46 results about "Lenslet" patented technology

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.

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.

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.

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.

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.

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.

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 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.

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.

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) including a first magnet (144), and a base (150) including a second magnet (154). The base (150) is rotationally coupled to the body (141), and configured to receive a removable loupe lens assembly (160, 170). The first magnet (144) and the second magnet (154) are configured to generate a first repulsive magnetic force and a second repulsive magnetic force. The first repulsive magnetic force rotates the base (150) in a first direction and holds the base (150) against the body (141) in a first position. The second repulsive magnetic force rotates the base (150) in a second direction and holds the base (141) against the body in a second position.

Systems and methods for adding a functional layer to a lens having a plurality of microlenses for inhibition of ametropia. The lens may include defocus incorporated multiple segments (DIMS) having a plurality of microlenses or lenslets producing refraction areas with different refraction forces. Injection molding may be utilized to add a functional layer to such a DIMS lens having a plurality of microlenses or lenslets. The functional layer may add a functional utility to the lens, including but not limited to photochromic functionality, polarization functionality, and the like.

A transparent optical module system or device comprising an optical architecture hierarchy based on a patch unit. In aspects, the transparent optical module comprises a display sparsely populated with pixels. The patch unit comprises one or more regions of display pixels, or a pixel pattern(s), and an associated lenslet, for example on a microlens array. The lenslet is capable of transmitting display-emitted light to an eye of the wearer of the transparent optical module, which then focuses the light to form a retinal image, which is seen or perceived by the wearer. The patch units can be combined further into patch groups, wherein members of a group serve a similar role in retinal image production as a patch unit and / or lenslet. This hierarchy allows the system to be scaled to larger and more complex systems.

A wavefront sensor is disclosed for measuring a wavefront. The sensor can include a mask configured to receive incident light of the wavefront and including irregularly spaced apertures that respectively transmit sub-beams of the incident light. A lenslet array can be positioned to receive sub-beams of the incident light from the mask so that individual lenslets of the lenslet array collect and focus the sub-beams of incident light. A camera can be included and positioned in a focal plane of the mask and the lenslet array, the camera configured to obtain a digital image of the lenslet array and / or the mask related to the incident light. A system controller can measure the wavefront of the incident light based at least partially on the digital image.

Systems and methods are provided for ultrafast light field tomography (LIFT), a transient imaging strategy that offers a temporal sequence of over 1000 and enables highly efficient light field acquisition, allowing snapshot acquisition of the complete two, three or four-dimensional space and time. The apparatus transforms targets in object space into parallel lines in the image plane with a cylindrical lens. Beam projections are optionally directed through a Dove prism and an array of cylindrical lenslets to an imaging device such as a SPAD camera, streak camera and CCD camera. By using an array of cylindrical lenslets oriented at distinct angles, enough projections are obtained simultaneously to recover the image with a single snapshot. The time-resolved system and methods were adapted to LIDAR, hyperspectral, non-line-of-sight, and three-dimensional transient imaging.

The utility model relates to an optical fiber output head of a high-power laser, which sequentially comprises a dodging rod, a first lens, a plurality of second lenses arranged on a lens fixing seat and a plurality of insertion cores axially corresponding to the second lenses respectively from the front end to the rear end, an optical fiber is inserted in each insertion core, the positions of the first lens and the plurality of second lenses are set as follows: the combined focus of the second lenses and the first lens and the focus of the first lens are both on the rear end surface of the light homogenizing rod, and the first lens focuses light from the plurality of second lenses to the rear end of the light homogenizing rod. According to the utility model, the large lens and the uniformly distributed small lenses are matched for use, so that small-size light spots can be obtained; meanwhile, glue is not used in the insertion core, so that the temperature of the output head is obviously reduced, the temperature rise caused by the glue contained in the output head is avoided, and the problem that the insertion core head is cracked due to more heat generated by high-power laser is avoided.

An imaging lens is provided and includes a lens barrel and a plurality of lenses received in the lens barrel. The plurality of lenses include at least a first lens and a second lens arranged sequentially from an object side to an image side, where the second lens has an outer diameter 1.1 times or more than an outer diameter of the first lens, and the first lens is fixedly connected to the lens barrel by first fixing glue. The imaging lens of the present disclosure is suitable for the imaging lens with large difference in lens size, and the problem of yield reduction caused by deformation during lens assembly can be improved by gluing and fixing the lens with smaller lens size, so that the weight of the imaging lens is lighter and the cost is low.

1. Name of the designed product: small lens of spectacle lens. 2. Use of the designed product: the whole product is used as a spectacle lens, and the part is used as a small lens of the spectacle lens. 3. Design points of the designed product: the shape, pattern and combination of the product parts shown by solid lines. 4. Picture or photo best indicating the design points: perspective view. 5. Other circumstances or explanations: the part shown by the dashed line in the view does not constitute a part of the claimed design.

A fiber support assembly includes: a first glass tube, wherein the first glass tube is attached to a microlens or lenslet of a microlens or lenslet array; a second glass tube at least partially disposed within the first glass tube; and a gain fiber disposed within the second glass tube, wherein the gain fiber has a first tapered end cap, and wherein the gain fiber with the first tapered end cap is aligned to the microlens or lenslet attached to the first glass tube. The fiber support assembly may further include: a pump fiber disposed within the second glass tube, wherein the pump fiber has a second tapered end cap; and a reflector configured to receive counter-pumping light from the pump fiber and direct the counter-pumping light to the first tapered end cap of the gain fiber.

Certain embodiments provide an arm assembly for a wide angle viewing system for an ophthalmic microscope. The arm assembly comprises an articulated arm configured to be coupled to a reduction lens module, and a loupe lens turret coupled to the articulated arm. The loupe lens turret comprises a body including a first magnet, and a base including a second magnet. The base is rotationally coupled to the body, and configured to receive a removable loupe lens assembly. The first magnet and the second magnet are configured to generate a first repulsive magnetic force and a second repulsive magnetic force. The first repulsive magnetic force rotates the base in a first direction and holds the base against the body in a first position. The second repulsive magnetic force rotates the base in a second direction and holds the base against the body in a second position.

The utility model discloses a lighting device and a vehicle, and belongs to the technical field of lighting devices.The lighting device comprises a light-emitting assembly, a first lens and a lens assembly, and the light-emitting assembly comprises a plurality of light sources; the first lens and the light-emitting assembly are arranged at intervals. The lens assembly is connected to the side, close to the first lens, of the light-emitting assembly and comprises a plurality of second lenses, and light emitted by the light source is emitted to the first lens through the second lenses; wherein each second lens is provided with a first surface deviating from the light source, each second lens is at least connected with the other second lens, and the first surfaces of the two mutually connected second lenses are mutually connected. According to the lighting device, the multiple second lenses are connected with one another to reduce the size of the lens assembly, so that the size of the lighting device can be reduced, meanwhile, the first surfaces of the second lenses connected with one another are connected with one another to further reduce the size of the lens assembly, and therefore the size of the lighting device can be reduced.

1. Name of the designed product: main body of eyeglass lens. 2. Use of the designed product: the whole product is used as eyeglass lens, and the part is used as main body of eyeglass lens, including lenslet and the pattern of stars and planets. 3. Design points of the designed product: the shape, pattern and their combination of the product part shown by solid line. 4. Picture or photo best showing the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. Other circumstances needing to be explained: the part shown by dotted line in the view does not constitute part of the designed product.

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.

Certain embodiments provide an arm assembly for a wide angle viewing system for an ophthalmic microscope. The arm assembly comprises an articulated arm configured to be coupled to a reduction lens module, and a loupe lens turret coupled to the articulated arm. The loupe lens turret comprises a body, a base rotationally coupled to the body, and a spring coupled to the body and the base. The base is configured to receive a removable loupe lens assembly. The spring is configured to a first spring force and a second spring force. The first spring force rotates the base in a first direction and holds the base against the body in a first position. The second spring force rotates the base in a second direction and holds the base against the body in a second position.