134 results about "Flat lens" patented technology

The utility model relates to a polarized lens cut-in, cut-out and autorotation mechanism based on an optical camera, and aims to solve the problem that the imaging quality is influenced by stray light of the optical camera in a photoelectric pod in a complex environment and ensure the light incoming amount of the camera in a general environment. When the polarized lens cutting-in and cutting-out device works, the cutting-in and cutting-out motor drives the cutting-in and cutting-out driving gear to rotate so as to drive the target wheel and the self-rotating lens cone and the flat lens which are arranged on the target wheel to rotate, so that cutting-in and cutting-out of the polarized lens are realized; when the polarized lens is cut into a light path, the rotation driving motor drives the rotation driving gear to rotate so as to drive the transmission gear and further drive the rotation lens cone and the polarized lens installed in the rotation lens cone to rotate, thereby realizing rotation of the polarized lens.

The utility model discloses an optical lens. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from an object plane to an image plane along an optical axis, the first lens is a negative-focal-power convex-concave lens, the second lens is a negative-focal-power concave-convex lens, the third lens is a positive-focal-power biconvex lens, and the seventh lens is a positive-focal-power biconvex lens. The fourth lens is a positive-focal-power biconvex lens, the fifth lens is a positive-focal-power biconvex lens, the sixth lens is a negative-focal-power biconcave lens or a negative-focal-power concave-flat lens, and the seventh lens is a positive-focal-power convex-concave lens; meanwhile, the focal length F of the optical lens and the distance TTL from the center of the optical axis of the object side face of the first lens to the image face are set, TTL / F is smaller than or equal to 5.5, and under the condition that it is guaranteed that the optical lens is small in size, the high pixel, the large aperture and the large angle are achieved, and the use requirements are met.

An optical system includes a light-receiving plane, a lens group, a pixel-based diaphragm, and a driving unit. The lens group is configured to direct an incident light to the light receiving plane. The pixel-based diaphragm is at an aperture stop of the lens group. The pixel-based diaphragm includes a first substrate coated with pixelated electrodes; a second substrate coated with an electrode; and an active medium layer between the first substrate and the second substrate. The driving unit is electrically coupled with the pixel-based diaphragm and configured to control the pixel-based diaphragm to have a first light transmitting pattern at a first time duration and a second light transmitting pattern at a second time duration, wherein the first light transmitting pattern is different from the second light transmitting pattern.

The invention provides a super-structure lens condenser and a microscopic imaging lighting device, and belongs to the technical field of microscopic imaging. The technical problems that a traditional Kohler illumination collecting lens is large in caliber, thickness and weight, high in price and not beneficial to light weight and miniaturization of a microscopic system are solved, the technical scheme is that the super-structure lens collecting lens achieves abrupt change of a light field phase through interaction of a micro-nano structure and the light field, and the light field phase change is achieved through the super-structure lens collecting lens. Therefore, the light propagation direction is changed, and the micro-nano structures of the plane lens and the super-structure lens condenser for realizing light beam convergence are periodically arranged according to a certain interval. The beneficial effects are that the super-structure lens is utilized to perform light beam deflection and convergence on a plane by utilizing phase mutation, the limitation that a traditional lens needs a convex surface type or a plurality of lenses to realize large numerical aperture condensation is solved, the limitation on the surface curvature and the transverse size during processing is solved, the longitudinal size of the condensing lens is reduced, and the processing efficiency is improved. And miniaturization of a microscopic imaging system is facilitated.

The invention belongs to the technical field of optical measurement, and relates to a planar dispersion lens, a spectrum confocal measurement system and a morphology measurement method. The planar dispersion lens comprises a substrate and a planar lens group. The planar lens group comprises N layers of planar super-oscillation cylindrical lenses which are stacked in the direction from the position close to the substrate to the position away from the substrate. When the broadband continuous light source vertically enters from the surface of one side, far away from the plane lens group, of the substrate, the N layers of plane super-oscillation cylindrical lenses are used for dispersing light in different wave band ranges in the broadband continuous light source respectively, and a plurality of super-resolution light sheets which are dispersed in the axial direction are generated; wherein N is greater than or equal to 2. When a light sheet generated by the planar dispersion lens designed in the scheme serves as a super-resolution sheet light source to perform spectrum confocal measurement on a sample, the inherent contradiction between an optical field of view and resolution can be effectively broken through, and the spectrum confocal measurement precision can be effectively improved by applying the light sheet to a spectrum confocal measurement system.

The invention provides a head-up display system and a vehicle, and belongs to the technical field of optics. The head-up display system comprises an image source, a first plane lens, a second plane lens and a free-form mirror. The image source includes a first display area and a second display area. The first plane lens is located on an emergent light path of the first display area, and the second plane lens is located on an emergent light path of the second display area. The optical path of light emitted by the first display area on the first plane lens is different from the optical path of light emitted by the second display area on the second plane lens. The free-form mirror is located on transmission light paths of the first plane lens and the second plane lens. Because the optical path of the light in the first plane lens is different from the optical path of the light in the second plane lens, the equivalent object distances of the first display area and the second display area are different, and the virtual image distances of two focal planes corresponding to the first display area and the second display area are different. Therefore, the head-up display system can generate two focal planes with different virtual image distances.

The invention discloses a super-resolution micro lens and a preparation method thereof. The lens comprises a photoresist spherical micro lens and a mixed substrate plane lens which are sequentially arranged from top to bottom. The specific preparation method comprises the following steps: S1, preparing a photoresist cylinder on a quartz substrate; s2, reflowing the photoresist cylinder into a micron lens by using a photoresist reflowing process; s3, preparing a mixed substrate plane lens on the surface of the to-be-detected sample; and S4, transferring the micron lens to the surface of the mixed substrate plane lens. By changing the thickness of the mixed substrate plane lens, adjustment of the amplification coefficient and the numerical aperture can be realized, and compared with a micro lens without a mixed substrate, the micro lens has higher imaging resolution. The method has a wide prospect in the technical field of optical imaging.

This application provides a soft flash structure and a mobile phone. The soft flash structure includes a soft light, a soft lens, and a light shield. The curved reflective lens section has an incident curved surface and a reflecting curved surface on opposite sides, both curved away from the planar lens section. The planar lens section has a reflecting plane on opposite sides, and the condensing lens section has a condensing reflecting surface and a light emitting surface on opposite sides. The incident curved surface, one reflecting plane, and the condensing reflecting surface are connected sequentially, as are the reflecting curved surface, the other reflecting plane, and the light emitting surface. The soft light, the curved reflective lens section, the planar lens section, and the condensing lens section are housed together within the light shield. The light emitted by the soft light is at least partially incident on the incident curved surface and reflected sequentially by the reflecting surface, the two reflecting planes, and the condensing reflecting surface, before exiting through the light emitting surface. The aforementioned soft flash structure can form a gradually softened light spot with better light uniformity.

This invention discloses an imaging device, comprising an imaging module and a mounting base. The imaging module includes a housing, a flat lens, a display, and a first slip ring. The flat lens has a first side and a second side, with the display located on the first side. Light emitted from the display passes through the flat lens on the second side to form a floating real image. The first slip ring is located at the bottom of the housing, and the display is connected to an external power source via the first slip ring. The imaging module is rotatably mounted on the mounting base. A second slip ring is provided on the surface of the mounting base facing the imaging module. When the imaging module is mounted on the mounting base, the second slip ring contacts the first slip ring to achieve electrical connection. The second slip ring is adapted to be electrically connected to an external power source. Thus, the imaging module is rotatable relative to the mounting base, allowing it to be used independently or in conjunction with the mounting base. When in conjunction with the mounting base, the imaging module can rotate 360° relative to the mounting base and can stop at any angle, facilitating user observation of the floating real image.

1. The name of this design product: Protective cap (flat lens). 2. Purpose of this design product: to be worn on the head for protection. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. This design shows a thin product, and other views are omitted.

An imaging system includes an optical stack including an image sensor and at least one planar lens, the at least one planar lens being asymmetric with respect to at least one other optical element in the image sensor or the optical stack. In some embodiments, asymmetry can operate to reduce or eliminate keystone distortion.

The utility model relates to the technical field of optical imaging, and discloses an eye movement tracking iris imaging lens which comprises a lens body, and a first lens, a second lens, a third lens and an optical filter which are sequentially arranged on the lens body in the direction from the object side to the mirror surface. The first lens, the second lens and the third lens are all aspheric lenses, the first lens is a plano-concave lens, the second lens and the third lens are both biconvex lenses, and the two sides of the optical filter are both plane lenses. The high performance of the system is ensured, a large field angle and a small aperture are provided, and the limitation of a large lens on the size of the whole machine is solved; in addition, the three-piece plastic lens is adopted, so that the overall cost of the lens is effectively reduced.

The embodiment of the utility model provides a display device and electronic equipment. According to the display device, the dimming structure is arranged on the light emitting path of the display panel, and the flat plate lens is arranged on the light emitting path of the dimming structure, so that the first included angle formed between the plane where the display panel is located and the plane where the flat plate lens is located is smaller than 45 degrees, and the longitudinal space occupied by the display panel and the flat plate lens can be reduced; the thickness of the display device is reduced; and the angle of the light emitted by the display panel can be adjusted through the dimming structure, so that the light adjusted by the dimming structure can form a clear display image after being emitted from the flat lens, and normal display of the display device is realized.

The application relates to the technical field of micro-nano optics and high-precision thin film thickness measurement, and discloses a resolution-optimized thin film thickness measurement method and system based on a metasurface, to solve the problem that the existing thin film thickness measurement method cannot realize non-contact and high resolution. The system comprises a broadband light source, a composite metasurface measurement probe, a spectrometer and a data processing unit. The composite metasurface measurement probe comprises a composite metasurface, the composite metasurface comprises a multilayer step flat lens and a single-layer metasurface, the single-layer metasurface is composed of a transparent glass substrate and a micro-nano structure array constructed above the transparent glass substrate, and the flat lens is connected with the transparent glass substrate of the single-layer metasurface. The composite metasurface is used for receiving and phase-controlling incident light of different wavelengths. The spectrometer is used for recording the light intensity distribution of reflected light changing with wavelengths, and obtaining a reflected spectrum signal. The data processing unit is used for calculating the thin film thickness according to the reflected spectrum signal. The system can improve the precision of thin film thickness measurement.

The utility model discloses a kind of miniature wide-angle lenses, it includes first lens, second lens, third lens, fourth lens, fifth lens, sixth lens and seventh lens sequentially distributed from object side to image side along optical axis, wherein: first lens is the convex-concave lens with negative optical power, wherein, the first surface of first lens close to object side is convex, and the second surface close to image side is concave;Second lens is the double convex lens with positive optical power;Third lens is the double concave lens with negative optical power;Fourth lens is the convex-concave lens with positive optical power;Fifth lens is the double convex lens with positive optical power;Sixth lens is the convex-concave lens with positive optical power;Seventh lens is the flat lens with positive optical power.In the utility model, the optical structure of seven glass lenses is used in the miniature wide-angle lens, to reduce the overall volume of miniature wide-angle lens.

The embodiment of the invention discloses a liquid lens, a lens system and a display device. In the liquid lens, a second substrate is provided with an opening; the elastic film covers the opening and is connected to the second substrate. The first substrate, the side wall, the second substrate and the elastic film define a containing cavity. The light-transmitting liquid is arranged in the accommodating cavity; the extrusion piece is located on the peripheral side of the open hole. The liquid lens has a plane lens state and a convex lens state, and when the liquid lens is in the plane lens state, the elastic film is in a plane shape; when the liquid lens is in a convex lens state, the extruding piece extrudes the light-transmitting liquid, the light-transmitting liquid extrudes the elastic film, and the elastic film protrudes out of the second substrate and is in a convex curved surface shape. According to the liquid lens, the extruding part is adopted to extrude the light-transmitting liquid, so that the light-transmitting liquid extrudes the elastic film to protrude, and at the moment, the light-transmitting liquid is in a convex lens shape. The protruding amount of the elastic film can be adjusted according to the extrusion degree of the extrusion piece on the light-transmitting liquid, and therefore zooming of the lens is achieved.

The utility model relates to the technical field of lenses, and provides a lens and a light source device. The lens comprises a lens body, the lens body is a plano-convex lens, and the lens body is provided with a convex surface and a bottom plane. An accommodating groove and a reflecting groove which are recessed towards the interior of the lens body are respectively formed in the bottom plane of the lens body; the containing groove is located in the middle of the bottom plane and used for containing the light source assembly, the reflection groove is located in at least one side of the two opposite sides of the containing groove, the inner wall of the reflection groove forms a reflection face, and the reflection face is used for reflecting light rays, emitted to the reflection groove, of the light source assembly; the inner wall of the reflecting groove forms a reflecting surface, so that light rays with large light emitting angles on the two sides of the light source assembly can be well restrained, the color of the light rays is uniform after the light rays are emitted through the lens, and the light mixing effect is improved.

The application discloses a light paper-based planar lens for electromagnetic wave beam steering and a planar antenna thereof, and belongs to the technical field of antennas. The paper-based main body is formed by surrounding a periodic interval arranged cavity structure with a sheet-shaped paper-based body, and has two opposite planes, i.e. an incident plane and an emission plane of electromagnetic waves; the sheet-shaped paper-based body is distributed with symbol units of a film-shaped metal material; the symbol units are compared with the metal surface area of the symbol units in a unit volume in the paper-based main body, and the metal surface area of a unit volume in the middle of the planar lens is greater than that of the periphery of the planar lens. The planar antenna further comprises a feed source which is installed close to the incident plane; electromagnetic waves propagate in the planar lens in a curved path and converge to be emitted out of the planar lens. When the feed source moves, the application can realize wide-angle scanning of the beam, and in a scanning range of ±50 degrees, the gain of the planar antenna decreases by less than 2dB, and very high gain and aperture efficiency can be achieved.

The invention discloses a wide-spectrum optical system and a lens, and relates to the technical field of optical imaging. The optical system comprises twelve lenses which are sequentially arranged from the object space to the image space, the fifth lens and the sixth lens form a first balsaming lens, and the seventh lens and the eighth lens form a second balsaming lens; the ninth lens, the tenth lens and the eleventh lens form a third cemented lens. The second lens, the third lens, the sixth lens, the seventh lens, the ninth lens and the eleventh lens are lenses with positive focal power, the twelfth lens is a plane lens, and the others are lenses with negative focal power. According to the wide-spectrum optical system and the lens provided by the invention, through a special optical structure consisting of twelve lenses, dispersion aberration and geometric aberration in a range of 400-1700 nanometers can be corrected at the same time, so that high-precision confocal imaging is realized, and the performance of a spectrum imaging system is remarkably improved.

The invention discloses a lamp, and belongs to the technical field of lighting appliances. According to the LED lamp, the light source chip integrating the purple lamp bead main body, the blue lamp bead main body, the yellow lamp bead main body and the white lamp bead main body is arranged, a traditional insertion piece type light changing mode is replaced, use convenience and the lighting effect are greatly improved, and through the specific optical combination of the plane lens, the concave lens and the scattering mirror, the light emitting efficiency is improved. Light rays emitted by lamp beads in different areas are calibrated and centered through a plane lens, then the divergence angle is adjusted through a concave lens, and finally the light rays are uniformly guided out through a scattering mirror, so that the common phenomena of uneven corner illumination and color separation of a multi-chip light source are effectively solved, light spots are still round and uniform under different color switching and different focal lengths, and the light quality is improved. In addition, an intelligent system integrating remote control, APP and voice control realizes non-contact convenient operation, is particularly suitable for outdoor fishing scenes with two limited hands, and has excellent environmental adaptability and operation experience.

The utility model provides a projection lens. The projection lens comprises a first lens, a second lens, a beam splitter prism, a plane lens, a reflection lens, a third lens and a modulation chip which are sequentially arranged from an object side to an image side, wherein the beam splitter prism is used for receiving and guiding light source light and image light; the first lens and the second lens are arranged on the first side surface of the beam splitter prism and are used for receiving and projecting image light emitted from the beam splitter prism; the plane lens and the reflecting lens are arranged on the second side surface of the beam splitter prism; the third lens and the modulation chip are arranged on the third side face of the beam splitter prism, and the modulation chip is used for receiving the light source light, modulating the light source light into image light and then emitting the image light to the reflection lens. The projection lens meets the condition that FOV / FNO is larger than 15.7, FOV is the maximum field angle of the projection lens, and FNO is the relative aperture F number of the projection lens. The projection lens provided by the utility model is beneficial to meeting the field angle requirement and the optical efficiency. The utility model further provides a near-to-eye display device.

This invention discloses a flat plate lens and device for multi-angle annular uniform illumination in the terahertz band, relating to the field of terahertz active imaging. By setting multiple annular grooves or constructing a randomly rough surface on the exit surface of a flat plate lens with an air hole array and a center point defect, this invention can convert a Gaussian-distributed terahertz beam irradiated by a terahertz source into a multi-angle annular uniform illumination beam. This allows the terahertz wave to illuminate the target from different angles, increasing the reflected wave signal entering the detection system. This has significant application value for terahertz waves in non-destructive testing and human security inspection. Furthermore, in a reflective terahertz active imaging system, compared to a circular beam, the annular beam can convert small-angle incident light with low imaging utilization in the central part into large-angle incident light with higher imaging utilization, thus improving energy utilization while providing multi-angle illumination.

The utility model discloses a sealing structure of an underwater lamp, and belongs to the technical field of underwater lighting devices. Comprising a lamp barrel, a front sealing ring, a plane lens, a sealing gasket, a front cover, a rear sealing ring, a rear cover plate and a cable connector, the plane lens is arranged at an opening in the front end of the lamp barrel, the front cover is tightly connected with the opening in the front end of the lamp barrel, and the sealing gasket is arranged in the front cover and arranged on the front side face of the plane lens in a pressed mode. The front sealing ring is arranged at the connecting position of the rear side face of the plane lens and the lamp barrel, the rear cover plate is located at the rear end of the lamp barrel, the side, facing the lamp barrel, of the rear cover plate is narrowed to form a boss, an opening in the rear end of the lamp barrel forms a bevel opening, the rear cover plate is arranged on the rear end face of the lamp barrel in a pressed mode through a connecting piece, and the boss is arranged on the rear end face of the lamp barrel. The boss extends into the bevel opening, the rear sealing ring is arranged at the joint of the boss and the bevel opening, and a connector reserved hole penetrating through the boss is formed in the middle of the rear cover plate. The advantages are that the waterproof performance is good; the structure is stable and durable; the assembly is convenient and efficient; and the electrical safety is high.

The invention provides a dual-frequency filtering planar lens antenna applied to satellite communication, which comprises a lens array, the lens array is composed of a plurality of lens units, each lens unit comprises a first substrate, a second substrate, a third substrate and a fourth substrate which are sequentially arranged from top to bottom, the upper surface of the first substrate is provided with a radiation patch of the dual-frequency filtering antenna, and the upper surface of the second substrate is provided with a radiation patch of the dual-frequency filtering antenna. A broadband magnetoelectric dipole is arranged on the fourth substrate, a snakelike strip line is arranged on the upper surface of the third substrate, and one end of the snakelike strip line is connected with a feed end metalized through hole of a radiation patch of the dual-frequency filtering antenna through a first vertical feed probe. And the other end of the snakelike strip line is connected with a feed arm of the broadband magnetoelectric dipole through a second vertical feed probe. The dual-band filtering antenna has the advantages that dual-band filtering and beam forming functions are achieved through the radiation patches of the dual-band filtering antenna, radiation zero points are generated on the two sides of two passbands, meanwhile, a high roll-off coefficient is kept through the snakelike strip line structure, and therefore the defects of traditional design are overcome.

This invention relates to the field of optical lens technology, and particularly to a wide-spectrum thermally ablated long-wave infrared characteristic measurement lens, comprising: an electromagnetic shielding window, a filter, a lens group, a detector protective glass, a detector filter, and a focal plane arranged sequentially along the optical axis from the object side to the image side; the lens group includes a first lens, a second lens, a third lens, and a fourth lens arranged sequentially along the optical axis from the object side to the image side; the first lens is an even-order aspherical negative lens; the second lens is an even-order aspherical positive lens; the third lens is a plano-concave even-order aspherical negative lens; and the fourth lens is a plano-convex even-order aspherical positive lens. This lens combines a wide spectral band, a large thermally ablated range, and electromagnetic shielding function, exhibiting excellent environmental adaptability and meeting the high-quality imaging requirements of different space environments. It can be applied to acquire wide-spectrum infrared characteristic data of targets in space environments.

The present invention relates to an optical system (100, 200) comprising an imaging plane lens (110) and a planar light guide (120), the optical system (100) having an object side (104) and an image side (102), wherein the light guide (120) is configured to receive illumination light (152) and provide the illumination light to the object side (104), wherein the optical system (100) is configured to allow light to be transmitted from the object side (104) through the imaging plane lens (110) to the image side (102).

The invention relates to a plane lens for an antenna feed source, which comprises a surface layer, a conductor layer and a bottom layer, the surface layer and the bottom layer are dielectric layers, and the conductor layer is clamped between the surface layer and the bottom layer; the conductor layer comprises a plurality of metal units which are arranged in a rectangular array; each metal unit is a metal sheet of a square structure, a round hole is formed in the center of each metal unit, a plurality of fan-shaped parts are evenly formed in each round hole in a spaced mode through more than two first connecting sections intersecting at the circle center, part of the fan-shaped parts are called first fan-shaped parts, and the other fan-shaped parts are called second fan-shaped parts. The number of the first fan-shaped parts and the number of the second fan-shaped parts are the same and are even, the first fan-shaped parts and the second fan-shaped parts are arranged at intervals in a staggered mode around the center of the metal unit, and the two ends of the arc edge of each second fan-shaped part are connected and conducted through a second connecting section. And the middle points of the second connecting sections on the two oppositely arranged second fan-shaped parts are connected and conducted through a third connecting section. The invention further relates to an array antenna using the plane lens for the antenna feed source.

The invention belongs to the technical field of metasurfaces and plane lenses, and particularly relates to a focusing metasurface lens with an anti-shielding function, the lens is composed of 40 * 40 units with the period of 7.5 mm, each unit comprises a top layer metal annular patch, a dielectric layer and a bottom layer metal patch, the relative dielectric constant of a dielectric substrate is 2.65, and the relative dielectric constant of the dielectric substrate is 2.65. The units realize anisotropic response through circumferential notch design, a stable 180-degree phase difference is formed by adopting a mirror image inversion structure, the 1-bit phase modulation requirement is met, the array performs phase coding in the radial direction according to an Airy function, and a hollow annular layout is adopted, so that the self-bending and self-repairing characteristics of Airy beams are effectively utilized, and the phase modulation efficiency is improved. The electromagnetic wave can bypass physical shielding of an axis area, field intensity reconstruction is realized at a set focus, and the design can remarkably improve focusing gain and energy recovery capability of a system in a shielding environment while maintaining high cross polarization conversion efficiency in Ku frequency band application of 13GHz and the like.

The utility model discloses an optical imaging device. The optical imaging device comprises a lens barrel, a lens group and a spacing element group, wherein the lens group and the spacing element group are assembled in the lens barrel. The lens group comprises a prism, the prism comprises an incident surface, a reflecting surface and an emergent surface, the incident surface is a convex surface, and the emergent surface is a plane; the lens group further comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power and a fifth lens with negative focal power which are sequentially arranged from the prism to the image side along a second optical axis. The sixth lens has negative focal power; and the seventh lens has positive focal power. The spacing element group includes a first spacing element. The optical imaging device satisfies: 3.45 lt; f12 / flt; 4.8 and 0.9 lt; f / Rg * (d1s / dgs) lt; f12 is the combined focal length of the first lens and the second lens, f is the total effective focal length of the optical imaging device, Rg is the curvature radius of the incident plane of the prism, d1s is the inner diameter of the object side surface of the first spacing element, and dgs is the clear aperture of the incident plane of the prism.

The utility model relates to the technical field of lens processing, in particular to a flushing device for a plane lens cutting process, which comprises a base, a spraying assembly and a flow guide assembly. The base is provided with a clamping mechanism, the support is provided with a sliding rail and a sliding block, and the sliding block is connected with a spraying assembly; the spraying assembly is connected with external liquid supply equipment through the spray head, the flow dividing pipe and the liquid supply pipe; the flow guide assembly comprises a flow guide groove and a liquid collecting groove, and a filter screen is arranged in the liquid collecting groove. Cooling liquid or cleaning liquid is sprayed through the spray head, chippings are effectively removed, heat accumulation is reduced, and liquid recycling and filtering are achieved through the flow guide groove and the liquid collecting groove. The lens machining quality and efficiency can be improved, material deformation or damage is avoided, the structural arrangement is reasonable, and operation is convenient and fast.