116 results about "Projection lens" patented technology

A technology capable of suitably correcting a geometric distortion caused by a shape of a curved surface of a screen or the like and obtaining a suitable image easily viewable for a user is provided. A projector is an image display apparatus configured to project an image onto a screen and includes a projection lens arranged at a first position and a camera arranged at a second position. When the screen has a curved surface, a camera image obtained by capturing a first image projected on the screen by the camera is acquired, and a geometric transformation for correcting a geometric distortion caused by the curved surface seen from a first virtual viewpoint position (virtual viewpoint) is performed for an image to be displayed based on information of the camera image, the first position, and the second position, and a post-transformation image is projected onto the screen.

This invention relates to the field of semiconductor lithography error correction technology, specifically a lithography machine error correction method and system. The method includes: deploying an interferometric sampling array to capture the initial wavefront phase distribution to obtain a reference wavefront field; using a thermal drift separation operator to remove the slowly varying drift component caused by environmental thermal effects; and using multidimensional convolution matching between the residual wavefront field and a nominal lens aberration feature library to identify static aberration patterns, generating an inverse aberration compensation driving signal. A time-varying trend predictor based on a Kalman filter framework is used to continuously estimate future thermal drift, which is then superimposed with the inverse aberration compensation driving signal to synthesize a composite correction instruction set. Based on this instruction set, the workpiece stage positioning system and the projection lens focusing system are jointly kinematically adjusted to offset the overlay error jointly introduced by aberrations and thermal deformation. This method can separate the thermal drift component, improve aberration recognition accuracy, and achieve feedforward thermal drift correction and dual-system coordinated adjustment.

This application relates to a display device, comprising: a display including a first display unit and a second display unit, the first display unit being used to emit a first light ray, and the second display unit being used to emit a second light ray, the first light ray and the second light ray having different wavelengths; a meta-optical structure including a first dimming unit and a second dimming unit, the first dimming unit being located in the optical path of the first light ray, the second dimming unit being located in the optical path of the second light ray, the first dimming unit being used to control the transmission direction of the first light ray and the second dimming unit being used to control the transmission direction of the second light ray, so that the first light ray is emitted from the meta-optical structure at an angle different from that of the second light ray; a projection lens being used to receive the first light ray and the second light ray emitted from the meta-optical structure, and the first light ray being emitted at an angle different from that of the second light ray; and an optical waveguide being used to receive the first light ray and the second light ray emitted from the projection lens, wherein the first light ray is incident on the optical waveguide at an incident angle that is not parallel to that of the second light ray.

This invention provides a projection lens. The projection lens includes a lens group comprising at least eight lenses, which, from a first side to a second side, are sequentially: a first lens with negative optical power, a second lens with negative optical power, a third lens with positive optical power, a fourth lens with negative optical power, a fifth lens with positive optical power, a sixth lens with optical power, a seventh lens with optical power, and an eighth lens with optical power. At least one group of lenses from the fourth to the eighth lens is cemented together to form a cemented doublet lens or a cemented triplet lens. The ratio between the combined focal length of the cemented doublet lens and the focal length of the second lens group is greater than or equal to 1 and less than or equal to 8; or, the ratio between the focal length of the cemented triplet lens and the focal length of the second lens group is greater than or equal to 0 and less than or equal to 14. This invention solves the problem in existing projection lenses where it is difficult to simultaneously achieve both high-quality projection and miniaturization.

This invention discloses a projection lens and projection system, including an aperture stop, a front group of lenses and a rear group of lenses located on either side of the aperture stop. A diffractive lens is disposed in the rear group of lenses. The diffractive lens includes a lens substrate, one side surface of which has a first diffraction structure, a first coating covering the first diffraction structure, and a second diffraction structure on the side surface of the first coating facing away from the lens substrate, with a second coating covering the second diffraction structure. By introducing a diffractive lens into the projection lens, and the diffractive lens having a double-layer diffraction surface, the system can maintain a high diffraction efficiency through the mutual matching of refractive indices, while simultaneously utilizing the negative chromatic aberration characteristics of the diffraction surface to complement the positive chromatic aberration of the lens's refractive surface. This significantly reduces chromatic aberration in the optical system and overcomes the problem of red and blue fringing in projected text. The introduction of the diffractive lens also provides more optimization freedom for the entire optical system, thereby achieving a small size and high performance for the projection lens.

A vehicle lamp includes a light source, a projection lens disposed on a vehicle front side of the light source, a light-blocking member disposed between the light source and the projection lens for forming a cutoff line within a light distribution pattern, and a reflector for reflecting light from the light source toward the projection lens side, the projection lens having a belt-shaped region (9) extending in a vehicle width direction provided on an incident surface thereof, and a plurality of prisms (23) provided in a row within the belt-shaped region, the plurality of prisms (23) being composed of two or more prisms (23) having different radii of curvature in a length direction of the belt-shaped region.

This invention provides a five-element glass lens for automotive headlight projection, belonging to the field of automotive lighting technology. The five-element glass lens comprises a first positive biconvex lens, a negative biconcave lens, a first positive meniscus lens, a second positive biconvex lens, and a second positive meniscus lens, arranged sequentially along the optical axis from the object plane to the image plane. The image plane side surface of the first positive meniscus lens is convex, and the object plane side surface is concave. Similarly, the object plane side surface of the second positive meniscus lens is convex, and the image plane side surface is concave. This invention's automotive headlight projection lens features a large relative aperture, high transmittance, low distortion, and strong high and low temperature stability, meeting the dual requirements of illumination and imaging in automotive projection headlights.

The vehicle lighting fixture includes: multiple light sources that emit light respectively; a light shield having multiple through holes through which light emitted from the multiple light sources passes; and a projection lens having multiple lens portions, into which light passing through the through holes is incident, and which emits light for drawing towards the road surface. The projection lens has at least three lens portions, and includes a near lens portion that emits light towards the position closest to the vehicle and a far lens portion that emits light towards the position farthest from the vehicle. The far lens portion is located at the bottom, and at least two other lens portions are arranged side by side on the upper side of the far lens portion.

The application discloses a projection lens additional lens group suitable for multiple scenes and a fixing device thereof, and relates to the technical field of optical imaging lenses. The fixing device comprises a flange base and a fixing lens group. The fixing lens group is installed above the flange base. The fixing device further comprises an additional lens group. The additional lens group is arranged in the flange base. An optical element module for realizing focal length adjustment, aberration correction and projection range expansion is arranged in the additional lens group. The application breaks the original design idea of the lens and adopts a two-section grouping design scheme, i.e. the idea of combining the fixing lens group with multiple specifications of the additional lens group, so that the requirement of multiple scene applications is realized. The application expands the diversity of application scenes by adopting the additional lens group. The additional lens group can expand the field of view, focal length, brightness, picture width and other different functions, so that the multiple scene application optimization of the lens is realized at a low cost and simple assembly.

The present invention relates to a lighting module (2) for a motor vehicle, comprising: a first lighting submodule (5) including a light source (6.3) capable of forming a first light beam; a second lighting submodule (10) capable of forming a second light beam; a second projection lens (12) for projecting the second light beam and adjacent to the first projection lens (8); and an optical device (18) configured to redirect light rays from the light source (6.3) directly from the first lighting submodule (5) and passing in front of the reflective surface (6.2) of the first lighting submodule (5) to the second projection lens (12) so that the second projection lens (12) appears to be illuminated even when the second lighting submodule (10) is turned off.

The application protects a projection system, comprising: a light source module comprising a plurality of light source modules, for emitting a first light beam, a second light beam and a third light beam; a liquid crystal modulation module comprising a plurality of liquid crystal modulation modules, arranged on the light path of the light source module, for modulating the first light beam, the second light beam and the third light beam into a first image light, a second image light and a third image light; a light combination module arranged on the light path of the plurality of liquid crystal modulation modules, for combining the first image light, the second image light and the third image light to generate a color image light; a light beam convergence assembly arranged between the light source module and the light combination module, for converging or partially converging the light beam to achieve non-telecentric illumination; and a projection lens arranged on the light path of the light combination module, for imaging the image light to display an image; wherein the plurality of liquid crystal modulation modules and the light combination module adopt short-side light combination to reduce the back aperture of the lens, thereby reducing the volume of the projection system.

A microlithography projection exposure apparatus (10, 80) includes a projection lens (26) for projecting the structure of a mask (12) onto a substrate plane (30) by exposure radiation (18), wherein at least one optical element (38, 40, 82) of the projection lens (26) is equipped with a manipulator (M4, M5) configured to selectively input thermal energy into the optical element (38, 40, 82) without significantly heating one of the other optical elements of the projection lens in the process. The projection exposure apparatus (10, 80) further includes a control device (56) configured to control the exposure radiation (18) and to control the manipulator (M4, M5) such that the effect on the optical properties of the projection lens caused by the reduction of thermal energy input to the projection lens (26) due to exposure pauses is at least partially compensated by the energy input of the manipulator (M4, M5). Furthermore, the present invention relates to a corresponding method for controlling the microlithography projection exposure apparatus (10, 80).

A display apparatus includes a first micro-display configured to emit a first light beam; a first meta-optical structure configured to adjust a propagation direction of the first light beam; a second micro-display configured to emit a second light beam, and a wavelength of the first light beam is different from a wavelength of the second light beam; a light combining element including a light exit surface, and the light combining element being configured to transmit the first light beam and the second light beam through the light exit surface; a projection lens configured to receive the first light beam and the second light beam from the light exit surface; and an optical waveguide configured to receive the first light beam and the second light beam from the projection lens, wherein the projection lens project the first light beam and the second light beam to the optical waveguide in different directions.

A display for displaying an image comprises a condenser lens array having a plurality of condenser lenses; a projection lens array having a plurality of projection lenses; a plurality of optical channels which each comprise at least one condenser lens and one projection lens and are configured for projecting the image to be displayed by means of the display; and a plurality of collecting lenses arranged between optical paths of adjacent condenser lenses. A respective collecting lens is configured for collecting incident light and steering it to regions outside the projection lenses.

The utility model discloses a LCD projection structure with aspheric reflector, which comprises an LCD screen, a Fresnel lens, a projection lens and an aspheric reflector. The LCD screen is arranged on the front side of the Fresnel lens, the projection lens is arranged on the back side of the Fresnel lens, and the aspheric reflector is arranged between the Fresnel lens and the projection lens or on the back side of the projection lens. The aspheric reflector is arranged between the Fresnel lens and the projection lens or on the back side of the projection lens. The structure design utilizes the reflection characteristics of the aspheric reflector to change the propagation path of light, provides sufficient optimization freedom for the projection lens, and makes the projection lens not need to spend energy to deal with the optical correction problem. Therefore, all optimization resources can be concentrated on the improvement of picture quality and depth of field, so as to improve the quality of the projection picture.

This application provides a method, apparatus, device, and medium for detecting polarization aberration in a projection lens. The method includes: sequentially arranging a polarization state generator, a projection lens, a polarization state analyzer, and a detector along the optical path propagation direction to establish a Mueller matrix model corresponding to the projection lens; determining the projection lens Mueller matrix under the characteristic parameters of each component based on the Mueller matrix model; and for each characteristic parameter, changing its value within a preset parameter range based on the Mueller matrix model, while keeping other characteristic parameters at preset values, and calculating the detection deviation of each element in the projection lens Mueller matrix under the current conditions. This method and apparatus significantly improve the accuracy and reliability of polarization aberration detection.

The invention relates to a vehicle headlamp (1) comprising a low beam module (2) for generating a low beam distribution, wherein the low beam module (2) for this comprises at least one light source (2a), and a high beam module (3) for generating a high beam distribution, wherein the high beam module (3) for this comprises at least one light source (3a), a projection lens (4), and a ray shield (5), wherein the two light modules (2, 3) are associated with the projection lens (4) as a common projection lens (4) and with the ray shield (3) as a common ray shield (3) in such a way that the light sources (2a, 3a) are arranged respectively such that the common ray shield (5) is in the light path from the respective light source towards the common projection lens (4) in order to delimit the light distribution respectively radiated into the common projection lens (4), and the common projection lens (4) is arranged in the light path of the two light modules (2, 3) such that the light rays radiated by the light modules (2, 3) that pass through the common ray shield (5) can be imaged by the common projection lens (4) in the form of an additive light distribution onto the carriageway, wherein the common projection lens (4) has an optical axis (z), wherein the common projection lens (4) at its exit side (4') has a first deflection section (4a) extending upwards and downwards along the periphery of the projection lens transversely to the optical axis (z), which is arranged at the surface of the projection lens (4), wherein in this first deflection section (4a) the exit side (4') of the common projection lens (4) is configured by juxtaposed projections (6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h), which are respectively delimited by the connection of a first side face (6a') facing the optical axis (z) and a second side face (6a") facing away from the optical axis (z), wherein the totality of the projections comprises at least projections (6a, 6b, 6e, 6f, 6g, 6h) of a first type in which these side faces are configured substantially asymmetrically with respect to one another.

A projection lens includes a first optical lens group and a second optical lens group. The first optical lens group transmits an image beam to the second optical lens group. The second optical lens group projects the image beam out of the projection lens. The second optical lens group includes first and second reflective elements and an optical component. The optical component is disposed between the first and second reflective elements. The optical component includes a light-transmitting area and a reflective area. The first reflective element reflects the image beam from the first optical lens group and transmits it to the light-transmitting area. The light-transmitting area allows the image beam from the first reflective element to pass through and be transmitted to the second reflective element. The second reflective element reflects the image beam from the light-transmitting area and transmits it to the reflective area. The reflective area reflects the image beam from the second reflective element. A projection device equipped with the projection lens is also provided. The projection lens and projection device of the present invention have a foldable optical path to reduce the size of the projection lens, simplifying the manufacturing difficulty of the projection lens while maintaining good optical quality.

This application relates to a display device, comprising: a first microdisplay for emitting a first light ray; a second microdisplay for emitting a second light ray, wherein the first light ray and the second light ray have different wavelengths; a light combining element having a light emitting surface located in the optical path of the first light ray and the second light ray, the light combining element receiving the first light ray and the second light ray and emitting them through the light emitting surface; a projection lens comprising a lens assembly and a meta-optical structure, the projection lens for receiving the first light ray and the second light ray emitted from the light emitting surface, the lens assembly for modulating the first light ray and the second light ray, and the meta-optical structure for controlling the transmission direction of the first light ray and the second light ray, such that the first light ray is emitted from the projection lens at an angle different from that of the second light ray; and an optical waveguide for receiving the first light ray and the second light ray, wherein the first light ray is incident on the optical waveguide at an incident angle not parallel to that of the second light ray.

This application discloses an LCOS optical system and an AR device, relating to the field of augmented reality technology. The LCOS optical system includes an illumination module and an imaging module disposed on the light-emitting side of the illumination module. The illumination module includes a light source, a first collimation module, and a light-uniforming element. The imaging module includes a beam splitter, an LCOS device, and a projection lens, with the first collimation module, the light-uniforming element, and the beam splitter arranged sequentially along the light-emitting direction of the light source. The light beam emitted from the light source is collimated by the first collimation module and uniformly irradiated by the light-uniforming element before entering the beam splitter. After passing through the beam splitter, it enters the LCOS device, where the LCOS device modulates the beam into image light carrying image information. This image light is then transmitted to the projection lens through the beam splitter to project an image. This LCOS optical system and AR device can reduce the illumination space, contributing to the miniaturization of the LCOS optical system and AR device.

A projection device includes an optical engine module, a projection lens module, a sensor and at least one processor is provided. The projection lens module is disposed on a transmission path of the image beam from the optical engine module and is configured to project the image beam out of the projection device. The projection lens module includes a projection lens and a lens adjustment module configured to adjust a position of the projection lens. The sensor is configured to sense an orientation status of the projection device. The at least one processor is coupled to the sensor and coupled to at least one of the optical engine module and the lens adjustment module. The at least one processor is configured to adjust a control signal provided to at least one of the optical engine module and the lens adjustment module according to the orientation status of the projection device.

The application discloses a kind of projection module based on microlens array, including field lens array, projection source, projection lens array, prism array, interval area is formed between prism array and projection lens array, prism array surface is divided into interval part and mirror surface part, interval part and mirror surface part are arranged at intervals and are communicated with each other through interval area, interval part is parallel with the surface of base one, mirror surface part forms a certain angle with the surface of base one;Prism array is divided into M layers along the direction of light propagation, M layer prism array uses different materials, and the contact interface of every two adjacent prism array forms alternately arranged interface area one, interface area two, interface area one corresponds interval part, and interface area two corresponds mirror surface part;Projection lens array is divided into N layers along the direction of light propagation, N layer projection lens array uses different materials, and in the two side face types of every layer projection lens array, at least one side face type is optical face type except plane.

The application discloses a projection device, and belongs to the technical field of projection. The projection device comprises a shell, a projector body, a first support and a second support. The shell has a containing cavity and a light outlet hole communicating with the containing cavity. The projector body is connected with the shell in the containing cavity, and the projector body has a projection lens, and the light outlet side of the projection lens faces the light outlet hole. The first support is fixedly connected with the shell at the light outlet hole. The second support is movably connected with the first support, and the side, which is away from the first support, of the second support is connected with the light outlet side of the projection lens. In the process that the projection lens moves relative to the shell, the second support is displaced relative to the first support in the radial direction and / or the axial direction of the light outlet hole. In this way, the second support can move in the radial direction and / or the axial direction along with the projection lens, the second support moves along with the projection lens relative to the first support, the resistance of the projection lens in movement can be obviously reduced, and the influence on the movement of the projection lens and the focusing process can be reduced.

This invention relates to the field of semiconductor technology, disclosing a Micro-QLED chip for a projection optical engine, its fabrication method, and a projection optical engine, aiming to replace expensive Micro-LED chips and solve the problem of lead-based quantum dot materials easily polluting the environment. The solution mainly includes: a Micro-QLED chip for a projection optical engine, its fabrication method, and a projection optical engine. The Micro-QLED chip, from bottom to top, includes: a substrate with transparent electrodes, a hole injection layer, a hole transport layer, a quantum dot emitting layer, an electron transport layer, and a TFT driving circuit board with metal electrodes; the quantum dot emitting layer is made of lead-free copper-based mixed halide perovskite quantum dot material; the projection optical engine includes a three-color Micro-QLED chip, a light-combining prism, and a projection lens. This invention reduces chip fabrication costs through improved processes, enhances chip luminous efficiency and color purity, and avoids environmental pollution caused by lead-containing materials, making it suitable for projection display products.

A display apparatus includes a first micro-display including a first display surface, a second micro-display including a second display surface, a light combining element including a light exit surface, a projection lens, and an optical waveguide. The first micro-display is used to emit a first light beam not perpendicular to the first display surface. The second micro-display is used to emit a second light beam not perpendicular to the second display surface, and the first light beam and the second light beam have different wavelengths. The light combining element is used to transmit the first light beam and the second light beam through the light exit surface. The projection lens is used to project the first light beam and the second light beam to the optical waveguide in directions not parallel to each other.

To provide a vehicle lighting fixture with a configuration for appropriate light diffusion. [Solution] The vehicle light fixture 1 of the present invention comprises a first lens 40 having an emission surface 41, and a projection lens 60 spaced apart in front of the first lens 40. The emission surface 41 includes a first emission surface 41A that emits light in the direction of a first optical axis AX1, and a second emission surface 41B that emits light in the direction of a second optical axis AX2 and is adjacent to the first emission surface 41A, with the second emission surface 41B being inclined toward the first emission surface 41A.

The application provides a meibomian gland visualizer, comprising a camera and a projector; the camera is provided with a connecting frame for fixation, and comprises a camera, a light and shadow processor, a core processing chip and a signal instant transmitter; after the camera takes an image, the image is subjected to color compensation and repair through the light and shadow processor, and then transmitted to the projector through the signal instant transmitter; the projector is provided with an adjusting frame for adjustment, and comprises a light source, an image display chip, a projection lens and a signal instant receiver; the signal instant receiver receives information of the signal instant transmitter and transmits the information to the image display chip; the image display chip instantaneously transmits the image to the outside through the light source and the projection lens; the application can directly project relevant influences, and treatment operation is performed through intuitive observation, thereby reducing the difficulty of massage caused by no visual field.