33results about How to "Expand the field of view range" patented technology

The invention discloses a berry phase metasurface-based multi-plane holographic multiplexing method, and belongs to the field of micronano optical and holographic multiplexing application. The berry phase metasurface-based multi-plane holographic multiplexing method comprises the steps of achieving phase recovery by a 3D-Fienup algorithm, taking different numerical values of reproduction positions of different images, and acquiring a computer generation holographic diagram containing all information; selecting a metal coupling polaron as a berry phase metasurface structure unit, achieving phase modulation based on a berry phase modulation principle, and enabling a polarization state to become a multiplexing path by coding a holographic phase profile conjugated with an original phase to achieve a holographic multiplexing passage selected by circular polarization; making a metasurface phase sheet for recording the computer generation holographic diagram, selecting an emergent circular polarization light orthogonal to chirality of the polarization stat, and optically reproducing a three-dimensional object or a wave surface which is recorded. The holographic multiplexing method with sub-wavelength pixel of visible light and near-infrared bands, ultrathinness, large visual angle and large capacity is provided by the invention; and moreover, the crosstalk can be effectively reduced, and the holographic multiplexing of circular polarization selectivity is achieved.

The invention provides a laser distance measuring sensor which comprises a base, a laser transmitter, a scanning unit, an image processing unit and a data processing unit. The scanning unit comprises a motor connected with the base and a prism connected with the motor, and the motor is fixed on the base; the prism synchronously rotates with the motor and reflects and scans light beams emitted by the laser transmitter; the image processing unit comprises an ordinary CCD image sensor and a cylindrical concave mirror; the data processing unit is connected with the motor and records rotating angle information of the prism. Compared with a traditional laser distance measuring sensor, the laser distance measuring sensor is higher in measurement precision and sensitivity, smaller in size, lighter in weight, lower in cost and longer in working life and has large application value in the field of low-cost intelligent consumption.

The invention relates to an optical waveguide device for AR equipment, a manufacturing method of the optical waveguide device and the AR equipment. The optical waveguide device comprises an optical waveguide substrate, a coupling-in area and a coupling-out area, the coupling-in area is provided with a first grating used for coupling incident light into the optical waveguide substrate, the coupling-out area is provided with a second grating used for coupling out light from the optical waveguide substrate after two-dimensional expansion, the first grating is provided with a coupling-in grating vector, and the coupling-out area is provided with a coupling-out grating vector. The second grating is provided with a first coupled-out grating vector and a second coupled-out grating vector which are crossed with each other, the grating unit arrays of the first grating and the second grating are basically parallel in one dimension direction and have the same period, and the first coupled-out grating vector and the second coupled-out grating vector are symmetrical relative to the coupled-in grating vector; the second grating is a two-dimensional surface relief grating and is of a three-order cylinder array structure. The invention has the advantages of simple and compact structure, large field angle range, small light energy loss, strong equipment cruising ability and the like.

The invention discloses an optical lens, a camera module and electronic equipment. The optical lens comprises a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element which are sequentially arranged from an object side to an image side along an optical axis. The first lens element has positive refractive power; the second lens element has negative refractive power; the third lens element has positive refractive power; and the eighth lens element has negative refractive power. The optical lens meets the following relation: 2mm < SD82 / FNO < 3.5 mm, wherein SD82 is the maximum effective half aperture of the image side surface of the eighth lens element, and FNO is the reciprocal of the relative aperture of the optical lens. According to the optical lens, the camera module and the electronic equipment provided by the invention, a light, thin and miniaturized design can be met, meanwhile, the characteristic of large aperture is achieved, the shooting requirement of a large field angle is met, the picture texture of the optical lens is improved, the resolution ratio and the imaging definition of the optical lens are improved, and clear imaging is achieved.

The embodiment of the invention discloses an optical system, a lens module and terminal equipment. The optical system comprises a plurality of lenses which are sequentially arranged from an object side to an image side. The plurality of lenses comprise a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the first lens has negative refractive power; the second lens has negative refractive power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the third lens has positive refractive power, and the object side surface of the third lens is a convex surface; the fourth lens element has positive refractive power; the fifth lens element with negative refractive power; the sixth lens element with positive refractive power; the seventh lens has negative refractive power, and the object side surface of the seventh lens is a concave surface; and the eighth lens element has positive refractive power. The refractive power of the first lens to the eighth lens and the surface types of the second lens, the third lens and the seventh lens are limited in the optical system, so that the optical system has high pixel, imaging information can be captured more clearly, the image quality is better, and meanwhile, the imaging visual field range is widened.

The invention discloses an optical lens, a camera module, electronic equipment and an automobile. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein the first lens has negative refractive power; the second lens has negative refractive power; the third lens has positive refractive power; the fourth lens has negative refractive power; the fifth lens has positive refractive power, the sixth lens has positive refractive power, the seventh lens has negative refractive power, and the eighth lens has positive refractive power; the optical lens meets the following relation: -6 < f1 / f <-4, f1 is the focal length of the first lens, and f is the effective focal length of the optical lens. According to the optical lens, the camera module, the electronic equipment and the automobile provided by the invention, light rays emitted into the optical lens at a large angle can be grasped while the light, thin and small-sized design is met, the super-large-angle shooting requirement can be met, and high-pixel imaging can be realized.

The invention relates to the technical field of optical imaging devices, and particularly discloses a camera lens, a camera module, electronic equipment and an automobile. The camera lens comprises afirst lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side, wherein the first lens element has negativerefractive power, the second lens element has negative refractive power, the third lens element has positive refractive power. the fourth lens element has positive refractive power, the fifth lens element has negative refractive power, The sixth lens element has positive refractive power. The camera lens can directly keep small size and light weight without increasing the number of lens pieces, can keep good optical performance, and can well capture details of a shot object.

The invention discloses an optical lens, a camera module, an electronic device and an automobile, the optical lens comprises a first lens with negative refractive power which is sequentially arranged from an object side to an image side along an optical axis, and the object side surface and the image side surface of the first lens are respectively a convex surface and a concave surface; a second lens element with negative refractive power having a concave image-side surface; the third lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The fourth lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, respectively. The sixth lens element with positive refractive power has a convex object-side surface and a convex image-side surface. The optical lens meets the requirement of 3mm lt; f * tan (FOV / 2) lt; 4 mm. According to the optical lens, the camera module, the electronic equipment and the automobile provided by the invention, the miniaturization of the optical lens can be realized, the characteristics of large aperture and wide angle can be realized, and the imaging definition is improved.

The invention discloses an optical lens, a camera module and electronic equipment, and the optical lens comprises a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, the object side surface and the image side surface of the second lens are respectively a convex surface and a concave surface; a third lens element with negative refractive power having a concave image-side surface; the object side surface and the image side surface of the fourth lens are convex surfaces; the object side surface and the image side surface of the fifth lens are respectively a concave surface and a convex surface; the object side surface and the image side surface of the sixth lens are concave surfaces; a seventh lens element with refractive power having a concave object-side surface; the image side surface of the eighth lens is a convex surface; the object side surface and the image side surface of the ninth lens are respectively a convex surface and a concave surface; the optical lens satisfies 0.3 lt; sD < 12 > / IMGHlt; and 0.5. With the adoption of the scheme, while the imaging quality is ensured, the optical system has the characteristics of miniaturization and large field angle.

The invention discloses a double-sided microlens array and a manufacturing method thereof. The double-sided microlens array comprises an array formed by double-sided microlens; each double-sided microlens in the array comprises an upper-layer micro convex lens and a lower-layer micro convex lens; the upper-layer micro convex lens and the lower-layer micro convex lens of each double-sided microlens are in the central one-to-one array form; and the upper-layer micro convex lenses and the lower-layer micro convex lenses are adhered together. According to the embodiment of the invention, the angel of field of the microlens array can be increased greatly, and the focal length of the microlens array can be shortened.

The invention provides an optical display system with a folded light path and AR equipment, and belongs to the technical field of optical imaging. The optical display system comprises a display, a first optical system assembly and a second optical system assembly, wherein the first optical system assembly is arranged on a light emitting path of the display; the second optical system assembly comprises a first optical lens and a second optical lens, the first optical lens is arranged on a light emitting path of the first optical system assembly, the second optical lens is arranged on a reflected light path of the first optical lens, an included angle [beta] is formed between the optical axis of the first optical lens and the light emitting path of the first optical system assembly, and [beta] is greater than or equal to 20 degrees and less than or equal to 70 degrees; and the system is small in size, good in imaging quality and large in field angle range. The AR equipment can be adaptedto people with different myopia degrees through an adjusting system.

The invention provides an optical imaging system, an image capturing module and an electronic device. The optical imaging system sequentially comprises a diaphragm, a lens and a protection flat plate from the object side to the image side along the optical axis. The lens has positive refractive power, the object side surface of the lens is a concave surface at a paraxial region, the image side surface of the lens is a convex surface at a paraxial region, and the object side surface and the image side surface of the lens are aspheric surfaces; and the optical imaging system satisfies the following relational expressions that 9<SDs1 / the absolute value of sags1<12 , wherein SDs1 is the maximum clear aperture of the object side surface of the lens, and sags1 is the distance from the maximum clear aperture of the object side surface of the lens to the central point of the object side surface of the lens, which is parallel to the optical axis. According to the optical imaging system, the aspheric lens with positive refractive power is adopted, the total optical length is small, a large field angle range can be obtained, the wide angle of the optical imaging system can be improved, and the imaging quality is improved by reasonably configuring the curvature of the object side face of the lens.

The invention discloses an optical system, an image capturing module and an electronic device. The optical system includes a first lens and a second lens arranged in order from an object side to an image side along an optical axis, the first lens has refractive power, an object-side surface of the first lens is convex in a paraxial region thereof, an image-side surface of the first lens is concave in a paraxial region, the second lens has positive refractive power, the object side surface of the second lens is a convex surface at a paraxial region, the image side surface of the second lens is a convex surface at a paraxial region, the maximum field angle of the optical system is FOV, the entrance pupil diameter of the optical system is EPD, and the FOV and the EPD satisfy the conditional expression: 19.5 deg / mm<FOV / EPD< 25.0 deg / mm. According to the design, the imaging quality of the optical system can be improved, the miniaturization design can be realized, and the production cost can be reduced.

The invention discloses an optical system, a lens module and electronic equipment. The optical system sequentially comprises a first lens to a seventh lens from an object side to an image side along an optical axis. The first lens, the second lens, the third lens and the sixth lens have negative refractive power, and the fourth lens, the fifth lens and the seventh lens have positive refractive power. The object side surfaces of the first to fifth lenses and the seventh lens and the image side surfaces of the fourth, fifth and seventh lenses are convex at a paraxial region, and the object side surface of the sixth lens and the image side surfaces of the first to third lenses and the sixth lens are concave at a paraxial region. The optical system satisfies the relational expression: -3 < f47 / f13 <-2. Through reasonable design of the surface type, the refractive power and the focal power of f13 and f47 of the optical system, the optical system ensures high imaging resolution, improves the imaging picture definition in a wider range and increases the depth of field, so that detail information of an image can be captured during long-distance imaging.

The invention relates to an optical system, a camera module, electronic equipment and a carrier. The optical system comprises, in order from an object side to an image side along an optical axis: a first lens element with negative refractive power having a convex image-side surface at least in a paraxial region thereof; a second lens element with positive refractive power; a third lens element with negative refractive power having an image-side surface being convex at least in a paraxial region thereof; a fourth lens element with positive refractive power having an object-side surface being convex at least in a paraxial region thereof; a fifth lens element with positive refractive power; a sixth lens element with negative refractive power; and a seventh lens element with positive refractive power having an object-side surface being convex at least in a paraxial region thereof. The optical system satisfies the following relation: 2*f*tan (FOV / 2) is greater than 9mm and less than 10mm; and f is the effective focal length of the optical system, and FOV is the maximum field angle of the optical system. The optical system can restrain distortion, improve the resolving power and reduce the distortion risk of an edge area in a shot picture.

The invention provides an optical imaging system which sequentially comprises,from the object side to the image side: a first lens with positive bending force, wherein the object side surface of the first lens is a plane, and the image side surface of the first lens is a concave surface; a second lens which has positive bending force, and the object side surface of the second lens is a convex surface; a third lens element with positive refractive power; a fourth lens element with positive refractive power; a fifth lens element with negative refractive power; and a sixth lens element with positive refractive power. The image side surface of the fourth lens is glued with the object side surface of the fifth lens, and the image side surface of the fifth lens is glued with the object side surface of the sixth lens. According to the optical imaging system, high pixels are guaranteed, the imaging view field range is widened, the imaging depth range is deepened, and long-distance detail information can be captured. The invention further provides an image capturing module with the optical imaging system, an electronic device with the image capturing module and an automobile.

The invention provides an optical waveguide assembly which comprises a waveguide sheet and at least two diffraction units, the first diffraction unit comprises a first coupling-in liquid crystal grating and a first coupling-out liquid crystal grating, the first coupling-in liquid crystal grating is used for coupling first light into the waveguide sheet, and the first coupling-out liquid crystal grating is used for coupling the first light out of the waveguide sheet; the second diffraction unit comprises a second coupling-in liquid crystal grating and a second coupling-out liquid crystal grating, the second coupling-in liquid crystal grating is used for coupling the second light into the waveguide plate, and the second coupling-out liquid crystal grating is used for coupling the second light out of the waveguide plate; according to the invention, by alternately applying voltage to each diffraction unit, the first coupled-in liquid crystal grating and the first coupled-out liquid crystal grating of the first diffraction unit or the second coupled-in liquid crystal grating and the second coupled-out liquid crystal grating of the second diffraction unit are in a grating state in the first direction, so that light rays with different wavelengths can be respectively diffracted; and the full-color display is simple in structure, light, thin and small.

The invention provides a camera lens. The pick-up lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens from a light incident side to a light emergent side along an optical axis, a second lens element with positive refractive power; a third lens element with negative refractive power; a fourth lens element with positive refractive power; a fifth lens element with negative refractive power; wherein when the object distance is 25mm, the axial distance TTLA from the surface, close to the incident side, of the first lens to the imaging surface, and when the object distance is 25mm, the axial distance BFLA from the surface, close to the emergent side, of the fifth lens to the imaging surface meet the following condition: TTLA / BFLlt; and 3.5. According to the invention, the problem that a wide angle and a micro distance of a camera lens in the prior art are difficult to consider at the same time is solved.

The invention discloses an optical lens, a camera module and electronic equipment, and the optical lens comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power and a fifth lens with positive refractive power, which are sequentially arranged from an object side to an image side along an optical axis; the second lens element with refractive power has a convex object-side surface and a concave image-side surface in a paraxial region, respectively. The third lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The fourth lens element with negative refractive power has a convex object-side surface and a concave image-side surface in a paraxial region, respectively. A fifth lens element with refractive power having an object-side surface being convex in a paraxial region thereof; a sixth lens element with refractive power; a seventh lens element with refractive power having a convex object-side surface and a concave image-side surface in paraxial regions, respectively; the optical lens satisfies the following relational expressions: 2.5 lt; fno * TTL / ImgHlt; and 3.5. According to the optical lens, the camera module and the electronic equipment provided by the invention, the miniaturization of the optical lens can be realized, and meanwhile, a large-aperture shooting effect is achieved.

The invention provides a large-visual-field retro-modulation reflector free space laser communication system, belongs to the technical field of wireless communication, and aims at solving the problems of small line aligning visual field, high requirement accuracy of the system and poor link stability in the prior art. A communication transmitting terminal is connected with the a port of a first circulator, the c port is connected with a photoelectric detector, and the b port is connected with a coupling lens. A Cassegrain telescope and the coupling lens are coaxially arranged. A peep hole optical system and a curved micro-lens array are coaxially arranged. The peep hole optical system is connected with a 1x2 coupler array. The high output power end of the 1x2 coupler array is connected with an Nx1 high-speed optical switch. The low output power end of the 1x2 coupler array is connected with a high-speed photoelectric detector array. The high-speed photoelectric detector array, a controller and the high-speed optical switch are connected in turn. The high-speed optical switch is connected with the d end of a second circulator, and the e end is accessed to an optical fiber amplifier. The optical fiber amplifier is accessed to a high-speed modulator which is accessed to the f end of the second circulator.

The invention relates to the technical field of camera devices, and particularly discloses an optical imaging lens, a lens module and electronic equipment. The optical imaging lens comprises a first lens and a second lens which are sequentially arranged from the object side to the image side, the first lens has negative refractive power, the second lens has positive refractive power, and the imageside surface of the second lens is a convex surface in a paraxial region; the optical imaging lens meets the conditional expression that -13 < (f1 * f2) / (CT2-CT1) < -8, f1 is the focal length of thefirst lens, f2 is the focal length of the second lens, CT1 is the center thickness of the first lens on the optical axis, and CT2 is the center thickness of the second lens on the optical axis. According to the optical imaging lens, on the premise that the optical performance requirement of the optical imaging lens is met, the optical imaging lens is more compact, and miniaturization, lightness and thinness design of the optical imaging lens can be achieved more conveniently.

The invention discloses a double-sided microlens array and a manufacturing method thereof. The double-sided microlens array comprises an array formed by double-sided microlens; each double-sided microlens in the array comprises an upper-layer micro convex lens and a lower-layer micro convex lens; the upper-layer micro convex lens and the lower-layer micro convex lens of each double-sided microlens are in the central one-to-one array form; and the upper-layer micro convex lenses and the lower-layer micro convex lenses are adhered together. According to the embodiment of the invention, the angel of field of the microlens array can be increased greatly, and the focal length of the microlens array can be shortened.

The invention provides a radar and an angle adjusting device. The angle adjusting device comprises a first annular spherical mirror and a second annular spherical mirror which are stacked in sequence;the curvature radiuses of the first annular spherical mirror and the second annular spherical mirror are the same; the inner surfaces of the first annular spherical mirror and the second annular spherical mirror are spherical surfaces; an initial light beam can enter a cavity of the first annular spherical mirror through a light through hole in the side wall of the first annular spherical mirror,is reflected once on the inner surface of the second annular spherical mirror after being reflected for N-1 times on the inner surface of the first annular spherical mirror, then is reflected once ona reflector in the cavity of the second annular spherical mirror after being reflected for N-2 times on the outer surface of the second annular spherical mirror, and is emitted from an outlet of thefirst annular spherical mirror or the second annular spherical mirror. According to the geometrical optics principle, the field angle range of the emitted initial light beam is larger than that of theincident initial light beam, so that the field angle range can be expanded; and when the angle adjusting device is applied to a radar, the field angle range of the radar can be expanded.

The invention relates to the technical field of electronic products, and particularly discloses an optical imaging lens, a camera shooting module, electronic equipment and an automobile. The optical imaging lens 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 the object side to the image side, wherein the optical imaging lens meets the conditional expression that f2 / f is greater than -20 and less than-13, f2 is the focal length of the second lens, and f is the effective focal length of the optical imaging lens. According to the optical imaging lens, the seven lenses respectively with the negative refractive power, the negative refractive power, the positive refractive power, the positive refractive power, the negativerefractive power, thepositive refractive power andthe positive refractive power are arranged, the aberration of the optical imaging lens can be corrected, astigmatism can be eliminated, the imaging resolution of the optical imaging lens can be improved, and the optical imaging lens can be balanced in the aspects of field angle range expansion and high pixel. When the optical imaging lens is used in a camera of a vehicle, the driving risk can be reduced.

The invention provides an optical system, a lens module and electronic equipment. The optical system sequentially comprises, from an object side to an image side along an optical axis, a first lens to a fifth lens, wherein the first lens, the second lens and the fourth lens have negative refractive power, the third lens and the fifth lens have positive refractive power, the object-side surfaces of the second lens to the fifth lens are convex in a paraxial region, the image-side surfaces of the second and fourth lenses are concave in a paraxial region, the image-side surfaces of the third and fifth lenses are convex in a paraxial region, and the optical system meets the relational expression that f1*f2 is more than 8 mm<2> and less than 11.5 mm<2>, wherein f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. According to the invention, by reasonably designing the surface types and the refractive power of the first lens to the fifth lens and making the optical system meet the relational expression, the optical system has high imaging resolution and enlarges the field angle range at the same time.

The invention discloses a berry phase metasurface-based multi-plane holographic multiplexing method, and belongs to the field of micronano optical and holographic multiplexing application. The berry phase metasurface-based multi-plane holographic multiplexing method comprises the steps of achieving phase recovery by a 3D-Fienup algorithm, taking different numerical values of reproduction positions of different images, and acquiring a computer generation holographic diagram containing all information; selecting a metal coupling polaron as a berry phase metasurface structure unit, achieving phase modulation based on a berry phase modulation principle, and enabling a polarization state to become a multiplexing path by coding a holographic phase profile conjugated with an original phase to achieve a holographic multiplexing passage selected by circular polarization; making a metasurface phase sheet for recording the computer generation holographic diagram, selecting an emergent circular polarization light orthogonal to chirality of the polarization stat, and optically reproducing a three-dimensional object or a wave surface which is recorded. The holographic multiplexing method with sub-wavelength pixel of visible light and near-infrared bands, ultrathinness, large visual angle and large capacity is provided by the invention; and moreover, the crosstalk can be effectively reduced, and the holographic multiplexing of circular polarization selectivity is achieved.

The invention discloses an optical lens, a camera module and electronic equipment. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis; the object side surface and the image side surface of the first lens are a plane and a concave surface respectively; the image side surface of the second lens is a concave surface; the object side surface and the image side surface of the third lens are convex surfaces; the object side surface and the image side surface of the fourth lens are concave surfaces; the object side surface and the image side surface of the fifth lens are convex surfaces, and the object side surface of the sixth lens is a convex surface; the optical lens meets the following relation: 3.5 < f45 / f < 10, f45 is the combined focal length of the fourth lens and the fifth lens, and f is the effective focal length of the optical lens. According to the optical lens, the camera module and the electronic equipment provided by the invention, light rays emitted into the optical lens at a large angle can be grasped while the light, thin and miniaturized design is met, the shooting requirement of a large field angle can be met, and clear imaging can be realized.

The invention provides an optical display system based on a Fresnel lens, and belongs to the technical field of optical imaging, the optical display system comprises a display, a first optical lens, a second optical lens and the Fresnel lens, the first optical lens is arranged on a light emitting path of the display, and the second optical lens is arranged on a light emitting path of the Fresnel lens. The first optical lens is arranged on a transmission light path of the first optical lens, the second optical lens is arranged on a transmission light path of the first optical lens, the Fresnel lens is arranged on a reflection light path of the second optical lens, the focal length of the Fresnel lens is f, and f is smaller than 500 mm. The optical system is compact in structure, small in size, light in weight, good in imaging quality and large in field angle range, stray light is eliminated, and user experience is greatly improved.