120results about How to "Small field of view" patented technology

A focus detection device includes an image sensor and a plurality of lenslets. Each of the plurality of lenslets has a distinct conjugate length and is associated with a distinct portion of the image sensor.

An apparatus and method acquires and stores multiple resolution images from a specimen on a support and provides to the user a low magnification, reconstructed macro image of the entire specimen, or a large portion thereof, to aid the person in selecting points of interest to be viewed or analyzed at higher magnifications and resolution. The reconstructed image is formed of a large number of tiled, stored images which are coordinated and assembled to form the macro image of the specimen which is displayed on a monitor. Preferably, the stored, reconstructed image is reduced further in size by a software system before it is displayed to the user. The display may be on a local monitor over a local area network or sent over the Internet to the user who is typically a pathologist. The user selects by a marker such as a cursor the defined area of interest or region and then views higher magnification images or has them analyzed. Preferably, the pathologist can scroll to shift digitized, adjacent image tiles into view on the monitor. A fully computer-controlled microscope is used to acquire and store the digitized images and the illustrated microscope can be remotely controlled to change objective lenses, focus, light intensity, filters, field diaphragm, and to shift the microscope stage by a controller.

This invention provides a large field of view global measurement method using a coordinates tracking control board, belonging to the visual measurement field. The method employs a coordinates tracking control board installed on an adapter bracket, effectively integrates a visual measuring device and a laser tracker under the condition of not sharing a same field of view, and separates and calibrates internal and external parameters of left and right cameras to build an overall coordination system of a measurement scene so as to complete overall measurement based on a large field of view. The method can realize rapid and highly accurate measurement of large parts under a complex operating condition in a large field of view scope, is a measurement mode combining a plurality of types of optical components. The measurement method has the characteristics of large field of view and high efficiency, and can conveniently measure covered parts of target components, and rapidly complete large field of view global measurement in the industrial field.

The invention provides a laser radar and a working method thereof. The laser radar comprises a transmitting device, a beam splitting device, a galvanometer and a receiving device, wherein the transmitting device is used for transmitting a first laser beam to a to-be-detected object; the beam splitting device is used for splitting the first laser beam into a plurality of second laser beams, and thepropagation directions of the multiple second laser beams are different; the galvanometer comprises a first reflecting surface, the first reflecting surface is used for reflecting the second laser beams, the galvanometer is provided with a first rotary shaft and is rotated around the first rotary shaft, and an included angle between the first rotary shaft and a normal line of the first reflectingsurface is greater than zero; the receiving device is used for receiving echo beams reflected by the to-be-detected object. The laser radar has the advantage that the larger field angle can be obtained through smaller rotation angle of the galvanometer.

A single dual mode monolithic focal plane array having an active sensor and a passive sensing capability is switched from one mode to the other by switching the bias across the cells of the array from a passive IR mode to an active LADAR mode, with the monolithic dual mode focal plane array having applications in missile target seekers and laser target designators. The switching is accomplished by increasing the gain of the array by as much as 30 times that associated with IR detection when laser return pulses are expected. Thus, there need be no mechanical changes to the array to afford both passive IR sensing and an active LADAR pulse detector. Nor need there be two different focal plane arrays, one for IR and one for laser radiation, which leads to boresighted alignment problems.

The invention discloses an autonomous humanoid double-arm robot. The autonomous humanoid double-arm robot comprises a head, a double-wheel differential driving mobile platform, two seven-degree-of-freedom humanoid arms, a moving target simulation platform and a PTZ camera system; and a speedometer, a two-dimensional laser radar system, an ultrasonic obstacle avoidance sensor system, a binocular vision measurement system and the PTZ camera system are arranged in the double-wheel differential driving mobile platform. The autonomous humanoid double-arm robot has the advantages that the double-wheel differential driving mobile platform and the high-redundancy humanoid double-arm robot are utilized to form one high-redundancy humanoid double-arm mobile service robot system based on an ROS operating system; an advanced method for performing integral motion planning on the high-redundancy humanoid double-arm mobile service robot on the basis of an integral speed decomposition control algorithm is provided; a multi-modal information fusion target acquiring and identifying and capturing system based on a PTZ vision system and a laser sensor system is established; and a path planning methodbased on a three-dimensional C space enhanced type probability map improved A* algorithm is provided.

The invention discloses a wide-angle lens which comprises a first lens group with negative focus length, a diaphragm and a second lens group with positive focus length from an object, wherein the first lens group comprises a first lens with negative focus length, a second lens with negative focus length and a third lens with positive focus length; the second lens group comprises a fourth lens, a fifth lens and a sixth lens, the fourth lens is provided with positive focus length, and the fifth lens and the sixth lens have positive focus length after being glued; and the first lens group and the second lens group meet the following condition of -3<fL1 / fL2<-0.5, wherein fL1 expresses the combined focus length of the first lens group, and fL2 expresses the combined focus length of the second lens group. By adopting six full-glass lens structures, the invention has the advantages of compact structure, better machining manufacturability and low production cost. The wide-angle lens has better imaging quality under the condition of ensuring wide angle, and improves the imaging quality because the whole optical system enlarges the tolerance.

The invention discloses a dual-window electronic map service system with a magnifier window and based on Internet, as well as a relevant method. Global and detailed exhibitions can be fulfilled simultaneously. The technical scheme is as follows: The system comprises a client end, the first map storage device and a relevant process device, the second map storage device and a relevant process device, and a synchronism device; wherein, the client end comprises the first map exhibition window, the second map exhibition window and a map service relevant page. The first map storage device comprises the first map database and the first correlated database; the first map process device comprises the first map call module and the first map engine module. The second map storage device comprises the second map database and the second correlated database; the second map process device comprises the second map call module and the second map engine module. The synchronism device comprises a coordinate conversion module and an operation synchronism module. The invention adapts to the field of of Internet electronic maps.

The invention discloses a novel bionic facetted eye imaging target positioning system, and belongs to a target detection field. The bionic facetted eye imaging target positioning system comprises protect glass, a large aperture facetted eye optical system, a curved surface distributed detector array, a computer neural network signal processing system, a servo control system, an engine control signal processing system, a supporting structure and a shell. The compound eye optical system, as an optical information acquisition system of the system, focuses incident light on the curved surface distributed detection array for imaging; the signal processing system not only pre-treats the optical image information; the signal processing system employs a neural network treatment manner and a computer carries out repeated training on an established target information database, so as to realize rapid identification of a target and outputs the information to the servo control system in a digital signal form; the servo control system treats and analyzes the input digital signal to obtain current relative position information of the target and output the current relative position information of the target to the engine control signal processing system in a feedback signal for; and the engine control signal processing system adjusts a gesture of the system according to the feedback signal to realize precise positioning and tracking. The system is simple and compact in structure and low in cost, and has the characteristics of wide detection scope, high resolution, high identification probability and accurate positioning.

The present invention discloses an optical imaging lens. The optical imaging lens comprises in order from an object side to an image side a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The following conditional expressions are satisfied in that: TTL<=6.5mm; TL / (G23+G34+G45)<=2.7; or TTL<=6.5mm; TL / (G23+G34+G45)<=2.7; or TTL<=6.5mm; and TL / (G23+G34+G45)<=2.7. The optical imaging lens is configured for optics photography imaging and performs the control of the concave-convex curved surface arrangement of each lens and the control of the related parameters through adoption of at least two conditional expressions to shorten the length of the lens while maintaining good optical performance, increasing the effective focal length of the system and shortening the angle of the visual field.

The invention discloses a large-view-field off-axis three-mirror optical system. The system comprises a first mirror with the negative lens power, a second mirror with the negative lens power, a third mirror and a detector with the positive lens power, wherein the first mirror is opposite to a target light beam incident port, the second mirror is arranged on the reflection optical path of the first mirror, and an aperture diaphragm is arranged on the surface of the second mirror; the third mirror is arranged on the reflection optical path of the second mirror; the detector is used for receiving reflection light of the third mirror. The negative-negative-positive anti-far-distance mode is adopted to the structure of the large-view-field off-axis three-mirror optical system, off-axis light large in view field firstly passes the mirrors with the negative lens power and is diverged, the view field of emitted light is reduced relative to the mirror with the positive lens power, that is, more off-axis light larger in view field can enter the mirror with the positive lens power and is received by the detector, and accordingly the aim of enlarging the view field is achieved.

The invention provides an optical imaging lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens sequentially from the object side to the image side and satisfies the following relational expressions: 1<=EFL / TTL and TTL<=18mm. By controlling the arrangement of the concave and convex surfaces of the lenses and using at least one relational expression to control relevant parameters, the length of the optical imaging lens is shortened under the condition of maintaining good optical performance. The optical imaging lens of the invention is used in optical imaging.

A three-dimensional display system (10) comprises a display housing (24) and a plurality of projectors (12) for projecting two-dimensional images (102) into a space, each projector (12) having means to adjust the distance between the projector (12) and the projected image (102), and each projector (12) being pivotally mounted to the display housing (24), for adjusting the horizontal and vertical position of the projected two-dimensional image (102) with respect to the projector (12). The display provides a high-resolution, three-dimensional multi-coloured image which can be touched safely by the viewer. The display may be respond to physical objects in the display area by altering the image. The display may be used to operate a computer and browse the world wide web.

An optical imaging lens system includes five lens elements which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has negative refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with negative refractive power can have an object-side surface being concave in a paraxial region thereof.

In a method for image data acquisition of a region of interest in a subject with a magnetic resonance device, wherein, to establish the field of view, a minimal geometric shape encompassing the subject to be acquired and / or the surface of the subject is determined automatically from previously acquired localizer exposures as aliasing information for each exposure, at least one slice plane is determined for the acquisition of the region, and the phase coding direction and / or the extent of the field of view in the phase coding direction is determined for every slice plane using the aliasing information.

The invention discloses an optical lens. The optical lens sequentially comprises, from the object side to the image side, a first lens which has positive focal power and of which the convex side faces the object side, a second lens of which the convex side faces the object side, a biconcave third lens, a fourth lens which has positive focal power, a fifth lens, and a sixth lens. The optical lens provided by the invention has the advantages of high resolution, small distortion, large aperture and small size. Moreover, the focal length is relatively large, the field range is reduced, the details of the object can be observed better under the condition of same image plane size, and the demand for small-field observation is satisfied.

The invention discloses a large-span bridge multi-point deflection measurement method considering camera attitude change. According to the invention, aiming at a picture imaging problem, Wiener filtering deblurring on an image and detail improvement based on a multi-scale image are carried out, and a template size is increased when a digital image correlation method is used to calculate vertical displacement of the image so as to control matching precision. The method has certain engineering universality, and compared with a conventional method in which a camera is erected on the shore, more view fields are saved; the camera is erected on the bridge floor, the limitation of observing structures on the outer side of the bridge through an existing optical measurement method is broken through, and a target measurement point is easier to locate; and because the camera is erected on the bridge floor, known size parameters of multiple structures can be directly utilized, and scale calibration is more convenient and accurate.

An optical lens comprises: a first lens having a negative focal power; a second lens; a third lens; a fourth lens; a fifth lens, wherein the fourth lens and the fifth lens forms an achromatic lens group; and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are sequentially disposed along a direction from an object side to an image side, wherein the first lens has at least one object surface facing the object side, and the object surface of the first lens is convex, and wherein the second lens has at least one image surface facing the image side, and the image surface of the second lens is convex so as to facilitate forming a concentric circle structure.

The invention discloses a spectroscope type corona ultraviolet detector. The spectroscope type corona ultraviolet detector comprises a telephoto lens, a spectroscope, an ultraviolet detector, an ultraviolet signal processing circuit, a liquid crystal display screen, an area array charge coupled device (CCD) and an image processing circuit. The telephoto lens and the area array CCD share the same optical axis, the spectroscope is arranged between the telephoto lens and the area array CCD, a 45-degree included angle is formed between a mirror face of the spectroscope and the optical axis of the ultraviolet detector, and the spectroscope 2 adopts a lens which can be transmitted by visible light of 380-760nm wave band so that ultraviolet light of 100-380nm wave band can be reflected. Light rays transmitting the telephoto lens are divided into two branches by the spectroscope, one branch is ultraviolet light, and the other branch is visible light. The ultraviolet is reflected on a photosensitive face of the ultraviolet detector through the spectroscope, and the other branch of the visible light emits on a photosensitive face of the area array CCD 6 after being transmitted by the spectroscope. The spectroscope type corona ultraviolet detector has the advantages that imaging display of a discharging insulator can be achieved, meanwhile, discharging ultraviolet radiation intensity can be displayed, and therefore the purpose of accurate positioning of a discharging position of the discharging insulator can be achieved.

An integral star sensor based on biological compound eye structure and the application thereof; the star sensor is set as multi field coverage star sensor based on biological compound eye structure, and forms each independent small eye by the electro-optical imaging system in the small field coverage and forms the large field coverage star sensor by a plurality of small eyes; the optical channel between the optical lens and image sensor CCD / APS in the electro-optical imaging system is round hole; in the large field coverage star sensor, the small eyes are located at the semicolumn surface or hemisphere surface, and the optic axis of the small eye is orthometric with axis of the column; the fields coverage of the adjacent small eyes are not overlapped. The invention uses a plurality of independent small field coverage with high spatial resolution to realize the large field coverage to take more stars, which greatly increases theta sep and realizes to improve the precision of the star sensor from two aspects of n and theta sep.

A focus detection device includes an image sensor and a plurality of lenslets. Each of the plurality of lenslets has a distinct conjugate length and is associated with a distinct portion of the image sensor.

The invention discloses a laser radar scanning method and a laser radar. The laser radar scanning method comprises the following steps that: according to a preset time interval, alternately emitting anear-frame light beam and a far-frame light beam, wherein the near-frame light beam has first field-of-view width A1 and first pulse frequency F1, the far-frame light beam has second field-of-view width A2 and second pulse frequency F2, A1 is greater than A2, and F1 is greater than F2. By use of the technical scheme provided by the embodiment of the invention, the near-frame light beam and the far-frame light beam are alternately emitted, different field-of-view widths and pulse frequencies can be used for meeting the detection requirements of different detection distances, and meanwhile, thescanning method is simple and is favorable for lowering requirements on production debugging.

The embodiment of the invention discloses a photosensitive image element, an image collector, a fingerprint collection device and a display device supporting a collection function. The photosensitive image element comprises a cavity for holding a photovoltaic conversion unit, the upper portion of the cavity is coated with a light-blocking film with a light transmission pin hole, and the upper portion of the light-blocking film is provided with a transparent dielectric layer and a micro lens in order. The micro lens, the transparent dielectric layer and the light transmission pin hole allow the photosensitive image element to have an object space field for limiting an angle of visual field, image points or image spot of the object points located in the object space field are arranged in the light transmission pin hole of the light-blocking film; and the image points or the image spots of the object points located at the external portion of the object space field are arranged at the external portion of the light transmission pin hole. The pin hole on the light-blocking film and the micro lens are configured to restrain an incident light path to allow the photosensitive image element to have a narrow field of view, the image collector based on the photosensitive image element with the narrow field of view cannot longer depend on a lens system or a pinhole imaging to restrain the incident light path to allow thinning of a sharp image to be possible while obtaining the sharp image through the image collection device so as to facilitate integration with other devices.

The invention discloses an optical imaging camera lens. The optical imaging camera lens comprises, sequentially from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, and is capable of satisfying following conditional expressions: 1.30 is smaller than or equal to T1 / (T3+T4); ALT / Gmax is smaller than or equal to 2.30. The optical imaging camera lens is used for the optical shooting imaging, and by controlling the arrangement of the concave surfaces and the convex surfaces of the various lenses and adopting at least two conditional expressions to control related parameters, good optical performance is maintained, and the length of the camera lens is reduced under a condition of increasing effective focal length of a system and reducing a field angle.

The invention discloses an array camera observation method for detecting a structure surface in turbid media, and the method employs a camera array device, can greatly reduce the observation distance under the condition that the size of a view field is not changed and improves the imaging resolution, so as to achieve a purpose of carrying out the clear imaging of the structure surface in the turbid media. The method comprises the following steps: calibrating all cameras through employing a coding point calibration plate, and obtaining the internal parameter matrix and distortion parameter matrix of each camera and a rotating matrix and translation matrix of a camera coordinate system and the world coordinate system; calculating an ideal internal parameter matrix of a camera array; calculating an image homography transformation matrix; carrying out the correction calculation of optical centers of the camera; carrying out the correction calculation of lens distortion; carrying out the calculation of the mapping relation between a single camera image and an array image, i.e., a look-up table; and carrying out the high-resolution imaging display and detection of the structure surface.

The astigmatism eliminating three-reflector system provided by the present invention aims at facilitating the machining and regulation of reflective optical system and reducing its development cost. The astigmatism eliminating three-reflector system includes three, primary, secondary and the third, reflectors with one common optical axis, the primary reflector and the third reflector are spherical mirror, and the secondary reflector has quadric oblate spherical reflecting surface. It system also has ar aperture diaphragm, and has abxial working field of view. The parallel light beam incident to the primary reflector is thrice reflected in the primary reflector, secondary reflector and the third reflector successively to image in the image plane. The present invention is easy to regulate and low in cost, and has relatively working field of view.

The invention belongs to eye guard headgear display system, including a aperture diaphragm, the first lens, the second lens, the third lens, a lens group and a display. It adopts OLED or AMLCD as the image source. It has small volume, light weight, high distinguishability and wide view field. And it is not connected with high pressure. The volume of the ocular system is small and the weight is light. When the tiny display of small size and high image element is adopted, the ocular with the big exit pupil diameter and the big eye point distance is certain to lead big incidence angle and high project to bring big high-level image error. The invention uses the second lens, the third lens and the fourth lens to compress beam. The first lens and the fifth lens balance the image error led by the second, the third and the fourth lens to gain the ocular system of the big exit pupil diameter, the big eye point distance and the big view field. The display and the ocular group form the eye guard headgear display system. It has big view field, light weight, small volume and is used safely and conveniently.

A lens assembly includes a first lens, a second lens, a third lens, and a fourth lens, wherein the first lens, the second lens, the third lens, and the fourth lens are arranged in order from an object side to an image side along an optical axis. The first lens is with positive refractive power and includes a convex surface facing the object side. The second lens is with negative refractive power and includes a concave surface facing the image side. The third lens is with refractive power and includes a convex surface facing the image side. The fourth lens is with refractive power. The lens assembly satisfies: FOV≤56°, wherein FOV is a field of view of the lens assembly.

The invention provides a subway carriage crowding degree display system self-powered by the wind power of a subway station, and a method thereof. The system comprises: a wind energy collection moduleused for collecting the wind energy in the subway station and converting the wind energy into electric energy to supply power to the display system; an image recognition system composed of a web camera and a TCP server established on the basis of python, and used for obtaining a timing image by using the web camera, recognizing the number of people after a python server receives the image to obtain statistical data of the number of people, and sending the statistical data of the number of people to a display part after receiving a request of the display part; and the display part composed of aWiFi module, a single chip microcomputer development board and an RGB touch screen, and capable of receiving the data sent from the server and displaying the data on the screen. The subway carriage crowding degree display system provided by the invention utilizes the wind power self-power supply technology, thereby being more energy-saving and emission-reducing, having high anti-interference ability, and having the characteristics of high detection accuracy, high detection speed, etc.

The invention relates to a punch machine for punching a panel in which the position of each hole to be made is identified by a mark. The machine comprises a structure for receiving said panel, said structure presenting X and Y directions; means for holding said panel relative to the structure; at least four punch blocks secured to a support, each punch block having at least one punch carrier tool and at least one matrix carrier assembly; means for displacing each punch block separately in the X and Y directions and in rotation; optical means for comparing the position of each punch block with said mark; and means for separately controlling the displacement means in response to position error information.