648 results about "Lens (optics)" 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.

The invention relates to the technical field of ophthalmology optics, in particular to a myopia control lens optical system integrating ray tracing and aberration correction, which comprises a wavefront phase acquisition module, a wavefront feature statistics module, a ray tracing simulation module, a microstructure form regulation and control module and a feedback control module. According to the method, accurate identification and datamation description of wavefront change under a dynamic vision condition can be realized by acquiring an eyeball wavefront phase matrix, performing gridding partition analysis and extracting local phase offset amplitude and time sequence characteristics, and a light propagation path model is constructed by combining statistical characteristics of an abnormal wavefront region; the self-adaptive compensation is carried out on the local focus deviation, and the spatial distribution optimization of the refractive index and the curvature is further realized based on the microstructure form regulation and control, so that the real-time matching of the optical parameters and the wavefront state is maintained during the processing and use of the lens, and therefore, the imaging quality is stabilized, the visual definition is improved, and the myopia control reliability is enhanced.

An overlay metrology system may include illumination optics to split illumination from an illumination source into primary and secondary illumination and direct the primary illumination to a sample including an overlay target with gratings in two or more layers and an objective lens to collect positive and negative diffraction from the constituent gratings. The system may further include collection optics to overlap the auxiliary illumination with at least some of the collected diffraction lobes to generate time-varying interference signals. The system may further include a controller to generate overlay measurements based on the time-varying interference signals.

The invention discloses a deep ultraviolet spherical catadioptric detection objective lens, and relates to the technical field of optics, the deep ultraviolet spherical catadioptric detection objective lens comprises a first lens group, a second lens group and a diaphragm, one side of the first lens group is arranged to be an object plane, the first lens group is located between the second lens group and the object plane, the first lens group is used for converging light and correcting residual aberration of the second lens group, and the diaphragm is arranged between the second lens group and the object plane. The diaphragm is arranged in the middle of the second lens group, and the second lens group and the diaphragm are used for correcting vertical axis aberrations such as coma of the system. The objective lens adopts a spherical catadioptric structure, can realize deep ultraviolet band application, has a large numerical aperture, the numerical aperture can reach 0.8, the smaller wavelength and the larger numerical aperture have higher resolution, so that smaller defects can be detected, the working distance can be greater than 10mm, and the detection precision is improved on the basis of realizing the large NA design. The length of the system is reduced, the number of original parts is reduced, only five lenses are needed, the structure is simple, and installation and detection are convenient.

A vehicle marker lighting device includes a light source. The light source has an elongate light pipe with a first end operatively coupled to the light source and a second end having a metalized surface. The light pipe further has a plurality of prism optics extending into an outside surface of the elongate body. An inner lens is operatively coupled to the light pipe to receive light reflected from the plurality of prism optics and to output the light beam.

The invention relates to the technical field of optics, and discloses a thermal lens effect testing system and method so as to improve compatibility and ensure measurement precision. The system comprises a first branch, a second branch and a third PBS, wherein the first branch and the second branch are input into a second PBS, the third PBS is positioned between a second output beam of the second PBS and a third beam expander, and a first beam quality analyzer for assisting in adjusting light spots of the two input branches is arranged on a first output beam of the second PBS; an emergent light beam of the third beam expanding lens enters a second light beam quality analyzer arranged on a second electric displacement platform through the focusing lens; a first electric displacement platform for placing a sample to be tested is arranged between the second PBS and the third PBS; and the second electric displacement platform is used for repositioning the focal point of the light beam under the assistance of the second light beam quality analyzer after the thermal lens effect of the sample to be detected on the first electric displacement platform is stable, so that the distance between the repositioned focal point and the initial focal point is determined as the focal shift amount.

This system and method of for providing a tunable orbital angular momentum system for providing higher order Bessel beams comprising: an acousto-optical deflector configured to receive an input beam, deflect a first portion of the input beam a first deflection angle relative to an axis of propagation and along an optical axis and deflect a second portion of the input beam a second deflection angle relative to the optical axis; a line generator disposed along the optical angle for receiving the first portion and the second portion of the input beam and provide an elliptical Gaussian mean; a log-polar optics assembly disposed along the optical angle for receiving the elliptical Gaussian beam and wrapping the elliptical Gaussian beam with an asymmetric ring; and, a Fourier lens configured to receive the wrapped elliptical Gaussian beam.

One or more reduced, same form, light emitting apparatus(es) spaced apart and configured to be mounted at various heights and / or spacing employ the same power consuming light source input that is covered by a symmetrical or asymmetrical redirecting linear lens optics apparatus that is configured for use in a range of mounting heights to uniformly illuminate at least one legal path of egress below. An exemplary light apparatus is a horizontally rotatable device configured to project an illuminated directional building evacuation symbol / text / image onto an illuminated egress path below.

The invention discloses a ghosting detection method, a ghosting detection device and a ghosting detection system, and belongs to the field of optics. The ghost image detection method comprises the following steps: calculating at least one actual ghost image parameter based on an obtained actual main image and an actual ghost image; performing simulation imaging on the initial image based on module parameters of the target lens module to obtain a simulation main image, at least one simulation ghost image, at least one simulation ghost image parameter corresponding to the simulation ghost image and an imaging reason corresponding to each simulation ghost image; and matching the at least one actual ghost image parameter, the at least one simulation ghost image parameter and the imaging reason corresponding to each simulation ghost image, and determining the imaging reason corresponding to each actual ghost image. According to the ghost image detection method provided by the invention, the specific reasons generated by each ghost image can be quickly and accurately determined, the calculation efficiency and precision are relatively high, the operation is simple, and the use threshold is relatively low.

The invention belongs to the technical field of optics, and particularly relates to an optical lens and electronic equipment. The optical lens comprises an aperture diaphragm and a plurality of lenses which are sequentially and coaxially arranged from an object side to an image side, the side, facing the object side, of the aperture diaphragm is provided with the plurality of lenses, and a diaphragm front lens group is formed; one side, facing the image side, of the aperture diaphragm is provided with a plurality of lenses to form a diaphragm rear lens group; the number of the lenses of the diaphragm front lens group is the same as that of the lenses of the diaphragm rear lens group, and distortion is offset symmetrically, so that reduction of optical distortion of the optical lens is facilitated; the diaphragm front lens group has negative focal power, the diaphragm rear lens group has positive focal power, the diaphragm front lens group and the diaphragm rear lens group form aberration compensation, and the imaging performance of the optical lens is improved. The lens closest to the object side has the positive focal power so as to converge off-axis light beams with a large angle, the large field angle of the optical lens is achieved, meanwhile, the clear aperture of a light path is reduced, and then miniaturization of the light path structure is achieved.

A digital adaptive optics encoder module includes an input mounting flange, a collimating lens, a bandpass filter, digital adaptive optic elements, refocusing lens, an output mounting flange, and a housing. The input mounting flange is capable of attaching to a telescope. The collimating lens is capable of expanding light from a target to fill a plurality of primary apertures. The bandpass filter has a bandwidth ranging from about 40 nm to about 100 nm. The digital adaptive optic elements include the plurality of primary apertures, an optical spreader, a focusing optic, and a detector. The refocusing lens is capable of refocusing an output from the digital adaptive optic elements onto a sensor plane. The output mounting flange is capable of attaching to an output connection. The housing encloses all of the interior components of the digital adaptive optics encoder module.

The utility model belongs to the technical field of optics, and particularly relates to a large-magnification infrared beam expanding and focusing lens, which comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged along the propagation direction of a light path, the total length of the large-magnification infrared beam expanding and focusing lens is 110mm, and the distance between the first lens and the second lens is 0mlt; l1lt; 2 mm; the distance between the second lens and the third lens is 23 mlt; l2lt; 25 mm; the distance between the third lens and the fourth lens is 52 mmlt; l3lt; 54mm, 54mm; the full field of view of the large-magnification infrared beam expanding and focusing lens is + / -0.1 degrees, the entrance pupil diameter is 60mm, and the exit pupil diameter is 7.5 mm. The total optical length of the lens is short, the number of the lenses is small, the lens has the 1550 nm wavelength signal transmitting and receiving functions at the same time, and the size and weight of an optical system are reduced; all the lenses adopt standard spherical lenses, so that the development and processing cost is reduced, and the processing, detection and adjustment difficulty of the lenses is reduced.

The invention relates to the technical field of optics, in particular to a projection lens, a projection system and electronic equipment. The projection lens comprises a first lens group, an aperture diaphragm and a second lens group which are sequentially arranged from a projection surface to an image source surface along an optical axis, the first lens group has negative focal power, and the second lens group has positive focal power; the first lens group consists of a first lens, a first sub-lens group and a diaphragm front lens which are sequentially arranged from a projection surface to an image source surface along an optical axis; the first sub-lens group comprises at least one lens with negative focal power; the first lens and the diaphragm front lens respectively have positive focal power, and the first sub-lens group has negative focal power; the second lens group consists of a diaphragm rear lens and a second sub-lens group which are sequentially arranged from the projection surface to the image source surface along the optical axis; the second sub-lens group has positive focal power and comprises a group of balsaming lenses with positive focal power, and the diaphragm rear lens has negative focal power. The focusing range of the projection lens is larger than or equal to 500 mm.

An electronic device may include a display having a waveguide that propagates image light and having optics such as a tint layer or bias lens mounted to the waveguide by a ring of adhesive. The ring may laterally surround an air cavity between the optics and the waveguide. A surface relief grating may be mounted to the waveguide within the air cavity. One or more air flow channels may be provided in the ring of adhesive and / or the optics to constrain air flow out of the air cavity on the time scale of a drop or impact event. This may configure the air cavity to maintain its volume during the event, effectively forming an air cushion for components in the air cavity. The air flow channels may pass air between the air cavity and the environment on the time scale of environmental ambient pressure changes.

The invention discloses a micro-structure lens evaluation method and a lens, and belongs to the field of ophthalmic optics. The method comprises the following steps: acquiring optical parameters of a microstructure lens and optical parameters of a reference lens, wherein the optical parameters comprise structural parameters and microstructure surface types; based on the structure parameters of the microstructure lens, the structure parameters of the reference lens, the first defocused spot size and the second defocused spot size, the evaluation coefficient of the microstructure lens is determined, the evaluation coefficient is used for representing the microstructure stimulation intensity of the microstructure lens, the first defocused spot size is the defocused spot size corresponding to the microstructure surface type of the microstructure lens, and the second defocused spot size is the defocused spot size corresponding to the microstructure surface type of the microstructure lens. The second defocused spot size is the defocused spot size corresponding to the microstructure surface type of the reference lens. According to the application, the evaluation coefficient of the microstructure lens is determined based on the optical parameters and the defocused spot size of the microstructure lens and the reference lens, so that the microstructure stimulation intensity of the lens can be directly represented through the evaluation coefficient, and the simplicity and convenience of verifying the microstructure stimulation intensity are improved.

The invention relates to a primary laser optic (1) for defining a beam path (S) of a laser beam, comprising a primary interface (2) for connecting the primary laser optic (1) to a motion unit (3), wherein the beam path (S) extends from the motion unit (3) into the primary laser optic (1); a movable deflecting mirror (4) for selectively assuming a deflection position (P1), in which the deflecting mirror (4) deflects the beam path (S), and a passing position (P2), in which the deflecting mirror (4) is outside the beam path (S); a secondary interface (5) for connecting a secondary laser optic (6) to the primary laser optic (1); and a primary focusing optic (7) with a primary lens (8) for focusing the laser beam onto a workpiece (W). The invention further relates to a method for laser processing of a workpiece with a laser optic unit (100).

The invention belongs to the technical field of infrared optics, and discloses a long-wave infrared continuous zooming microscope lens. The lens is provided with two lenses, namely a first lens and a second lens which are sequentially and coaxially arranged between an object plane and an image plane; the first lens is a meniscus positive lens of which the convex surface faces the image side, and the second lens is a meniscus positive lens of which the convex surface faces the image side; the first lens and the second lens can move between an object plane and an image plane so as to carry out high and low magnification switching. The long-wave infrared continuous zooming microscope lens can realize multi-magnification switching, and also has the characteristics of small number of lenses, large target surface and clear imaging; the working wave band is 8-12 [mu] m, the magnification factor is 0.2-0.6, the F number of the image space is 1.5, the number of pixels is 1280 * 1024, and the size of the pixels is 12 [mu] m.

The invention belongs to the field of optics, and particularly discloses a light spot shrinking device for an angle resolution scatterometer. Through the first lens, the beam shaping element and the second lens which are sequentially arranged along the light path, beam focusing, beam shaping and collimation are carried out in sequence, the collimated beam with the diameter smaller than that of the beam of the light source is formed, the collimated beam is combined with the subsequent light path, and the light spot shrinking function can be achieved at the detection end of the objective lens.

The invention relates to an asymmetric scattering myopia control lens based on human eye visual behaviors, which is applied to the technical field of eye vision optics, and has the design core that an asymmetric visual behavior mode shown by human eyes in an actual visual task is deeply integrated into the optical design of the lens. Therefore, an asymmetric optical structure with scattering intensity distribution highly matched with individual visual habits is constructed. According to the lens, scattering characteristics can be accurately configured in a specific area of the lens according to a preset human eye visual behavior data model, especially in the lower half part of the lens, namely a visual field area corresponding to near-distance tasks such as near-distance reading, writing or electronic equipment use of a wearer; the scattering intensity is higher than that of the upper half part (corresponding to a far task view field area), so that the myopia control efficiency is remarkably improved, and meanwhile, the visual comfort and definition of a wearer are effectively considered.

The invention discloses an ultraviolet lithography lens and a lithography machine, and relates to the technical field of optics, and the ultraviolet lithography lens comprises a plurality of lenses which are sequentially arranged from an object side to an image side; the focal power of the first lens, the fourth lens, the fifth lens, the sixth lens, the twelfth lens, the thirteenth lens, the nineteenth lens, the twentieth lens, the twenty-first lens and the twenty-fourth lens is negative. The focal power of the second lens, the third lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens, the fourteenth lens, the fifteenth lens, the sixteenth lens, the seventeenth lens, the eighteenth lens, the twenty-second lens and the twenty-third lens is positive, and the lenses are all spherical lenses. According to the technical scheme provided by the invention, the installation and adjustment difficulty and cost of the ultraviolet lithography lens can be greatly reduced while the precision is maintained.

An achromatic imaging optic (20) is used to image an output field (16a) along a beam path (23) of the imaging optic (20) into a target field (14) for use in DUV microlithography. The imaging optic (20) has a plurality of lenses (L1 to L13), each containing less than 5% lead oxide. At least one of the lenses (L5, L7, L9) is made of a high-dispersion optical material with an Abbe number less than 50. At least one of the lenses (L1 to L4, L6, L8, L10 to L13) is made of a low-dispersion optical material with an Abbe number greater than 50. This results in an imaging optic with simplified manufacturing. Depending on the design, the imaging optics can be part of an optical system of a projection exposure system as an illumination lens (20) or as a projection lens.

Embodiments of the present disclosure provide for a light emitting apparatus comprising a housing portion that is rotatably coupled to a base portion, wherein the housing portion is adjustable on two axes of rotation. In certain embodiments, the housing portion may be selectively disconnected from the base portion. The light emitting apparatus may comprise at least one LED operably engaged with at least one LED driver and a potentiometer to enable a selectively variable lumen output. In accordance with certain embodiments, the housing portion comprises at least one lens portion configured to enable one or more interchangeable / modifiable beam spread optics.

The invention relates to an optical element (E). This element has a plano-convex basic shape along an optical axis (oA) and comprises a first section (1) and a second section (2), each extending around the optical axis (oA), wherein the sections (1, 2) have different refractive indices. A flat surface of the first section (1) faces an object (4) to be imaged, and a convex surface of the second section (2) faces an image plane (8), such that radiation to be detected is collected at the flat surface of the first section (1), directed into the optical element (E), and the detected radiation is guided into a beam path (S) by the action of the optical element (E). The optical element (E) is characterized by the presence of a third section (3) between the first section (1) and the second section (2); the third section (3) is concave-convex, and the sections (1, 2, and 3) are directly adjacent to one another. The refractive index of the third section (3) is greater than the refractive index (3) of the second section (2), and the latter is in turn greater than the refractive index of the first section (1). The invention further relates to a lens (6) and a microscope (M).

An optical lens structure with an arrangement comprising at least two directional precision lensed optics configured to illuminate a surface coupled to a luminaire and at least one of a horizontal and a vertical surface below the luminaire.

The utility model discloses a microstructure spectacle lens and a pair of glasses, and belongs to the technical field of eye vision optics. The lens comprises a mother lens and a plurality of prism units arranged on the mother lens; the mother mirror has a geometric center, and the plurality of prism units are arranged around the geometric center; the mother mirror has a thickness direction and a radial direction perpendicular to the thickness direction; each prism unit comprises a binding surface connected with the mother lens and at least one refracting surface protruding out of the mother lens in the thickness direction; the refracting surface and the binding surface are connected with each other; the refracting surface is inclined to the thickness direction; the maximum size of the binding face in the radial direction is n mm, the maximum size of the refraction face and the binding face in the thickness direction is m mm, and n / m is larger than or equal to 10 and smaller than or equal to 3000. The prism unit is arranged to deflect the light when the incident light passes through the refracting surface of the prism unit, so that the focus is deviated from the macular center of the retina, the imaging quality is influenced, and the effect of inhibiting further occurrence and development of ametropia is achieved.

Metamaterial optics are integrated with vacuum-boundary walls of ultra-high-vacuum (UHV) cells to manipulate light in a manner analogous to various bulk optical elements including lenses, mirrors, beam splitters, polarizers, waveplate, wave guides, frequency modulators, and amplitude modulators. For example, UHV cells can have metasurface lenses formed on interior and / or exterior surfaces on one or more of their vacuum-boundary walls. Each metasurface lens can include a plurality of mesas with the same height and various cross-sectional dimensions. The uses of metasurface lenses allows through-going laser beams to be expanded, collimated or focused without using bulky refractive optics. Each metasurface lens can be formed on a cell wall using photolithographic or other techniques.

The utility model relates to the technical field of optical demonstration, and specifically discloses a multifunctional optical demonstration box comprising a demonstration box body, the outer wall of which is provided with an observation window; the demonstration mechanism is arranged on the inner wall of the demonstration box body, the demonstration mechanism comprises an isolation plate, a demonstration lens, a drainage pipe and a fixing frame, the isolation plate is fixedly connected to the inner wall of the demonstration box body, and the demonstration lens is fixedly connected to the outer wall of the isolation plate in a penetrating mode. According to the utility model, through the cooperation of the isolation plate, the demonstration lens, the drainage pipe, the fixed frame and the moving assembly, the installation and disassembly of the laser pen can be realized through screwing or loosening the bolts; the four demonstration lenses including the convex lens, the concave lens, the reflective mirror and the triangular prism are arranged in a matched mode to demonstrate optics, the illumination track can be well observed, and therefore the optical demonstration effect can be enhanced.

In a biometric identification system, a transparent body can have a curved platen surface. The curved platen surface can be removably contacted by an anatomy of a user. The anatomy can have an anatomical pattern. An illumination source can illuminate the curved platen surface with an illumination beam. The illumination beam can propagate away from the curved platen surface as a return beam having a beam pattern shaped to correspond to the anatomical pattern. An imaging lens can focus the return beam to form a real image of the beam pattern at an image location. Field-curvature-correcting sensor optics can include a sensor. The sensor can sense the real image of the beam pattern at the image location. The field-curvature sensor optics can include a planar sensor and an image-flattener lens. The field-curvature sensor optics can include a curved, convex sensor.

An optical measurement system, the optical measurement system comprises optics, wherein the optics include a collection path and an illumination path and an objective lens. The optics is configured to acquire Raman spectrums of one or more structural elements located at a measurement site of the sample while being set-up to apply one or more optics parameters that comprise an illumination angle out of a set of multiple illumination angles that correspond to a numerical aperture of the objective lens. Each of the one or more structural elements has a dimension that ranges between one tenth of nanometer to one hundred microns; an optical spectrometer; a Raman detector that is downstream to the optical spectrometer; and a control unit that is configured to determine an expected radiation pattern to be detected by the Raman detector when the optics are set-up to apply the one or more optics parameters.

The invention relates to a method for producing a structure in the volume of an at least partially transparent material using a laser beam that is moved relative to the material, such that the structure (3) in the material (1) comprises modification bubbles which are formed in a uniform periodic or random arrangement in at least one plane within the volume. The invention is characterized in that a device for emitting a focused laser beam is moved at least in phases relative to the material by means of a multi-axis robot in order to introduce predetermined structures into the inner volume of the material, wherein the device (13) for emitting the focused laser beam (S) comprises at least one laser source, a lens as focusing optics, and a laser scanner.