical magnification device can exceed x100.

The invention discloses an unmanned aerial vehicle landing guiding device, and relates to the field of unmanned aerial vehicles. Comprising a laser transmitter; the beam expanding system is at least partially arranged above the transmitting end of the laser transmitter; the light splitting system is arranged above the beam expanding system and comprises a plurality of light splitting units which are uniformly arranged along the circumferential direction; the emission window assembly comprises a plurality of first scattering mirrors which at least partially correspond to the light splitting unit and allow laser to pass through. According to the invention, the field of view of the infrared laser beams is spliced, and the signal dead angle is small; a reflective system is used as a collimated beam expansion system, the structure is simple, and the weight is light.

The embodiment of the utility model provides a vehicle-mounted HUD system and a vehicle. The vehicle-mounted HUD system comprises an image display unit, an optical waveguide assembly, a reflection system and a windshield of a vehicle which are sequentially arranged in the light transmission direction. The optical waveguide assembly comprises a first optical waveguide sheet and a second optical waveguide sheet, the first optical waveguide sheet comprises a first coupling-in area, and the second optical waveguide sheet comprises a second coupling-in area; the image display unit can emit at least two beams of projection light rays which are not overlapped on the light ray propagation path, and the projection light rays are respectively projected to the first coupling-in area and the second coupling-in area; the reflection system is used for receiving the projection light from the optical waveguide assembly and reflecting the projection light to the windshield; the windshield can reflect the projection light to human eyes, and meanwhile, a reverse extension line of the projection light forms a virtual image at different scene depths in front of the windshield.