84 results about "Lenslet" patented technology

The invention discloses an all-solid-state snapshot full-Stokes parameter measurement and imaging enhancement sensor device. The all-solid-state snapshot full-Stokes parameter measurement and imaging enhancement sensor device comprises a micro-lens array module, a liquid crystal phase modulation module, a polarization wire grating array module and an image sensor module. The micro lens array module is composed of a plurality of micro lenses which are arranged in a two-dimensional mode, and incident light is focused on the photodiode of each pixel. The liquid crystal phase modulation module is composed of two high-speed liquid crystal variable phase delayers, and active phase modulation is carried out on the polarization state of incident light. Polarized light information in four polarization directions can be obtained only through single shooting in the polarization wire grating array module. The image sensor module calculates the full Stokes parametric polarization characteristics of the incident light. According to the invention, full-polarization information measurement of incident light can be realized only through single exposure, and a polarization enhancement mode is switched after measurement is completed, so that the imaging efficiency of the sensor in dark light scenes such as weak contrast target detection is greatly improved.

The utility model discloses a measuring clamp for an optical circular array lens, which comprises a substrate, and the front side of the substrate is provided with a central shaft; the lensometer sleeve is mounted on the rear side of the substrate and is provided with a lensometer connecting hole penetrating through the substrate; the plunger fixing block is mounted on the upper side of the base plate and is provided with a spring plunger extending downwards; the circular array lens seat is connected to the center shaft in a sleeving mode and used for installing a circular array lens, the circular array lens is provided with 24 small lenses which are arranged in a circumferential array mode, and 24 positioning grooves corresponding to the spring plungers are formed in the outer ring of the circular array lens seat; and the circular array lens pressing block is mounted on the substrate through a fastening assembly and covers the circular array lens seat in a pressing manner. According to the utility model, the fixture is used to reduce the invalid time of repeated alignment of the optical center during measurement, the dial is shifted to realize rapid switching of the measurement lens, and the efficiency is improved. The inspection of the whole circular array lens is completed within one minute, the effect of improving the efficiency by more than 20 times is achieved, the measurement time is greatly shortened, and the efficiency is improved.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

The utility model relates to the technical field of lighting, provide a spotlight, include: light -transmitting panel, lens and light source, the light source is located the incident end of lens, the light -transmitting panel is located the outgoing end of lens, be equipped with the light outlet on the light -transmitting panel, the central axis of light outlet and the central axis of lens coincide, and the diameter of light outlet is less than the diameter of the outgoing end of lens. The utility model discloses a spotlight, the diameter of light outlet on the light -transmitting panel is less than the diameter of the outgoing end of lens, owing to the smaller light outlet, the stray light of lens outgoing is blocked by the cover plate, only the light that passes through the convergence of lens is exported from the light outlet, thereby avoided the glare.

The utility model discloses a catadioptric thermal imaging optical system, which comprises a diaphragm, a second reflector, a lenslet and a first reflector which are sequentially distributed at intervals along an optical axis S from an object side to an imaging surface, and the outer diameter of the diaphragm and the outer diameter of the first reflector are larger than the outer diameter of the second reflector. A through hole is dug in the middle of the first reflector, a small lens is arranged on the left side of the through hole, the diaphragm is made of chalcogenide glass or germanium materials, the first reflector is an aspheric reflector with a concave face, the second reflector is an aspheric reflector with a convex face, and the concave face faces the diaphragm and is opposite to the convex face. Light emitted from the object side and with the wavelength ranging from 8 micrometers to 14 micrometers penetrates through the periphery of the diaphragm to reach the first reflector, is reflected by the concave face for the first time to reach the second reflector, is reflected by the convex face for the second time and then is refracted by the small lens to be imaged on the imaging face, the manufacturing cost is low, and the imaging quality is good.

A spectacle lens is disclosed that includes compound microlenses arranged in a pattern. A compound microlens includes an on-axis microlenslet and an off-axis sub-lenslet located on the on-axis microlenslet. The off-axis sub-lenslet has a different optical functionality than the on-axis microlenslet. By selecting the appropriate compound microlens design, the addition of microlenslets with sub-lenslets around the periphery of the main structure optimizes the spectacle lens for myopia prevention, vertigo prevention, or any other visual related condition.

Methods for reducing wavefront errors, manifesting during the process of refocusing of an accommodating (re-focusable) lens system that includes an elastically-deformable lenslet disposed along an optical axis and that has an optical power that is varied by changing the degree of applanation of an area of contact of such elastically-deformable lenslet with a neighboring lenslet in response to variation of force applied to the lenslet axially (in one case—by an external element connected with or forming a part of the lens system housing and / or lenslet support element). Associated accommodating lens systems.

Certain embodiments provide an arm assembly (120) for a wide angle viewing system (100) for an ophthalmic microscope. The arm assembly (120) comprises an articulated arm (130) configured to be coupled to a reduction lens module (110), and a loupe lens turret (140) coupled to the articulated arm (130). The loupe lens turret (140) comprises a body (141), a base (150) rotationally coupled to the body (141), and a spring (200) coupled to the body (141) and the base (150). The base (150) is configured to receive a removable loupe lens assembly (160, 170). The spring (200) is configured to a first spring force and a second spring force. The first spring force rotates the base (150) in a first direction and holds the base (150) against the body (141) in a first position. The second spring force rotates the base (150) in a second direction and holds the base (150) against the body (141) in a second position.

Eyeglass lens, eyeglass lens kit and method of providing an eyeglass lens design. An eyeglass lens is provided comprising an aperture having a refractive power and at least two annular focusing structures surrounding the aperture, the annular focusing structures providing an additional power of at least 0.5 dpt with respect to the refractive power provided by the aperture, at least one annular focusing structure consisting of lenslets abutting each other to form a ring of lenslets and providing a plurality of foci along an annular line, adjacent annular focusing structures being spaced apart from each other, characterized in that at least one annular focusing structure provides an annular focal line, an annular diffuser being arranged between and contiguously abutting adjacent annular focusing structures, one of the adjacent annular focusing structures consisting of lenslets abutting each other to form a ring of lenslets and providing a plurality of foci along an annular line, while the other of the adjacent annular focusing structures provides an annular focal line.

The utility model discloses an ultra-wide-angle near-infrared imaging system. A first lens (G1), a second lens (L2), a third lens (G3), a diaphragm (STO), a fourth lens (L4), a fifth lens (L5), a sixth lens (L6) and an optical filter (IR) are sequentially arranged from an object plane to an image plane; the effective surface calibers of the first lens and the second lens are large, so that the field angle is large, and the F number is small; the lens type adopts a spherical surface and an aspheric surface, and the negative lens and the positive lens are combined with each other, so that aberration reduction and f theta distortion control are facilitated, the imaging effect is good, and the MTF at the cut-off frequency is high; the second, fourth, fifth and sixth lenses are made of plastic materials, so that the cost is controlled.

A luminaire includes a first array light engine, a second array light engine, and a control system. The first array light engine includes a plurality of light emitters and first and second lens arrays, each with pluralities of lenslets. Collimation of light rays from the first array light engine varies as the second lens array moves relative to the first lens array. The second array light engine has a linear array of light emitters and a linear lens. Collimation of light rays from the linear lens varies as the linear lens moves relative to the linear array of light emitters. The control system controls a beam angle of the light rays from the first array light engine by moving the second lens array and controls a beam angle of the light rays from the linear lens by moving the linear lens.

The application discloses a kind of full solid, snapshot type full stokes parameter measurement and imaging enhanced sensor device, including microlens array module, liquid crystal phase modulation module, polarization grating array module and image sensor module.Microlens array module is composed of many small lens two-dimensional arrangement, focusing on the photodiode of each pixel on incident light.Liquid crystal phase modulation module is composed of two high-speed liquid crystal variable phase retarder, realize the polarization state of incident light active phase modulation.Polarization grating array module only needs single shooting to obtain four polarization directions of polarized light information.Image sensor module calculates the full stokes parameter polarization characteristics of incident light.The application only needs single exposure to realize the full polarization information measurement of incident light, and after completing measurement, it turns into polarization enhancement mode, greatly improves the imaging efficiency of sensor in weak contrast target detection and other dark light scene.

The invention relates to an ophthalmic lens element (1) intended to be worn by a wearer, comprising: at least one prescription portion (2) having a first optical function configured to provide, when the lens element (1) is worn by the wearer, a refractive correction of the wearer's eye based on the wearer's prescription; and a plurality of lenslets (3), each lenslet (3) of said plurality of lenslets being configured to provide at least one second optical function different from the first optical function, wherein each lenslet (3) has a shape, a size and a position such that at least a portion of said lens element (1) has a modulation transfer function (MTF) whose values are configured such that the modulation transfer function of said lens element (1) is lower than or equal to 0.6 in a spatial frequency range comprised between 1 and 5 cycles per degree.

An adaptive optics system is provided using a nonuniform Shack-Hartmann wavefront sensor (NSHWS) including an array of nonuniform lenslets, with an orthogonal polynomial used to determine a size and a placement for each lenslet and an array of detectors located in a focal plane of the array of nonuniform lenslets with a detector corresponding to each lenslet.

An autonomous vehicle LIDAR system includes: a laser; optical transmission system to shape / scan the light beam along light paths toward a target; an optical reception system collecting reflected laser light; and an electronic system synchronizing the beam scan, performing time-of-arrival measurements, and determining target range. The reception system includes an objective lens and a one-dimensional sensor array, each sensor formed of a grid of sub-pixels. A first transmission system includes: a cylindrical lens, scanning mirror, and collimating lens. The cylindrical lens expands the laser beam only in a first orthogonal direction to the optical path, producing an oval beam. A second transmission system includes: a focusing lens, scanning mirror, and second lens with lenslets being sequentially illuminated by the optical paths that individually focus the light that's collimated by a third lens creating spots on the target. Each sensor includes an FET that selectively couples sub-pixels to a readout channel.

The application discloses an embedded color-changing lamp bead, which comprises a support and a lamp holder. A chip is fixedly installed in the lamp holder through die bonding. A spherical mirror is fixedly installed above the chip. A light channel is formed in the upper portion of the spherical mirror. Three groups of annular reflecting surfaces are equidistantly arranged on the inner wall of the light channel. The three groups of annular reflecting surfaces gradually increase from bottom to top, forming inclined surfaces with different angles. The surfaces of the light channel and the annular reflecting surfaces are uniformly provided with convex surfaces. A compound eye lens is embeddedly installed on the top of the light channel. The spherical mirror is used to convert light into annular light. The annular light is injected into the light channel. The light is dispersed in multiple directions through the three groups of annular reflecting surfaces with different inclined angles. When the light passes through the compound eye lens, each small lens focuses the light on a certain point behind the small lens. Since the compound eye lens comprises multiple small lenses, multiple light source images can be formed. The light source images are superimposed on each other, so that uniform light is formed on the illumination surface.

The present application relates to the field of optical telescope technology, and proposes a kind of spectroscopic popular science telescope, including frame body, field lens ocular lens, cemented ocular lens, display screen and ridge prism are connected from top to bottom on frame body respectively;Half house cemented prism is fixedly connected between one side of ridge prism and frame body, and the inside of frame body is connected with light splitting focusing module, and light splitting focusing module includes relay lens large lens, relay lens middle lens and relay lens small lens;Light splitting focusing module is composed of three relay lenses of relay lens large lens, relay lens middle lens and relay lens small lens, and light splitting focusing module is arranged on original observation light path, and original observation light path is divided into the following two ways: one way is observation light path, directly conducted to field lens ocular lens for user naked eye observation;Another way is imaging acquisition light path.Through the above technical scheme, the problem that the existing telescope exists prism observation and imaging light path coincides, sometimes there will be shielding interference, which will affect the user's judgment.

The utility model relates to a scattering symmetric multi-point out-of-focus lens and a pair of frame glasses thereof. The scattering symmetric multi-point out-of-focus lens comprises a central optical region, a micro lens distribution region and an edge region which are arranged on a lens substrate, the central optical area is arranged at the geometric center of the lens base body; the micro-lens distribution area is arranged on the periphery of the central optical area and is an annular area with a specific radius; the micro lens group comprises a large lens and two small lenses; the micro-lenses are distributed in an annular scattering central symmetry manner in the annular area of the micro-lens distribution area; engraving grids are arranged on the distribution area and the edge area of the micro lens, and the engraving grids are tiny scattering points engraved on the surface of the lens by engraving equipment with nanoscale precision. According to the myopia prevention and control lens, the nanometer carving technology and the multi-point micro lens defocusing combined technology are adopted, dry astigmatism caused by stray light is avoided, dynamic defocusing intervention is carried out, the eye axis increasing process is greatly delayed, the comfort degree is more effectively improved, and myopia prevention and control are efficiently carried out.

The invention relates to a lens element (1) intended to be worn by a wearer, comprising at least one prescription portion (2) having a first optical function configured to provide a dioptric correction of an eye of the wearer when the lens element (1) is worn by said wearer based on a prescription of the wearer, and a plurality of lenslets (3), each lenslet (3) of said plurality of lenslets being configured to provide at least one second optical function which differs from the first optical function,wherein each lenslet (3) has a shape, a size and a position such that at least one portion of said lens element (1) has a modulation transfer function (MTF) whose values are configured so that the modulation transfer function of said lens element 1 over a range of spatial frequencies comprised between 1 and 5 cycles per degree are lower or equal to 0.6.

A light source system is disclosed, the system comprises: a multimode laser unit; a first lenslet array positioned in a path of said laser beam and configured to form an array of focused spots in a selected plane downstream of said first lenslet array; a spatial filter mask carrying an array of pinholes positioned in said selected plane; a second lenslet array having spatial arrangement of lenslets similar to the first lenslet array and positioned such that said spatial filter mask is in a back focal plane of said second lenslet array, thereby collimating laser light from the array of focused spots into a corresponding array of beamlets; and a third lenslet array positioned downstream of said second lenslet array, configured for focusing said array of beamlets to form an output spot array at an exit pupil of said light source system.

An LED light engine includes a plurality of LED emitters; a first lens array having a plurality of collimating lenslets corresponding to the plurality of LED emitters, where the first lens array is optically coupled to the plurality of LED emitters and configured to emit a plurality of light beams corresponding to the plurality of LED emitters, each of the light beams including partially collimated light rays; a light integrator optic to receive the plurality of light beams and to internally reflect the light beams to generate a plurality of at least partially-homogenized light beams; a homogenizer optically coupled to the light integrator optic and configured to receive the plurality of at least partially-homogenized light beams from the light integrator optic; and a converging lens optically coupled to the homogenizer. The homogenizer and the converging lens illuminate a gate with the plurality of light beams from the light integrator optic.

Accommodating (re-focusable) lens system that includes multiple elastically-deformable lenslets sequentially disposed along an optical axis and that has an optical power that is varied by changing the degree of applanation of an area of contact between the constituent lenslets in response to variation of force applied to the lenses axially by an external element connected with or forming a part of the lens system housing and / or lenslet support element. Method for operating the same in a manner that reduces optical wavefront errors introduced by the process of refocusing thereby improving imaging characteristics of the lens system.

The present invention relates to a wavelength selective ophthalmic lens that filters selective wavelengths through a colored layer to treat various diseases. The base lens of the first correction power may include a plurality of raised lenslets on a surface thereof, each lenslet having a second correction power different from the first correction power. A colored layer may be coated on the base lens to dispose one or more of the plurality of lenslets. The colored layer may be coated to the base lens, the laminate coated to the base lens, or the lenslet itself. The colored layer may be coated with a dye, pigment, or the like. Various patterns of colored lenslets may be employed, including patterns forming concentric rings.

A lens inspection sheet for accurately identifying the geometric center of a multi-segment lens is provided. [Solution] A lens inspection sheet 10 used to inspect a multi-segment lens 30 provided in spectacles 40, the lens inspection sheet having a sheet body 12 that is translucent and can be attached to the surface of the multi-segment lens 30, and a mark 14 formed on the sheet body 12, the mark 14 having a circular portion 16 and a central portion 18 that indicates the center position of the circular portion 16, the circular portion 16 being visible on the multi-segment lens 30 when the sheet body 12 is attached with the central portion 18 aligned with the center of the multi-segment lens 30, and having a size such that the outer edge of the circular portion 16 is adjacent to the innermost lenslet row 34 of multiple lenslet rows 34 arranged concentrically.

Accommodating (re-focusable) lens system that includes multiple elastically-deformable lenslets sequentially disposed along an optical axis and that has an optical power that is varied by changing the degree of applanation of an area of contact between the constituent lenslets in response to variation of force applied to the lenses axially by an external element connected with or forming a part of the lens system housing and / or lenslet support element. Method for operating the same in a manner that reduces optical wavefront errors introduced by the process of refocusing thereby improving imaging characteristics of the lens system.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

The utility model discloses a vehicle lamp structure with a vehicle lamp language display function. The vehicle lamp structure comprises a lampshade, a lamp holder, a first lamp panel, a lens, a wire plug, a small lens, a breathable sticker, a cooling fin, a base, a lamp language cover, a lining plate and a second lamp panel. The lampshade and the lamp holder are mutually embedded, the lampshade and the base are mutually clamped, and the first lamp panel, the lens, the wire plug, the small lens, the breathable paste, the cooling fin, the base, the lamp cover, the lining plate and the second lamp panel are located between the base and the lampshade. The vehicle lamp structure is optimized, the vehicle lamp is detachable and combined, attractive and convenient to maintain in the later period, communication between vehicles and between the vehicles and pedestrians can be effectively enhanced by arranging the language vehicle lamp, and traffic safety is improved.

The utility model discloses a mining lamp with an adjustable light-emitting angle. The mining lamp comprises a lamp body, a lens and a lamp panel, wherein the lens and the lamp panel are arranged in the lamp body; a plurality of inclined rail pieces are arranged on the inner side wall of the lamp body, and adjusting sliding rails are arranged on the inclined rail pieces. The lens is arranged at the top of the lamp body, a plurality of connecting columns are arranged on the outer side wall of the lens, the connecting columns are connected with the adjusting sliding rails of the inclined rail pieces in a one-to-one correspondence mode, and the connecting columns are in sliding fit with the adjusting sliding rails and used for adjusting the distance between the lens and the lamp panel; according to the mining lamp, when the light emitting angle needs to be adjusted, a user can drive the lens to rotate, so that the connecting column ascends clockwise or descends anticlockwise along the adjusting sliding rail to increase or reduce the distance between the lens and the lamp panel, and therefore the light emitting angle is adjusted; the light-emitting angle can be adjusted without the aid of tools or the disassembly of the lens, the adjustment operation is quick, simple and convenient, and the use experience of a user is improved.

A method includes providing an ophthalmic lens having a prescribed optical power, the ophthalmic lens having a surface having a base curvature corresponding to the prescribed optical power, and exposing a material at the surface to laser radiation sufficient to locally reshape the material to form a plurality of lenslets on the surface. The lenslets each have a corresponding optical power that differs from the prescribed optical power of the ophthalmic lens.