107 results about "Curved mirror" patented technology

The invention discloses a vehicle-mounted HUD optical performance comprehensive detection method, and aims to solve the problems that a traditional detection method depends on manual operation and is low in detection efficiency and large in error. Project loading and test starting, picture height position calibration, multi-parameter test, brightness and chromaticity test, ghosting test, static distortion test and binocular parallax test items are automatically implemented through detection equipment, and accurate control (such as application of camera pixel-millimeter ratio) of advanced image recognition algorithm and equipment in the test process is carried out. The vehicle machine controls the step number of the curved mirror motor, and the industrial personal computer controls the motion module, so that high-precision measurement of optical parameters is realized, and the test efficiency and the test accuracy are improved.

The invention relates to the technical field of optical element machining, in particular to an HUD free-form surface mirror machining method which comprises the following steps of S1, substrate selection and cutting, S2, edge treatment, S3, first-stage hot bending forming, S4, second-stage hot bending forming and S5, grinding. According to the machining method disclosed by the invention, through cooperative use of the first-stage hot bending forming and the second-stage hot bending forming, machining operation of the free-form surface mirror with the large size, the large curvature and the small thickness can be achieved; meanwhile, through the two-stage hot bending forming process, primary forming is conducted through first-stage hot bending forming, pressure maintaining is conducted near a softening point through second-stage hot bending forming, the glass is evenly heated and stressed, residual stress is effectively released, the surface type is promoted to present an ideal gradual change trend, edge distortion is greatly reduced, and the high-precision surface type of the final curved mirror is ensured.

A fundus imaging apparatus includes two or more curved mirrors, an illumination optical system, and an image sensor. The illumination optical system includes a slit with an opening configured to be disposed at a fundus conjugate position. Here, the fundus conjugate position is substantially conjugate optically to a fundus of an eye to be examined. The illumination optical system is configured to irradiate slit-shaped illumination light, that is generated by irradiating light from a light source onto the slit, onto the fundus through the two or more curved mirrors. The image sensor is configured to be disposed at the fundus conjugate position and to receive returning light from the eye to be examined. At least one of both ends of the opening in a longitudinal direction is displaced in a shorter direction of the opening with reference to the longitudinal direction passing through a center of the opening.

An eyewear display device implements a curved lightguide to form an intermediate image between an incoupler and an outcoupler. The curved lightguide produces an approximately 20-degree diagonal field of view (FOV) full-color display having approximately 10% red, blue, green efficiency with uniform color and luminance for a micro-display at a temple of an eyewear display device. The curved lightguide incorporates freeform mirror incouplers and / or outcouplers and color-corrected relay optics. Using an intermediate image stage in the optical pathway allows for use of a compact incoupler that does not exceed a thickness of the curved lightguide.

This invention discloses a sub-aperture stitching interferometric measurement device and method for optical freeform surfaces. The device includes a laser interferometer, a variable phase compensator, and a multi-axis motion stage for motion control of the mirror under test. The variable phase compensator consists of two freeform surface mirrors and two wedges, used to achieve phase compensation with a large dynamic range for each sub-aperture. The system automatically adjusts the compensation phase of the sub-apertures using a weighted stochastic gradient descent algorithm and performs in-situ measurement of the compensation phase using a micro-translation misalignment measurement method. The system can realize three measurement modes: full aperture coverage stitching measurement, sub-aperture coverage stitching measurement, and comprehensive measurement. This invention enables high-precision measurement of flexible, complex optical freeform surfaces (such as gull-wing surfaces).

The utility model relates to a kind of automobile head-up display curved mirror fixing structure, including curved mirror, metal curved mirror support, main shaft component, vice shaft component, curved mirror is fixedly bonded on metal curved mirror support;Main shaft component includes main shaft support and bearing, main shaft support is fixedly connected with metal curved mirror support by first fastener, bearing is rotatably matched with main shaft support, and main shaft motor drive connection part is provided on main shaft support;Vice shaft component includes vice shaft support and bearing, vice shaft support is fixedly connected with metal curved mirror support by first fastener, bearing is rotatably matched with vice shaft support;Screw hole is provided on the bearing in main shaft component and vice shaft component, and fixed on HUD shell by screw locking.The utility model provides a kind of automobile head-up display curved mirror fixing structure, to improve the rigidity and modal of curved mirror assembly, improve image jitter problem, while it is beneficial to realize the platformization of component and reduce cost.

An image projection device that can effectively curb an increase in temperature of an image projecting unit due to external light while maintaining quality of a projected image is provided. The image projection device includes an image projecting unit configured to emit projection light including an image, a first freeform curved mirror reflecting the projection light incident from the image projecting unit, an intermediate mirror reflecting the projection light incident from the first freeform curved mirror, and a second freeform curved mirror reflecting the projection light incident from the intermediate mirror and causing the projection light to reach a viewpoint. A component in at least one imaging axis direction of the projection light reflected by the first freeform curved mirror forms an image at an intermediate imaging position before the projection light reaches the second freeform curved mirror, and the intermediate mirror is arranged at the intermediate imaging position.

The application provides a large-aperture curved surface optical transceiver, which utilizes a single bottom spliced lens assembly, at least one middle spliced lens assembly and a single top spliced lens assembly to obtain a spliced lens used as a curved surface mirror in the large-aperture curved surface optical transceiver, so that the large-aperture curved surface optical transceiver does not need to use expensive large-aperture processing equipment for processing, and the processing time of the large-aperture curved surface optical transceiver is shortened.

The application relates to a plurality of curved surface integrally-formed myopia glasses lenses, and belongs to the technical field of glasses lenses. The plurality of curved surface integrally-formed myopia glasses lenses are of an integrally-formed structure, are more practical, and are of a light-transmitting structure. The side of the myopia glasses lenses close to the human eye is an inner arc surface, and the side far from the human eye is an outer arc surface. The outer arc surface is a smooth mirror surface, the mirror surface can realize a large-curvature mirror surface, and is more beautiful than a traditional mirror surface. In the inner arc surface, concave surfaces are uniformly distributed on the left and right sides to perform diopter compensation. The myopia glasses lenses can be a plurality of curved surface lenses, a spherical myopia lens or a double-curved surface myopia glasses lens or a cylindrical myopia glasses lens, and the whole is more practical and beautiful.

The invention relates to a laser processing head for monitoring a processing operation on a workpiece, comprising at least one optical element and at least one optical sensor device. The optical element is designed to reflect process radiation emanating from the workpiece and irradiated into the laser processing head toward the optical sensor device. The optical element acts as a curved mirror for the process radiation. The optical sensor device is designed to measure the process radiation in order to monitor the processing operation on the workpiece.

The PVD auxiliary feeding device comprises a base and lifting chain systems used for vertically conveying material trays, a material taking area is arranged on the right side of the base, a non-material taking area is arranged on the left side of the base, and the lifting chain systems are fixed to the front end and the rear end of the material taking area and the front end and the rear end of the non-material taking area. Top sliding tables are arranged at the positions, close to the inner sides, of the upper ends of the lifting chain systems on the left side and the right side of the front end and the left side and the right side of the rear end correspondingly, rotating motors are arranged at the output ends of the top sliding tables, and rotating supporting plates are arranged at the output ends of the rotating motors. Bottom sliding tables are arranged at the positions, close to the inner sides, of the lower ends of the lifting chain systems on the left side and the right side of the front end and the left side and the right side of the rear end correspondingly, and bottom push plates are arranged at the output ends of the bottom sliding tables. According to the free-form surface mirror feeding device, the charging tray filled with free-form surface mirrors can be automatically lifted to the preset height, the feeding time is saved, and pollution to a dust-free room in the feeding process is reduced.

The invention relates to a projection system comprising - a beam generator (140) for generating a modulated collimated light beam (LBM); - a projection surface (21); and - a mirror unit (73) for moving the modulated collimated light beam (LBM) over the projection surface (21), wherein the mirror unit (73) has a curved mirror element (730).

The utility model relates to a cleaning system for a planar or micro-curved heliostat, which belongs to the technical field of heliostats and comprises a central control unit, an unmanned aerial vehicle, a cleaning robot and a water storage structure. The central control unit is connected with the unmanned aerial vehicle, the cleaning robot and the water storage structure. The unmanned aerial vehicle is used for transporting the cleaning robot to a designated position. The cleaning robot is used for cleaning a lens of the heliostat at a specified position; the water storage structure comprises baffles, water conveying pipes, a water pump and a water storage device. Baffles are mounted around the lenses, and the multiple baffles are connected to form a closed structure; the water storage device is arranged on the ground near the heliostat; the top end of the water conveying pipe is arranged above the lens and is positioned above or laterally above the lens when the heliostat is in a vertical state; the bottom end of the water pipe is connected with the water storage device. The cleaning robot has no requirement for field pavement flatness, can achieve simultaneous continuous operation of a plurality of cleaning robots, and is efficient and stable in cleaning and high in automation degree.

The application relates to the field of lens testing, in particular to a glass lens wear resistance testing equipment. The glass lens wear resistance testing equipment comprises a chassis, a lifting unit, a protective cylinder, a switching unit and a friction head and the like; the chassis is connected with the lifting unit; the lifting unit is connected with a plurality of protective cylinders; each protective cylinder corresponds to a rubber head; each protective cylinder is connected with a switching unit; each switching unit is connected with a friction head; the upper and lower surfaces of the friction head are respectively convex and concave, and the upper and lower surfaces are both rough surfaces. The glass lens wear resistance testing equipment realizes self-adaptive testing of plane / curved surface lenses through pneumatic adsorption and fixation of the rubber head and cooperation of the reversible friction head, realizes intelligent and rapid switching of multiple working conditions while ensuring the singleness of the testing conditions in combination with the anti-pollution design of the protective cylinder and the precise abrasive spraying of the diaphragm electric nozzle, and significantly improves the lens wear resistance testing efficiency and data accuracy.

The application provides a projection device, a vehicle and a display device. The projection device comprises an image source, a mirror, a dust cover and a curved mirror. The image source is configured to output N light beams of image contents, N is an integer greater than or equal to 1, the mirror is configured to reflect the received light beams to the dust cover, the dust cover is located on the light path between the image source and the curved mirror, and on the light path between the mirror and the curved mirror, and is configured to transmit the received light beams to the curved mirror, and the curved mirror is configured to reflect the received N light beams to form images corresponding to the N image contents.

The invention discloses a composite restraint layer damping vibration attenuation structure for a curved mirror, and belongs to the technical field of optical precision instruments. The structure comprises a curved lens, a viscoelastic material layer laid on the back surface of the curved lens, and a metal restraint sheet attached to the viscoelastic material layer. The core is that the metal constraint sheet has non-uniform rigidity and mass distribution in collaborative design. The cross section of the steel plate is a step-shaped outline formed by alternately connecting a plurality of web sections and wing plate sections, and preset rigidity gradient distribution in the specific direction is achieved by enabling the web sections to have the length changing in a gradient mode. And meanwhile, an opening array is integrally formed on each plate section forming the step-shaped outline, so that preset mass distribution is realized. Through collaborative design, the structure can be coupled with a plurality of high-frequency vibration modes such as bending and torsion of the lens, and energy is efficiently dissipated. According to the vehicle-mounted head-up display system, the problems of image dithering and blurring caused by lens vibration in the vehicle-mounted head-up display system are effectively solved through a lightweight and miniaturized structure.

The utility model relates to the technical field of vehicle parts, particularly provides a head-up display curved mirror fixing structure, a head-up display and a vehicle, and aims to solve the problem that the normal work of a rotating shaft is affected due to clamping stagnation of the rotating shaft of the curved mirror caused by strength enhancement of the fixing structure of the rotating shaft of the curved mirror in the prior art. In order to achieve the purpose, the fixing structure for the curved mirror of the head-up display comprises a base; the base is provided with a side opening end and an upper opening end, and one end of the rotating shaft can be placed in the base; the limiting piece covers the upper opening end of the base in a clamping manner; the limiting piece comprises a base plate, clamping parts arranged at the two ends of the base plate and an elastic piece arranged on the base plate. The substrate is provided with an open hole, and the part, opposite to the open hole, of the elastic piece penetrates through the open hole and extends into the base in an unstressed state. According to the fixing structure, the substrate and the elastic piece which are relatively independent in structure and function are arranged, so that the overall strength of the fixing structure can be ensured, and the vibration of the rotating shaft can be eliminated by the elasticity of the elastic piece.

The invention provides an HUD curved mirror angle control method and system and a vehicle. The HUD curved mirror angle control method comprises the following steps: collecting a group of real-time accelerations output by a first accelerometer every a set period, and verifying the real-time accelerations, so as to obtain an actual acceleration based on a preset group of real-time accelerations when the verification is passed; obtaining the measurement angle of the curved mirror according to the actual acceleration and the gravitational acceleration, obtaining the parking inclination angle of the second accelerometer, and calculating the angle of the curved mirror based on the measurement angle and the parking inclination angle; and a driving motor of a curved mirror rotating shaft is further adjusted according to the curved mirror angle. According to the invention, closed-loop control is realized, and the curved mirror is rotated to a preset angle, so that the accuracy and stability of an imaging position are ensured, and the reliability and use value of the HUD are improved; and moreover, the HUD is not interfered by the environment and can stably work under the conditions of different temperatures, voltages and the like, so that the adaptability and the stability of the HUD in various complex environments are further improved.

A laser processing head for monitoring the processing of a workpiece comprises at least one optical element and at least one optical sensor device. The optical element is configured to reflect process radiation emanating from the workpiece and directed into the laser processing head to the optical sensor device. The optical element acts as a curved mirror for the process radiation. The optical sensor device is configured to measure the process radiation in order to monitor the processing of the workpiece.

A near-eye display device, including: a display device (1) for displaying an image; an imaging lens (2) on a light-outgoing side of the display device (1) and for imaging the image displayed on the display device (1); a polarizer (3) on the light-outgoing side and for converting light emitted from the display device (1) into linearly polarized light; first and second phase delay layers (41,42), on a side of the polarizer (3) distal to the display device (1) and for converting a polarization state of incident light; a polarized light splitter (5) on a side of the second phase delay layer (42) distal to the polarizer (3); and a curved mirror (6) on a reflected light path of the polarized light splitter (5) and for partially reflecting light transmitted by the second phase delay layer (42) to human eyes and partially transmitting ambient light.

The application discloses a head-up display and a vehicle, and relates to the technical field of vehicle-mounted displays. The head-up display comprises a shell, a mirror assembly and a driving assembly. The mirror assembly comprises a curved mirror rotatably connected to the shell and a worm gear arranged at the bottom of the curved mirror. The driving assembly comprises a motor support, a motor, a worm support, a worm, an adapter ball head and an elastic member. The motor support is fixed to the shell, and the motor is fixed to the motor support. The worm support is movably connected to the motor support, and the worm is rotatably arranged in the worm support. The output shaft of the motor is drivingly connected to one end of the worm through the adapter ball head. The worm is meshingly connected to the worm gear. The elastic member is arranged between the shell and the worm support, and is used for pushing the worm support so that the worm abuts against the worm gear. The application realizes reliable installation of the motor support and the motor on the shell, improves the stability of the driving assembly, eliminates the transmission gap between the worm and the worm gear, and reduces the loss of the elastic member.

A fitting method for an astigmatic contact lens set and an associated astigmatic contact lens set. The astigmatic contact lens set includes an apodization monooptic lens for lower lenticular error correction and a toric lens for higher lenticular error correction. An astigmatic eye having a lenticular error greater than a higher specified lenticular error label focal power (e.g., gt; 1.25 diopter (D)) may be equipped with a non-apodized toric lens with a stabilization mechanism. However, astigmatic eyes having lenticular errors up to higher specified lenticular error label powers (e.g., < = 1.25 diopters (D)) may be equipped with apodized monocular lenses. The apodized monocular lens has an apodized distribution that reduces aberration to provide improved vision, so that a larger number of astigmatic patients up to higher lenticular error can achieve acceptable vision with the apodized monocular lens and improve comfort due to the absence of a stabilizing mechanism.

The application discloses a composite constraint layer damping vibration reduction structure for a curved mirror and belongs to the technical field of optical precision instruments. The structure comprises a curved mirror, a viscoelastic material layer laid on the back of the curved mirror, and a metal constraint sheet attached to the viscoelastic material layer. The core of the structure is that the metal constraint sheet has a cooperatively designed non-uniform stiffness and mass distribution. The cross section of the metal constraint sheet is a stepped profile formed by alternately connecting a plurality of web segments and wing plate segments, the length of the web segments is made to change in a gradient manner, so that a preset stiffness gradient distribution along a specific direction is realized; meanwhile, an opening array is formed on each plate segment constituting the stepped profile as a whole, so that a preset mass distribution is realized. Through the cooperative design, the structure can couple multiple high-frequency vibration modes such as bending and torsion of the mirror, and efficiently dissipate energy. The application effectively solves the image jitter and blur problems caused by mirror vibration in a vehicle-mounted head-up display system by using a light-weight and small-sized structure.

The application discloses a two-dimensional white light microscopic splicing interferometer measuring device and method, and belongs to the technical field of precise optical detection. The device comprises a base platform, vertical motion tables arranged on both sides of the base platform, a non-Schlieren interferometer and a white light profiler respectively carried by the vertical motion tables, an X-direction linear guide rail, and a large-scale rotary table assembly and a small-scale rotary table assembly arranged on the X-direction linear guide rail. The method uses the white light profiler and the non-Schlieren interferometer in cooperation, acquires the relative angle difference between sub-apertures in real time, adopts a dynamic angle compensation mechanism, and combines a specific splicing algorithm to realize high-precision fusion of surface shape data. The application effectively solves the angle error accumulation problem in sub-aperture splicing measurement of a small curvature radius curved mirror, realizes sub-nanometer level surface shape measurement precision, and is particularly suitable for high-precision detection of an X-ray curved mirror.

The invention discloses a production process of a 6-degree free ring curved surface lens, which is based on precise optometry, takes digital modeling as a core, realizes precise recarving of design through vacuum forming, combines surface strengthening and strict quality control, and improves the production efficiency of the 6-degree free ring curved surface lens. And finally, the high-quality lens with high-definition imaging, wide visual field and light and thin appearance is produced.

The application discloses a zoom laser illuminator of an elliptical light spot, which comprises a rear fixed group, a compensation group, a zoom group and a front fixed group which are sequentially arranged along an optical axis from an optical fiber end face outward, the front fixed group is provided with a non-rotationally symmetrical mirror group, the non-rotationally symmetrical mirror group is provided with a cylindrical type double quadratic surface mirror, and the control of a light spot aspect ratio is realized. According to the application, a specific relationship is met at any zoom position, the illumination light spot is ensured to be an ellipse with a ratio of major axis to minor axis of 16:9, and the ratio of major axis to minor axis of the light spot is unchanged at any illumination angle. The illuminator realizes the change of focal length by moving the internal mirror group along the optical axis direction, and the image plane position is basically unchanged during the zooming process. The lens with the double quadratic surface type is used to realize the control of the meridian and sagittal direction focal length. The laser illuminator disclosed by the application can emit an elliptical light spot, has the zoom function, the ratio of major axis to minor axis of the light spot is unchanged during the change of the illumination angle, and can be matched with a zoom lens.

Disclosed are a fixed-focus projection optical system and a projection device. The fixed-focus projection optical system is provided with an object side and an image side arranged relatively along an optical axis direction, and includes: a micro-mirror array, an equivalent prism, a galvanometer, a first lens group, a second lens group, a plane mirror, and a curved mirror provided in sequence from the object side to the image side. The plane mirror is provided at one side of the optical axis, and the curved mirror is provided at the other side of the optical axis. The plane mirror is provided at an angle with the optical axis, and one end of the plane mirror is intersected with the optical axis.

The utility model relates to a kind of light inlet assembly and lens module, including upper cover, light inlet cover, pedestal, curved mirror and plane mirror, the upper cover and the pedestal are respectively arranged at the both ends of the light inlet cover, to form reflection cavity by surrounding, the plane mirror and the curved mirror are located in the reflection cavity, the plane mirror is installed on the upper cover, the curved mirror is installed on the pedestal, the curved mirror is provided with the avoidance mouth in the middle, the pedestal is provided with light outlet, the light outlet is located at the avoidance mouth, the curved mirror and the plane mirror cooperate, to the light of the light inlet cover place incidence reflection to the light outlet;The light inlet assembly further includes first elastic member, the first elastic member is extruded between the upper cover and the light inlet cover.

A display system is provided. The display system includes a picture generation unit, a diffuser screen, and a curved mirror. The picture generation unit is configured to generate a real image and perform imaging on the diffuser screen. The diffuser screen is configured to perform diffuse reflection on the real image. The curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image.