184 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.

The invention provides a head-up display system and a vehicle, and belongs to the technical field of optics. The head-up display system comprises an image source, a first plane lens, a second plane lens and a free-form mirror. The image source includes a first display area and a second display area. The first plane lens is located on an emergent light path of the first display area, and the second plane lens is located on an emergent light path of the second display area. The optical path of light emitted by the first display area on the first plane lens is different from the optical path of light emitted by the second display area on the second plane lens. The free-form mirror is located on transmission light paths of the first plane lens and the second plane lens. Because the optical path of the light in the first plane lens is different from the optical path of the light in the second plane lens, the equivalent object distances of the first display area and the second display area are different, and the virtual image distances of two focal planes corresponding to the first display area and the second display area are different. Therefore, the head-up display system can generate two focal planes with different virtual image distances.

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.

The invention provides a lens integrated structure, a panoramic camera and an image processing method, which can eliminate a central blind area and improve the pixel utilization rate. The lens integrated structure comprises a mounting seat; the optical lens is arranged on the mounting seat; the light-transmitting cover comprises an annular cover body which is fixedly arranged on the mounting seat and is arranged around the optical lens and a front cover body which is fixedly connected with the annular cover body; the refraction and reflection element is fixedly arranged on the rear side of the front cover body, and the refraction and reflection element is provided with a refraction area located in front of the optical lens and a reflection area arranged around the refraction area; and the curved surface reflecting mirror is fixedly connected to the mounting seat, and the curved surface reflecting mirror is provided with a light window located in a light path between the refraction and reflection element and the optical lens and an annular reflecting curved surface located around the light window and back to the optical lens.

The invention relates to the field of lens testing, in particular to wear resistance testing equipment for a glass lens. The invention discloses wear resistance testing equipment for a glass lens. The wear resistance testing equipment comprises a bottom frame, a lifting unit, a protective cylinder, a switching unit, a friction head and the like, the underframe is connected with a lifting unit; the lifting unit is connected with a plurality of protective cylinders; each protective cylinder corresponds to one rubber head; each protective cylinder is connected with a switching unit; each switching unit is connected with a friction head; the upper face and the lower face of the friction head are respectively a convex face and a concave face and are both rough faces. A lens body is pneumatically adsorbed and fixed through a rubber head, a plane / curved lens self-adaptive test is realized in cooperation with a turnover friction head, and by combining the anti-pollution design of a protective cylinder and precise abrasive spraying of a diaphragm electric nozzle, multi-working-condition intelligent rapid switching is realized while the singleness of the test condition is ensured, and the test efficiency is improved. The lens wear resistance test efficiency and the data accuracy are obviously improved.

A projection apparatus, a display device, a transportation means, and a projection method are provided. A picture generation unit in the projection apparatus emits a polarized light beam to a reflective polarizer, and the polarized light beam passes through the reflective polarizer, which selectively transmits light in different polarization states. The polarized light beam via the reflective polarizer is transmitted through a first polarization converter to change a polarization state, is transmitted through the first polarization converter again after being reflected by a curved mirror to change the polarization state, and passes through the reflective polarizer. The polarized light beam via the reflective polarizer twice has different polarization states. The projection apparatus may selectively process the polarized light beam. Space may be reused by an optical path, so that an inner structure of the projection apparatus is compact.

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 invention discloses a dual-imaging vehicle-mounted display device and a control method, and belongs to the field of vehicle-mounted display, a light sensor is mounted on a front windshield to detect the light intensity of ambient light, and a controller judges a currently required imaging mode according to light intensity data; when holographic film imaging is needed, the winding driving part drives the reel to rotate, the holographic film extends out and is unfolded to be attached to a front windshield, the deflection driving part drives the micromirror array to deflect, and light emitted by the image source is guided to the holographic film through the micromirror array to achieve imaging. When the free-form surface mirror is needed for imaging, the winding driving part drives the reel to rotate reversely, the holographic film is wound on the reel, the deflection driving part drives the micro-mirror array to deflect reversely, light emitted by the image source is reflected to the free-form surface mirror through the micro-mirror array, and the free-form surface mirror transmits the light to a front windshield for imaging. The projection area is greatly expanded to more than 20 inches, the field of view (FOV) is improved to more than 15 degrees * 5 degrees, and the virtual image distance is more than 20 m.

The invention relates to a myopia prevention and control passive far image imaging read-write device applied to the technical field of optical images, through the arrangement of a reading monitoring unit, the continuous reading time of a reader can be monitored, and when long-time continuous reading occurs, the four edges of a curved mirror can be controlled to present a sequentially fluctuating floating state, so that the reading accuracy is improved. The optical path is changed continuously, so that the reading material image formed on the imaging panel is changed physically continuously, a reader can rest in time, the situation of continuous reading is effectively avoided, and compared with the prior art, the effect of preventing myopia is further improved; in addition, in cooperation with the arrangement of the curved mirror monitoring unit, the position of the floating curved mirror can be monitored, the curved mirror can be recovered to the initial state conveniently, it is effectively guaranteed that the reading material image is recovered to be normal, and reading is facilitated again.

The invention provides a high-reflection film applying a vehicle-mounted HUD free-form surface mirror and a preparation method of the high-reflection film, the high-reflection film is sequentially provided with a base material layer, a transition layer, a metal reflection layer, a reflection increasing protection layer and an anti-fingerprint hydrophobic layer from inside to outside, the base material layer is used for forming a curved surface contour in the vehicle-mounted HUD free-form surface mirror; the transition layer is used for improving the adhesive force between the metal reflecting layer and the base material layer; the metal reflecting layer is used for reflecting a real image; the reflection increasing protection layer is used for increasing the reflectivity and protecting the metal reflection layer, and the reflection increasing protection layer comprises a first low-refractive-index layer, n pairs of refractive-index combination layers and a third low-refractive-index layer; the refractive index combination layer is formed by alternately stacking a first high refractive index layer and a second low refractive index layer; and the anti-fingerprint hydrophobic layer is used for realizing the dissociation of fingerprint grease and is arranged on the outermost side of the reflection-increasing protective layer. Therefore, the reflectivity and the reliability of the reflecting film are improved.

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 application provides a point cloud registration method, a gradual forming mirror surface compensation method and system, acquires two point cloud data to be registered; after extracting edge points of the point cloud by using a PCA method, edge planes of reference point cloud and registered point cloud are fitted by using the edge points; a rotation matrix between normal vectors of the two edge planes is calculated, so that the normal vector of the edge plane of the registered point cloud is aligned to the normal vector of the edge plane of the reference point cloud; the convex hull directions of the reference point cloud and the registered point cloud are aligned; fine alignment is performed, so that the Euclidean distance between the edge points of the two point clouds is minimized. Based on the mirror principle, robot machining error compensation is carried out, the point cloud of the actual machining surface is measured by using a scanner, the target surface is regarded as a mirror surface, and the actual machining surface is mirrored to the other side through the target surface, so that the compensation surface is obtained, and the geometric precision of the formed part is improved.

The invention provides a miniaturized single-beam multi-reflection atom magnetometer probe. The miniaturized single-beam multi-reflection atom magnetometer probe comprises a prism assembly, an alkali metal atom gas chamber and a second curved surface reflector. The prism assembly converts incident light into circularly polarized light and comprises a first optical surface for receiving the incident light and a second optical surface for emitting the circularly polarized light. The alkali metal atom gas chamber is arranged opposite to the second optical surface, the second curved surface reflector is arranged on one side, back to the second optical surface, of the alkali metal atom gas chamber, and the second curved surface reflector reflects circularly polarized light penetrating through the alkali metal atom gas chamber back to the alkali metal atom gas chamber. The second optical surface reflects the circularly polarized light emitted to the second optical surface from the alkali metal atom gas cell to the alkali metal atom gas cell. According to the invention, circularly polarized light can repeatedly pass through the alkali metal atom gas chamber, atoms are polarized for multiple times, the number of atoms is equivalently increased in a limited area, the ultimate sensitivity of the atom magnetometer probe is improved, and miniaturization and integration of the atom magnetometer probe are realized.

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 present application relates to the technical fields of optical element processing, and discloses a supporting frame for cutting a multi-curved mirror, which comprises a supporting base and an extendable supporting pipe; the extendable supporting pipe is installed at the inner bottom of the supporting base, and the top of the extendable supporting pipe is provided with a curved supporting plate; a heat-conducting air bag is arranged on the curved supporting plate, and the heat-conducting air bag supports and adheres to the bottom of the mirror; the heat-conducting air bag and a plurality of connecting clamps jointly position and clamp the mirror; the heat-conducting air bag adhering to the bottom conducts the temperature of the mirror, thereby conducting the heat of the mirror in the laser cutting. Through the cooperative clamping and positioning, the extendable push rods in the annular array drive the connecting clamps to clamp the edge of the mirror from the circumference, thereby providing radial constraint; the extendable supporting pipe jacks up the heat-conducting air bag, so that the heat-conducting air bag adheres to the curved bottom of the mirror, thereby providing axial support; the circumferential clamp and the bottom air bag cooperatively realize the spatial positioning of the mirror, and the active heat-conducting function reduces the risk of thermal damage.

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.

To increase the angle of view while avoiding an increase in the size of the entire optical system.SOLUTION: Virtual image display devices 100A, 100B each include: an illumination device 10a; a projection optical system 12 that forms illumination light IL emitted from the illumination device 10a into an image; a transmission type imager 22 that is arranged at an image formation position of the illumination light IL, and forms video light ML corresponding to the illumination light IL; an inclined curved surface mirror 14 that selectively reflects the illumination light IL from the projection optical system 12 toward the transmission type imager 22; and a polarizing lens 50 that is arranged on a face side of the transmission type imager 22 and the inclined curved surface mirror 14, and has a refractive power selectively acting on polarized light of the video light ML.SELECTED DRAWING: Figure 2

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.