11306results about "Lens" patented technology

The present disclosure relates to the technical field of optics, and particularly relates to an optical lens and an electronic device. The optical lens of the present disclosure comprises an aperture stop and a plurality of lens units which are sequentially and coaxially arranged from an object side to an image side; a plurality of lens units are provided on the side of the aperture stop facing the object side, forming a stop front lens unit group; a plurality of lens units are provided on the side of the aperture stop facing the image side, forming a stop rear lens unit group; the number of lens units of the stop front lens unit group is the same as the number of lens units of the stop rear lens unit group, symmetrically offsetting distortion, thereby facilitating reduction of optical distortion of the optical lens; and the stop front lens unit group has negative refractive power, the stop rear lens unit group has positive refractive power, and the stop front lens unit group and the stop rear lens unit group form aberration compensation to improve the imaging performance of the optical lens. The lens unit closest to the object side has positive refractive power to converge large-angle off-axis beams, achieving a large field of view angle of the optical lens and reducing a clear aperture of an optical path at the same time, thereby achieving miniaturization of an optical path structure.

A metalens for focusing light is described. The metalens includes a library of elements for varying the propagating phase of the focusing light over at least a 2π radians range, where the library of elements is arranged in a sub-wavelength pattern that defines spacings between the elements. Each spacing exhibiting temperature-dependent spacing changes within a temperature range and each element in the library of elements includes: a refractive index exhibiting a temperature-dependency within the temperature range, a shape exhibiting a temperature-dependency within the temperature range, and a size exhibiting a temperature-dependency within the temperature range. The metalens also includes a phase profile defined by a combination of the refractive index, shape, and size of each element in the library, and the sub-wavelength pattern of the library of elements. The metalens also includes a focal length defined by the phase profile, the focal length exhibiting a temperature-dependency within the temperature range.

The embodiment of the invention provides an optical system, intelligent head-mounted equipment and a zooming method of the optical system. The optical system is used for the intelligent head-mounted device, and the optical system comprises an imaging module, an eyeball tracking module and a processor. The imaging module comprises a zoom lens, and the eyeball tracking module is used for acquiring eyeball watching information; the processor is used for determining zoom information according to eyeball watching information provided by the eyeball tracking module and controlling the zoom lens to zoom according to the zoom information; wherein the zoom information comprises the thickness and the curvature radius of the zoom lens.

A method and a device of designing an optical system, and a storage medium are provided. The method includes: S1. determining an initial structure parameter of the optical system according to a design requirement; S2. optimizing the initial structure parameter according to the ray tracing method, and obtaining a theoretical structure parameter; S3. performing a discretization on a phase of a metalens of the theoretical structure parameter and obtaining a discrete phase; S4. performing an optical field propagation simulation according to the discrete phase, and obtaining an imaging performance index; S5. if the image performance index meets the design requirement, obtaining a target structure parameter; if the image performance index doesn't meet the design requirement, re-optimizing the image performance index and obtaining the target structure parameter.

The invention discloses a structure parameter library construction method, a super-lens design method and an optical system. The super-structure grating primitive structure parameter library construction method comprises the steps of obtaining a first grating primitive structure and determining a first periodic distribution function according to the first grating primitive structure; according to the characteristics of the grating primitive structure, full-analytic Fourier transform expansion is carried out on the first periodic distribution function, and a first Fourier analytic function corresponding to the first grating primitive structure is obtained; performing strict coupling wave analysis on the first Fourier analytic function in a preset polarization direction to obtain first complex amplitude information; and according to the first complex amplitude information, determining first matrix information used for describing a polarization behavior of a first grating primitive structure, and associating the first matrix information and the first grating primitive structure as first design information in a parameter library. The structural parameter library construction method provided by the invention is suitable for an application scene for processing polarization characteristics and phase information, and avoids segmentation or discretization.

To provide an optical system capable of enhancing coupling of light from a light source to an optical fiber, particularly an optical system that can be incorporated into medical instruments such as endoscopes.SOLUTION: There is provided an optical system. The optical system comprises a lens including an input surface for receiving light from at least one light source and an output surface through which the light exits the lens, the lens further including a peripheral surface extending between the input surface and the output surface and configured to direct, via total internal reflection, at least a portion of the light incident thereon through the output surface to an output focal point. The optical system can further comprise a tapered light pipe optically coupled to the lens and a light guide (e.g., one or more optical fibers) that is optically coupled to the tapered light pipe. The lens directs the received light to an output focal point that is disposed within the tapered light pipe.SELECTED DRAWING: Figure 3A

The present invention relates to an aperture unit having an optical axis. The aperture unit includes a fixed portion, a guiding element, a first blade and a driving assembly. The guiding element is movably connected to the fixed portion, and the first blade is movably connected to the guiding element and the fixed portion. The driving assembly is disposed on the guiding element for driving the guiding element to move relative to the fixed portion in a first moving dimension. When the guiding element moves relative to the fixed portion in the first moving dimension, the first blade is driven by the guiding element to move relative to the fixed portion in a second moving dimension, and the first moving dimension and the second moving dimension are different.

The invention discloses a medium-wave infrared pixel-level spectral polarization optical system, which belongs to the field of lenses and comprises a refraction lens group, a cold diaphragm, a super-structure micro-lens array and a medium-wave infrared quantum dot detector which are sequentially arranged along an incident light path, the super-structure micro-lens array comprises an object side micro-structure and an image side micro-structure; the image side microstructure is used for realizing focusing; the object side microstructure comprises a plurality of object side units which are periodically distributed; each object side unit comprises a polarization metal wire grating structure and a plurality of metasurface-microcavity structures; the polarization metal wire grating structure is formed by arranging metal wire gratings according to different directions so as to realize detection of different orthogonal polarization states; the metasurface-microcavity structure comprises a middle dielectric layer, distributed Bragg gratings located on the two sides of the middle dielectric layer and a metasurface columnar structure unit array embedded into the middle dielectric layer, and the metasurface columnar structure unit array is used for achieving filtering of light of different wave bands. The system has the advantages of good imaging quality, small size, real-time imaging and the like.

The present disclosure provides a polishing device comprising a frame (1), and a polishing disc (2), an assistant polishing disc (3), and a fixture (5) that are disposed on the frame (1). At least one polishing position (4) is disposed on the assistant polishing disc (3). The assistant polishing disc (3) is clamped by the fixture (5) and in contact with the polishing disc (2). The fixture (5) includes a plurality of claws (52), the plurality of claws (52) include at least a first claw extending from above the at least one polishing position (4) to an edge of the assistant polishing disc (3). A pre-tightening part is disposed on a position, corresponding to the at least one polishing position (4), of the first claw. The pre-tightening part includes a scale and a pre-tightening member. A scale value representing a polishing removal efficiency is preset on the scale.

The invention discloses a titanium dioxide super-lens large-view-field achromatic imaging method and device, and the method comprises the steps: building a simulation model through a time domain finite difference method, and obtaining the phase amplitude corresponding relation of TiO2 nano-column units under different sizes; and according to a first target function preset by single-wavelength super-diffraction focusing, reversely designing and iteratively optimizing the surface phase of the TiO2 super-lens by using a genetic algorithm to obtain the single-wavelength super-diffraction super-lens. And then, optimizing the genetic algorithm, and reversely designing and optimizing the phase of the single-wavelength super-diffraction super-lens again in combination with a Rayleigh-Sommerfeld diffraction formula and a second target function preset by broadband achromatism to obtain the broadband achromatism super-diffraction super-lens. And finally, point spread functions with different off-axis degrees are optimized by means of an exhaustion algorithm and an angular spectrum theory, and large-view-field achromatic super-diffraction imaging is realized. The invention effectively solves the problems of large aberration, obvious chromatic aberration, limited resolution, difficulty in parameter regulation and control and poor off-axis imaging performance of the traditional optical lens and the existing super lens in large-view-field imaging.

A light emitting module includes: a substrate; a plurality of light sources fixed on the substrate and generating individually controllable outputs; a light shielding member disposed between the light sources; a first lens that is disposed above the light sources and on which the light emitted from each of the light sources becomes incident; and a drive unit capable of rotating the substrate. The light sources include a first light source and a second light source. The angle formed by the axis of rotation of the substrate and the optical axis of first light emitted by the first light source and exiting the first lens differs from the angle formed by the axis of rotation and the optical axis of second light emitted by the second light source and exiting the first lens. The second light can irradiate a first circular track having the axis of rotation as its center.

An apparatus includes a waveguide and one or more partially reflective surfaces embedded inside the waveguide, wherein each of the one or more partially reflective surfaces includes a multi-layer coating structure, wherein a first portion of the multi-layer coating structure induces an overall phase shift of light propagating through the first portion of the multi-layer coating structure and wherein a second portion of the multi-layer coating structure is selected to decrease the overall phase shift.

The invention provides a focus-adjustable liquid double telecentric lens and intelligent production equipment, and relates to the technical field of optical lenses. The focus-adjustable liquid double telecentric lens comprises a first lens, a second lens, a third lens, a liquid lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object space to an image space along an optical axis; the first lens is a biconvex lens with positive focal power, the second lens is a biconvex lens with positive focal power, the third lens is a biconcave lens with negative focal power, the fourth lens is a biconcave lens with negative focal power, the fifth lens is a biconvex lens with positive focal power, and the sixth lens is a biconvex lens with positive focal power. Wherein the focusing position of the focusable liquid double telecentric lens is changed by adjusting the driving voltage or the driving current of the liquid lens, and rapid focusing under different working distances is completed. According to the embodiment of the invention, the system is small in size, and is excellent in imaging quality in a large depth-of-field range.

An optical speckle receiver for receiving a speckle signal from a sample, the optical speckle receiver comprising an optical detector and an aperture and / or lens array. The aperture and array respectively comprise a plurality of apertures or lenses and is located between the sample and the optical detector such that the received speckle pattern is obtained from multiple discrete sample locations.

A double sided meta lens includes a substrate having a first surface and a second surface facing each other, a first meta lens that includes a plurality of first nanostructures arranged on the first surface of the substrate and exhibits a first phase profile, and a second meta lens that includes a plurality of second nanostructures arranged on the second surface of the substrate and exhibits a second phase profile. The first phase profile may be configured such that a central region of the first meta lens operates as a convex lens and a peripheral region of the first meta lens operates as a concave lens, and the second phase profile may correspond to a focusing lens and has a section in which an absolute value of a phase slope increases with distance from a center of the second meta lens.

A display system 700 comprising a replicator and a light control device 706, 706’. The replicator receives spatially modulated light, waveguides the light between a reflective surface and a transmissi

To provide a plastic lens which is excellent in productivity and has improved durability.SOLUTION: A plastic lens includes a lens body, an undercoat layer coating an optical effective surface which is at least one surface of the lens body, and an antireflection layer coating the undercoat layer from a side opposite to the lens body, wherein the lens body contains a heat-resistant acrylic resin, the undercoat layer is composed of a silicon oxide SiOx(1<x<2), a refractive index at a wavelength of 500 nm of the undercoat layer is 1.60 or more and 1.70 or less, and thickness of the undercoat layer is more than 300 nm and less than 1,000 nm.SELECTED DRAWING: None

The invention belongs to the technical field of super-structure lenses, and particularly relates to a super-structure axicon and a design method thereof, an imaging system composed of the super-structure axicon and an imaging method.The design method comprises the steps that a two-dimensional unit structure simulation model of a concentric ring structure is constructed, simulation calculation is conducted on the two-dimensional unit structure simulation model, and a simulation result is obtained; obtaining the complex amplitude transmittance of the two-dimensional unit structure to the incident light; according to the configuration of each two-dimensional unit structure and the limitation of the metasurface processing technology, screening the two-dimensional unit structures meeting the processing technology requirements, and integrating the two-dimensional unit structures into a unit structure library; and according to the two-dimensional unit structure in the unit structure library and the target phase surface, constructing a two-dimensional cross section of the superstructure axicon based on the concentric ring structure, and rotating the two-dimensional cross section around the optical axis of the superstructure axicon to obtain a three-dimensional structure of the superstructure axicon. According to the invention, the wide-spectrum consistency of the point spread function of the Bessel beam generated by the super-structure axicon is utilized, and the non-blind image restoration algorithm is combined, so that the chromatic aberration is eliminated, and the image definition is improved.

This invention relates to a pair of intelligent, multimodal smart eyeglasses designed for adaptive vision, biometric ocular monitoring, and predictive emergency response. The system integrates multilayer lenses filled with electrochromic gel and surrounded by elastic structures to enable dynamic focal length modulation in response to user visual behavior. An array of sensors—including visible light, ultraviolet, micro-cameras, infrared emitters, gyroscopes, and ultrasonic transceivers—collects multispectral data to evaluate environmental and physiological parameters. Real-time data processing is performed by an embedded quantum microcontroller, which manages light transmittance, detects eye fatigue, maps ocular surfaces, and identifies hemodynamic abnormalities such as fainting, seizure, or ocular stroke. Advanced imaging techniques, such as ultrasonic ptychography and wave diffraction analysis, enable non-invasive 3D mapping of ocular layers and internal eye motion. The system also supports wireless communication with external platforms including smartphones, vehicles, and brain-machine interfaces, enabling proactive safety interventions. These features work in tandem to support early diagnosis of critical conditions, protect vision, and personalize user experiences through machine learning and adaptive feedback mechanisms.

The invention relates to the technical field of spectacle lens processing, in particular to optical spectacle lens polishing equipment which comprises a bottom plate, a polishing unit and a locking mechanism. The rotating ring and the pushing plates and the clamping blocks on the rotating ring jointly clamp the circumferential face of the spectacle lens and conduct self-locking, so that the rotating ring and the spectacle lens are integrated, in the follow-up polishing face replacing process, the rotating ring is moved upwards and turned over, the spectacle lens is placed on the vertical plate, and the polishing face is replaced. In the process, the reference of the rotating ring is always taken as the reference of the spectacle lens, so that the problem that the processing time and the processing error are increased due to the fact that the reference of the spectacle lens needs to be repositioned in the process of replacing the polished surface is solved; the polishing device is suitable for the polishing machining process of two spherical surfaces of the spectacle lens, the swing path of the polishing plate is limited in the polishing process, and the polishing precision and stability are improved.

An optical lens having six lenses along an optical axis from an object side to an image plane, sequentially comprises: a first negative optical power lens, first object side concave surface, second image side concave surface; a second negative optical power lens, third object side concave surface, fourth image side convex surface; a third positive optical power lens, fifth object side convex surface, sixth image side convex surface; a fourth positive optical power lens, seventh object side convex surface, eighth image side convex surface; a fifth negative optical power lens, ninth object side surface being concave, tenth image side convex surface; a sixth positive optical power lens, eleventh object side convex surface, and twelfth image side concave surface. Fourth and fifth lenses are adhered together to form a cemented lens. Real image height IH corresponding to maximal field of view and optical lens effective focal length f satisfy: 0.55<f / H<0.65.

A light-field microscopy system includes a light-field microscope, and an image processing system configured to receive images from the light-field microscope and perform a hybrid point-spread function (PSF) operation using a hybrid point-spread function that comprises numerical profiles that are adjusted by experimental positions acquired from an experimentally recorded PSF.

A display system includes a replicator and a light control device 1000. The replicator receives spatially modulated light and replicates the light to form multiple replicas by waveguiding between a re

A vehicular exterior rearview mirror assembly includes a mirror head accommodating a mirror reflective element and an illumination module, which includes a light source, a first mask, and a second mask. When the light source is powered, emitted light that passes through the first mask is a first color and emitted light that passes through the second mask is a second color. With the mirror assembly mounted at a vehicle, and when the light source is powered to emit light, light emitted by the light source passes through the first mask to project a first projected image onto a ground region and passes through the second mask to project a second projected image onto the ground region. The first projected image includes a first logo portion having the first color, and the second projected image includes a second logo portion having the second color.

The present application provides an array-type image detection device, including two columns of imaging arrays arranged at intervals along a first direction, each column of the imaging array includes a plurality of imaging modules arranged at intervals along a second direction, each imaging module includes a magnifying lens and an imaging chip arranged in sequence along its optical axis; each imaging module magnifies the image to be detected located in its detection area and images it in its imaging area and is acquired by the imaging chip located in its imaging area; and except for the detection areas located at the head and tail sides of the second direction, each detection area has overlapping parts with other detection areas at both ends along the second direction. The array-type image detection device provided by the present application can effectively solve the problems of low resolution of existing contact image sensors, difficulty in detecting high-resolution images, and detection blind spots when performing magnified detection, and can obtain a clear magnified image of the image to be detected within the full-frame range.

An aperture unit having an optical axis is provided, which includes a fixed portion having a first surface and including a protrusion formed on the first surface, a guiding element movably connected to the fixed portion and including a through hole, a first blade movably connected to the guiding element and the fixed portion, and a driving assembly use for driving the guiding element to move for moving the first blade. The optical axis passes through the through hole. The first surface has a first accommodating space having a recessed structure to accommodate the guiding element, and the protrusion extends toward the first blade.

The invention discloses a photon integrated interference imaging system based on a front-end wave-shaped microlens array, and the system comprises a microlens array which is of a wave-shaped structure and is formed by arranging a plurality of same interference arms according to a certain rule, the lenses on each interference arm and the lenses on the adjacent different interference arms can be paired to realize acquisition of optical signals; and the photon integrated chip and the signal processing system are positioned below the micro-lens array, and are used for transmitting the optical signal and performing interference processing to obtain target space frequency spectrum information, and then performing inverse Fourier transform to obtain a restored image of the target. According to the invention, the wave-shaped micro-lens array is designed, the one-dimensional to two-dimensional frequency spectrum coverage of the system is realized, and better imaging quality is realized by using fewer lenses.

An optical system and an imaging device are provided, and the optical system includes seven optical elements In order from an object side to an image side, the seven optical elements include: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; each of seven optical elements includes an object-side surface facing towards the object plane and an image-side surface facing towards the image plane; at least one optical element of the seven optical elements is a metalens, and other optical element are aspheric optical lenses; and from the image side to the object side, both the first aspheric optical lens and the second aspheric optical lens include at least one aspheric surface, and the aspheric surface includes one point of inflection.

The embodiment of the invention discloses a VR optical module and a head-mounted display device. Wherein the VR optical module comprises a display assembly, a variable-focus lens array and an imaging assembly which are sequentially arranged along the same optical axis; the display assembly is used for emitting image light; the imaging assembly is used for forming a virtual image from the image light; the variable-focus lens array comprises a plurality of variable-focus lenses, and the variable-focus lens array is configured to be capable of adjusting the focal length of the variable-focus lens array under driving so as to adapt to the diopter of a wearer.

An optical system is provided and includes a fixed assembly, a movable element, a movable assembly, and a driving module. The fixed assembly defines a main axis, and the fixed assembly has a casing on which a casing opening is formed, corresponding to the main axis. The movable element is movable relative to the fixed assembly and is connected to a first optical element. The movable assembly is connected to the movable element. The driving module is configured to drive the movable assembly so as to drive the movable element to move relative to the fixed assembly. The first optical element has a first section and a second section. When viewed along the main axis, the size of the first section is larger than the size of the casing opening, and the size of the second section is smaller than the size of the casing opening.