132 results about "Lenslet" patented technology

A flat nanophotonic computational camera, which employs an array of skewed lenslets (meta-optics) and a learned reconstruction approach is disclosed herein. The optical array is embedded on a metasurface that with a height of approximately one micron, is flat and sits on the sensor cover glass at approximately 2.5 mm focal distance from the sensor. A differentiable optimization method continuously samples over the visible spectrum and factorizes the optical modulation for different incident fields into individual lenses. A megapizel image is reconstructed from a flat imager with a learned probabilistic reconstruction method that employs a generative diffusion model to sample an implicit prior. A method for acquiring paired captured training data in varying illumination conditions is proposed. The proposed flat camera design is assessed in simulation and with an experimental prototype, validating that the method is capable of recovering images from diverse scenes in broadband with a single nanophotonic layer.

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.

An example system includes a first steering layer interposed between an electromagnetic (EM) source and an emission lens. The first steering layer includes a triplet lens having a Plano-convex lens, a Plano-concave lens, and an electro-optical (EO) crystal positioned between the lenses. The EO crystal includes transparent electrodes on each side, coupled to the respective lenslet and / or the EO crystal. The system includes the EM source providing an incident EM beam on the first steering layer, and the emission lens emitting a steered EM beam to a target location.

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.

Disclosed herein are systems and methods including polarization sorting metasurface microlens array devices. In certain embodiments, a polarization imaging device is provided. The polarization imaging device includes: a source of image light; a metasurface lenslet array comprising a plurality of repeating metasurface lenslets, where the plurality of repeating metasurface lenslets comprise a plurality of first metasurface lenslets configured to diffract the image light into a first polarization light in a first direction and a second polarization light in a second direction; an image sensor positioned in the optical path of the first polarization light and the second polarization light, and where the image sensor includes a plurality of image sensing units including a first image sensing unit positioned to sense the first polarization light and a second image sensing unit positioned to sense the second polarization light.

The lens unit comprises a first lens part and a second lens part, the first lens part is provided with a plurality of first small lenses which are arranged at intervals, each first small lens is provided with a first cambered surface and a first plane which are opposite to each other, and the second lens part is provided with a second cambered surface and a second plane which are opposite to each other. Wherein the second lens part is provided with a plurality of second small lenses which are arranged at intervals, and each second small lens is provided with a second cambered surface and a second plane which are opposite to each other; wherein the first lens portion and the second lens portion are mounted in a snap-in manner such that the first plane of the first lenslet and the second plane of the second lenslet are attached to each other, the first lenslets and the second lenslets are arranged so that the positions of the first lenslets correspond to the positions of the second lenslets in the thickness direction of the lens unit.

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.

An optical wireless communications (OWC) receiver is configured for receiving light encoded with one or more data signals from one or more light sources of one or more OWC transmitters and for generating one or more electrical signals which are representative of the received light. The OWC receiver comprises a photodetector configured to generate the one or more electrical signals, a freeform optical component comprising a plurality of lenslets, each lenslet comprising a corresponding lenslet optical surface, wherein at least one of the lenslet optical surfaces is translationally and cylindrically asymmetric, wherein the freeform optical component comprises a three-dimensional freeform optical surface which includes the lenslet optical surfaces, and wherein the freeform optical component and the photodetector are configured so that the freeform optical component directs at least a portion of the light that is incident on the freeform optical component from the light source onto the photodetector. An OWC transmitter and an OWC system are also disclosed.

Systems and methods are disclosed herein that include a polarization sorting metasurface microlens array device. In a particular embodiment, a polarization imaging device is provided. A polarization imaging apparatus includes: an image light source; a metasurface lenslet array including a plurality of repeating metasurface lenslets, where the plurality of repeating metasurface lenslets include a plurality of first metasurface lenslets configured to diffract image light into first polarized light in a first direction and second polarized light in a second direction; and an image sensor in an optical path of the first polarized light and the second polarized light, and wherein the image sensor includes a plurality of image sensing units including a first image sensing unit positioned to sense the first polarized light and a second image sensing unit positioned to sense the second polarized light.

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.

Provided are: an observation optical system suitable for observation / measurement of the inner diameter of a pore even when the diameter thereof is narrow; and a measurement device suitable for using the optical system.　This observation optical system according to the present invention comprises, in order from the object side, at least: a reducing lens system that has an angle of view of at least 120 degrees and that comprises a first lens group having a negative refractive power and a second lens group having a positive refractive power; and a magnifying lens system that magnifies an object image from the reducing lens system and forms an image on an imaging element, and that comprises a third lens group having a positive refractive power and a fourth lens group having a negative refractive power. The magnifying lens system is characterized by: generating pincushion distortion that cancels barrel distortion generated in the reducing lens system; and restricting the distortion generated by the entire observation optical system, in a range from 70% to 80% of the maximum image height, to within ± 5%.

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.

A head-up display (HUD) system includes a light transmitter configured to transmit a plurality of light beams corresponding to a stereoscopic image; a multi-lens array comprising a plurality of lenslets arranged in a diffuser plane, where each lenslet has a first portion corresponding to a first area of an eye-box associated with a first eye and a second portion corresponding to a second area of the eye-box associated with a second eye; a two-dimensional (2D) scanner configured to direct each of the plurality of light beams at either the first portion or the second portion of a respective lenslet; and a HUD reflector configured to direct each light beam originating from the first portion of a respective lenslet toward the first area of the eye-box, and direct each light beam originating from the second portion of a respective lenslet toward the second area of the eye-box.

Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.

An illuminator includes a light source that emits light; a collimator that parallelizes the light emitted from the light source; a first lens array that receives the light parallelized by the collimator and includes multiple first lenslets; a second lens array that receives light emitted from the first lens array and includes multiple second lenslets; and a light condenser that focuses light emitted from the second lens array at an illuminated region. The light emitted from each of at least two of the first lenslets is incident on one of the second lenslets. A focal plane of the multiple second lenslets is located in an optical path along which the light travels and located upstream from an imaginary plane containing multiple contact points where the first lenslets adjacent to each other in the first lens array are in contact with each other.

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.

Disclosed herein are systems and methods including polarization sorting metasurface microlens array devices. In certain embodiments, a polarization imaging device is provided. The polarization imaging device includes: a source of image light; a metasurface lenslet array comprising a plurality of repeating metasurface lenslets, where the plurality of repeating metasurface lenslets comprise a plurality of first metasurface lenslets configured to diffract the image light into a first polarization light in a first direction and a second polarization light in a second direction; an image sensor positioned in the optical path of the first polarization light and the second polarization light, and where the image sensor includes a plurality of image sensing units including a first image sensing unit positioned to sense the first polarization light and a second image sensing unit positioned to sense the second polarization light.

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.

1. Name of the design product: LED small lens automotive bulb. 2. Use of the design product: For automotive lighting. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Stereogram 1.

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.

A system and method comprising a polarization sorting metasurface microlens array device are disclosed herein. In a specific embodiment, a polarization imaging device is provided. The polarization imaging device comprises a metasurface lenslet array comprising a plurality of repeating metasurface lenslets, wherein the plurality of repeating metasurface lenslets comprises a plurality of first metasurface lenslets configured to diffract image light into a first polarized light of a first direction and a second polarized light of a second direction; and an image sensor positioned in the optical path of the first polarized light and the second polarized light, wherein the image sensor comprises a plurality of image sensing units, wherein the image sensor comprises a first image sensing unit positioned to detect the first polarized light and a second image sensing unit positioned to detect the second polarized light.

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 optical system comprising: a sensor array having a field of view; an emitter array including a plurality of emitter units mounted on a surface of the common substrate and arranged in a two-dimensional array, in which each emitter unit of the plurality of emitter units is spaced apart from an adjacent emitter unit by a first pitch, and emits a light pulse having a predetermined beam divergence; and a fly-eye element spaced apart from the emitter array and configured to spread light received from each of the plurality of emitter cell elements into an entire field of view of the sensor array, the fly-eye element comprising a first lenslet array and a second lenslet array spaced apart from each other, wherein the individual lenslets in the first lenslet array and the second lenslet array are spaced apart from each other in at least one dimension by a second pitch different from the first pitch, and wherein each individual lenslet in the first lenslet array is aligned with a corresponding lenslet in the second lenslet array.

The utility model discloses a lens assembly motion structure of a double-color-temperature and double-color-rendering-index module, which comprises an array support, small round holes are arranged on the array support in an array mode, and a small lens is arranged in each small round hole. An array lens is fixed on the array bracket, and the position of the array lens corresponds to that of the small lens; a linear bearing module is arranged on the motion support, and the array support is fastened on the motion support through the linear bearing module. According to the utility model, through the structure of the motion support and the linear bearing module, accurate adjustment of the lens assembly is ensured, and the optical collimation performance is optimized.

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.