68 results about "Refractive lens" patented technology

The invention discloses a large-aperture super-structure lens and refraction lens mixed optical system design evaluation method, which comprises the following steps: (1) carrying out ray tracing optimization design based on a phase surface of a large-aperture super-structure lens and a refraction lens to obtain a target phase equation of the phase surface of the super-structure lens; (2) establishing a metasurface unit database forming the metasurface lens, and arranging metasurface units to fit a target phase of the large-aperture metasurface lens; (3) evaluating the phase fitting degree and the imaging quality of the optical system by using a large-aperture super-structure lens full-wave simulation substitution method, and evaluating the imaging quality of the optical system by using a ray tracing method; evaluating the image quality indexes of the super-structure lens and the hybrid optical system, and if the image quality indexes meet the technical requirements, completing the design of the folding and super hybrid optical system; and if the technical requirements are not met, returning to the step (1) to carry out design optimization. By using the method provided by the invention, the imaging quality of the super-structure lens in the hybrid system can be effectively evaluated.

The application discloses a radar calibration method and device, a radar device and a radar test system. The radar calibration method is applied to the radar test system. The radar test system comprises a radar device and a radar calibration device. The radar calibration device comprises a multi-faceted refractive lens and a flying device. The multi-faceted refractive lens is arranged on the flying device. The method comprises the following steps: the radar device receives a transmission signal of the radar calibration device. The transmission signal is a reflection signal of the multi-faceted refractive lens to electromagnetic waves sent by the radar device. Based on the transmission signal, the actual reflection power of the radar calibration device to the electromagnetic waves is determined. When the error value between the actual reflection power and the standard reflection power of the electromagnetic waves of the radar calibration device is less than a preset threshold, it is determined that the calibration of the radar device is completed. The method can complete the calibration of the radar device based on the reflection signal of the multi-faceted refractive lens in the radar calibration device to the electromagnetic waves sent by the radar device, and ensures the accuracy of the calibration of the radar device.

The T8 lamp tube comprises a light-transmitting lamp tube body with a through cavity penetrating in the axial direction, and is characterized in that a lighting source is arranged at a port of one end of the through cavity, the irradiation direction of the lighting source faces a port of the other end of the through cavity, a refraction lens covers the lighting source, and a reflection mirror is arranged at a port of the other end of the through cavity; the refraction lens and the reflection mirror are oppositely arranged. The T8 LED lamp tube has the advantages that the structure is simple, and the problems that the light emitting direction of a traditional T8 LED lamp tube is concentrated, a dark space exists, and the beam angle is limited are fundamentally solved through the secondary optical design of refraction and reflection.

The wide-angle divergent lamp tube comprises a lamp shell, the lamp shell comprises a lens and a tube body, the lens and the tube body are vertically arranged and integrally formed, the section of the lens is in a semi-oval shape and comprises a diffusion lens on the periphery and a refraction lens with the transparent inner periphery, the section of the tube body is in a semi-circular shape, and the diffusion lens is arranged on the periphery of the tube body. A light source plate is arranged in the inner cavity of the lens and the tube body, three rows of lamp beads are arranged on the light source plate, and each row of lamp beads are linearly arranged and evenly distributed in the longitudinal direction of the tube body, so that electric energy can be efficiently converted, sufficient illumination can be generated, meanwhile, energy waste is reduced, and the electricity utilization cost is reduced.

The novel multifunctional high-refraction lens comprises a base layer, an annular limiting groove is formed in the periphery of the outer side of the base layer, arc-shaped limiting grooves are evenly formed in the outer side of the annular limiting groove at intervals, and a high-refraction layer set is arranged on the inner side of the base layer. The high-refraction layer group comprises a first high-refraction layer arranged on the inner side of the base layer, a second high-refraction layer arranged on the outer side of the first high-refraction layer and a third high-refraction layer arranged on the outer side of the second high-refraction layer; a hardening layer is arranged on the outer side of the third high-refraction layer, a blue-light-proof layer is arranged on the inner side of the base layer, a wear-resistant layer is arranged on the outer sides of the blue-light-proof layer and the hardening layer, and a waterproof layer is arranged on the outer side According to the utility model, the annular limiting grooves and the arc-shaped limiting grooves are arranged, so that the lenses and the spectacle frame are connected more tightly; and by arranging the high refraction layer group, the beneficial light of the lens is greatly enhanced.

The invention discloses an X-ray focusing optical system based on coupling of a single capillary tube and a refraction lens and a manufacturing method, and belongs to the technical field of X-ray focusing optical devices. Comprising an X-ray light source, a single-capillary X-ray lens and a two-dimensional diamond refraction lens, the two-dimensional diamond refraction lens is arranged between the X-ray light source and the single-capillary X-ray lens, and the focal points of the single-capillary X-ray lens and the two-dimensional diamond refraction lens coincide; the single-capillary X-ray lens is a paraboloid type single-capillary X-ray lens or an ellipsoid type single-capillary X-ray lens, and the two-dimensional diamond refraction lens is of a revolution paraboloid structure. The two-dimensional diamond refraction lens is adopted to replace a traditional light beam stopper, the design that the focus of the single-capillary X-ray lens and the focus of the two-dimensional diamond refraction lens coincide is combined, double focusing regulation and control of X-rays are achieved, and optical loss is greatly reduced.

The invention provides a combined rotating frequency doubling crystal point changing device, a point changing method and a laser. The combined rotating frequency doubling crystal point changing device comprises a refraction lens, a folded cavity mirror, a nonlinear crystal and an end mirror. The refraction lens is rotatably arranged, and fundamental frequency light enters the folding cavity mirror through the refraction lens and is reflected to the nonlinear crystal through the folding cavity mirror; the end mirror reflects fundamental frequency light entering the nonlinear crystal and frequency doubling light generated after the fundamental frequency light enters the nonlinear crystal, and the frequency doubling light is output through the output end of the nonlinear crystal. When the output point of the nonlinear crystal needs to be changed, the refraction lens is rotated by a certain angle, so that the light path of the fundamental frequency light refracted by the refraction lens is changed, and the incidence point of the fundamental frequency light and the output point of the frequency doubling light of the nonlinear crystal are further changed. The operation is greatly saved, and the implementation method is simple and rapid.

The invention provides a refraction and super hybrid lens and a design method thereof, and the refraction and super hybrid lens comprises a refraction lens, a diaphragm and a refraction and super lens which are sequentially arranged from an object plane to an image plane along an optical axis. Both the refraction lens and the refraction and super lens bear positive focal power; the object side surface of the super-refractive lens comprises a super-transparent surface, the image side surface of the super-refractive lens comprises an aspheric surface, and the image side surface of the super-refractive lens protrudes towards the image surface. The embodiment of the invention provides a folding and super hybrid lens and a design method thereof so as to realize miniaturization and low cost.

The invention relates to the field of laser cutting, and particularly discloses an automobile suspension swing arm laser cutting machine which comprises a main body block and a cutting head, a through hole for bearing a refractor barrel is formed in the main body block, the automobile suspension swing arm laser cutting machine further comprises a protection assembly, and the protection assembly comprises fixing plates hinged to each other and a fixing block arranged in the main body block. According to the invention, when a protection lens directly facing a refractor barrel is dirty and needs to be cleaned, the machine is stopped, two sealing cover plates on a main body block are removed, then a fixing plate in one mounting groove is overturned to a horizontal state and is pushed along the main body block, and the fixing plate in the main body block is pushed out for replacement; after replacement, the pushed-out fixing plate is turned over and fixed to the mounting groove, replacement is completed, the replaceable protection lens is mounted on the main body block in advance, the main body block does not need to be disassembled in the replacement process, the replacement speed is high, operation is easy, the shutdown time is short, and the production recovery speed is increased.

The invention belongs to the technical field of visual light equipment, and relates to a night visual function tester which comprises a shell and a controller, a dioptric lens and a display screen are arranged in the shell, two groups of holes are formed in the rear side of the shell, the display screen is arranged between the holes and the dioptric lens, and a compression motor is arranged on the inner side wall of the shell. The output end of the compression motor is connected with the refraction lens, eye movement tracking modules are arranged at the two ends of the front side of the shell correspondingly, and the compression motor, the display screen and the eye movement tracking modules are all electrically connected with the controller. Through forward and backward movement of the dioptric lens, the imaging distance can be adjusted from 0.1 m to infinity, and the night vision function testing device is suitable for night vision function testing of different myopic people; a Micro-oled display screen is adopted, so that the adjustment of the brightness of eyes from 0 to 3000nit is realized; the distance between the two dioptric lenses is adjusted through the interpupillary distance adjusting module, so that the centers of the dioptric lenses are accurately aligned with the pupil center of a testee, and the accuracy of a test result is improved.

The application provides an optical system and an optical lens working in a far-infrared wave band, which sequentially comprises, along an optical axis, from an object side to an image side: a first chalcogenide refractive lens, a superlens, and a second chalcogenide refractive lens; the first chalcogenide refractive lens and the second chalcogenide refractive lens are both positive lenses; the superlens comprises a substrate and a superstructure unit, and the superstructure unit is provided with micro-nano structures; the optical system satisfies the following condition with a unit of 1 / mm: 0.25<=n*(|C1|+|C2|)<=2.01; wherein, when n is the refractive index of the first chalcogenide refractive lens, C1 is the curvature of the front surface of the first chalcogenide refractive lens, and C2 is the curvature of the back surface of the first chalcogenide refractive lens; when n is the refractive index of the second chalcogenide refractive lens, C1 is the curvature of the front surface of the second chalcogenide refractive lens, and C2 is the curvature of the back surface of the second chalcogenide refractive lens. The optical system provided by the application can simultaneously meet the requirements of good imaging quality, small size, sufficient athermalization, and high lens processability of the optical system.

This application discloses a visible light optical system and a visible light optical lens. The visible light optical system includes a superlens, a first aspherical lens, a second aspherical lens, a third aspherical lens, and a fourth aspherical lens. The first, second, third, and fourth aspherical lenses are arranged sequentially along the optical axis from the object side to the image side. The superlens has a positive optical power. The first aspherical lens has a positive optical power, and both its object-side and image-side surfaces are convex towards the object side. The second aspherical lens has a negative optical power, and both its object-side and image-side surfaces are convex towards the image side. The third aspherical lens has a positive optical power, and both its object-side and image-side surfaces are convex towards the image side. The fourth aspherical lens has a negative optical power. The visible light optical system combines a superlens with a traditional refractive lens, giving it advantages such as low cost, small size, and excellent imaging quality.

Provided is a method of manufacturing a display apparatus, the method including providing a substrate on which a display element is disposed, forming a bank layer on the substrate, the bank layer including an opening overlapping the display element, forming a preliminary high refractive lens by coating the display element with a material for forming a high refractive lens and irradiating the material for forming the high refractive lens with ultraviolet rays, removing the bank layer, and forming a high refractive lens by performing a thermal treatment on the preliminary high refractive lens.

The embodiment of the present application provides a deep ultraviolet objective and an optical system. The deep ultraviolet objective comprises a front group lens and a rear group lens; the front group lens is arranged close to an object plane, and the front group lens has a positive refractive power; and the rear group lens has a negative refractive power. The front group lens comprises a refractive lens and at least one diffractive optical element, so as to eliminate chromatic aberration.

The application provides an optical system and an optical lens, which sequentially comprise, from an object plane of the optical system to an image plane of the optical system, a first chalcogenide refractive lens, a super lens and a second chalcogenide refractive lens; the first chalcogenide refractive lens and the second chalcogenide refractive lens are both even aspheric lenses; the first chalcogenide refractive lens is in a meniscus shape protruding towards the object plane; a first surface of the second chalcogenide refractive lens facing the object plane and a second surface of the second chalcogenide refractive lens facing the image plane both contain a concave point; the optical power of the first chalcogenide refractive lens, the optical power of the super lens and the optical power of the second chalcogenide refractive lens are all positive optical powers. The application improves the design freedom of the optical system.

The present disclosure pertains to the phakic refractive lenses such as toric lenses, an advanced posterior chamber floating phakic refractive lens (PRL) designed for the correction of severe refractive errors, including myopia, hyperopia, and astigmatism. This innovative lens can reduce or minimize complications commonly associated with traditional phakic intraocular lenses, such as intraocular pressure elevation, cataract formation, and iris pigment dispersion. The phakic refractive lenses such as the toric lenses described herein feature a buoyant, flexible structure with a central aperture to facilitate aqueous humor flow, creating a natural centering force that stabilizes the lens within the pupillary space.

An optical system, which is an optical system that images light from a display panel on a retina when combined with an eyeball, includes: a first refractive lens that collects light from the display panel; and a first diffractive lens disposed between the first refractive lens and an image forming position, in which the first diffractive lens is configured to retard a phase of light passing through an outer peripheral portion of the first diffractive lens from a phase of light passing through a central portion of the first diffractive lens.

The application discloses a kind of corrective lens design equipment, storage medium and lens, it is related to medical equipment field, for solving the problem of existing refractive correction improves visual acuity or the effect of improving visual quality is poor.Refractive lens design equipment includes acquisition device, selection device and design device, acquisition device obtains the central refractive power of target individual eyeball, selection device finds out target refractive topography from refractive topography group, central refractive power is in the central refractive power range corresponding to target refractive topography, and refractive topography describes the retinal refractive power distribution of eyeball with corresponding central refractive power in preset field angle;Design device obtains refractive power distribution correction scheme in conjunction with target refractive topography, to obtain the corrective lens for target individual.The present application combines the peripheral defocus characteristics of human eye retina to design semi-personalized lens for individual, to achieve the purpose of improving visual acuity, improving myopia prevention and control effect or improving peripheral visual quality.

Provided are a lens assembly, an image apparatus including the same, and an electronic apparatus including the lens assembly. The lens assembly includes a first refractive lens, a second refractive lens, and a meta lens arranged between the second refractive lens and an image plane, wherein the first refractive lens, the second refractive lens, and the meta lens are arranged from an object side to an image side.

The purpose of the present invention is to provide an ultra-wide angle LED module comprising: a circuit board including at least one LED; a lower case having an open upper side and having a circuit board installed therein; and an upper case coupled to the upper side of the lower case and having a refractive lens for refracting light emitted by the LED, wherein the refractive lens accommodates the LED therein and includes a light-collecting groove, which causes a first refraction of the light emitted by the LED, and a first diffused reflection unit, which is formed as a plurality of concave grooves on the opposite surface of the circuit board and causes a second refraction of the light emitted by the LED, the first diffused reflection unit being arranged to be in contact with the circuit board.

This method for producing a rotationally symmetric diffractive optical element comprises the following steps: - Placing a diopter (11) on a platform (9) in a physical vapor deposition system (5) for thin films; - Positioning a mask (3) opposite the diopter (11), the mask (3) comprising openings forming a deposition zone; - Rotating the mask (3) relative to the diopter (11); - Initiating the deposition of a thin film of predetermined radial thickness onto the diopter (11) by passing a vapor (27) of a material (13) through the deposition zone of the mask (3). Figure for the abbreviation: Fig. 1

An optical sensor assembly including a diffractive optical element (DOE) responsive to an optical input beam and a refractive lens responsive to a shaped optical beam from the DOE. The lens focuses the shaped optical beam to provide a center beam having a short focal length and an outer beam having a long focal length. A sensor is positioned in front of the long focal length and is responsive to the shaped input beam from the lens. A fiber is positioned within a center opening of the sensor so that an input facet of the fiber faces the DOE and is located at the first focal length. The sensor is positioned relative to the DOE and the position of the input beam is controlled so that the center beam impinges the input facet and the outer beam impinges the sensor.

An adjustable gain antenna including an RF emitter configured to emit an RF signal along an emitter axis. A first refractive lens having an optical axis collinear with the emitter axis and a second refractive lens having an optical axis collinear with the emitter axis with the first refractive lens located between the RF emitter and the second refractive lens. A drive mechanism mechanically linked to the first refractive lens and the second refractive lens, wherein the drive mechanism is configured to move the first refractive lens and the second refractive lens longitudinally along the emitter axis to vary a gain of the RF emitter.

The present disclosure provides a kind of anti-glare down lamp.The anti-glare down lamp described above, for installing and fixing in building main body, anti-glare down lamp includes lamp body, light emitting part and anti-glare lampshade assembly;Lamp body is formed with installation groove and the light outlet that is communicated with installation groove, light emitting part is installed in installation groove, and the light emitting end of light emitting part is set towards light outlet;Anti-glare lampshade assembly includes lampshade body, refractive lens and floodlight plate, the inner wall of lampshade body is formed with diffuse reflection layer, lampshade body is located at light outlet, refractive lens is installed at one end of lampshade body adjacent to light emitting part, and refractive lens is used to refract light to the inner wall of lampshade body, and floodlight plate is installed at one end of lampshade body away from light emitting part, to form diffuse reflection cavity together.The anti-glare down lamp described above has good anti-glare effect, to improve the use experience of user.

A telephoto lens assembly comprising a primary lens subassembly with at least one lens, designed to collect light and focus it to an intermediate focal point. The assembly further comprises a secondary lens subassembly with at least one refractive lens, designed to collect and focus light from the primary lens subassembly. The lens assembly also includes a metacorrector positioned relative to the secondary lens subassembly and responding to the focused light from the secondary lens subassembly. The metacorrector comprises a metastructure configured to correct aberrations in the light, provide focusing / defocusing performance, and / or remove residual secondary colors from the light.

The invention discloses a personalized aberration correction femtosecond laser refractive surgery system and method based on spatial light modulation, and relates to the technical field of ophthalmology medical equipment.The system comprises a femtosecond laser refractive surgery system body, a control module and a light modulation module; the control module is used for acquiring personalized aberration data to be corrected of the target eye and generating a laser energy spatial distribution model according to the personalized aberration data to be corrected of the target eye; and during light modulation, the light modulation module is connected with the control module and is used for carrying out spatial intensity modulation on a laser beam output by a femtosecond laser source of the femtosecond laser refractive surgery system body according to the laser energy spatial distribution model, and the modulated beam is incident to a target eye. The technical defect that the personalized high-order aberration of the patient cannot be effectively corrected by the existing femtosecond laser refractive lens extraction method can be solved.

A hybrid lens optical imaging system is provided herein. The hybrid lens optical imaging system includes a refractive lens having a curved front surface and a planar rear surface, a meta-optical element stack having at least one meta-optical element structure disposed on a substrate, and an image sensor having a maximum image circle diameter. The planar rear surface of the refractive lens is bonded to a front side of the meta-optical element stack, and a rear side of the meta-optical element stack is bonded to the image sensor. Additionally, a ratio of a total track length of the hybrid lens optical imaging system to the maximum image circle diameter of the image sensor is less than 1.3.

The invention discloses an optical waveguide which comprises a coupling-in grating and a coupling-out grating, and the coupling-in grating and the coupling-out grating are attached to a refractive lens. The coupling-in grating surrounds the outer side of the coupling-out grating; the light machine is used for transmitting a light beam to any position in the coupling-in grating, and light is transmitted in the coupling-in grating, is coupled out through the coupling-out grating and finally enters human eyes. The coupling-in grating does not have a determined coupling-in area, and the light machine only needs to transmit a light beam to the coupling-in grating; the optical waveguide can be directly attached to the dioptric lens, when rotation is needed, the optical waveguide can be properly rotated by a certain angle, the symmetry is almost not lost, and imaging is still in the forward direction. According to the scheme, after the grating form of the diffraction optical waveguide rotates by a certain angle, the symmetry of the diffraction optical waveguide is still not broken, and the attractiveness can be guaranteed.

The utility model belongs to the technical field of automobile accessories, and discloses an automobile ceiling projection lamp and an automobile. A PCB is installed in the fixing box, a light source lens is installed on the PCB, the PCB is electrically connected with the light source lens, a refraction lens is installed in the fixing box, a light outlet lens is installed on the side wall of the fixing box, the light source lens emits light to the refraction lens, the refraction lens reflects the light to the light outlet lens, and the light outlet lens is electrically connected with the light source lens. The light emitting lens projects light to the outer side of the fixed box, a rotating component is installed in the fixed box, and the rotating component is in transmission connection with the refraction lens; the problems that in the prior art, an atmosphere lamp of an automobile ceiling is single in display effect and time-consuming to assemble are solved.

An optical system is an optical system that forms an image of light from a display panel on a retina when combined with an eyeball, the optical system including: a first refractive lens that collects light from the display panel; and a first diffractive lens provided between the first refractive lens and an image forming position, in which the first diffractive lens is configured such that a phase of light passing through an outer peripheral portion of the first diffractive lens is delayed from a phase of light passing through a central portion of the first diffractive lens.