164 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 lidar system (10) comprises a tunable laser source (100) capable of emitting electromagnetic radiation, source radiation (15), which is reflected by an object (105). The lidar system (10) further comprises a multimode waveguide (112) capable of receiving radiation (16) reflected from the object (105), as well as several single-mode waveguides (1151, 1152,...115). n ) and a coupling device (118, 132) which is suitable for coupling the modes (161, 162) of the reflected radiation (16) guided through the multimode waveguide (112) to each of the single-mode waveguides (1151, 1152,...115) n ). The LIDAR system also includes several detection devices (125), each suitable for generating a superposition signal of a partial beam of the source radiation (15) with the reflected radiation (16) transmitted through an associated single-mode waveguide (1151, 1152,...115). nto prove that it has been led by a third party.

The purpose of the present invention is to provide: a reflectarray capable of reflecting, to a specific reflection angle, electromagnetic waves incident from a wide-angle range; an electromagnetic wave reflection system; and an installation method for the reflectarray.　To achieve the foregoing, this reflectarray is characterized in that: the reflectarray has a reflection control region for controlling a phase; the reflection control region satisfies an expression (1), where the longitudinal length of the reflection control region is designated as L, the wavelength of reflected electromagnetic waves as λ, the incident angle as θi, and the reflection angle as θr; the incident angle |θi| is in the range of 45° to 70°; the incident angle θi and the reflection angle θr satisfy the relationship of the following expression (2); and the incident allowable angle range Δθi is in the range of 5.5° to 16°.

The present invention relates to an eye tracking system (100). The system comprises at least one projection means (3) adapted to project a light beam (4) on a predetermined area of a cornea (2) of an eye (1). The system further comprises at least one optical sensor (6) capable of detecting reflected light (5) from the eye (1) and determining the location of detection thereon. The reflected light (5) from the eye (1) comprises at least one, preferably two, specular reflection, preferably at least a first Purkinje reflection (P1), more preferably at least a first Purkinje reflection (P1) and a fourth Purkinje reflection (P4). The system (100) is adapted to calculate the lateral and / or angular translation of the eye (1), or the change thereof, based on the location of detection and / or the displacement thereof.

The invention relates to a LIDAR system (10) comprising a tunable laser source (100) suitable for emitting electromagnetic radiation, namely source radiation (15), which is reflected by an object (105). The LIDAR system (10) also comprises a multi-mode waveguide (112) suitable for receiving radiation (16) reflected by the object (105), and a plurality of single-mode waveguides (1151, 1152, …115n) and a coupling device (118, 132) suitable for supplying each of the modes (161, 162) of the reflected radiation (16) that have been guided through the multi-mode waveguide (112) to one of the single-mode waveguides (1151, 1152, …115n). The LIDAR system also comprises a plurality of detection devices (125) each suitable for detecting a heterodyne signal resulting from the reflected radiation (16) that has been guided through an associated single-mode waveguide (1151, 1152, …115n) heterodyning a partial beam of the source radiation (15).

The invention relates to a system (11) and a method for speed monitoring of vehicles (12, 13), in particular motor vehicles, wherein the system can be arranged on a monitoring vehicle (10) designed as a motor vehicle, wherein the system comprises at least one sensor device (14, 15), wherein at least two, preferably at least three, beams (16, 17, 18, 19, 20, 21) of, preferably pulsed, light can be emitted by means of the sensor device, wherein, when viewed from the system arranged on the monitoring vehicle, the emitted beams are spaced apart from each other laterally to the monitoring vehicle and along a longitudinal axis (22) of the monitoring vehicle, wherein, when a vehicle passes the monitoring vehicle relative to the monitoring vehicle, the emitted beams can be traversed successively by at least one part of the vehicle.wherein, when passing through the emitted beams, the emitted beams are reflectable at the vehicle, wherein reflected beams from the light can be received by means of the sensor device and received signals can be generated from the reflected beams, wherein the system comprises a processing device, wherein, by means of the processing device, a differential speed of the vehicle to the monitoring vehicle can be determined on the basis of the received signals.

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.

To provide a reflect array that can reflect electromagnetic waves incident from a wide angle range to a specific reflection angle, an electromagnetic wave reflection system, and an installation method for the reflect array.SOLUTION: Reflect arrays 61 and 62 that reflect electromagnetic waves have a reflection control area that controls a phase. When the length of the long side is denoted as L, the wavelength of the electromagnetic wave to be reflected is denoted as λ, the incident angle is denoted as θi, and the reflection angle is denoted as θr, the reflection control area satisfies the following equation (1). An incident angle |θi| is in a range of 45° to 70°. The incident angle θi and the reflection angle θr satisfy the relationship of the following equation (2). An incident allowable angle range Δθi is in a range of greater than 5.5° and less than or equal to 16°.SELECTED DRAWING: Figure 8

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.

The invention relates to an assembling method of an optical system, in particular to a precise assembling method of an off-axis three-mirror optical system, and solves the problems that an existing off-axis three-mirror optical system has non-rotational symmetry and optical axes of all components are not on the same axis, so that asymmetric wave aberration exists in the off-axis three-mirror optical system; and high-precision assembly cannot be realized. The precise assembly method of the off-axis three-mirror optical system comprises the following steps: 1) roughly positioning the primary mirror assembly, the secondary mirror assembly and the three-mirror assembly respectively until the angular deviation of each mirror group is less than or equal to 10 ''and the eccentric tolerance is less than or equal to 0.05 mm; the method comprises the steps of (1) analyzing the wave aberration of the off-axis three-mirror optical system and screening the freedom degree according to the wave aberration to carry out image quality correction, (3) calculating the misalignment amount M of a secondary mirror and a third mirror, and (4) precisely adjusting the angles of the secondary mirror and the third mirror according to the misalignment amount M to enable the full-view-field wave aberration of the off-axis three-mirror optical system to be smaller than a threshold value, and completing precise assembly of the off-axis three-mirror optical system.

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 present invention relates to an eye tracking system (100). The system comprises at least one projection means (3) adapted to project a light beam (4) on a predetermined area of a cornea (2) of an eye (1). The system further comprises at least one optical sensor (6) capable of detecting reflected light (5) from the eye (1) and determining the location of detection thereon. The reflected light (5) from the eye (1) comprises at least one, preferably two, specular reflection, preferably at least a first Purkinje reflection (P1), more preferably at least a first Purkinje reflection (P1) and a fourth Purkinje reflection (P4). The system (100) is adapted to calculate the lateral and / or angular translation of the eye (1), or the change thereof, based on the location of detection and / or the displacement thereof.

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.

To provide a reflect array that reflects electromagnetic waves incident from a wide angle range to a specific reflection angle, an electromagnetic wave reflection system, and an installation method for the reflect array.SOLUTION: Reflect arrays have a reflection control area that controls a phase. When the length of the long side is denoted as L, the wavelength of the electromagnetic wave to be reflected is denoted as λ, the incident angle is denoted as θi, and the reflection angle is denoted as θr, the reflection control area satisfies the following equation (1). An incident angle |θi| is in a range of 45° to 70°. The incident angle θi and the reflection angle θr satisfy the relationship of the following equation (2). An incident allowable angle range Δθi is in a range of greater than 5.5° and less than or equal to 16°.SELECTED DRAWING: Figure 2

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.

To provide a reflect array that can reflect electromagnetic waves incident from a wide angle range to a specific reflection angle, an electromagnetic wave reflection system, and an installation method for the reflect array.SOLUTION: Reflect arrays have a reflection control area that controls a phase. When the length of the long side is denoted as L, the wavelength of the electromagnetic wave to be reflected is denoted as λ, the incident angle is denoted as θi, and the reflection angle is denoted as θr, the reflection control area satisfies the following equation (1). An incident angle |θi| is in a range of 45° to 70°. The incident angle θi and the reflection angle θr satisfy the relationship of the following equation (2). An incident allowable angle range Δθi is in a range of greater than 5.5° and less than or equal to 16°.SELECTED DRAWING: Figure 8

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 embodiment of the invention provides an AI-based SDK permission calling method and device, and relates to the technical field of computers. The method comprises the following steps: constructing a target reflection system corresponding to a target system; under the condition that the version of the target system is determined to be larger than a preset version, target HOOK operation is executed on a target API based on the target reflection system to generate target log information, the target API comprises an API corresponding to the sensitive operation and / or an API corresponding to the permission request operation, and the target log information comprises target interaction node feature data; and determining an SDK permission calling result according to the target log information. In this way, the SDK permission calling monitoring process can be simplified, the technical threshold and operation difficulty of SDK permission calling monitoring are reduced, the rectification difficulty of the third-party SDK is reduced, and the rectification efficiency of the third-party SDK 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.

The utility model discloses a time resolution measuring instrument based on nanosecond pulse laser. The measuring instrument comprises a light source system, a multi-pass reflection system and an image acquisition system, the light source system adopts a nanosecond laser and is divided into test light and reference light by a beam splitter, the test light passes through the multi-pass reflection system, and the reference light passes through the multi-pass reflection system. A series of transmission light with different optical path differences generated by multiple times of reflection and transmission enters four CCD surfaces of the image acquisition system to interfere with the reference light filtered by the point diffraction system, each interference pattern correspondingly solves time slice complex amplitude information, and finally time integration is performed to obtain nanosecond pulse laser complex amplitude information. Compared with a traditional wavefront measurement technology, the device can reconstruct complex amplitude information of nanosecond pulse light waves with higher precision.

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.