132 results about "Lens materials" patented technology

The invention provides double-lens coupling equipment and a double-lens coupling method, and belongs to the technical field of laser device production, the double-lens coupling equipment comprises a device tool, a lens tool, two coupling mechanisms and a detection mechanism, the lens tool is provided with two lens material waiting areas at the same time, the two lens material waiting areas can be used for placing a fast-axis collimating lens and a slow-axis collimating lens respectively, and the two lens material waiting areas can be used for placing the fast-axis collimating lens and the slow-axis collimating lens respectively; the two coupling mechanisms are arranged at the same time, coupling of one lens can be conducted through each coupling mechanism, during operation, the two coupling mechanisms conduct coupling of the fast axis collimating mirror and the slow axis collimating mirror respectively, light beam detection is conducted through the detection mechanism, and the coupling precision is ensured. Therefore, the double-lens coupling device can execute coupling of the two lenses at the same time, and the coupling efficiency is improved.

The invention provides a method 100 for separating different polymeric spectacle lens materials in a mixture comprising at least two different polymeric spectacle lens materials by separating at least one polymeric spectacle lens material of the at least two different polymeric spectacle lens materials by using their different physical behavior and / or chemical behavior, wherein the at least two different polymeric spectacle lens materials are selected from the group consisting of polyallyl carbonate, polyurea, polyurethane, polyurethane / polyurea, polycarbonate, polyepisulfide and polythiourethane. The invention further provides a method for separating at least one polythiourethane from a mixture comprising at least two different polythiourethanes by thiolysis.

The invention discloses a method for detecting the surface roughness of a perspective optical lens, and relates to the technical field of optical detection, and the method comprises the following steps: constructing an optical-image cross-domain feature migration model, so as to establish a mapping relation between the optical characteristics of the surface of the lens and the noise characteristics of an image domain; analyzing the adaptive chaotic mapping characteristics of noise associated with the roughness in the image domain, and extracting chaotic characteristic parameters reflecting the roughness; according to the method, by constructing an optical-image cross-domain feature migration model and combining a surface microdefect correction factor and a lens material constraint layer, noise modeling and an actual optical physical process are closely combined; the roughness correlation noise is analyzed through adaptive chaotic mapping and is converted into effective features, the noise feature utilization rate is increased, and information loss caused by blind denoising is avoided; by means of a double-closed-loop optimization mechanism, precision feedback is achieved, the detection precision is improved, nanoscale roughness changes can be recognized, the self-calibration capability is achieved, and the anti-interference performance is high.

The invention discloses a low-distortion athermalization correctable short-wave infrared optical system and a lens, and belongs to the technical field of optics. According to the system, an optical lens is additionally arranged at the rear end to serve as a correction lens to achieve image correction in an external field environment; passive athermalization under wide-temperature and vacuum conditions is realized through focal power distribution and material matching of each optical lens; all the lenses are set to be spherical surfaces, so that the influence of aspheric surface processing errors on system index precision, processing cost and system installation and adjustment is avoided; the system adopts a positive-negative-positive-negative-negative five-lens focal power configuration. The positive-negative-positive-negative lenses are located at the front end, and the last negative lens is located at the rear end. The five lens materials are zinc sulfide, a chalcogenide material, single crystal barium fluoride, single crystal calcium fluoride and a chalcogenide material in sequence; the correction lens is located at the rear end of the last negative lens. The short-wave infrared optical system can solve the problems that an existing short-wave infrared optical system is large in imaging distortion, or athermalization is not achieved, or image correction under the external field application condition cannot be achieved.

A process for manufacturing microlens arrays includes the following steps. A preform for a microlens array is created. The preform includes an array of first dome shapes corresponding to microlenses in the microlens array. The domes shapes may be different in size and / or shape than the final microlenses to account for subsequent manufacturing steps. Atomic layer deposition is used to deposit a conformal layer on the array of first dome shapes to create an array of second dome shapes. This can be used as a master form for manufacturing the microlens array. For example, the shape of the master may be transferred to a stamp, and the stamp pressed into lens material to create the microlens array.

The invention provides a preparation method and a structure of a waveguide side micro lens. The preparation method comprises the following steps: providing an optical waveguide block; forming an optical lens groove in the optical waveguide block; forming an anti-reflection layer to cover the optical waveguide block and the optical lens groove; forming an optical lens material above the optical waveguide block and filling the optical lens groove; removing a portion of the anti-reflection layer and the optical lens material to define a micro-lens preliminary structure; and performing a reflow process on the micro-lens preliminary structure to form a micro-lens.

The embodiment of the invention relates to a video generation method and device, equipment and a storage medium, and the method comprises the steps: receiving a video generation instruction for a target reference video input by a user, determining a corresponding target recommendation object, enabling the video generation instruction to be used for indicating the generation of a video according to the target reference video, and obtaining a target recommendation object through the analysis of the structure of the target reference video; the method comprises the steps of determining a corresponding reference sub-lens which comprises sub-lens description information corresponding to a sub-lens segment in a target reference video, generating a target sub-lens according to the reference sub-lens and a target recommendation object, determining a corresponding sub-lens material for the target sub-lens, and determining a sub-lens corresponding to the target sub-lens according to the corresponding sub-lens material. And generating a target video corresponding to the target recommendation object. According to the method and the device, the target sub-lens can be automatically generated based on the target reference video, and the target video is automatically generated based on the target sub-lens, so that a non-professional user can perform secondary creation on the reference video conveniently, the video creation efficiency is improved, and the video creation modes are enriched.

The invention provides an optical design method based on curvature attenuation improved parallel curriculum learning, and belongs to the field of optical design, and the method comprises the steps: obtaining an initial structure of an optical system in a small field of view, and setting optimization variables which comprise the curvature radius of each lens, the air interval between the lenses, the lens center thickness and the lens material; taking the geometric radius or the root mean square radius of the point sequence diagram as an evaluation function, taking the small view field as a starting point, gradually increasing a view field angle according to a view field increment until a target full view field is reached, adjusting an optimization variable by adopting a damped least square method after the view field angle is increased every time, and in the process of adjusting the optimization variable, if ray tracing fails, determining that the target full view field is reached. The curvature radius of each lens is reduced to the set proportion of the current curvature radius of the lens until the evaluation function is smaller than a set threshold value; the invention further provides an optical design system. The problem that when a large number of lenses are optimized while curriculum learning is used, along with the increase of a view field, part of the lenses cannot transmit light smoothly, and optimization cannot be continued is solved.

A method for recycling a thermoset spectacle lens material uses the vitrimerization process. The recycled thermoset spectacle lens materials obtained therefrom is also provided. The method for manufacturing a spectacle lens material which can be recycled without adding foreign material employing vitrimerization process and the spectacle lens material manufactured therefrom are also provided.

The present application relates to the field of telescope technology, and more particularly to a main focus type large aperture and large field of view telescope optical structure, comprising a main reflector and a correction lens group coaxially arranged, the correction lens group comprising a first lens to a fourth lens arranged in sequence along the reflection direction of the main reflector, the first lens and the second lens are made of the same optical lens material, the third lens and the fourth lens are made of different optical lens materials and are different from the optical lens material of the first lens; the focal length of the first lens is 45-55m, the focal length of the second lens is 0.5-0.7m, the focal length of the third lens is 0.3-0.5m, and the focal length of the fourth lens is 0.1-0.3m. The present application optimizes and improves the correction lens group, achieves basically the same optical performance and detection capability as patent CN117666094A by using only four lenses without changing the parameters of the main reflector, thereby reducing the complexity and processing difficulty of the correction lens group.

The utility model relates to the field of conveyors, in particular to a lens material box corner conveyor. The conveyor comprises a machine frame, a longitudinal horizontal conveying mechanism, a transverse horizontal conveying mechanism, a transfer conveying mechanism, a direction adjusting rotating mechanism and a material box positioning mechanism, the longitudinal horizontal conveying mechanism, the transverse horizontal conveying mechanism and the transfer conveying mechanism are installed on the machine frame, and the transfer conveying mechanism is located between the longitudinal horizontal conveying mechanism and the transverse horizontal conveying mechanism. A direction-adjusting rotating mechanism is installed on the machine frame, a movable part of the direction-adjusting rotating mechanism is connected with the transfer conveying mechanism, and a machine body of the transfer conveying mechanism is rotationally connected to the machine frame. According to the utility model, horizontal conveying is carried out in different directions through the longitudinal horizontal conveying mechanism and the transverse horizontal conveying mechanism. The transfer conveying mechanism is driven to rotate through the direction adjusting rotating mechanism, and therefore the conveying direction of the material boxes is adjusted in the transportation process. The cost is saved, and the structure is simplified.

The invention relates to the technical field of ophthalmology optics, and discloses an implantable APD implant for treating presbyopia, and the method comprises the steps: carrying out the focal power mapping of a far-sight diopter component in a target optical parameter, obtaining the basic refraction surface type data, and carrying out the layout of a near-sight diopter component annular structure, and obtaining the diffraction phase structure data; carrying out integrated aberration balance on the two kinds of data to obtain a composite optical surface type data set; converting the phase variation in the composite optical surface type data set into an initial step height by combining a lens material and an environmental medium optical constant; obtaining diffraction structure morphology parameters based on material dispersion attribute optimization; constructing a digital processing map by taking the geometric position of the surface as a processing node and taking a topology and depth evolution relationship as a processing edge; performing microstructure construction on the surface of the optical polymer substrate according to the digital processing atlas to obtain an APD implant; according to the invention, the APD implantation processing efficiency and the optical adaptability efficiency can be improved.

The application relates to a small unmanned aerial vehicle lens and a working method thereof, wherein the lens is composed of a first lens, a diaphragm, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence along the light incidence direction; the lens adopts seven lenses, the lens resolution is improved by selecting appropriate lens materials and matching appropriate aspheric surface structures, and a high-definition effect is achieved; the first lens is made of glass material, the wear resistance of the lens is improved; a large number of plastic lenses are adopted, and the advantages of light weight, small size, low cost and the like are realized; the aperture value is less than F1.6, the peripheral relative luminance is greater than 50%, the lens has large light transmission capacity; the lens has a large imaging target surface and can be adapted to multiple chips.

The present application provides an optical imaging lens, which comprises a lens barrel, a lens set arranged in the lens barrel and a plurality of spacer elements; the lens set is sequentially arranged along the optical axis from the object side to the image side as a first lens with negative focal power, the first lens image side is concave; a second lens with positive focal power, the second lens object side is convex; a third lens with negative focal power, the third lens object side is concave; a fourth lens with positive focal power, the fourth lens object side and image side are both convex; a fifth lens with negative focal power, the fifth lens image side is concave; a sixth lens with positive focal power, the sixth lens object side is convex, and the sixth lens material is glass; there is at least one spacer element between any two adjacent lenses, and the spacer element is in contact with the lens part adjacent to its object side.

The invention relates to the technical field of optical imaging, in particular to a low-cost large-aperture high-definition vehicle-mounted lens and an imaging method thereof.The optical system of the lens is composed of a first lens body, a second lens body, a third lens body, a diaphragm, a fourth lens body, a fifth lens body and a sixth lens body which are sequentially arranged from the object side to the image side along the optical axis; wherein the first lens, the second lens, the third lens, the fourth lens and the fifth lens are glass spherical lenses, and the sixth lens is a glass aspheric lens. The lens material is reasonably selected, and the focal power, the surface type and the diaphragm position of each lens are reasonably distributed, so that the lens has the advantages of large aperture, high resolution, athermalization function, large clear aperture, high light transmission capability and bright and clear imaging pictures in different light environments; meanwhile, short-wave chromatic aberration is considered, and it is guaranteed that the imaging picture does not have the purple edge phenomenon.

The application discloses a visible light wide-band long-focus lens, a camera module and a terminal device. The visible light wide-band long-focus lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along an optical axis from an object plane to an image plane; one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an ultra-surface lens, and the rest lenses are all spherical surface lenses; the application combines the five spherical surface lenses with the one ultra-surface lens, and cooperates the lens materials and optical powers, so that the total optical length of the lens is effectively compressed, and the miniaturization and light weight design is realized. Meanwhile, the relationship among the relative illumination RI , the effective area size of the ultra-surface lens D M and the optical distortion value D 0 is optimized, so that the long-focus lens has the ability of high resolution and low aberration, and especially realizes the advantages of high-resolution imaging in the visible light wide-band range.

The embodiment of the invention discloses a line scanning industrial lens. The line scanning industrial lens comprises fourteen lenses which are sequentially arranged from the object space to the image space along the optical axis. Wherein the first lens to the seventh lens form a fixed group, the eighth lens to the twelfth lens form two movable groups, the thirteenth lens and the fourteenth lens form three fixed groups, and the two movable groups move back and forth along an optical axis to realize object distance change of the line scanning industrial lens; according to the line scanning industrial lens provided by the embodiment of the invention, through matching of lens materials, reasonable distribution of focal power of each lens and adoption of a floating focusing mode, the design of the line scanning lens capable of giving consideration to low distortion, large target surface and high resolution within a working distance of 200mm-1000mm is realized, the focal length of the system is 31mm, the maximum aperture is F4, the optimal object distance is 600mm, and the distortion lt is realized; 1%, and the imaging quality can reach MTF71pl / mmgt; and 0.3.

The invention provides an optical lens, which comprises three lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; wherein the real image height IH corresponding to the maximum field angle of the optical lens and the effective focal length f of the optical lens meet the following conditions: 0.9 lt; iH / flt; and 1.35. The optical lens provided by the invention has one or more advantages of long focus, large aperture, large refractive index of lens material and the like.

An apparatus, system, process, and method for making a perforated contact lens, and the contact lens produced thereby. A first mold having a first protruding boss and a second mold having a second protruding boss are engaged with a lens-forming material contained in a mold cavity between the first and second molds. The first and second bosses abut each other in the mold cavity between the first and second molds to form a hole through the lens when the lens material is cured. The interface between the first and second bosses can be located at an intermediate position within the mold cavity between the first and second molds, so that any surface irregularities are located in the interior of the lens rather than on the outer lens surface.

The utility model discloses a fabric shading performance detection device, and belongs to the technical field of fabric detection equipment. Comprising an outer protection frame, the interior of the outer protection frame is hollow, openings are formed in the five side faces of the outer protection frame, the bottom of the outer protection frame is sealed, and a detection structure is arranged in the outer protection frame; the detection structure is arranged in the outer frame and slides up and down in the sliding rod through the top plate and the bottom plate, the top plate achieves limiting of up-down movement through the top spring, at the moment, fabric needing to be detected is placed at the top of the lens discharging cavity, and lenses meeting different scene requirements are placed in the lens discharging cavity, so that the detection accuracy is improved. And the fabric is placed at the top of the lens to achieve the effect of blocking a light source.

To provide improved camouflage using a cost-effective method.SOLUTION: The present invention relates to uses of a lens sheet as camouflaging means in various applications. Various embodiments of a lens sheet assembly, methods of fabricating the various embodiments of the lens sheet assembly, and methods of using embodiments by placing the assembly between an object to be camouflaged and an observer are disclosed. Light from an object undergoes at least one of refraction and reflection such that the object is substantially disguised from an observer.SELECTED DRAWING: Figure 16

The invention relates to the technical field of optics, and discloses an intelligent AR optical lens material capable of realizing dynamic refraction compensation, the intelligent AR optical lens material is a single solid cross-linked polymer prepared by photopolymerization reaction of a liquid photosensitive resin precursor, and the liquid photosensitive resin precursor comprises the following components by weight: 30-50 parts of a polarized functional monomer; 40-60 parts of a solid ionic conductor and a cross-linking agent; 5-15 parts of an active ion source; 0.5 to 2 parts of a photoinitiator; and the polarization functional monomer is 4-Vinylbenzo (15-crown-5), and the polarization functional monomer is 4-Vinylbenzo (15-crown-5). Refraction compensation is achieved in the mode that an electric field drives lithium ions to migrate in a solid polymer network, the response speed is only limited by the ion mobility, compared with a mechanical focusing system, the system has the millisecond-level response speed, the operation process is completely silent, the overall power consumption of equipment in a static display or vision correction application scene is remarkably reduced, and the application range is wide. And the endurance time is prolonged.

The invention discloses lens dispensing, aligning and laminating equipment, and belongs to the technical field of lens laminating equipment. Comprising a machine table, a dispensing and laminating module is arranged on the machine table, the dispensing and laminating module comprises a material tower unit, and the material table unit comprises a prism material tower and a lens material tower which are arranged in parallel; the prism material tower is sequentially provided with a prism carrying table module and a prism visual material taking unit in the advancing direction. The lens material tower is sequentially provided with a lens carrying table module and a lens visual material taking unit in the advancing direction. A fine positioning unit is arranged between the prism visual material taking unit and the lens visual material taking unit; a fitting carrier assembly is arranged below the fine positioning unit, an optical recognition alignment assembly is arranged behind the fine positioning unit, and a discharging curing unit is arranged on the side of the fine positioning unit. The lens dispensing, aligning and laminating equipment disclosed by the invention can be suitable for aligning and laminating a concave lens or a convex lens to a prism, and automatic production is realized in the whole laminating process.

An apparatus includes an intraocular pseudophakic contact lens having an optical lens formed of a lens material and multiple haptics radially extending from a peripheral edge of the optical lens and configured to be inserted under an anterior leaflet of a capsular wall in an eye in order to capture and confine the haptics under the anterior leaflet. The haptics include the lens material. Anterior surfaces of the haptics are configured to contact an inner capsular wall surface at the anterior leaflet. The anterior surface of each haptic is continuous with an anterior surface of the optical lens. Posterior surfaces of the haptics include ridges configured to contact at least one edge of an artificial intraocular lens and capture the artificial intraocular lens between the ridges. At least a portion of the posterior surface of each haptic is positioned below a posterior surface of the optical lens. The optical lens is multi-focal.

The invention discloses a mold pressing device and method for an optical lens, and belongs to the technical field of optical lens machining. An upper die, a lower die and a temperature control system; the roughness of the working surface of the upper mold is smaller than that of a target lens, and the lower mold is provided with vent holes arranged in an array; after the upper mold and the lower mold are attached, a circumferentially-closed mold pressing cavity is formed in the upper mold and the lower mold. The temperature control system is used for adjusting the temperature of the upper mold and the lower mold so as to indirectly control the temperature in the mold pressing cavity; the roughness of the working surface of the upper die is smaller than that of the target lens, a thermal forming mode is adopted to replace a traditional mechanical grinding machining mode, contact type mechanical friction does not exist in the whole forming process of lens machining, and an optical lens matched with the roughness of the working surface of the upper die can be formed; the introduction of microcracks, lattice damage and residual stress is fundamentally eliminated, the optical uniformity of the lens material is ensured, and the machining precision of the optical lens is effectively improved.

An optical system that achieves weight reduction while correcting various aberrations such as chromatic aberration at a large aperture ratio by arranging lens materials appropriately. An optical system includes, in order from an object side: a first lens group G1 having a negative refractive power; a second lens group G2 that moves along an optical axis during focusing from infinity to a short distance; and a last lens group GL that is disposed closest to the image surface side, in which an aperture diaphragm S is provided between the second lens group G2 and the last lens group GL.

An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and / or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and / or a random variation in dot size.

The application provides a long-wave athermal optical imaging lens, comprising, in sequence from an object side to an image side of a light path, a first lens of a meniscus lens with positive refractive power, a second lens of a double-concave lens with negative refractive power, a third lens of a meniscus lens with positive refractive power, and a fourth lens of a meniscus lens with negative refractive power; wherein the lens material types of the first lens, the second lens, the third lens and the fourth lens are at least three; the lens material comprises sulfide glass, ZnS crystal and germanium crystal. The application eliminates the thermal difference and the chromatic aberration of the optical system through the combination of different lens materials and the surface type design of the aspheric lens, so that the optical imaging lens can clearly image without re-focusing under the condition that the working spectrum is 8-12 mu m and the working temperature is -40 DEG C to 60 DEG C, and is suitable for application in the fields of security and protection, unmanned aerial vehicle, industrial monitoring, temperature measurement, forest fire prevention and the like.