45 results about "Flat lens" patented technology

The invention discloses a super-resolution micro lens and a preparation method thereof. The lens comprises a photoresist spherical micro lens and a mixed substrate plane lens which are sequentially arranged from top to bottom. The specific preparation method comprises the following steps: S1, preparing a photoresist cylinder on a quartz substrate; s2, reflowing the photoresist cylinder into a micron lens by using a photoresist reflowing process; s3, preparing a mixed substrate plane lens on the surface of the to-be-detected sample; and S4, transferring the micron lens to the surface of the mixed substrate plane lens. By changing the thickness of the mixed substrate plane lens, adjustment of the amplification coefficient and the numerical aperture can be realized, and compared with a micro lens without a mixed substrate, the micro lens has higher imaging resolution. The method has a wide prospect in the technical field of optical imaging.

This application provides a soft flash structure and a mobile phone. The soft flash structure includes a soft light, a soft lens, and a light shield. The curved reflective lens section has an incident curved surface and a reflecting curved surface on opposite sides, both curved away from the planar lens section. The planar lens section has a reflecting plane on opposite sides, and the condensing lens section has a condensing reflecting surface and a light emitting surface on opposite sides. The incident curved surface, one reflecting plane, and the condensing reflecting surface are connected sequentially, as are the reflecting curved surface, the other reflecting plane, and the light emitting surface. The soft light, the curved reflective lens section, the planar lens section, and the condensing lens section are housed together within the light shield. The light emitted by the soft light is at least partially incident on the incident curved surface and reflected sequentially by the reflecting surface, the two reflecting planes, and the condensing reflecting surface, before exiting through the light emitting surface. The aforementioned soft flash structure can form a gradually softened light spot with better light uniformity.

This invention discloses an imaging device, comprising an imaging module and a mounting base. The imaging module includes a housing, a flat lens, a display, and a first slip ring. The flat lens has a first side and a second side, with the display located on the first side. Light emitted from the display passes through the flat lens on the second side to form a floating real image. The first slip ring is located at the bottom of the housing, and the display is connected to an external power source via the first slip ring. The imaging module is rotatably mounted on the mounting base. A second slip ring is provided on the surface of the mounting base facing the imaging module. When the imaging module is mounted on the mounting base, the second slip ring contacts the first slip ring to achieve electrical connection. The second slip ring is adapted to be electrically connected to an external power source. Thus, the imaging module is rotatable relative to the mounting base, allowing it to be used independently or in conjunction with the mounting base. When in conjunction with the mounting base, the imaging module can rotate 360° relative to the mounting base and can stop at any angle, facilitating user observation of the floating real image.

An imaging system includes an optical stack including an image sensor and at least one planar lens, the at least one planar lens being asymmetric with respect to at least one other optical element in the image sensor or the optical stack. In some embodiments, asymmetry can operate to reduce or eliminate keystone distortion.

The embodiment of the utility model provides a display device and electronic equipment. According to the display device, the dimming structure is arranged on the light emitting path of the display panel, and the flat plate lens is arranged on the light emitting path of the dimming structure, so that the first included angle formed between the plane where the display panel is located and the plane where the flat plate lens is located is smaller than 45 degrees, and the longitudinal space occupied by the display panel and the flat plate lens can be reduced; the thickness of the display device is reduced; and the angle of the light emitted by the display panel can be adjusted through the dimming structure, so that the light adjusted by the dimming structure can form a clear display image after being emitted from the flat lens, and normal display of the display device is realized.

The application relates to the technical field of micro-nano optics and high-precision thin film thickness measurement, and discloses a resolution-optimized thin film thickness measurement method and system based on a metasurface, to solve the problem that the existing thin film thickness measurement method cannot realize non-contact and high resolution. The system comprises a broadband light source, a composite metasurface measurement probe, a spectrometer and a data processing unit. The composite metasurface measurement probe comprises a composite metasurface, the composite metasurface comprises a multilayer step flat lens and a single-layer metasurface, the single-layer metasurface is composed of a transparent glass substrate and a micro-nano structure array constructed above the transparent glass substrate, and the flat lens is connected with the transparent glass substrate of the single-layer metasurface. The composite metasurface is used for receiving and phase-controlling incident light of different wavelengths. The spectrometer is used for recording the light intensity distribution of reflected light changing with wavelengths, and obtaining a reflected spectrum signal. The data processing unit is used for calculating the thin film thickness according to the reflected spectrum signal. The system can improve the precision of thin film thickness measurement.

The application discloses a light paper-based planar lens for electromagnetic wave beam steering and a planar antenna thereof, and belongs to the technical field of antennas. The paper-based main body is formed by surrounding a periodic interval arranged cavity structure with a sheet-shaped paper-based body, and has two opposite planes, i.e. an incident plane and an emission plane of electromagnetic waves; the sheet-shaped paper-based body is distributed with symbol units of a film-shaped metal material; the symbol units are compared with the metal surface area of the symbol units in a unit volume in the paper-based main body, and the metal surface area of a unit volume in the middle of the planar lens is greater than that of the periphery of the planar lens. The planar antenna further comprises a feed source which is installed close to the incident plane; electromagnetic waves propagate in the planar lens in a curved path and converge to be emitted out of the planar lens. When the feed source moves, the application can realize wide-angle scanning of the beam, and in a scanning range of ±50 degrees, the gain of the planar antenna decreases by less than 2dB, and very high gain and aperture efficiency can be achieved.

The invention discloses a lamp, and belongs to the technical field of lighting appliances. According to the LED lamp, the light source chip integrating the purple lamp bead main body, the blue lamp bead main body, the yellow lamp bead main body and the white lamp bead main body is arranged, a traditional insertion piece type light changing mode is replaced, use convenience and the lighting effect are greatly improved, and through the specific optical combination of the plane lens, the concave lens and the scattering mirror, the light emitting efficiency is improved. Light rays emitted by lamp beads in different areas are calibrated and centered through a plane lens, then the divergence angle is adjusted through a concave lens, and finally the light rays are uniformly guided out through a scattering mirror, so that the common phenomena of uneven corner illumination and color separation of a multi-chip light source are effectively solved, light spots are still round and uniform under different color switching and different focal lengths, and the light quality is improved. In addition, an intelligent system integrating remote control, APP and voice control realizes non-contact convenient operation, is particularly suitable for outdoor fishing scenes with two limited hands, and has excellent environmental adaptability and operation experience.

The utility model provides a projection lens. The projection lens comprises a first lens, a second lens, a beam splitter prism, a plane lens, a reflection lens, a third lens and a modulation chip which are sequentially arranged from an object side to an image side, wherein the beam splitter prism is used for receiving and guiding light source light and image light; the first lens and the second lens are arranged on the first side surface of the beam splitter prism and are used for receiving and projecting image light emitted from the beam splitter prism; the plane lens and the reflecting lens are arranged on the second side surface of the beam splitter prism; the third lens and the modulation chip are arranged on the third side face of the beam splitter prism, and the modulation chip is used for receiving the light source light, modulating the light source light into image light and then emitting the image light to the reflection lens. The projection lens meets the condition that FOV / FNO is larger than 15.7, FOV is the maximum field angle of the projection lens, and FNO is the relative aperture F number of the projection lens. The projection lens provided by the utility model is beneficial to meeting the field angle requirement and the optical efficiency. The utility model further provides a near-to-eye display device.

This invention discloses a flat plate lens and device for multi-angle annular uniform illumination in the terahertz band, relating to the field of terahertz active imaging. By setting multiple annular grooves or constructing a randomly rough surface on the exit surface of a flat plate lens with an air hole array and a center point defect, this invention can convert a Gaussian-distributed terahertz beam irradiated by a terahertz source into a multi-angle annular uniform illumination beam. This allows the terahertz wave to illuminate the target from different angles, increasing the reflected wave signal entering the detection system. This has significant application value for terahertz waves in non-destructive testing and human security inspection. Furthermore, in a reflective terahertz active imaging system, compared to a circular beam, the annular beam can convert small-angle incident light with low imaging utilization in the central part into large-angle incident light with higher imaging utilization, thus improving energy utilization while providing multi-angle illumination.

The present invention relates to an optical system (100, 200) comprising an imaging plane lens (110) and a planar light guide (120), the optical system (100) having an object side (104) and an image side (102), wherein the light guide (120) is configured to receive illumination light (152) and provide the illumination light to the object side (104), wherein the optical system (100) is configured to allow light to be transmitted from the object side (104) through the imaging plane lens (110) to the image side (102).

The invention belongs to the technical field of metasurfaces and plane lenses, and particularly relates to a focusing metasurface lens with an anti-shielding function, the lens is composed of 40 * 40 units with the period of 7.5 mm, each unit comprises a top layer metal annular patch, a dielectric layer and a bottom layer metal patch, the relative dielectric constant of a dielectric substrate is 2.65, and the relative dielectric constant of the dielectric substrate is 2.65. The units realize anisotropic response through circumferential notch design, a stable 180-degree phase difference is formed by adopting a mirror image inversion structure, the 1-bit phase modulation requirement is met, the array performs phase coding in the radial direction according to an Airy function, and a hollow annular layout is adopted, so that the self-bending and self-repairing characteristics of Airy beams are effectively utilized, and the phase modulation efficiency is improved. The electromagnetic wave can bypass physical shielding of an axis area, field intensity reconstruction is realized at a set focus, and the design can remarkably improve focusing gain and energy recovery capability of a system in a shielding environment while maintaining high cross polarization conversion efficiency in Ku frequency band application of 13GHz and the like.

The utility model relates to the technical field of lens processing, in particular to a flushing device for a plane lens cutting process, which comprises a base, a spraying assembly and a flow guide assembly. The base is provided with a clamping mechanism, the support is provided with a sliding rail and a sliding block, and the sliding block is connected with a spraying assembly; the spraying assembly is connected with external liquid supply equipment through the spray head, the flow dividing pipe and the liquid supply pipe; the flow guide assembly comprises a flow guide groove and a liquid collecting groove, and a filter screen is arranged in the liquid collecting groove. Cooling liquid or cleaning liquid is sprayed through the spray head, chippings are effectively removed, heat accumulation is reduced, and liquid recycling and filtering are achieved through the flow guide groove and the liquid collecting groove. The lens machining quality and efficiency can be improved, material deformation or damage is avoided, the structural arrangement is reasonable, and operation is convenient and fast.

The present invention relates to a new method for making metasurfaces comprising liquid gating. VO2 is an exemplary substrate for use in the present invention. The inventive metasurfaces can be used as a planar lens, vortex generator, beam deflector, and axicon, inter alia. The inventive methods allow metasurfaces to be formed readily on curved or flexible surfaces.

The utility model discloses a laser beam combiner detection and calibration device, which comprises a sleeve, two plane lenses, three mechanical irises, a plano-concave lens, a cantilever, a mounting ring, a rotary table and a base, the sleeve is provided with a lug seat, two ends of the cantilever are respectively connected with the lug seat and the mounting ring, the mounting ring, the rotary table and the base are sequentially connected, and the rotary table is connected with the base. The two plane lenses are arranged at the two ends of the sleeve respectively, the three mechanical irises and the plano-concave lens are arranged in the sleeve respectively, the concave face of the plano-concave lens points to the base, the two mechanical irises are arranged on one side of the concave face of the plano-concave lens, and the other mechanical iris is arranged on one side of the plane of the plano-concave lens. The baffle plate of the mechanical iris is provided with a silicon wafer and a distance sensor. Therefore, misjudgment in the traditional manual detection process can be avoided, whether the diameter of the laser beam of the laser beam combiner meets the requirement or whether the laser beam of the laser beam combiner is inclined or not is judged through the three mechanical irises and the plano-concave lens, and it is guaranteed that the laser of the laser beam combiner is qualified.

An optical lens and a related device are applied to the field of detection technology. The optical lens comprises: a first lens, a second lens, a third lens and a fourth lens which are coaxially arranged in sequence from a light source side to an object side. The first lens, the third lens and the fourth lens have positive focal power, and the second lens has negative focal power; at least one meniscus lens is included in the first lens, the second lens and the third lens, and the fourth lens comprises a double convex lens array or a convex flat lens array. The optical lens adopts an optical architecture of four lenses, the transmission performance of the light of the light source can be improved by reasonably distributing the shape and focal power of the four lenses, and the optical lens can be decoupled from the light source, which is beneficial to the miniaturization and modularization of the optical lens. Therefore, the perception device adopting the optical lens of the application can realize miniaturized design and high-quality detection performance, and the perception device can be a laser radar, a camera or a laser vision sensor integrating the laser radar and the camera.

The present invention relates essentially to a medical imaging system (200), preferably a surgical imaging system, the medical imaging system comprising an illumination system (220) and an imaging sensor (230), wherein the illumination system (220) comprises a plane lens (222) and at least one illumination source (210), wherein the plane lens (222) and the at least one illumination source (210) are aligned together with the imaging sensor (130, 230) along an optical path (216) of light originating from the at least one illumination source, wherein the plane lens (222) is positioned between the imaging sensor (230) and the at least one illumination source (210) along the optical path (216).

Techniques for designing display (glasses) devices in light-weight and small footprint are described. To reduce the cost, weight and volume of the display devices, only one imager is used. An optical engine (cube) is provided to split optical images from the imager into a first (left) portion and a second (right) portion. Each of the portions is redirected via one or more optical lenses to a predefined path, where the optical lenses are based upon planar lenses in one embodiment, all having different optical characteristics to diffract light beams at predefined angles.

This application provides a display device, a display method thereof, and a wearable device. The display device includes: a microdisplay panel having a plurality of pixels arranged in a matrix in a row and column direction, wherein a first pixel is any one of the plurality of pixels, and the first pixel includes a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged sequentially along a first direction, and the three sub-pixels correspond to one of the R, G, and B light-emitting units respectively; an actuator is used to enable a planar lens to have three working states, wherein in the first working state, the light emitted from the first sub-pixel passes through the planar lens and is emitted along a first path, in the second working state, the light emitted from the second sub-pixel is emitted along a second path, and the displacement between the first path and the second path is less than a first distance, and in the third working state, the light emitted from the third sub-pixel passes through the planar lens and is emitted along a third path, and the displacement between the third path and the second path is less than a first distance.

An optical fiber array assembly, signal receiving structure and optical module including an optical fiber array module and a lens module are disclosed. The optical fiber array module includes a base and optical fibers on one side of the base. The optical fibers each have an end configured as an inclined plane. The lens module is on the opposite side of the base, near the ends of the optical fibers. The inclined planes reflect optical signals in the optical fibers through the base and into the lens module. The lens module focuses the optical signals on one or more light receiving chips. The assembly provides a small light spot with higher coupling efficiency and increases the position window of all channels of the optical fiber array module and the product yield, while reducing process difficulty and the probability of collisions between the optical fiber array module and the light receiving chips.

The invention relates to the technical field of micro-nano optics and high-precision thin film thickness measurement, and discloses a super-surface-based resolution optimization thin film thickness measurement method and system in order to solve the problem that an existing thin film thickness measurement method cannot achieve non-contact and high resolution. The system comprises a broadband light source, a composite metasurface measuring probe, a spectrograph and a data processing unit, the composite metasurface measuring probe comprises a composite metasurface, the composite metasurface comprises a multi-layer stepped plate lens and a single-layer metasurface, the single-layer metasurface is composed of a transparent glass substrate and a micro-nano structure array constructed above the transparent glass substrate, and the plate lens is connected with the transparent glass substrate of the single-layer metasurface; the composite metasurface is used for receiving incident light with different wavelengths and carrying out phase regulation and control; the spectrograph is used for recording light intensity distribution of the reflected light along with wavelength change to obtain a reflection spectrum signal; the data processing unit is used for calculating the film thickness according to the reflection spectrum signal. By adopting the system, the precision of film thickness measurement can be improved.

The invention discloses a lens assembly with a liquid lens zoom anti-shake mechanism. The lens assembly comprises the liquid lens zoom anti-shake mechanism, a plane lens assembly and a base. The liquid lens zoom anti-shake mechanism comprises a liquid lens body and a carrier used for bearing the liquid lens body, and a permanent magnet is fixed to the carrier. The FPC coil is matched with the permanent magnet; the FPC coil comprises a plurality of layers of FPCs and a plurality of coils etched on a copper layer in the FPC coil; the coil and the permanent magnet can generate Lorentz force to drive the carrier to move so as to drive the liquid lens to deform, so that the curvature is changed to realize zooming; and one part of the plurality of coils and the other part of the plurality of coils can respectively generate Lorentz forces with opposite directions with the permanent magnet, so that the carrier drives the dynamic lens body to incline, thereby realizing angle anti-shake. The size of the zoom anti-shake mechanism can be reduced, so that the structure of the whole lens assembly is more compact.

This invention provides a composite right dihedral reflector array flat panel lens and a wide-viewing-angle, medium-free air-floating display device. The composite right dihedral reflector array flat panel lens includes a first light guide and a second light guide. The first light guide includes a first transparent right quadrangular prism and a quarter-wave plate, with the quarter-wave plate attached to the first transparent right quadrangular prism. The first light guide is composed of multiple rows and columns of first transparent right quadrangular prisms obliquely combined. The second light guide includes a second transparent right quadrangular prism and a second reflective film, and is composed of multiple rows and columns of second transparent right quadrangular prisms obliquely combined. The beneficial effects of this invention are: it effectively solves the defects and shortcomings of current floating displays, making it feasible to apply medium-free air-floating display devices to the automotive industry; its relatively low manufacturing cost allows the technology to also be applied to the consumer electronics field; it has a strong air-floating display effect, bringing significant economic and social benefits.

The invention provides a camera device. The camera device comprises a plane lens, an image acquisition module and a processor. The plane lens is provided with a textured pattern, and the plane lens is used for transmitting an optical signal and carrying noise information. The image acquisition module is located on the light emitting side of the plane lens and used for sensing an optical signal carrying noise information, converting the sensed optical signal into an electric signal and generating a first image according to the electric signal. The processor is used for processing the first image to obtain a second image with contour information. In the embodiment of the invention, the plane lens has the textured pattern, so that the first image acquired by the image acquisition module is a blurred image, and a relatively good privacy protection effect is achieved. Moreover, the first image is processed through the processor, the second image with the contour information can be obtained, and an effective monitoring effect can be achieved. Therefore, effective monitoring can be realized, and meanwhile, a relatively good privacy protection effect can be achieved.

The utility model provides a miniaturized lens module and a car lamp. The miniaturized lens module comprises a lens, a mounting frame, a substrate, a lamp bead, a reflection cup and a heat dissipation assembly. The lens is a curved surface body formed by cutting an aspherical lens through two planes, and comprises a rear plane for light incidence, a front convex surface for light emission, a top plane with D-shaped edge lines and a bottom plane with D-shaped edge lines. The lens is fixed on the mounting frame, the substrate is detachably and fixedly connected with the rear end face of the mounting frame, the lamp bead is located in the reflection cup, and the lamp bead and the reflection cup are mounted on the substrate together. The heat dissipation assembly is installed on the back face of the substrate. According to the utility model, by improving the structure of the lens, the space occupied by the lens is effectively reduced, and the miniaturization and integration development of the lens module is facilitated.

The invention discloses an optical lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from an object plane to an image plane along an optical axis. The first lens, the second lens and the fifth lens all have negative focal power, and the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power; the first lens is a convex-concave lens, the second lens is a concave-convex lens, the third lens is a biconvex lens, the fourth lens is a convex-concave lens or a convex-plane lens, the fifth lens is a convex-concave lens, the sixth lens is a biconvex lens, and the seventh lens is a convex-concave lens. The curvature radius of the object side face of the first lens is R1, the curvature radius of the image side face of the fourth lens is R9, the focal length of the optical lens is F, and R1 / F is larger than 4 and smaller than 6. R9 / Fgt; 18). On the premise of ensuring high performance and miniaturization, the ghost image suppression capability and the imaging quality are improved, and the high-definition image quality requirement is met.

The utility model discloses a gas flow type aerosol LIBS (Laser-induced Breakdown Spectroscopy) spectrum collecting device which comprises a laser, a condensing lens, an aerosol container and a spectrum collector, a vacuum target chamber is arranged in the aerosol container, a plane lens I and a plane lens II are arranged on the aerosol container, laser emitted by the laser device can be focused in the vacuum target chamber through the condensing lens, the aerosol container is further provided with a spraying air nozzle communicated with the interior of the vacuum target chamber, the outer opening end of the spraying air nozzle is used for being connected with an aerosol spraying device, and the spraying axis of the inner opening end of the spraying air nozzle is orthogonal to the focusing optical axis of the condensing lens. A focusing lens is further arranged in the vacuum target chamber, the focusing lens enables gathered LIBS spectrums to penetrate through the plane lens II to the outside of the aerosol container, the spectrum collector is located outside the aerosol container, and the focusing lens is arranged in the aerosol container. And the collecting end of the spectrum collector is positioned on the focusing point of the focusing lens.

An equivalent negative refractive index flat lens and a manufacturing method thereof, the method comprising the steps of: (1) forming reflective layers (20) on both opposing sides of a transparent substrate layer (10); (2) forming a protective layer (30) on each reflective layer (20); (3) forming a first bonding metal layer (40) on one of the protective layers (30) and a second bonding metal layer (50) on the other; and (4) stacking at least two flat optical waveguides along a first direction, and the first bonding metal layer (40) of each flat optical waveguide being bonded to an adjacent flat optical waveguide. The method includes a step (4) of contacting the second bonding metal layer (50) of the plate optical waveguide with heat and energization; a step (5) of taking two sets of multilayer planar optical waveguides, cutting one of the multilayer planar optical waveguides into a plurality of first striped planar optical waveguides and cutting the other into a plurality of second striped planar optical waveguides; and a step (6) of overlapping the first optical waveguide array (102) and the second optical waveguide array (103) along a first direction, and then adding protective window sheets (101, 104) on both sides.

The utility model discloses a light path structure, belongs to the technical field of laser welding, and particularly relates to a laser welding light path, which is mounted on an optical fiber, consists of a group of convex lenses, a group of reflectors and a plate lens, and specifically comprises a first convex lens, a second convex lens, a first reflector, a second reflector and the plate lens, the first convex lens is installed above the optical fiber and serves as a collimating lens to collimate light beams emitted by the optical fiber into parallel light beams. The first reflecting mirror is arranged above the first convex lens; the first reflecting mirror and the second reflecting mirror are arranged in opposite directions; the second convex lens is arranged on the left side of the second reflecting mirror; the two-dimensional laser welding device has the advantages that focusing light can move in a two-dimensional plane by the aid of fewer lenses and a simpler structure, the two-dimensional laser welding device is applicable to the field of laser welding, and two-dimensional track movement of focusing light spots can be realized by controlling movement of the two reflectors.