276 results about "Curved mirror" patented technology

The invention relates to the technical field of head-up display, in particular to an HUD optical aberration correction method, system and device and a vehicle. The correction method comprises the following steps: generating a light beam through an LED light source or a laser light source, and adjusting the brightness and color parameters of the LED light source or the laser light source through a control circuit so as to adapt to different display requirements and environmental conditions; and the light beam is preliminarily shaped and collimated by the light beam shaping element until a proper divergence angle and a proper light spot size are met so as to meet the requirements of a coupling element. According to the invention, the light beam emitted by the light machine is subjected to one-dimensional or two-dimensional pupil expansion through the optical waveguide, and then view field expansion and aberration correction are carried out through the free-form surface mirror, so that the problems of large size, limited view field angle, small eye box range and insufficient imaging definition in the prior art are effectively solved.

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 belongs to the technical field of optical lens machining equipment, and particularly relates to optical lens arc-shaped mirror wall machining equipment which comprises a bottom plate, limiting plates are symmetrically and slidably mounted on the bottom plate, two rotating discs are rotatably mounted between the two limiting plates, and the sides, away from each other, of the two rotating discs penetrate through the two limiting plates and extend into the limiting plates correspondingly; first cylinders are fixedly mounted on the sides, close to each other, of the two rotating discs, sliding shafts are arranged at the ends, close to each other, of the two first cylinders, C-shaped plates are fixedly mounted at the ends, close to each other, of the two sliding shafts, and the ends, away from each other, of the two sliding shafts penetrate through the first cylinders, extend into the first cylinders and are provided with springs. By means of the clamping device, lenses with different thicknesses can be clamped, the situation that the lenses are prone to loosening or deformation in the machining process is avoided, the machining precision and the lens quality are greatly improved, when the two faces of each lens need to be polished, manual overturning by workers is not needed, the situation that the surfaces of the lenses are scratched is reduced, and the working efficiency of the workers is improved.

The utility model relates to the technical field of vehicles, and provides a head-up display system and a vehicle, the head-up display system may comprise: an image generation unit, a free-form mirror, a first reflector and a second reflector, the image generation unit emits a first light beam and a second light beam, the first light beam is used for forming a near-projection virtual image, and the second light beam is used for forming a near-projection virtual image; the second light beam is used for forming a far projection virtual image; the free-form surface mirror is rotatably arranged between the image generation unit and the vehicle window, and reflects the first light beam and the second light beam to the vehicle window; the first reflecting mirror is rotatably arranged between the image generating unit and the free-form surface mirror, and the first reflecting mirror reflects the first light beam to the free-form surface mirror; on the propagation path of the second light beam, the second reflecting mirror is rotatably arranged between the image generation unit and the free-form surface mirror, and the second reflecting mirror is used for reflecting the second light beam to the free-form surface mirror. According to the head-up display system provided by the embodiment of the invention, the far projection virtual image and the near projection virtual image can be respectively controlled.

The invention relates to the technical field of panoramic morphology and deformation measurement, and particularly discloses a multi-view digital image correlation measurement method based on a mirror-assisted full surface, and the method comprises the steps: arranging and configuring a novel mirror-assisted multi-view digital image system of an optical structure; samples and calibration image pairs of a tested sample in a mirror surface and a prism before and after deformation are collected based on a system, system imaging parameters are calibrated based on the calibration image pairs, and a virtual curved surface, the three-dimensional shape of the mirror surface and three-dimensional coordinates of a real point and a virtual point of a calibration plate are reconstructed. And calculating the reconstructed data points to obtain a reflection transformation matrix of the mirror surface and the prism pair, and reflecting the virtual surface to a corresponding real position based on the matrix to obtain the panoramic contour of the tested sample in the initial and deformation states. And synchronous high-definition images of samples at different field depths can be obtained, and dynamic high-precision three-dimensional deformation and contour measurement of object parts in different field depth ranges can be realized.

The utility model discloses lens film pasting equipment which comprises a machine frame, a film tearing, feeding and discharging device and a forming and pasting device are arranged on the machine frame, the lens film pasting equipment further comprises a press-fit feeding and discharging device, and a material transferring assembly is arranged at the output position of the film tearing, feeding and discharging device. A preforming device is further arranged in the path where the material transferring assembly transfers the optical film to the press-fit feeding and discharging device, a lens feeding carrying table and a finished product discharging carrying table are further arranged on the rack, and the forming and attaching device comprises a forming and attaching heating assembly for heating the optical film. According to the utility model, before the lens and the optical film are laminated, the optical film is heated through the molding lamination heating assembly, so that the optical film has certain flexibility, and the optical film and the lens body can be laminated more tightly during vacuum lamination, thereby being capable of adapting to a curved lens with a larger curvature, reducing wrinkles and improving the production efficiency. And moreover, the generation of bubbles and hollow areas can be effectively reduced by laminating in a vacuum environment.

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 printing optical element, a printing method and a far-image optical instrument, and relates to the technical field of far-image optics, the printing optical element comprises a substrate and a patterning layer, the substrate is transparent, and a printing area is arranged on the first side of the substrate; the patterned layer is located in the printing area and comprises a plurality of function parts protruding from the surface of the substrate, and the function parts are formed through UV printing and distributed in a geometric array mode. Wherein the function part is semitransparent and is in a continuous columnar form; the functional part is reflected by the free-form surface mirror to be imaged to an imaging panel of the far-image optical instrument and presents a first imaging surface; and the first imaging surface and a second imaging surface of the far-image optical instrument for amplifying and presenting the object are distributed at an interval. When a user watches magnified information on the second imaging surface, the focal length can be actively adjusted to switch focusing between the first imaging surface and the second imaging surface, so that eyestrain is relieved, and the effect of adjusting crystalline lenses of eyes to prevent and control myopia is achieved.

A fundus imaging device includes two or more curved mirrors, an illumination optical system, an image sensor, and a control unit. The illumination optical system irradiates slit-shaped illumination light to the fundus of an eye to be examined by means of two or more curved mirrors, and illuminates the fundus while moving an illumination region. The image sensor can be disposed at a fundus conjugate position substantially optically conjugate to the fundus, and receives return light from the subject eye. The control unit controls at least the illumination optical system. The longitudinal direction of an image formed by the illumination light at the fundus is substantially parallel to a plane including two or more focal points of the two or more curved mirrors. The control unit controls the illumination optical system so that the image moves in a direction intersecting the longitudinal direction at the fundus.

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.

Disclosed in the present invention is a single-display binocular diopter-adjustable near-eye display system, comprising a display, a beam splitter prism, a first imaging display unit, and a second imaging display unit. The display is used for emitting imaging light and moving relative to the beam splitter prism to achieve diopter adjustment. The beam splitter prism is for splitting the imaging light emitted from the display into two paths to be incident on the imaging display units in a one-to-one correspondence manner. The imaging display units have one-to-one correspondence to human eyes, and each comprise a first imaging lens unit, a planar reflector, and a curved mirror, wherein the planar reflector is inclined relative to an optical axis of the first imaging lens unit, the mirror surface of the curved mirror away from the human eyes is coated with a light splitting film, and the mirror surface of the curved mirror close to the human eyes is coated with an anti-reflection film. According to the system, binocular viewing is achieved using a single display, helping to reduce the costs, achieve miniaturization and light weight, and achieve a larger eyebox range and field of view angle; in addition, the imaging quality is excellent, and the requirements of people with different vision can be met.

The invention belongs to the field of eye protection, and provides a curved mirror imaging eye protection device which comprises a shell, an observation window is formed in the front end of the shell, a refraction window is formed in the bottom of the shell, a base is connected to the edge of the bottom of the shell, first lamp strips are installed on the two sides of the bottom of the base, and second lamp strips are connected to the two ends of the bottom of the base. Bolt seats are mounted at the top and the bottom of the rear end of the shell; the lens supporting mechanism is installed in the shell, and a bevel lens is installed in the lens supporting mechanism in an inclined mode. By means of the closed design, foreign matter can be effectively prevented from damaging the curved mirror, imaging stability of the curved mirror is guaranteed, the situation that the curved mirror is exposed outside to be polluted, so that the mirror surface is stained, and the mirror surface is stained and scratched is avoided, meanwhile, a certain angle is kept between the bevel lens, the curved mirror and the bevel light splitting refractor, and the service life of the curved mirror is prolonged. And the imaging effect of the device 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.

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.

A fundus imaging apparatus includes two or more curved mirrors, an illumination optical system, an image sensor, and a controller. The illumination optical system irradiates slit-shaped illumination light onto a fundus of an eye to be examined through the two or more curved mirrors, and illuminates the fundus while moving an illumination region. The image sensor is arrangeable at a fundus conjugate position substantially conjugate optically to the fundus, and receives returning light from the eye to be examined. The controller controls at least the illumination optical system. A longitudinal direction of an image formed by the illumination light on the fundus is approximately parallel to a plane including two or more focal points of the two or more curved mirrors. The controller controls the illumination optical system so that the image described above moves in a direction intersecting the longitudinal direction on the fundus.

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 invention relates to the technical field of photoetching equipment, and discloses a PCB single-sided photoetching light path structure adopting a displaceable UV-LED lamp source module, which comprises a lamp source switching module, and a compound eye front collimating lens group, a light equalizing module and a curved mirror are sequentially arranged on one side of the lamp source switching module. A multi-band UV-LED multi-lamp module and a single-band UV-LED multi-lamp module which are driven by the light source switching module are arranged on the side, located on the compound eye front collimating lens set, of the light source switching module, a movable transparent photoetching workbench is arranged on the side, reflecting light, of the curved mirror, and the movable transparent photoetching workbench comprises a first face and a second face which are opposite to each other. And a PCB (Printed Circuit Board) fixing structure is arranged on the first surface or the second surface of the displaceable transparent photoetching workbench. Different light sources can be selected, the applicability is high, the cost is low, and the use requirements of small enterprises or research and development institutions can be effectively met.

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 utility model belongs to the field of optical imaging, and particularly relates to a far-image imaging system, which comprises a light source serving as a light source of the far-image imaging system; the spectroscope is arranged opposite to the light source, light emitted by the light source enters the spectroscope to form a first effective light path and a first ineffective light path, and the light is reflected by the spectroscope to form the first effective light path; the curved reflector is arranged opposite to the spectroscope, the curved reflector comprises a substrate layer and a reflecting layer, the substrate layer is arranged at the bottom of the curved reflector, the reflecting layer is arranged on the substrate layer, the thickness of the substrate layer is larger than that of the reflecting layer, and light of the first effective light path enters the curved reflector, is reflected and then exits towards the spectroscope. Light rays are transmitted through the light splitting film to form the second effective light path, a first image with the preset focal plane depth is formed at the watching position, and the preset distance is larger than 1 m.

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.