86 results about "Flat lens" patented technology

An optical system includes a light-receiving plane, a lens group, a pixel-based diaphragm, and a driving unit. The lens group is configured to direct an incident light to the light receiving plane. The pixel-based diaphragm is at an aperture stop of the lens group. The pixel-based diaphragm includes a first substrate coated with pixelated electrodes; a second substrate coated with an electrode; and an active medium layer between the first substrate and the second substrate. The driving unit is electrically coupled with the pixel-based diaphragm and configured to control the pixel-based diaphragm to have a first light transmitting pattern at a first time duration and a second light transmitting pattern at a second time duration, wherein the first light transmitting pattern is different from the second light transmitting pattern.

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.

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 utility model discloses a kind of miniature wide-angle lenses, it includes first lens, second lens, third lens, fourth lens, fifth lens, sixth lens and seventh lens sequentially distributed from object side to image side along optical axis, wherein: first lens is the convex-concave lens with negative optical power, wherein, the first surface of first lens close to object side is convex, and the second surface close to image side is concave;Second lens is the double convex lens with positive optical power;Third lens is the double concave lens with negative optical power;Fourth lens is the convex-concave lens with positive optical power;Fifth lens is the double convex lens with positive optical power;Sixth lens is the convex-concave lens with positive optical power;Seventh lens is the flat lens with positive optical power.In the utility model, the optical structure of seven glass lenses is used in the miniature wide-angle lens, to reduce the overall volume of miniature wide-angle lens.

The embodiment of the invention discloses a liquid lens, a lens system and a display device. In the liquid lens, a second substrate is provided with an opening; the elastic film covers the opening and is connected to the second substrate. The first substrate, the side wall, the second substrate and the elastic film define a containing cavity. The light-transmitting liquid is arranged in the accommodating cavity; the extrusion piece is located on the peripheral side of the open hole. The liquid lens has a plane lens state and a convex lens state, and when the liquid lens is in the plane lens state, the elastic film is in a plane shape; when the liquid lens is in a convex lens state, the extruding piece extrudes the light-transmitting liquid, the light-transmitting liquid extrudes the elastic film, and the elastic film protrudes out of the second substrate and is in a convex curved surface shape. According to the liquid lens, the extruding part is adopted to extrude the light-transmitting liquid, so that the light-transmitting liquid extrudes the elastic film to protrude, and at the moment, the light-transmitting liquid is in a convex lens shape. The protruding amount of the elastic film can be adjusted according to the extrusion degree of the extrusion piece on the light-transmitting liquid, and therefore zooming of the lens is achieved.

The utility model relates to the technical field of lenses, and provides a lens and a light source device. The lens comprises a lens body, the lens body is a plano-convex lens, and the lens body is provided with a convex surface and a bottom plane. An accommodating groove and a reflecting groove which are recessed towards the interior of the lens body are respectively formed in the bottom plane of the lens body; the containing groove is located in the middle of the bottom plane and used for containing the light source assembly, the reflection groove is located in at least one side of the two opposite sides of the containing groove, the inner wall of the reflection groove forms a reflection face, and the reflection face is used for reflecting light rays, emitted to the reflection groove, of the light source assembly; the inner wall of the reflecting groove forms a reflecting surface, so that light rays with large light emitting angles on the two sides of the light source assembly can be well restrained, the color of the light rays is uniform after the light rays are emitted through the lens, and the light mixing effect is improved.

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 wide-spectrum optical system and a lens, and relates to the technical field of optical imaging. The optical system comprises twelve lenses which are sequentially arranged from the object space to the image space, the fifth lens and the sixth lens form a first balsaming lens, and the seventh lens and the eighth lens form a second balsaming lens; the ninth lens, the tenth lens and the eleventh lens form a third cemented lens. The second lens, the third lens, the sixth lens, the seventh lens, the ninth lens and the eleventh lens are lenses with positive focal power, the twelfth lens is a plane lens, and the others are lenses with negative focal power. According to the wide-spectrum optical system and the lens provided by the invention, through a special optical structure consisting of twelve lenses, dispersion aberration and geometric aberration in a range of 400-1700 nanometers can be corrected at the same time, so that high-precision confocal imaging is realized, and the performance of a spectrum imaging system is remarkably improved.

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 invention provides a dual-frequency filtering planar lens antenna applied to satellite communication, which comprises a lens array, the lens array is composed of a plurality of lens units, each lens unit comprises a first substrate, a second substrate, a third substrate and a fourth substrate which are sequentially arranged from top to bottom, the upper surface of the first substrate is provided with a radiation patch of the dual-frequency filtering antenna, and the upper surface of the second substrate is provided with a radiation patch of the dual-frequency filtering antenna. A broadband magnetoelectric dipole is arranged on the fourth substrate, a snakelike strip line is arranged on the upper surface of the third substrate, and one end of the snakelike strip line is connected with a feed end metalized through hole of a radiation patch of the dual-frequency filtering antenna through a first vertical feed probe. And the other end of the snakelike strip line is connected with a feed arm of the broadband magnetoelectric dipole through a second vertical feed probe. The dual-band filtering antenna has the advantages that dual-band filtering and beam forming functions are achieved through the radiation patches of the dual-band filtering antenna, radiation zero points are generated on the two sides of two passbands, meanwhile, a high roll-off coefficient is kept through the snakelike strip line structure, and therefore the defects of traditional design are overcome.

This invention relates to the field of optical lens technology, and particularly to a wide-spectrum thermally ablated long-wave infrared characteristic measurement lens, comprising: an electromagnetic shielding window, a filter, a lens group, a detector protective glass, a detector filter, and a focal plane arranged sequentially along the optical axis from the object side to the image side; the lens group includes a first lens, a second lens, a third lens, and a fourth lens arranged sequentially along the optical axis from the object side to the image side; the first lens is an even-order aspherical negative lens; the second lens is an even-order aspherical positive lens; the third lens is a plano-concave even-order aspherical negative lens; and the fourth lens is a plano-convex even-order aspherical positive lens. This lens combines a wide spectral band, a large thermally ablated range, and electromagnetic shielding function, exhibiting excellent environmental adaptability and meeting the high-quality imaging requirements of different space environments. It can be applied to acquire wide-spectrum infrared characteristic data of targets in space environments.

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 relates to a plane lens for an antenna feed source, which comprises a surface layer, a conductor layer and a bottom layer, the surface layer and the bottom layer are dielectric layers, and the conductor layer is clamped between the surface layer and the bottom layer; the conductor layer comprises a plurality of metal units which are arranged in a rectangular array; each metal unit is a metal sheet of a square structure, a round hole is formed in the center of each metal unit, a plurality of fan-shaped parts are evenly formed in each round hole in a spaced mode through more than two first connecting sections intersecting at the circle center, part of the fan-shaped parts are called first fan-shaped parts, and the other fan-shaped parts are called second fan-shaped parts. The number of the first fan-shaped parts and the number of the second fan-shaped parts are the same and are even, the first fan-shaped parts and the second fan-shaped parts are arranged at intervals in a staggered mode around the center of the metal unit, and the two ends of the arc edge of each second fan-shaped part are connected and conducted through a second connecting section. And the middle points of the second connecting sections on the two oppositely arranged second fan-shaped parts are connected and conducted through a third connecting section. The invention further relates to an array antenna using the plane lens for the antenna feed source.

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 waveguide array (11) and a preparation method therefor, a flat lens (1) with a negative refractive index, and an aerial imaging device (100). The preparation method for the optical waveguide array (11) comprises: a resin layer preparation step (S1) of preparing a resin layer (111) on a substrate; a curing step (S2) of curing the resin layer (111); a reflective layer preparation step (S3) of preparing on the cured resin layer (111) a reflective layer (112) that covers the resin layer (111); repeating the resin layer preparation step (S1), the curing step (S2) and the reflective layer preparation step (S3) until an optical waveguide block formed by alternately self-assembling a preset number of resin layers (111) and reflective layers (112) is obtained (S4); and performing cold machining on the optical waveguide block to obtain the optical waveguide array (11) (S5).

This invention belongs to the field of haze meter devices, specifically disclosing a haze meter, including a light source, a flat lens, a second measuring aperture, a first measuring aperture, an input port of an integrating sphere, and an output port of an integrating sphere arranged coaxially in sequence, forming a light guide axis. It also includes a diffuse light acquisition module connected to the integrating sphere, with the input axis of the diffuse light acquisition module perpendicular to the light guide axis. A light guide and a circuit board are provided at the output port of the integrating sphere. A first channel and a second channel are provided through the light guide component. The circuit board has a first acquisition element corresponding to the first channel and a second acquisition element corresponding to the second channel. The invention also specifically discloses a measurement method for using the haze meter, including the haze meter described above. This solution enables the haze meter to simultaneously and accurately measure the three major optical characteristics of a product: transmittance, haze, and clarity. It also allows for individual or combined adjustment of the light-receiving area in the optical path for the measurement of haze, transmittance, and clarity.

The invention relates to a lidar system for detecting the surroundings, in order to transmit and / or receive light beams, comprising a waveguide array consisting of a plurality of radiating waveguides, preferably of the same type and arranged in parallel, each waveguide having a plurality of coupling points or radiating waveguide surfaces, the waveguide surface has a plurality of, in particular strip-shaped coupling structures, preferably coupling points or coupling structures for the radiation are located in an approximately equidistant grid, and the radiation direction is caused to oscillate in a first spatial direction by a change in the frequency and / or the effective refractive index of the wave in the radiation waveguide or in the radiation waveguide surface, the radiating waveguide array or the radiating waveguide surfaces are fed from the output end of the planar lens via the connecting waveguides or the connecting waveguide surfaces, and the radiating direction is rotated in a second spatial direction, preferably perpendicular to the first spatial direction, by means of a change in the frequency and / or the effective refractive index of the waves in the connecting waveguides or the connecting waveguide surfaces. The planar lens has a plurality of input ends which implement different radiation directions in a second spatial direction and which are coupled to the transmit-receive channels running in parallel, so that the radiation waveguide array or the radiation waveguide surface can be used for simultaneous detection of different radiation directions, preferably one of the two spatial directions is horizontal, and preferably one of the two spatial directions is horizontal. The other is vertical, preferably an arrangement comprising an array of radiating waveguides or radiating waveguide faces and connecting waveguides or connecting waveguide faces together with planar lenses is implemented on a photonic chip.

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 invention relates to a plane lens. Comprising two metal sheet groups, each metal sheet group comprises four metal sheets, the four metal sheets of each metal sheet group are coplanar, and the planes where the two metal sheet groups are located are parallel to each other and are arranged at intervals; the four metal sheets of each metal sheet group are distributed in a shape like a Chinese character'tian ', and the metal sheets of the metal sheet groups are opposite in a one-to-one correspondence mode. The plane lens has the advantages of being simple in structure, reasonable in design, capable of greatly improving the gain of an antenna in use so as to meet use requirements and the like. The invention also relates to a high-gain array antenna. Each oscillator of the high-gain array antenna is provided with a lens in the main radiation direction. The high-gain array antenna has the advantages that the gain can be increased by more than 1db on the premise that an oscillator does not need to be additionally arranged, a mounting plate with a large area does not need to be replaced, refitting is convenient, the windward side area of the antenna cannot be increased, potential safety hazards are small, and mounting is convenient.

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).