215 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 embodiment of the invention discloses an eyepiece lens. The eyepiece lens comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an observation side to a display side along an optical axis, the first lens is a glass spherical lens with positive focal power, the second lens is a glass spherical lens with positive focal power, the third lens is a glass spherical lens with negative focal power, the fourth lens is a glass spherical lens with negative focal power, and the fifth lens is a glass spherical lens with positive focal power. According to the embodiment of the invention, an all-glass 5G structure is designed and adopted, through matching of lens materials and reasonable distribution of focal power, the eyepiece lens with long exit pupil distance, small distortion, small aberration and low cost is realized, the exit pupil distance reaches 48mm, and the distortion is less than 1.5%.

The utility model discloses a lens assembling machine and a lens assembling line. The lens assembling machine comprises a connection conveying guide rail assembly, a transverse moving module, a material suction module, a pressing module, a lens material cage lifting mechanism and a lens tray transferring mechanism. The length of the connection conveying guide rail assembly extends in the first direction, the transverse moving module is installed above the connection conveying guide rail assembly, the length of the transverse moving module extends in the second direction, and the material suction module is installed at the first end of the transverse moving module and can be driven by the transverse moving module to move to the position above a working position of the connection conveying guide rail assembly. The pressing module is installed at the second end of the transverse moving module and can be driven by the transverse moving module to move to the position above the working position of the connection conveying guide rail assembly, the lens material cage lifting mechanism is used for bearing a material cage with a lens tray, and the first end of the lens tray transferring mechanism extends to the lens material cage lifting mechanism. The second end of the lens tray transferring mechanism is located below the suction module. The lens assembling machine can realize automatic assembling of the lens.

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.

The invention provides a design method of a broadband transmission-type relay optical system. The design method is used for solving the technical problems that an existing method for selecting and building an initial structure of the relay optical system is low in efficiency, and the imaging quality of the finally generated relay optical system is unstable. The invention provides a design method of a broadband transmission-type relay optical system, and the method comprises the steps: constructing an object space telecentric initial structure with a central diaphragm, selecting a lens material pair meeting an achromatic condition according to a working waveband, taking an equal-curvature biconvex lens as an optimization starting point, and calculating the initial curvature radius of each lens; after the initial center thickness and the air space of each lens are given, modeling of the initial structure of the relay optical system is achieved, and the optimization efficiency is greatly improved; finally, the view field is gradually increased from the zero view field, the final broadband transmission-type relay optical system is obtained after iterative optimization, any relay amplification factor can be achieved through the method, and high-quality imaging in the wide waveband range is achieved.

The utility model relates to the technical field of lens processing, in particular to a fixing device for processing a tangent plane lens, and solves the problems that in the prior art, when a lens material is fixed, the whole material is inconvenient to fix, so that the stress points are too few, the stability of the material is influenced, and the quality of the material is influenced. A fixing device for tangent lens machining comprises a frame body, the inner side of the frame body is rotationally connected with a two-way screw, one side of the outer wall of the frame body is fixedly connected with a driving motor through a bolt, the two ends of the two-way screw are connected with nut seats in a screwed mode through threads, and one sides of the two nut seats are fixedly connected with fixing plates; and one side of each of the two fixing plates is fixedly connected with a telescopic rod. According to the mode provided by the utility model, the two soft cushions are close to each other, so that the side surface of a material can be clamped, the bearing plate is used for supporting the material, multi-point clamping can be carried out on the material, and the practicability is very high.

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.

To improve the consistency of performance of a contact lens between wearers.SOLUTION: An ophthalmic lens may include a first surface. The exemplary ophthalmic lens may include a second surface disposed opposite the first surface and defining a volume of lens material between the first surface and the second surface. A thickness profile of the volume of lens material may be derived from the one or more eyelid profiles such that a thickness gradient of the volume of lens material is oriented substantially orthogonal to the target eyelid margin shape.SELECTED DRAWING: Figure 1

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.

To provide a method of manufacturing a spectacle lens from lens blanks using marking technique requiring less time and labor with laser.SOLUTION: The method of manufacturing a spectacle lens from a lens material includes: a marking step (step S10) of marking an identification mark 35 for identifying the spectacle lens, and a processing information mark including a tray identification 2D code 33a used for processing the lens blanks, a tray identification code 33b, a shape line 3 and a position mark 34 on a convex surface of the lens material by forming holes or grooves using laser; and a concave surface cutting step (step S13) of reading the processing information mark and cutting the concave surface of the lens blanks on the basis of the processing information mark that is read.SELECTED DRAWING: Figure 4

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 invention discloses a high-mechanical-property orthokeratology lens material copolymer and a preparation method thereof, and relates to the technical field of high polymer materials. The used raw materials comprise a fluorosilicone material, a hydrophilic monomer, an initiator and a cross-linking agent; the method comprises the following steps: mixing a monomer and an initiator according to a preset ratio, degassing, and carrying out two-stage heating polymerization reaction in a mold. After the polymerization reaction is finished, the copolymer in the mold is taken out, and the required orthokeratology lens material copolymer with the high mechanical property can be obtained through cleaning and drying treatment. The process is simple in reaction step and short in reaction time, the reaction rate can be controlled, and the production cost of the orthokeratology lens is reduced. The copolymer has high oxygen permeability and excellent optical performance, and meanwhile, compared with common like products, the copolymer shows good mechanical performance. The composition is especially suitable for preparing myopia lenses, orthokeratology lenses (OK lenses) or rigid breathable contact lenses (RGP lenses), can provide excellent visual effects and wearing comfort, and reduces irritation to eyes.

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 invention provides a method for recycling a thermoset spectacle lens material by using vitrimerization process. The present invention also provides the recycled thermoset spectacle lens materials obtained therefrom. 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 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.

Foldable intraocular lens (IOL) having a total dioptric power and comprising an optic portion (12) having main anterior and posterior optical surfaces, and incorporating an internal optical feature (13) positioned between the main anterior and posterior optical surfaces are described. The optic portion has a diameter of greater than 6.0 mm and a maximum central cross-sectional area of less than 2 mm2 along the diameter, and the internal optical feature positively contributes to the total dioptric power of the intraocular lens. A method of forming the IOL may include: providing a foldable IOL having an optic portion comprising an optical, polymeric lens material and having an anterior surface and posterior surface and an optical axis intersecting the surfaces; and forming at least one laser-modified layer disposed between the anterior surface and the posterior surface with light pulses from a laser by scanning the light pulses along regions of the optical, polymeric material to cause changes in the refractive index of the polymeric lens material; wherein the laser-modified layer forms the internal optical feature that positively contributes to the total dioptric power of the IOL. A method of inserting the IOL into an eye may include folding the IOL, making an incision of less than 3.0 mm length, and inserting the folded IOL through the incision.

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