22results about How to "Achieve clear imaging" patented technology

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 a vehicle shooting method and related equipment, and the method comprises the steps: obtaining image data which comprises images of driving vehicles, determining whether there is an accent light vehicle whose vehicle lamp brightness is greater than a first threshold value in the driving vehicles or not based on the image data, if yes, determining shooting parameters and light supplement parameters of the accent light vehicle, and if not, determining the shooting parameters and the light supplement parameters of the accent light vehicle; and an image of the accent light vehicle is generated based on the shooting parameter and the light supplementing parameter, so that clear imaging of the accent light vehicle is realized.

The present invention provides an adaptive optical system based on an excitation light beacon. The system uses the excitation light generated by laser heating or ablation on the target surface as the beacon of the adaptive optical system, which is received by a telescope device after being transmitted through the atmosphere and detected by a wavefront distortion detection device. After the wavefront information is solved by a computer, the wavefront distortion correction device is controlled to load the distorted wavefront conjugate phase to achieve correction of aberrations, which can achieve clear imaging of the target or improve the power density of the laser focus point; the beacon light of this system is generated at the target, which is suitable for target detection at various heights, and there is no problem of focusing anisotropy; in addition, the correction capability of this system has no requirements on the roughness of the target surface, and at the same time has the advantages of high closed-loop bandwidth of the adaptive optical technology based on wavefront detection.

The invention provides a low-light multispectral imaging device under low illumination at night, which is used for solving the problem that spectral characteristic information of a target cannot be acquired by adopting a low-light detection system in a low-illumination environment at night at present. And a visible near-infrared spectrum imager cannot be used for imaging or cannot be used for acquiring a high-contrast image for target detection and identification. According to the low-light-level multispectral imaging device, the electric filter wheel is arranged between the low-light-level imaging lens and the low-light-level detector, hardware external synchronization is arranged between the electric filter wheel and the low-light-level detector, switching of one narrow-band optical filter is completed every time the rotating structure rotates once, switching of one spectral band channel is achieved, and switching of the low-light-level imaging lens and the low-light-level detector is achieved. At the moment, through hardware external synchronization between the electric filter wheel and the low-light detector, the low-light detector synchronously exposes once; according to the invention, through coupling of a low-light imaging technology and a light splitting technology of a plurality of narrow-band optical filters, information of a plurality of spectrum band channels of a detected target is obtained, and efficient detection under low illumination at night is realized.

This application provides an optical lens, a camera module, and a binocular stereo vision system. The optical lens, used in the binocular stereo vision system, includes multiple lenses, specifically at least eight lenses and a filter. Each lens has a different temperature coefficient of refractive index (dn / dT) to compensate for thermal defocusing when the temperature changes, thereby maintaining the total focal length of the optical lens within a preset range. Here, n is the refractive index of the lens, and T is the temperature. This optical lens achieves a balance of large field of view, high resolution, and clear imaging over a wide temperature range.

The application provides an imaging device, which comprises a middle wave infrared lens and a detector for receiving an image formed by the infrared lens. The infrared lens has a focal length of 120 mm and is composed of a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence along an optical axis from an object side to an image side. The first lens and the third lens are both convex moon positive lenses with a convex surface facing the object side. The second lens is a convex moon negative lens with a convex surface facing the object side. The fourth lens is a convex moon positive lens with a convex surface facing the image side. The fifth lens is a convex moon positive lens with a convex surface facing the image side. The detector matched with the infrared lens is a refrigeration type infrared detector, and the number of image elements is 640*512, and the size of the image elements is 15 microns. The infrared lens is designed through secondary imaging, realizes 100% cold stop efficiency, effectively suppresses stray light, has high imaging quality and can realize clear imaging of a large target surface.

This invention relates to the technical field of concealed pipeline mapping, and in particular to an auxiliary device for rapid three-dimensional coordinate positioning of concealed pipelines in installation projects. The invention includes a mother drone equipped with a probe and camera mounted on it. A marking nozzle is connected to the mother drone, and the marking nozzle is connected to and installed on a daughter drone. The mother drone connects the marking nozzle and the daughter drone via a flexible hose and power cable. The device uses a mother drone integrating a probe and camera, enabling multi-angle, omnidirectional spatial scanning and image acquisition of concealed pipelines. This achieves rapid and accurate three-dimensional coordinate positioning of the concealed pipelines, significantly improving the accuracy and reliability of the positioning. The mother drone connects the marking nozzle and the daughter drone via a flexible hose and power cable, enabling remote synchronous control. The daughter drone can flexibly move to the pipeline positioning point and automatically complete on-site marking, avoiding errors associated with traditional manual line drawing and improving the accuracy and consistency of the marking.

The present invention provides a vehicle-mounted front-view optical lens, which has the characteristics of high resolution, large aperture, and large field of view, and meets the requirements of the automobile automatic driving system. It includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged in sequence from the object side to the image side along the optical axis; a color filter, a protective glass, and an IMA are arranged in sequence behind the image side of the seventh lens; the first lens has a negative optical focal length, and its object side surface is convex, and its image side surface is concave; the second lens has a negative optical focal length, and its object side surface is concave, and its image side surface is convex; the third lens has a positive optical focal length, and its object side surface is convex, and its image side surface is convex; the fourth lens has a positive optical focal length, and its object side surface is convex, and its image side surface is convex; the fifth lens has a positive optical focal length, and its object side surface is convex, and its image side surface is convex.

The invention discloses a large-view-field image space telecentric underwater vision docking imaging optical system. The optical system sequentially comprises a dome cover window, a front group lens, an iris diaphragm, a rear group lens and an optical filter, the front-group lens sequentially comprises a front-group first lens, a front-group second lens, a front-group third lens and a front-group fourth lens; the rear group lens sequentially comprises a rear group first lens, a rear group second lens, a rear group third lens and a rear group fourth lens; the variable diaphragm is positioned between the front-group fourth lens and the rear-group first lens; and an object space imaging light beam sequentially passes through the dome cover window, the front group of lenses, the variable diaphragm, the rear group of lenses and the optical filter to be imaged on the target surface of the gating camera. The system has the advantages of being large in view field, short in focal length, variable in F number, telecentric in image space and the like, clear imaging is achieved through rear set focusing and the variable F number, the system can be used for short-distance underwater vision docking recovery of a cross-domain aircraft, it is ensured that imaging can be clear in the docking process, and position calculation errors caused by image space focusing can be eliminated.

The application discloses an intelligent visual projection method and system suitable for optical imaging, wherein the system comprises a visual stimulation control module for setting a visual stimulation control signal; an image output module for generating full-spectrum visual stimulation and light intensity according to the visual stimulation control signal; a spectrum switching module for receiving the full-spectrum visual stimulation and the light intensity and outputting first specific spectrum visual stimulation; an infrared light source module for outputting infrared spectrum visual stimulation; a spectrum processing module for filtering preset green spectrum signals of the first specific spectrum visual stimulation and integrating the infrared spectrum visual stimulation to output second specific spectrum visual stimulation; and an image stimulation focusing module for fine-tuning the projection area and light intensity of the second specific spectrum visual stimulation and projecting the second specific spectrum visual stimulation to a visual tissue region. The application can solve the problem that the prior art cannot meet the research demand of visual neural optical signals and has the characteristics of intelligence, automation, precision and no optical pollution.

The embodiment of the utility model discloses a zoom lens. 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, wherein the focal powers are positive, negative, positive and negative in sequence; wherein the first fixed lens group comprises four lenses, and the focal powers of the four lenses are negative, positive, positive and positive in sequence; the first zoom lens group comprises three lenses, and the focal power of the three lenses is negative, negative and positive in sequence; the second zoom lens group comprises four lenses of which the focal powers are positive, positive, negative and positive in sequence; the focusing lens group comprises two lenses, and the focal power of the two lenses is positive and negative in sequence; the second fixed lens group comprises two lenses, and the focal power of the two lenses is positive and negative in sequence. According to the embodiment of the utility model, 15 lenses and plate glass with a certain thickness are used, and the five-component zoom lens can be adapted to a 1 / 1.8 ''target surface, so that the five-component zoom lens has the advantages of large multiplying power, large aperture, small distortion and high image quality.

The invention discloses a focal plane compensation method for a preset vacuum environment focal plane, the method comprising the following steps: first, in the Zemax software, the air pressure value in the environmental parameters is set to 0 atmospheric pressure, the system object distance and other optical parameters are set, the system back intercept is set as the only variable, the back intercept is obtained through image quality optimization, and the variable on the back intercept is cancelled to make it fixed; then, the parameters of the collimator are input into the Zemax optical system, the previous object distance is replaced, the air pressure value in the environmental parameters is set to 1 atmospheric pressure, and the distance between the collimator light source and the main surface of the collimator is set as the only variable for image quality optimization; finally, the light source distance obtained after optimization is compared with the focal length of the collimator, and the focal plane of the preset vacuum focal plane is compensated under normal pressure conditions by adjusting the position of the collimator light source. The advantages of the invention are: the optical system is subjected to light efficiency in the laboratory atmospheric environment, and the focal plane of the preset vacuum focal plane can be compensated, so that clear imaging of the target in the vacuum environment can be achieved.

The application discloses an autofocus method, system, device and medium for a step sample, and relates to the field of autofocus. The autofocus method comprises the following steps: acquiring a laser spot image; dividing the laser spot image into at least k segments along the transverse direction; calculating the defocus amount corresponding to each segment image through spot centroid calculation to obtain a defocus amount set; performing clustering analysis on the defocus amount set based on a preset cluster density to form a clusters; and sorting the mode or average value of the defocus amount in each cluster according to the numerical value, and setting the defocus amount of the step surface under each height type according to the focusing direction corresponding to the positive and negative signs of the defocus amount and the height value sequence of the step surface under each height type. Therefore, the minimum value k of the segmentation number is set, so that the a clusters after the clustering analysis correspond to the step surfaces under a kind of height, the interference of other height step surfaces on the spot information of the step surface to be focused is avoided during focusing, and clear imaging of each height step surface of the measured object surface is realized.

The utility model discloses a kind of oblique image zoom lens and anterior segment parameter measurement system, oblique image zoom lens includes: front fixed group, moving group and rear fixed group are sequentially arranged along light incident direction;Wherein, the front fixed group includes first lens and second lens sequentially arranged along the light incident direction;The moving group includes third lens;The rear fixed group includes fourth lens, cementing mirror group and fifth lens sequentially arranged along the light incident direction.The oblique image zoom lens and anterior segment parameter measurement system of the utility model can provide suitable optical zoom condition for anterior segment parameter measurement of different depth eye socket, can realize clear imaging to different depth eye socket, can make anterior segment and lens optical axis not perpendicular state, light still can be efficiently, correctly spread and focus, greatly widen the application range and operation convenience of measurement, powerfully promote the development and application of ophthalmic imaging technology in different eye socket population detection aspect.

The present application relates to a kind of multifunctional endoscope and endoscope system.Multifunctional endoscope includes endoscope body and optical catheter, endoscope body includes handle and endoscope catheter, endoscope body is equipped with channel sleeve kit in channel, the distal end of optical catheter is arc closed end, the proximal end is open end, at least the closed end of optical catheter is light-transmitting structure, optical catheter can be set on endoscope catheter by open end, and the open end of optical catheter and the distal end of handle or the proximal end of endoscope catheter are provided with the buckle structure of lockable matching connection.Multifunctional endoscope of the present application is highly integrated, can be used for the visualization puncture of tissue and the visualization suction, flushing, electrocoagulation etc after puncture Operation, and even if front end contact tissue can be clearly imaged in puncture process, and can avoid the problem that lens is stuck to blood or other tissue to cause blurred vision, and simple structure, easy to use, with good application prospect.

This application discloses a long-focal-length mid-wave infrared continuous zoom optical system, comprising a primary imaging lens group and a secondary imaging lens group. The primary imaging lens group includes: a first lens and a second lens forming a front fixed group; a third lens forming a zoom group; a fourth lens forming a compensation group; and a fifth lens forming a rear fixed group. During imaging, the focal length is changed by the movement of the zoom group along the optical axis, and the movement of the compensation group along the optical axis compensates for the image plane defocusing caused by the movement of the zoom group, thereby achieving clear imaging throughout the zoom process. Furthermore, a secondary imaging lens group is provided after the primary imaging lens group for re-correcting the image after the primary imaging, which can significantly reduce the lens aperture of each lens in the optical system. In addition, the optical system provided by this invention uses three plane mirrors to deflect the light path, further reducing the length of the entire optical system, thereby realizing a compact high-magnification continuous zoom optical system.

The application belongs to the technical field of projection lenses, and provides a Sharm lens for projection, a projection device and a projection system. The Sharm lens for projection comprises a rear group and a front group arranged in sequence from an object side to an image side along an optical path direction, and the rear group and the front group are separately and spacedly arranged; the rear group comprises a lens module with a positive optical power-negative optical power-positive optical power structure, and in the lens module with the positive optical power-negative optical power-positive optical power structure, a first positive optical power lens group, a first negative optical power lens group and a second positive optical power lens group are arranged in sequence from the object side to the image side along the optical path direction; and the front group comprises a negative optical power lens and a positive optical power lens arranged in sequence from the object side to the image side along the optical path direction. The Sharm lens for projection has the advantages of small F#, good imaging quality and the like through cooperation of the multiple lenses in the rear group and the front group.

The utility model belongs to the technical field of optical lenses, and particularly relates to an infrared continuous zoom lens with a large zoom ratio, which comprises a front fixing group, a zoom lens group, a compensating lens group, a middle fixing group, a focusing lens group, a reflecting lens group and a rear fixing group. The linear bearings and the guide optical shafts are adopted, the movement performance is good, the whole machine layout is very compact, and the whole machine size is relatively small.

The invention discloses a focal plane compensation method for imaging a target at a limited distance, and the method comprises the following steps: first, in the Zemax software, the object distance of the optical system to be optically calibrated is set as the target distance, the environmental parameters and other optical parameters are set, the back intercept is obtained through image quality optimization, and the variables on the back intercept are cancelled to make it fixed; then, the parameters of the collimator are input into the Zemax optical system, the previous object distance is replaced, and the distance between the collimator light source and the main surface of the collimator is set as the only variable for image quality optimization; finally, the light source distance obtained after optimization is compared with the focal length of the collimator, and the focal plane of the imaging of the target at a limited distance is compensated by adjusting the position of the collimator light source. The invention has the advantages that the optical system is optically calibrated in the laboratory space, and the focal plane compensation of the imaging of the target at a limited distance can be realized, that is, the clear imaging of the target at the limited distance can be realized.

The projection lens comprises a refraction system and a reflection system, and the refraction system comprises a rear lens group, a middle lens group and a front lens group. By reasonably optimizing parameters such as the number, the size and the surface type of the lenses in the projection lens, the projection ratio of the projection lens can be reduced to 0.19-0.22, so that the projection distance is further reduced when pictures with the same size are projected. When the size of a picture is adjusted, clear imaging under various sizes of 88 inches to 120 inches can be realized by adjusting the position of the middle lens group and the distance between the projection lens and the projection screen. The projection lens comprises two doublet lens groups, one triplet lens group and three aspheric lenses, the structure is simple, chromatic aberration of three-color laser can be specially optimized, and the chromatic aberration range is controlled to be 0.3 pixel.

This invention discloses an industrial lens, comprising a first lens group, a second lens group, and a third lens group. The positions of the first and third lens groups are fixed, while the position of the second lens group is movable. The first lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The second lens group includes a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, and a twelfth lens. The third lens group includes a thirteenth lens and a fourteenth lens. The movement of the second lens group along the optical axis enables focusing at different object distances. The fixed position of the first and third lens groups reduces the impact of focusing at different object distances on resolution, ensuring balanced image quality at various working distances. Furthermore, the rational setting of the number of lenses in each lens group is beneficial for achieving a high-quality industrial lens.

The ultra-wide-angle lens comprises a first lens group, a second lens group, a third lens group and a fourth lens group which are sequentially arranged from an object plane to an image plane along an optical axis, the first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the second lens group comprises a sixth lens; the third lens group comprises a seventh lens; the fourth lens group comprises an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens and a fifteenth lens; the first lens, the second lens, the third lens, the fifth lens, the eighth lens, the eleventh lens, the thirteenth lens and the fifteenth lens have negative focal power, and the fourth lens, the sixth lens, the seventh lens, the ninth lens, the tenth lens, the twelfth lens and the fourteenth lens have positive focal power. And the use requirements of large field angle, low distortion, low chromatic aberration and high image quality are met.