79 results about "Lens thickness" patented technology

Lens systems for compact digital cameras having a pop-out state and a collapsed state, the lens systems comprising: an image sensor having a sensor diagonal SD, and a lens with N≥6 lens elements L1-LN arranged along a lens optical axis (OA) starting with L1 from an object side toward an image side, each lens element Li having a respective clear aperture diameter DALi 1≤i≤N, and having in the pop-out state a field of view 35 deg<FOV<50 deg, a f number (f / #), a lens thickness TLens, a back focal length BFL, an effective focal length EFL, and a total track length TTL<20 mm, the lens having in the collapsed state a collapsed total track length c-TTL, wherein c-TTL=TLens+1 mm, wherein EFL≥10 mm, wherein f / #<2, and wherein a ratio c-TTL / EFL<0.8.

The invention relates to the field of lens thickness measurement, in particular to optical lens thickness measurement equipment. Comprising an auxiliary assembly, and a pushing assembly is installed on the auxiliary assembly; the contact point between the vacuum cylinder and the optical lens is sealed through the sealing ring, air in the vacuum cylinder is evacuated, the interior of the vacuum cylinder is in a negative pressure state, and fixed-point limiting is more stable; the inflation bag structure is filled, the concave surface of the lens is filled after the inflation bag structure is expanded, at the moment, the magnetic attraction connection state of the two sets of electromagnetic blocks is separated, and a second compression spring drives a needle head of a measuring needle to abut against the center point of the concave surface of the lens after feeling that pressure disappears; the thickness of the optical lens is measured by combining the numerical value of the third distance sensor with the numerical value of the fourth distance sensor of the vacuum cylinder, fixed-point thickness measurement can be performed through the structure in the subsequent process of facing the convex optical lens, and the thickness measurement effect of the optical lens is improved.

The utility model provides an optical lens thickness detection device which comprises a processing plate, a limiting base body is installed and connected on the inner wall of the top of the left end of the processing plate, a limiting clamping rod is rotatably connected on the inner wall of the side end of a rotating rod, and a detection base body is installed and connected on the inner wall of the top of the middle of the processing plate. Detection rods are slidably connected to the inner walls of the two ends of the reverse stripe adjusting rod, reset clamping blocks are arranged on the inner walls of one ends of the detection rods, and scale marks are arranged on the inner walls of the two ends of the detection base body. According to the optical lens thickness detection device provided by the utility model, through the arrangement of the limiting clamping rod, when lenses with different sizes are limited and clamped, the limiting processing can be automatically carried out, so that the phenomenon of position deviation in use is reduced, the thickness detection can be better carried out, and through the arrangement of the placing base body, the thickness detection accuracy is improved. And a worker can conveniently place the detected lens, so that the next procedure can be better carried out, and the practicability of the device is improved.

The invention provides an auto-collimation laser triangular lens thickness measuring device. The auto-collimation laser triangular lens thickness measuring device comprises a laser light source, a spectroscope, an emergent lens, a plane mirror, a light spot acquisition mechanism, a receiving lens and a light spot position detection mechanism, the spectroscope and the emergent lens are sequentially arranged on an emitting light path of the laser light source; the plane mirror and the light spot acquisition mechanism are respectively arranged on two sides of the spectroscope; a laser beam emitted by the laser light source irradiates the spectroscope, passes through the spectroscope and the emergent lens, then irradiates the surface of a measured object, sequentially passes through the emergent lens and the spectroscope after being reflected, and is refracted on the light spot acquisition mechanism through the spectroscope to form a first light spot; a laser beam emitted by the laser light source irradiates the spectroscope, vertically irradiates the plane mirror through refraction, and passes through the spectroscope again through reflection to form a second light spot on the light spot acquisition mechanism. According to the invention, auto-collimation can be realized, the debugging process is reduced, and the measurement precision is improved.

This disclosure relates to adjusting the thickness of an initial lens based on determined peripheral thickness or width constraints. The determined constraints identify a target area in the initial lens to be modified. The lens is then modified in this target area to satisfy the determined peripheral constraints.

The utility model discloses an optical lens for an optical fiber interferometer lens, and belongs to the field of optical lenses. An optical lens for an optical fiber interferometer lens comprises an interferometer main body lens, an optical lens assembly is fixed on one side of the interferometer main body lens, a lens mounting inner frame is fixed on the inner side of the optical lens assembly, a lens is attached to one side of the lens mounting inner frame, and the lens is fixed on the other side of the interferometer main body lens. According to the utility model, the fixing position can be rapidly adjusted according to the thickness of the lens through the fixing member, so that the optical lens can be flexibly adapted to various lenses with different thickness specifications, the universality of the lens is enhanced, and different experiment or detection requirements can be met no matter the lenses with different parameters are replaced. The optical lens assembly can be conveniently and quickly adjusted and fixed when the lens assembly is used for mounting lenses of different batches and different specifications in the production and manufacturing process, so that the stability of the overall performance of the optical lens is ensured, the whole lens assembly does not need to be replaced due to the thickness change of the lens, and the use cost and the operation complexity are reduced.

The utility model discloses an optical lens thickness grinding fixing mechanism which comprises a base, a mounting base is arranged at the top of the base, an adsorption base is fixedly connected to the center of the top of the mounting base, a suction cup is fixedly connected to the center of the adsorption base, and an electric push rod is fixedly connected to the center of the interior of the adsorption base and the center of the interior of the mounting base. The telescopic end of the electric push rod is fixedly connected with a piston, and an air hole is formed in the suction cup. The outer side wall of the adsorption base is sleeved with a movable ring. According to the utility model, the adsorption seat, the movable ring and the locking bolt are mutually matched, the adsorption seat is used for providing suction force and carrying out central positioning on the lens, meanwhile, the lens can be positioned horizontally and is not inclined, and glue is injected on the peripheral side of the bottom surface of the lens, so that the lens can be fixed in an auxiliary gluing manner, and meanwhile, a supporting layer of 1mm can be formed at the bottom of the lens; therefore, the bottom of the lens is stressed in a balanced manner, and the positioning stability of the lens is improved.

The present application relates to the technical field of optical lens detection, and particularly to an optical lens thickness accurate measurement device, comprising a rack, at least one set of placing tables are arranged on the rack to place the to-be-detected lenses; a first adjusting mechanism, the number of the first adjusting mechanism is consistent with the placing tables, each set of the first adjusting mechanism is arranged above the placing table one by one, the first adjusting mechanism comprises a mounting frame mounted on the rack, the mounting frame is slidably connected with a sliding frame, a first driving element is mounted on the mounting frame, the first driving element drives the sliding frame to slide in the vertical direction along the mounting frame, and the sliding frame is fixedly connected with a first mounting element; a second adjusting mechanism, the number of the second adjusting mechanism is consistent with the first adjusting mechanism, each set of the second adjusting mechanism is mounted on the mounting frame of the first adjusting mechanism, the second adjusting mechanism comprises a second mounting element capable of sliding relative to the first mounting element and a second driving element driving the second mounting element; a probe is mounted on the second mounting element, and the present application has the effects of high precision, high efficiency and high safety.

The invention belongs to the technical field of optical precision measurement, and particularly discloses a lens thickness measuring device and method based on opposite coaxial light path interference, which utilizes a common light path design that a 1310nm broadband low-coherence light interference system and a 1550nm narrow-band high-coherence light interference system share one reference arm, and innovatively adopts an opposite coaxial light path structure on a sample arm, so that the thickness of a lens is measured. Meanwhile, interference signals on the front surface and the rear surface of a sample lens are effectively extracted, key parameter measurement of the center thickness of the lens is integrated on a coaxial light path, the structure is simplified, and the complexity of equipment installation and debugging is reduced; the low-coherence light is used for accurately positioning the position of each surface, the high-coherence light is used as a scale for accurately measuring the distance between the surfaces, and the center thickness of the lens is calculated in combination with a specific algorithm, so that non-contact rapid high-precision measurement is realized; in addition, a grating ruler straight stepping motor is introduced to drive a sample arm light path assembly, and measurement of the center thickness of a long-distance lens or a lens group is achieved on the premise that the original scanning range of the optical delay line is kept.

The utility model discloses an optical lens thickness measuring device, which comprises a rack, a dial indicator and a supporting assembly, the dial indicator is arranged on the rack, the supporting assembly comprises a rotating seat and a plurality of trays, the rotating seat is rotatably arranged on the rack, the trays are arranged on the rotating seat along the circumferential direction, and the dial indicator is arranged on the rotating seat. And the tray is provided with a storage groove for placing the optical lens. Wherein the optical lens in any one of the accommodating grooves can rotate relative to the rack along with the rotating seat, and the moving track of the optical lens is provided with a detection position directly facing the dial indicator. The optical lenses to be detected can be placed in the containing grooves of the trays in a one-to-one correspondence mode at a time, and the optical lenses can be driven to move by rotating the rotating base, so that the optical lenses are aligned to the dial indicator one by one. The optical lens is prevented from being frequently taken and placed in the process of measuring the thickness of the optical lens, and the working efficiency of measuring the thickness of the optical lens is improved.

The present application relates to a kind of detection devices, in particular to a kind of optical lens thickness detection device.The present application provides a kind of optical lens thickness detection device with clamping function.An optical lens thickness detection device, including support chassis, limit placement frame, reference surface support, measurement surface support and scale etc.;Two support chassis are slidably connected with limit placement frame between left and right sides, reference surface support is connected in the middle on the upper side of front support chassis, measurement surface support is slidably connected with the upper side of reference surface support, scale is connected with the front side of measurement surface support, and scale is slidably connected with reference surface support.The present application is moved limit placement frame by people manually to outside, then people place optical lens between limit placement frame and the upper side of reference surface support, then people release limit placement frame, so that limit placement frame resets and clamps optical lens, so as to realize the effect of clamping optical lens.

The present invention provides a method and a device for manufacturing an eyeglass lens, which enable good application of a coating liquid to a lens surface. This method for manufacturing an eyeglass lens comprises: a coating step in which a lens substrate L and an ejection nozzle 22 are moved relative to each other in the lens radial direction X, and a coating liquid is ejected from the ejection nozzle 22 onto a lens surface L1 of the lens substrate L which rotates about a rotational axis La that extends along the lens substrate L in the lens thickness direction Y, and the lens surface is thereby coated with the coating liquid. In the coating step, the coating liquid is ejected from the ejection nozzle 22 in a state in which the nozzle axis 22a of the ejection nozzle 22 is inclined relative to the rotational axis La.

Lens systems for compact digital cameras having a pop-out state and a collapsed state, the lens systems comprising: an image sensor having a sensor diagonal SD, and a lens with N≥6 lens elements L1-LN arranged along a lens optical axis (OA) starting with L1 from an object side toward an image side, each lens element Li having a respective clear aperture diameter DALi 1≤i≤N, and having in the pop-out state a field of view 35deg<FOV<50deg, a f number (f / #), a lens thickness TLens, a back focal length BFL, an effective focal length EFL, and a total track length TTL<20 mm, the lens having in the collapsed state a collapsed total track length c-TTL, wherein c-TTL=TLens+1 mm, wherein EFL≥10 mm, wherein f / #<2, and wherein a ratio c-TTL / EFL<0.8.

The utility model discloses a measuring device for lens thickness, which relates to the technical field of lens thickness measurement and comprises a measuring device body, the measuring device body comprises a mounting plate, a digital display dial indicator is arranged on the front side of the mounting plate, and a bearing base is fixedly mounted at the bottom end of the mounting plate. A bearing table is fixedly mounted at the top of the bearing base, and transverse plates are fixedly mounted on the two sides of the bearing table. According to the utility model, the two groups of clamping rings are convenient to move in the opposite direction under the elastic acting force of the reset spring according to the size of the lens, the elastic reverse thrust of the reset spring is utilized to promote the clamping rings to be attached and extruded on the two sides of the lens, the measurement stability is promoted, and the fixed screw sleeve is arranged to rotate the clamping rings after the position of the clamping rings is adjusted. And the clamping ring moves on the outer surface of the threaded rod and abuts against the inner wall of the moving groove, the position of the clamping ring is fixed, the placement stability of the lens is further promoted, and the measurement accuracy is improved.

The utility model relates to the technical field of optical lens production, and discloses an optical lens thickness detection device which comprises a fixing mechanism, the fixing mechanism comprises a fixing bin, the fixing bin is provided with a measuring mechanism and a lens clamping mechanism, and four sliding grooves are formed in the periphery of the inner bottom wall of the fixing bin at equal angles. The lens clamping mechanism comprises a sliding seat which is connected in the sliding groove in a sliding mode. According to the utility model, the lens clamping mechanism with strong compatibility is designed, namely, a group of clamping block structures are arranged in the fixed bin and comprise four clamping blocks which are arranged in an equal-angle shape, and the synchronous driving mechanism is arranged at the bottom ends of the four clamping blocks and can drive the four clamping blocks to synchronously move towards each other or away from each other; the lens clamping and loosening device can clamp or loosen a lens in the fixing bin, can be matched with a special-shaped lens or a lens with a complex external structure for fixing, ensures that a measuring head can accurately measure along the contour of the lens, and improves the universality of equipment.

The utility model discloses an optical glass lens thickness detection device which comprises a detection table and a fixing frame, a supporting rod is fixedly connected to the center of the upper surface of the detection table, a fixing arm is fixedly connected to the left side of the upper surface of the detection table, and a detection rod is slidably connected to the center of the interior of the upper surface of the fixing arm. The front end of the detection rod is provided with scale marks. One side of the fixing frame is connected with the fixing arm through the adjusting mechanism, the fixing frame is pulled to move through the sliding rod, the fixing frame can drive the lens body in the fixing frame to freely move transversely or longitudinally, at the moment, a detection rod at the top end of the lens body is stressed, and a second spring can be extruded through a connecting disc; the bottom end of the detection rod can be pushed to be attached to the upper surface of the lens main body through the connecting disc due to the counter-acting force of extrusion of the second spring, and the lower surface of the lens main body is effectively supported in cooperation with the supporting rod, so that the thickness of each position of the optical glass lens is efficiently detected.

The invention provides an automatic lens arranging device which comprises a supporting bottom frame arranged at the bottom, a material distributing assembly arranged at the top of the supporting bottom frame and used for distributing materials according to the thickness of lenses, and a plurality of material arranging assemblies arranged at the discharging end of the material distributing assembly. The distributing assembly comprises a conveying belt used for conveying lenses, a discharging belt obliquely arranged on one side of the conveying belt and a plurality of groups of distributing assemblies which are arranged on the two sides of the discharging belt in a staggered mode and used for distributing, and each distributing assembly comprises an intercepting part which is in lap joint with the top of the discharging belt and used for intercepting the lenses and a distributing guide rail which extends out towards the side away from the discharging belt along the intercepting part; the four intercepting parts, in lap joint with the top of the discharging belt, of the material distributing assembly sequentially intercept the lenses, if the thickness of the intercepting part close to the leftmost side of the discharging belt is sequentially increased from the leftmost side to the rightmost side, the lenses with different thicknesses conveyed on the path of the discharging belt can be intercepted and are sequentially guided into the material distributing guide rail into the material distributing assembly, efficient material distributing is achieved, and the production efficiency is improved. And the structural design and the operation mode are simple, and the sheet arrangement accuracy is high.

The utility model discloses an optical lens thickness detection device, which relates to the technical field of optical lens detection, and comprises a detection disc, a material returning port is arranged on the front surface of the detection disc, a waste material port is arranged on the side surface of the detection disc, the back surface of the detection disc is fixedly connected with an air cylinder I, and the output end of the air cylinder I penetrates through the detection disc and is fixedly connected with a limiting strip I; the side face of the detection disc is fixedly connected with a second air cylinder, the output end of the second air cylinder penetrates through the detection disc to be fixedly connected with a second limiting strip, and the lower surface of the detection disc is fixedly connected with supporting legs. According to the utility model, when the optical lens is detected to be a qualified product, the first air cylinder drives the first limiting strip to move and pushes the optical lens out of the material returning opening, and when the optical lens is detected to be an unqualified product, the second air cylinder drives the second limiting strip to move and further pushes the optical lens out of the waste material opening, so that the qualified and unqualified optical lenses do not need to be manually sorted; and errors are not easy to occur.

The utility model belongs to the field of rimless glasses manufacturing, and particularly relates to an integrated adjustable glasses pile head lens fixing point which comprises a pile head body, a lens body is arranged on one side of the pile head body, a first positioning hole is formed in the surface of the lens body, and a second positioning hole is formed in one side of the pile head body. A fixing piece is arranged on one side of the pile head body. According to the utility model, the second positioning holes are formed in the parts of the traditional welding columns, the first positioning holes in the surfaces of the lens main bodies correspond to the second positioning holes, and the pile head main bodies are connected with the lens main bodies through the first fixing bolts in the fixing pieces, so that the first fixing bolts with proper lengths can be selected according to the thicknesses of lenses of different wearers; the friction force between the first fixing bolt and the lens body can be increased through the rubber sleeve, and the plug can be in threaded connection with the reserved part of the first fixing bolt to shield one end of the first fixing bolt.

Provided are a method for predicting a Vault after phakic intraocular lens and an electronic device. After a thickness of a to-be-corrected crystalline lens, and a horizontal sulcus-to-sulcus value and a vertical sulcus-to-sulcus value corresponding to the to-be-corrected crystalline lens are obtained, a diameter ICL Size and an axial position ICL Ax of a preset ICL lens are collected, an effective sulcus-to-sulcus value, a lens thickness influence factor LTF, a Vault chord height h and the Vault are sequentially calculated according to the obtained data, and whether the diameter ICL Size and the axial position ICL Ax of the currently adopted ICL lens meet the Vault requirement or not is judged according to the Vault. The predicting accuracy and precision of a lens position after ICL lens implantation is reduced, postoperative complications are reduced, and the convenience of clinical operation and the safety of ICL operation are improved.

A lens system includes a plurality of lens elements arranged from an object side to an image plane side, and a diaphragm arranged between the plurality of lens elements. The plurality of lens elements include a plurality of freeform lenses each having a freeform surface that is asymmetrical with respect to a first direction and a second direction which cross with each other. At least one freeform lens is placed on the image plane side of the diaphragm. With a lens thickness T1 in the first direction at a maximum height of an axial ray and a lens thickness T2 in the second direction at the maximum height of the axial ray, at least one freeform lens satisfying 0.3<T1 / T2<0.76 is placed on the object side of the diaphragm.

The utility model relates to the technical field of optical lens detection, in particular to an optical lens thickness detection device convenient to adjust, which comprises a base, a laser scanner, an adjusting device and a fixing device, a detection table is mounted at the top end of the base, a supporting plate is mounted at the rear end of the top wall of the base, and a top seat is mounted at the top end of the supporting plate. The laser scanner is installed at the bottom end of the top base through the adjusting device, the moving direction and distance of the laser scanner can be controlled by adjusting the rotating direction and speed of the first motor, and the laser scanner can be accurately controlled to adjust the longitudinal position by adjusting the rotating direction and speed of the second motor. The laser scanner can record thickness data of each measuring point, and after detection is completed, the collected data can be processed and analyzed through a data processing system connected with the detection device so as to evaluate parameters such as thickness distribution and uniformity of the lens.

Provided in the embodiments of the present application are an optical system and an optical display apparatus. The optical system comprises a polarization reflection element, a phase retarder and a light splitting element, which are arranged along the same optical axis, wherein the phase retarder is located between the light splitting element and the polarization reflection element. The optical system further comprises a first lens, wherein the first lens comprises a first surface and a second surface, the light splitting element being arranged on one side of the first surface, and the polarization reflection element and the phase retarder being stacked on the second surface. The first lens satisfies: |SAG / (T*D)|≤0.3, wherein D is the effective clear semi-aperture of the second surface, T is the corresponding lens thickness under the effective clear semi-aperture D, and SAG is the depth of the second surface under the effective clear semi-aperture D.

The utility model relates to the technical field of infrared lens thickness measurement, and discloses a measuring device capable of measuring the center thickness and equal-height edge thickness difference of an infrared lens, which comprises a placing platform for placing a lens to be measured and a thickness measuring assembly for measuring the thickness of the lens to be measured, the thickness measuring assembly is provided with a fixing unit capable of moving on the placing platform and a locking piece located above the fixing unit, the fixing unit is provided with a positioning part used for positioning a to-be-measured lens, and the fixing unit can be pressed on the placing platform through the locking piece. The fixing unit is used for fixing the center or the edge of the to-be-measured lens under the measuring head of the thickness measuring assembly, the fixing unit is moved on the placing platform, and the fixing unit is pressed tightly through the locking piece, so that the center or the edge of the to-be-measured lens can be adjusted to be located under the measuring head fixed on the thickness measuring assembly for thickness measurement, and the thickness of the to-be-measured lens can be accurately measured. The device can measure the center thickness or equal-height edge thickness difference of the to-be-measured lens, and is simple in structure and convenient to operate.

This invention provides an ophthalmic measurement system based on a frequency-adjusting device, comprising an OCT light source, a reference arm, a sample arm module, an optical fiber coupler, and a detector. The sample arm module integrates an optical path switching scanning device, capable of reflecting the probe light to the posterior or anterior segment of the eye. By introducing a frequency-adjusting device to dynamically adjust the optical path, maintaining a constant optical path or phase change between the A and Scan, Doppler frequency shift is achieved, enhancing detection depth without sacrificing resolution. The system can rapidly switch imaging focal points to adapt to eyes with different vision and perform refractive compensation, acquiring high-resolution OCT images. Furthermore, the system can accurately measure key parameters such as corneal curvature, thickness, anterior chamber depth, and lens thickness, effectively improving diagnostic speed. This invention overcomes the limitations of existing technologies in detection depth, imaging speed, and accuracy while ensuring image quality.

The application discloses an L-band dielectric lens and a lens antenna for satellite multi-beam communication and belongs to the technical field of communication.The lens designed by the application is a cylindrical flat plate lens and is composed of a plurality of concentric circular ring layers.Each circular ring layer is arranged in a circular ring shape around the center by fan ring structure units of the same configuration, and the dielectric constant of each layer gradually decreases from the center to the edge.Compared with a traditional flat plate lens after optical transformation, the lens can realize miniaturization without complex optical transformation, has a simple structure, the lens thickness can be adjusted at will, and the lens can be quickly prepared by using 3D printing.The fan ring structure unit combining the "Y" shape and the circular perforation shape is used as an equivalent dielectric constant model, so that the dielectric constant is closer to the ideal gradient change, and the lens is closer to the ideal effect, so that the lens can be used in the lens antenna, and the working performance is further improved.

The light and thin diopter lens comprises a negative-focal-power lens, film layers used for achieving the light splitting effect are arranged on the surfaces of the two sides of the negative-focal-power lens respectively, environment light enters from the environment side surface of the negative-focal-power lens, is reflected on the human eye side surface and then is reflected on the environment side surface again, and the light splitting effect is achieved. The light is emitted from the side surface of the human eye and finally enters the human eye for imaging; the two side surfaces of the negative focal power lens reflect the ambient light twice, so that part of the ambient light forms the turn-back light path in the negative focal power lens, and the diopter of the vision correction light path comprising the turn-back light path is matched with the vision of human eyes. According to the light and thin type diopter lens, the myopia correction function is achieved mainly through the reflecting surface of the negative-focal-power lens, the thickness of the lens can be greatly reduced, the wearing feeling and attractiveness are improved on the premise that vision correction is guaranteed, and the light and thin type diopter lens is particularly suitable for correction of high myopia of 600 degrees or above.

In some embodiments there are disclosed folded camera modules comprising a lens with 6 lens elements divided into two lens groups G1 and G2 and an effective focal length EFL, an object side-optical path folding element O-OPFE, an image side-optical path folding element I-OPFE and an image sensor, wherein G1 is located at an object side of the O-OPFE and G2 is located at an image side of the O-OPFE, wherein 8 mm<EFL<50 mm, wherein a camera module is divided into a first region having a minimum camera module region height MHM and including G1 and the O-OPFE, and into a second region having a minimum shoulder region height MHS<MHM and including the I-OPFE and the image sensor, wherein an aperture height of the lens is HL and wherein HL / MHS>0.9. In some embodiments, there are disclosed folded camera modules comprising a lens with N=4 lens elements having a lens thickness TLens and a total track length TTL, an I-OPFE and an O-OPFE, wherein the EFL is in the range of 8 mm<EFL<50 mm, and wherein TLens / TTL<0.4.

1. The name of the design product: frequency domain biometry. 2. The use of the design product: for measuring biological parameters of the eye, such as measuring axial length, central corneal thickness, corneal curvature, anterior chamber depth, pupil diameter, white-to-white distance, corneal astigmatism axis, lens thickness, retinal thickness, choroidal thickness, and calculating the power of the artificial lens to be implanted. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention provides a lens surface water mist and oil mist detection method and device, equipment and a medium, and belongs to the technical field of lens detection. Based on a multi-angle shooting lens, lens images shot at multiple visual angles are obtained; lens information of the lens image is analyzed, the lens type of the lens is obtained, and the lens area, the lens thickness and the coating color are determined; calling a plurality of lens images, and identifying and splicing circles and corresponding circle centers in the lens images by using a Hough circle; dividing the circle into at least four areas by taking the circle center as a base point, and analyzing the water mist contour area in each area of the lens image based on a contour analysis method; and dividing the circle into at least four circular ring regions, analyzing the oil color in each circular ring region through a color analysis algorithm, and calculating to obtain the oil area. According to the invention, the lens type is analyzed from multiple lens images and multiple views and targeted analysis is carried out, so that the accuracy of water mist and oil mist detection is improved, and the detection requirements are met.