1846 results about "Zoom lens" patented technology

The embodiment of the invention provides an optical system, intelligent head-mounted equipment and a zooming method of the optical system. The optical system is used for the intelligent head-mounted device, and the optical system comprises an imaging module, an eyeball tracking module and a processor. The imaging module comprises a zoom lens, and the eyeball tracking module is used for acquiring eyeball watching information; the processor is used for determining zoom information according to eyeball watching information provided by the eyeball tracking module and controlling the zoom lens to zoom according to the zoom information; wherein the zoom information comprises the thickness and the curvature radius of the zoom lens.

The invention discloses a visual inspection information acquisition device and method based on a horizontal included angle calibration image, and belongs to the technical field of machine visual inspection, the device comprises an industrial camera with a zoom lens, a holder device, a fixing device, a laser ranging sensor assembly, a signal acquisition synchronizer and an image automatic calibration module; wherein the industrial camera is used for capturing a surface area image of a measured structure; the laser ranging sensor assembly is used for determining a horizontal included angle formed between the camera lens axis and the surface normal of the measured structure; the signal acquisition synchronizer is used for ensuring data acquisition consistency between the camera and the laser distance measuring sensor assembly; and the image automatic calibration module is used for correcting distortion of the image captured by the camera due to the horizontal included angle to obtain a corrected image. By adopting the technical scheme of the invention, the accuracy of the image data can be ensured, so that the health detection and monitoring efficiency and precision of the engineering structure are improved.

The invention provides a three-dimensional galvanometer correction method and laser processing equipment. The method comprises the steps of controlling a motion platform to move to a reference surface of a galvanometer assembly; determining a contour line of a circle with a preset value as a radius on a medium of the motion platform by taking the central point of the galvanometer assembly as a circle center; a plurality of first marking grids are marked on the contour line in the preset direction through laser, each first marking grid in each first marking grid corresponds to one deflection angle, and each first marking pattern corresponds to the position of one zoom lens; detecting each first marking grid based on a visual component so as to determine a first target position corresponding to the focal point of the laser from the positions of the zoom lens corresponding to the plurality of first marking patterns of each first marking grid; fitting the radius of the contour line and the first target positions corresponding to the plurality of first marking grids to obtain a first curve; and compensating the position of the zoom lens according to the first curve. By means of the method, the three-dimensional galvanometer can be accurately corrected.

The zoom lens comprises a focusing lens group, a zoom lens group and a fixed lens group which are sequentially arranged from an object plane to an image plane along an optical axis, the focusing lens group has negative focal power, the zoom lens group has positive focal power, and the fixed lens group has positive focal power. The focusing lens group comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from an object plane to an image plane; the zoom lens group comprises a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which are sequentially arranged from the object plane to the image plane; the fixed lens group includes a tenth lens. According to the zoom lens provided by the embodiment of the invention, a three-component structure is adopted, ten lenses are used, the number of the lenses in the three lens groups is set, and the focal power matching of the three lens groups and the ten lenses is further limited, so that the high-image-quality zoom lens which is small in size, large in aperture, infrared and confocal at high and low temperatures is realized, and the zoom lens can be matched with a 1 / 1.8 ''chip for use.

The invention provides a phase recovery method and a phase recovery system fusing an intensity transmission equation and angular spectrum iteration, which are applied to a data acquisition stage of visibility detection of a monitoring camera and are used for acquiring the visibility of the monitoring camera by utilizing an image acquired at a front end and using a novel iteration phase recovery algorithm fusing the intensity transmission equation. The algorithm comprises zero filling and gradient descent angular spectrum iteration for phase recovery, and phase information can be provided for a visibility detection algorithm; a monitoring camera expansion piece is designed at the front end, and zooming operation is achieved through an electric control zoom lens. According to the phase recovery method, the problems of iteration uncertainty, low convergence speed, diffraction distortion, easiness in falling into local minimum and the like of a traditional algorithm are solved; meanwhile, the front end has the advantages of being convenient and fast to install, low in cost and convenient to upgrade and maintain on the basis of not influencing the normal work of the original monitoring camera.

The invention discloses a zoom optical system, a lens module and electronic equipment, and belongs to the technical field of electronic equipment. The zoom optical system comprises a reflection assembly, a zoom lens assembly and a focusing lens assembly, the reflection assembly, the zoom lens assembly and the focusing lens assembly are arranged at intervals in the first direction, and at least one of the reflection assembly, the zoom lens assembly and the focusing lens assembly can move in the first direction; wherein the focal power of the reflection assembly and the zoom lens assembly is a positive value, and the focal power of the focusing lens assembly is a negative value.

The invention provides a zoom lens, a camera module and electronic equipment. The zoom lens comprises a first lens group, a second lens group and a third lens group which are sequentially arranged from an object side to an image side along an optical axis, the zoom lens is provided with a wide-angle end and a telephoto end, and the second lens group and the third lens group can move along the optical axis so that the zoom lens can be switched between the wide-angle end and the telephoto end in a zooming mode to achieve continuous zooming. The zoom lens further comprises a first reflecting part and a second reflecting part, the first lens group comprises a first lens and a second lens, the first lens is arranged on the object side of the first reflecting part, the second lens is arranged on the image side of the first reflecting part, and the first reflecting part is used for reflecting light from the first lens to the second lens. The second reflector is arranged on the image side of the third lens group, and the second reflector is used for reflecting the light from the third lens group to the photosensitive element. The zoom lens provided by the invention can ensure good imaging quality in the zooming process.

The utility model discloses a deformable lens, which comprises a first spherical lens group, a second spherical lens group, a first cylindrical lens group, a third spherical lens group, a second cylindrical lens group, a fourth spherical lens group and a twentieth lens which are sequentially arranged from an object space to an image space, the focal lengths of all the lens groups meet the following conditions: 1.4 lt; f (G1-G7) Y / f (G1-G7) Xlt; 1.6); 1lt; 1lt; f (G2) X / f (G1-G4) Xlt; -0.7,-0.7; -2lt;-2lt; f (G3) X / f (G1-G4) Xlt; -1.3,-1.3; 361t; 361t; f (G5) Y / f (G5-G7) Ylt; 24); 0.8 lt; f (G1-G4) X / f (G5-G7) Xlt; 1.2; 1.1 lt; 1.1 lt; f (G1-G4) Y / f (G5-G7) Ylt; and 1.7. The integrated design is adopted, so that the lens is small in size, and meanwhile, the optical performance of high resolution, low respiration, low distortion, 1.5 X high magnification and the like is obtained.

The invention discloses an intelligent monitoring method and device for a video monitoring system based on cloud edge collaboration, and relates to a video monitoring technology. An edge computing platform is deployed on one side of the video monitoring system, so that the computing load of a central cloud platform is reduced; through combination of video fault data, historical operation data and real-time operation data, a correlation index between a picture parameter and a video fault type is calculated so as to accurately determine a video picture fault reason. Constructing a panoramic canvas through equipment parameters, and constructing a panoramic background model based on historical operation data; the real-time operation data and the panoramic background model are combined to continuously monitor faults of the holder and the zoom lens, and monitoring blind areas or picture loss caused by faults of the video monitoring system are avoided; the fault evaluation platform receives the detected suspected fault data and suspected fault indexes and feeds back the suspected fault data and suspected fault indexes to the fault alarm system in time, corresponding processing measures are taken, and the reliability of the monitoring camera system can be ensured.

The invention relates to a projection zoom lens, which comprises a first fixed group, a zoom group, a second fixed group and a focusing group which are sequentially arranged along an optical axis direction, the first fixed group comprises a first lens, a second lens and a third lens, the zoom group comprises a fourth lens, a fifth lens and a sixth lens, and the focusing group comprises a fourth lens, a fifth lens and a sixth lens. The second fixed group comprises a seventh lens, an eighth lens, a ninth lens, a tenth lens and an eleventh lens, the focusing group comprises a twelfth lens, a thirteenth lens and a fourteenth lens, the first lens to the fourteenth lens are sequentially arranged in the optical axis direction, and the zooming group and the focusing group can move in the optical axis direction for focusing; the wide-angle end and the long-focal-length end of the wide-angle long-focal-length lens are combined, the focal length ranges of the wide-angle end and the long-focal-length end are reasonably set, pictures are kept clear in large-range zooming and focusing, and the wide-angle long-focal-length lens has the advantages of being small in number of moving groups, invariable in total length, simple in zooming, small in size, low in cost, free of defocusing under the environment condition of large temperature difference, stable in working performance, high in projection quality and wide in application range.

The utility model discloses a zoom lens, which comprises a first lens group with positive focal power, a second lens group with negative focal power, a third lens group with positive focal power, a fourth lens group with positive focal power and a fifth lens group with focal power, and is characterized in that the first lens group, the third lens group and the fifth lens group are fixed groups; the first lens group comprises a first lens, a second lens and a third lens; the second lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens; the third lens group comprises an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens; the fourth lens group comprises a fourteenth lens, a fifteenth lens and a sixteenth lens; the fifth lens group comprises a seventeenth lens; the second lens group moves between the object side and the image side to realize continuous zooming between a wide-angle end and a telephoto end; and the fourth lens group moves between the object side and the image side so as to realize the compensation of the image surface position change in the zooming process.

The invention discloses an all-in-one eyeball comprehensive parameter measuring instrument and a method for measuring eyeball parameters by using the same. The measuring instrument comprises a signal light source, a signal light source sample arm, a signal light source reference arm, a scale light source, a scale light source sample arm, a scale light source reference arm, an annular light source, a telecentric lens, a zoom lens group and the like, the instrument can measure biological parameter information of human eyes, corneal curvature and eyeball diopter at the same time. The device is scientific and reasonable in design, and has the advantage that the curvature, the diopter and the biological parameters of the human eyes can be simultaneously measured at one time under the non-contact and non-invasive conditions.

The zoom lens comprises a first fixed lens group, a first zoom lens group, a diaphragm, a second zoom lens group, a focusing lens group and a second fixed lens group which are sequentially arranged from an object space to an image space along an optical axis, and the focal powers are positive, negative, positive and negative in sequence; wherein the first fixed lens group comprises three lenses, and the focal powers of the three lenses are negative, positive and positive in sequence; the first zoom lens group comprises three lenses with negative focal power, negative focal power and positive focal power in sequence; the second zoom lens group comprises four lenses, and the focal powers of the four lenses are negative, positive, positive and negative in sequence; the focusing lens group comprises three lenses, and the focal powers of the three lenses are positive, positive and negative in sequence; the second fixed lens group comprises a lens, and the focal power is positive. According to the embodiment of the invention, the 14 lenses and the plate glass with a certain thickness are used, and the use requirements of small distortion, large aperture and clear imaging under the wave band of 436-656 nm can be met under the condition of adapting to a 1 / 1.2 ''target surface.

The invention discloses an unmanned aerial vehicle autonomous inspection system and method based on AI identification, the system comprises an unmanned aerial vehicle body carrying a high-power optical zoom lens, an edge computing device and a function module, and the autonomous inspection of a power distribution tower is realized by fusing front-end AI identification and edge computing technologies. A Yolo structure is adopted to construct a lightweight tower recognition model, a dynamic route planning module is combined to realize single-point reference route generation and three obstacle crossing modes, and real-time coordinate correction in an RTK-free environment is supported. The edge computing device integrates a semi-supervised learning engine and a multi-sensor data fusion module, meets miniaturization design, and supports breakpoint continuous flight control and precise landing. The method covers automatic route generation, visual tracking, zoom cooperative control and self-adaptive task scheduling, solves the problems that a traditional unmanned aerial vehicle depends on manual operation, the data quality is poor and the efficiency is low, realizes whole-course automation of tower inspection in a complex environment, and is high in inspection efficiency, and the picture definition reaches the pin level.

The invention discloses a zoom lens, which comprises a first lens group with positive focal power, a second lens group with negative focal power, a third lens group with positive focal power, a fourth lens group with positive focal power and a fifth lens group with focal power, and is characterized in that the first lens group, the third lens group and the fifth lens group are fixed groups; the first lens group comprises a first lens, a second lens and a third lens; the second lens group comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens; the third lens group comprises an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens; the fourth lens group comprises a fourteenth lens, a fifteenth lens and a sixteenth lens; the fifth lens group comprises a seventeenth lens; the second lens group moves between the object side and the image side to realize continuous zooming between a wide-angle end and a telephoto end; and the fourth lens group moves between the object side and the image side so as to realize the compensation of the image surface position change in the zooming process.

The zoom lens consists of, in order from the object side, a first lens group that has a negative refractive power; a second lens group that has a positive refractive power; a third lens group that has a negative refractive power; and a fourth lens group that has a positive refractive power. During zooming, in each lens group, distances between the adjacent groups in the direction of the optical axis are changed. The first lens group consists of, in order from the object side, a first lens having a negative refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power. The third lens group consists of a negative lens. During focusing, only the third lens group moves along the optical axis. The zoom lens satisfies predetermined conditional expressions.

To provide a zoom lens which offers high optical performance.SOLUTION: A zoom lens (1a) disclosed herein comprises a first lens group (B1) having negative refractive power, multiple lens groups (B2, B3) having positive refractive power, and a rear group including at least one lens group, arranged in order from the object side to the image side, and is configured such that the distance between each pair of adjacent lens groups changes while zooming from the wide-angle end to the telephoto end, where the multiple lens groups include a first focusing group (F1) and a second focusing group (F2) configured to move while focusing from infinity to a very short distance.SELECTED DRAWING: Figure 1

The present application provides a zoom lens and an electrical device, the zoom lens includes: lens piece set including a first optical lens piece; a lens piece bracket including a bracket main body, where in a first optical lens piece is disposed securely on the bracket main body; a lens barrel sleeved around the lens piece bracket, wherein sliding slots are defined in the lens barrel, an included angle between an extension direction of the sliding slots and a plane in which the lens piece set is located is an acute angle or obtuse angle; a focusing ring sleeved around the lens barrel, wherein guide slots are defined in the focusing ring, and an extension direction of the guide slots is perpendicular to the plane in which the lens piece set is located.

The invention discloses a visual inspection information acquisition device and method based on a pitch angle calibration image, and belongs to the technical field of machine visual inspection, the device comprises an industrial camera with a zoom lens, a holder device, a fixing device, an inclination angle sensor, a signal acquisition synchronizer and an image automatic calibration module; wherein the industrial camera is used for capturing an image of a surface area of a measured structure; the inclination angle sensor is used for determining a pitch angle formed between the camera lens axis and the surface normal of the measured structure; the signal acquisition synchronizer is used for ensuring data acquisition consistency between the industrial camera and the inclination angle sensor; and the image automatic calibration module is used for correcting distortion of the image captured by the camera due to the pitch angle to obtain a corrected image. By adopting the technical scheme of the invention, the accuracy of the image data can be ensured, so that the health detection and monitoring efficiency and precision of the engineering structure can be improved.

The zoom lens comprises a first fixed lens group, a zoom lens group, a diaphragm, a second fixed lens group, a focusing lens group and a third fixed lens group which are sequentially arranged from an object plane to an image plane along an optical axis, and the focal powers are respectively positive, negative, positive, positive, positive or negative; the first fixed lens group consists of three lenses, and the focal powers of the three lenses are respectively negative, positive and positive; the zoom lens group is composed of four lenses, and the focal power of the four lenses is negative, negative, positive and negative. The second fixed lens group consists of three lenses, and the focal powers of the three lenses are respectively positive, negative and positive; the focusing lens group consists of four lenses, and the focal powers are respectively positive, negative, positive and negative; the third fixed lens group consists of two lenses, and the focal powers of the two lenses are respectively positive and negative; each of the focusing lens group, the second fixed lens group and the third fixed lens group at least comprises an aspheric lens. The zoom lens can meet the use requirements of large aperture, high and low temperature confocal and 4K clear imaging on a 1 / 1.2 ''target surface and at the wave band of 436-870nm.

The invention discloses a zoom lens which comprises a first fixed lens group with positive focal power, a zoom lens group with negative focal power, a diaphragm, a second fixed lens group with positive focal power, a focusing lens group with positive focal power, a third fixed lens group with positive focal power and plate glass which are sequentially arranged from an object space to an image space along an optical axis, the first fixed lens group sequentially comprises a negative lens, a positive lens and a positive lens; the zoom lens group sequentially comprises a negative lens, a negative lens and a positive lens; the second fixed lens group sequentially comprises a positive lens, a negative lens, a positive lens, a negative lens, a positive lens, a negative lens and a positive lens, the front three lenses comprise at least two doublet lenses, and the rear three lenses comprise at least two doublet lenses; the focusing lens group comprises a positive lens; the third fixed lens group includes a lens having a focal power. The lens has the advantages of being large in aperture, small in distortion, long in focal length and high in imaging definition, and can meet the use requirements under the 1 / 1.2 ''target surface and the wave band of 436-850 nm.

The utility model discloses a large-magnification continuous zooming fog-penetrating lens, which comprises a front fixed lens group, a zooming lens group, a compensating lens group, a rear fixed lens group, a temperature focusing lens group and an optical filter switcher which are sequentially arranged along the light incidence direction, and is characterized in that the front fixed lens group comprises a first lens and a first gluing group; the zoom lens group comprises a fifth lens and a second gluing group, the compensation lens group comprises an eighth lens and a third gluing group, the rear fixed lens group comprises a fourth gluing group, a fifth gluing group and a fifteenth lens, and the temperature focusing lens group comprises a sixth gluing group. The optical filter switcher comprises an optical filter and an anti-reflection sheet and is used for switching the optical filter and the anti-reflection sheet in the direction perpendicular to the optical axis. By reasonably setting the parameters of each lens and the overall mechanical structure of the lens, electric four-variable functions of focal length, resolving power compensation, aperture and fog penetration are realized, the stability is good, the response speed is high, stray light ghosting can be reduced, chromatic aberration can be corrected, the imaging quality can be improved, the service life can be prolonged, and miniaturization and light weight are facilitated.

The utility model relates to an optical lens which is arranged along an optical axis from an object side to an image side. The utility model relates to a multi-lens zoom lens, which comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power, a sixth lens with negative focal power, a seventh lens with positive focal power, an eighth lens with negative focal power and a ninth lens with negative focal power in sequence, and is characterized in that the first lens with negative focal power, the second lens with negative focal power, the third lens with positive focal power, the fourth lens with negative focal power, the fifth lens with positive focal power, the sixth lens with negative focal power, the seventh lens with positive focal power and the ninth lens with negative focal power are included; the focal power of the tenth lens is positive; the focal power of the eleventh lens is positive; the first lens is a convex-concave lens, and the eleventh lens is a convex-concave lens. The optical lens provided by the utility model at least has one of the characteristics of large aperture (F1.2), infrared confocal, 2K high image quality, support of dual-optical-path imaging, distance measurement and the like.

The invention discloses an optical zoom lens and camera shooting equipment, and relates to the technical field of optical zoom systems.The optical zoom lens comprises a lens group, a plurality of voice coil motors and a position determining structure, the lens group is movably arranged in the front-back direction, and the voice coil motors are annularly arranged on the peripheral side of the lens group at intervals; each voice coil motor comprises a magnet structure and a magnetic force matching part, the magnet structure forms a magnetic field, and the magnetic force matching part is connected with the lens group and is located in the magnetic field, so that when the magnetic force matching part and the magnet structure generate magnetic force action, the magnetic force matching part drives the lens group to move in the front-back direction relative to the magnet structure; comprising a measuring part and a position determining part, one of the measuring part and the position determining part is fixedly arranged, and the other one is connected with the lens group so as to synchronously move with the lens group. Through the arrangement, the power requirement and noise can be reduced, no abrasion and no out-of-step are achieved, and the position detection precision below 1 micron can be achieved.

To provide a zoo lens which has a large aperture ratio and a minimized total length, offers less shift in the center of gravity while zooming and focusing and quiet autofocusing, and is suitable for video shooting.SOLUTION: A zoom lens of the present invention consists of a first lens group G1 having negative refractive power, an intermediate lens group GM having positive refractive power as a whole, a rear lens group GR, and a final lens group GN arranged in order from the object side, the intermediate lens group GM consisting of three or more lens groups including a focusing lens group configured to move along an optical axis while focusing from infinity to a short distance, and the rear lens group consisting of one or more lens groups. When zooming from the wide-angle end to the telephoto end, distances between the lens groups change as the intermediate lens group GM moves toward the object side, increasing the distance between the intermediate lens group GM and the rear lens group GR. The first lens group G1 and the final lens gup GN are stationary while zooming and focusing.SELECTED DRAWING: Figure 1

The utility model discloses an optical lens. The utility model relates to a zoom lens, which sequentially 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, a fifth lens with negative focal power, a sixth lens with positive focal power and a seventh lens with negative focal power from an object side to an image side along an optical axis, the first lens has positive focal power, the eighth lens has positive focal power, the ninth lens has positive focal power, the tenth lens has negative focal power, and the eleventh lens has positive focal power.

The invention discloses a focusing detection method, system and device and a medium. The detection method comprises the following steps: constructing a first mapping model among the real-time focal length of a zoom lens, the temperature of the zoom lens and the control voltage; constructing a second mapping model between the target focal length of the zoom lens and the light spot centroid offset and between the target focal length of the zoom lens and the current focal length of the zoom lens; acquiring a light spot image fed back by the surface of the to-be-measured object, and calculating to obtain a corresponding light spot centroid offset; acquiring the light spot centroid offset corresponding to the object to be measured, the current focal length of the zoom lens and the second mapping model to calculate the target focal length of the zoom lens; and obtaining the target focal length of the zoom lens, the current temperature of the zoom lens and the first mapping model to calculate the target voltage. Light spot image detection and zoom lens accurate voltage control are combined, actual errors caused by laser ranging during close-range imaging are effectively avoided, the image detection advantage of the image sensor is fully utilized, and the effect is more obvious especially during close-range detection.

A camera system includes a camera body, a lens barrel that is mounted to the camera body and includes at least one movable lens, and a zoom ring drive device that is mounted to the camera body. A first control unit of the camera body controls a second control unit of the lens barrel and a third control unit of the zoom ring drive device so as to move a zoom lens with a DC motor on the basis of information about the characteristic of the zoom lens and an optical characteristic value inputted to an input unit.

The zoom lens comprises a focusing lens group, a zoom lens group and a fixed lens group which are sequentially arranged from an object plane to an image plane along an optical axis, the focusing lens group has negative focal power, the zoom lens group has positive focal power, and the fixed lens group has positive focal power; the first lens has negative focal power, the second lens has negative focal power or positive focal power, and the third lens has negative focal power; the fourth lens has positive focal power; the fifth lens has negative focal power, the sixth lens has positive focal power, the seventh lens has negative focal power, the eighth lens has positive focal power, the ninth lens has negative focal power or positive focal power, the tenth lens has negative focal power, and the eleventh lens has positive focal power. The zoom lens can meet the imaging requirement under the full wave band, has the advantages of being small in size and small in distortion, and meets the use requirements of security and protection.

Aspects of the present disclosure relate generally to systems and methods for use in the implementation and / or operation of quantum information processing (QIP) systems, and more particularly, to a double individual-addressing multi-beam Raman system for use in QIP systems. A technique is described in which a first multi-channel modulator (MCM), a first telecentric zoom lens, and a first interleaver that form a first optical path of the Raman system that receives a first array of beams and adjusts the first array of beams to individually address atomic-based qubits in a chain from a first direction. Moreover, a second MCM, a second telecentric zoom lens, and a second interleaver form a second optical path of the Raman system that receives a second array of beams and adjusts the second arrays of beams to individually address the atomic-based qubits in the chain from a second direction different from the first direction.