40results about How to "Large imaging area" patented technology

The invention provides a time-resolved extreme-low-light multispectral imaging system and method and belongs to the field of extreme-low-light multispectral imaging, wherein the system is triggered through a trigger to ensure the time-resolved property, and the multispectral high-resolution two-dimensional color imaging for extreme-low-light objects is realized by combining a triggering technology of the trigger, the compressive sensing theory, a DLP (digital light processing) technology, a spectrum-dividing technology, an optical fiber coupling technology and a photon counter linear array detection technology; the system is composed of an extreme-low-light light source or self-luminous organisms, the trigger, an optical filter, an optical imaging system, a DMD (digital mirror device) micromirror array, an optical focussing and collecting system, a spectrophotometer, a photo counter lineary array consisting of a plurality of photon counters with different wavelengths, a driving control module and an optimization algorithm module; the sensitivity of the system can reach the level of a photon, and can be widely applied to the fields of self-luminous organism detection, medical treatment imaging, data acquisition, communication, astronomy, military, hyperspectral imaging, measurement in quantum mechanics and the like.

An imaging optical lens system includes six lens elements, the six lens elements being, 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, a fifth lens element and a sixth lens element. The first lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The fifth lens element has an object-side surface and an image-side surface being both aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one convex critical point in an off-axial region thereof.

The invention provides a time-resolved single-photon counting two-dimensional imaging system and a time-resolved single-photon counting two-dimensional imaging method and belongs to the technical field of extremely-weak light detection. A trigger 2 is triggered to start sampling, centralized sampling is performed at t time intervals, and measurement and counting are performed if light comes at the intervals, so that time resolving of an extremely-weak light object is realized, and a time sequence image is generated. Imaging is performed on the basis of a compressive sensing (CS) theory, a digital micro-mirror device (DMD5) performs linear random projection on a compressible two-dimensional image, the compressible two-dimensional image is optically modulated and then synchronously detected by using a single-photon counter, and a high-resolution extremely-weak light image can be reconstructed by a small amount of sampling operation. The measurement process is linear and non-adaptive, the reconstruction process is non-linear, and the invention has the advantages of high generality, robustness, expandability, superposition and computation asymmetry, and can be widely applied to the fields of life science, medical imaging, data acquisition, communication, astronomy, military affairs, hyper-spectral imaging and quantum measurement.

An image device, such as a digital camera, detects specific repeating patterns of signal variations by processing columnar information from the device's two-dimensional sensor array used to generate images. In one embodiment, the columnar information is derived from calculating row averages for two image frames, with each row average being a computed average of the multiple signal intensities generated from some or all of the sensors within a particular row. After the columnar information is determined for each of the two frames, a difference signal is generated as a sequence of the differences between the row averages for the first frame and the row averages for the second frame. This row averaging and frame differencing removes a large percentage of the signal energy that is not a result of the artifact of interest, such as the flicker generated by illumination having intensity fluctuations at 100 Hz or at 120 Hz. In some embodiments of the invention, the row averaging and/or the frame-to-frame comparison are deleted.

A surveillance device makes use of a fixed point in space such as a stabilized blimp, and a downward-looking high-resolution scanning camera. One or more line scan devices are arranged in a radial fashion on a rotating disk, together with associated lenses, so as to repeatedly scan an area of interest. To allow for manageable data bandwidth and to focus on objects of interest, the data from successive scans is compared so as to show primarily the moving objects, with occasional full-scan reference images included.

A solid-state imaging element 2 having a light-receiving portion where a plurality of photoelectric conversion elements 21 are arranged, and electrode pads 22 electrically connected to the photoelectric conversion elements 21 is mounted on a substrate 1 having external connection electrodes 12 and electrode pads 11 electrically connected to them. A scintillator 3 is formed on the surface of the light-receiving portion of the solid-state imaging element 2. The electrodes pads 11 and 22 are electrically connected by wiring lines 4. An electrical insulating organic film 51 tightly seals the scintillator 3 and covers the electrode pads 11 and 22 and the wiring lines 4. A metal thin film 52 is formed on the organic film 51.

The invention relates to a method for raising the resolution of projected pictures through common imaging of multiple DMDs. The ultraviolet light source, the lens group and the DMD are placed symmetrically in pairs with respect to the projected lens, the reflective prism is placed vertically with the projected lens, and the projected picture information is divided into two parts. The information is collected separately by two DMDs, and the beams are reflected and spliced ​​completely at the prism, and then projected and imaged uniformly, so that a larger imaging area can be obtained in the case of a higher resolution.

An electromagnetic wave detector includes a conversion element for converting incident electromagnetic waves or high energy radiations into an electric charge, a storage capacitor for storing the electric charge produced by the conversion element, a thin film read transistor connected to the storage capacitor, and a thin film reset transistor also connected to the storage capacitor. To the gates of the read and reset thin film transistors are applied ON and OFF voltages at predetermined timings and these voltages are set to values such that any excessive electric charge produced in the storage period is discharged by way of the thin film reset transistor, not by way of the thin film read transistor, in the same storage period.

The invention provides an object detection method, a system and a stereoscopic vision system; wherein the method comprises the following steps: determining the diameter of the dispersed spot of a lens; adjusting image distance to a defocusing state according to the diameter of the dispersed spot; adjusting image distance of the lens, increasing imaging area of the object, increasing detection range of the object to facilitate the camera to collect images under the state of dispersed spot; as the dispersed spot facilitates recognition area to rise and pixel to increase, as a result, influence of interfering pixel is reduced, meanwhile, precision of calculated sub-pixel level areal coordinate is improved.

An image pickup apparatus includes an insulating substrate, and a plurality of pixels each including a conversion element configured to convert incident light or radiation into a charge and also including a switch element configured to transfer an electric signal corresponding to the charge generated by the conversion element. Gate wiring is configured to drive the switch element to transfer the electric signal through signal wiring. The plurality of pixels, the signal wiring, and the gate wiring are disposed on one surface of the insulating substrate. The insulating substrate has vias that provide electrical connections between the one surface and an opposite surface of the insulating substrate.

The invention discloses a spaceborne multi-baseline holographic SAR imaging method, which realizes 360-degree omnibearing imaging based on multiple navigation geosynchronous orbit baselines. The method comprises the following steps: S1, an orbit model for geosynchronous orbit spaceborne holographic SAR imaging is constructed; S2, based on the orbit model and an imaging geometric model of the geosynchronous orbit spaceborne holographic SAR imaging, a geosynchronous orbit spaceborne holographic SAR echo signal model is constructed; S3, two-dimensional holographic imaging is carried out; S4, a three-dimensional imaging sparse basis is constructed through constructing an altitude sparse basis; S5, the altitude of a ground target is reconstructed by using a compressed sensing reconstruction algorithm; and S6, a holographic image is displayed. The problems that the airborne platform has a small detection range, the detection area is limited, and the holographic imaging quality is affected bythe movement of a carrier and the like can be solved.

A DMD multi-region laser projection system and exposure method are disclosed, the system includes a DMD control system, an optical system, a mask, a graph division system and a motion control system,a plurality of exposure patterns are displayed on a single DMD, combined with the optical system, the plurality of exposure patterns are mapped to different exposure areas of the mask for exposure, and the whole system can use a single DMD or a plurality of DMDs for simultaneous exposure, and exposure according to the method of the invention can rapidly increase the overall exposure time and savethe material cost of the DMD at the same time.

The invention provides a zoom lens. The zoom lens sequentially comprises the following lens groups from the object side to the image side along the optical axis of the zoom lens: a first lens group, wherein a plurality of lenses in the first lens group are arranged at intervals; a second lens group which has positive focal power, wherein a plurality of lenses in the second lens group are arrangedat intervals; a third lens group which has negative focal power, wherein a plurality of lenses in the third lens group are arranged at intervals, the second lens group and the third lens group move along the optical axis to realize continuous zooming, and the zoom lens has a wide-angle end position, a middle end position and a long-focus end position; wherein the entrance pupil diameter (EPD) of the zoom lens, half ImgH of the diagonal length of an effective pixel area on the imaging surface of the zoom lens and the maximum value DTmax in the effective radiuses of the lenses in the first lensgroup, the second lens group and the third lens group meet the following formula: EPD * ImgH/DTmax > 6.5 mm. The zoom lens solves the problem that a zoom lens in the prior art is poor in imaging quality.

The invention discloses a detector capable of conducting double-sided incidence, a detector array, an imaging system and an imaging method. The detector comprises an upper cover plate, a lower cover plate, and an imaging part, a supporting frame and a circuit board which are arranged between the upper cover plate and the lower cover plate, wherein the supporting frame is used for supporting the imaging part, the circuit board is electrically connected with the imaging part, the imaging part is used for converting a ray signal into a charge signal, and the circuit board is used for converting the charge signal into a digital signal; the upper cover plate, the supporting frame and the lower cover plate are all made of materials capable of allowing rays to penetrate through; and the circuit board is arranged in an edge area inside the detector, and the circuit board is not arranged opposite to a main imaging area of the imaging part. The detector provided by the invention can realize front-side or back-side incident imaging. The invention further provides a technical scheme for realizing cooperative work and seamless splicing imaging of a plurality of detectors in the detector array.

A near-eye optical system receiving an image beam including a first optical waveguide is provided. The first optical waveguide expands the image beam in a first direction and includes first and second surfaces, first and second beam-splitting surfaces, and a plurality of first and second reflective inclined surfaces. The first and second beam-splitting surfaces are located in the first optical waveguide and disposed in a tilted manner relative to the first and second surfaces. The first and second beam-splitting surfaces have opposite tilt directions. The first and second beam-splitting surfaces receive an image beam incident from the first surface so that a first portion of the image beam passes through and a second portion of the image beam is reflected. The near-eye optical system further reduces a thickness of the optical waveguide and alleviates the issue that the image beam is not completely projected to the optical waveguide.

The invention discloses a splicable detector array, an imaging system and an imaging method. The detector array comprises at least two flat panel detectors, wherein each flat panel detector comprisesan upper cover plate, a lower cover plate, an imaging part and a circuit board; the imaging part and the circuit board are arranged between the upper cover plate and the lower cover plate; the circuitboard is electrically connected with the imaging part; the imaging part is used for converting a ray signal into a charge signal; the circuit board converts the charge signal into a digital signal; the first flat panel detector is provided with a first inclined side surface inwards inclining from the upper cover plate to the lower cover plate; the second flat panel detector is provided with a second inclined side surface outwards inclining from the upper cover plate to the lower cover plate; the imaging part of the second flat panel detector is provided with a flexible substrate; the imagingpart of the second flat panel detector extends to the second inclined side surface from the upper cover plate; the two flat panel detectors are spliced in the forward direction; and the imaging partsof the two flat panel detectors are arranged at the splicing part of the two inclined side surfaces in an up-and-down way. The detector array has the advantage that the cooperative work and the seamless splicing imaging of a plurality of detectors are realized.

The invention provides an automatic balancing device, tomography equipment and an automatic balancing method. The automatic balancing device comprises a base, a rotary substrate, a ray emission assembly, a ray detection assembly and two counterweight assemblies, the rotary substrate has a radial direction and a tangential direction perpendicular to the radial direction, the ray emission assembly and the ray detection assemblies are oppositely installed on the rotary substrate in the radial direction, the ray detection assembly can move in the tangential direction, the two counterweight assemblies are symmetrically arranged on the rotary substrate with the radial direction as a symmetric line, and the counterweight assemblies are obliquely arranged relative to the radial direction. The detection assembly has a plurality of scanning view fields in the process of moving along the tangential direction, and a plurality of scanning view fields can be superposed and fused to obtain the overall image information of a scanned object so as to expand the scanning view field of the automatic balancing device and increase the imaging area of the scanned object.

The invention relates to a super-definition large-area-array day and night dual-purpose zoom lens, which comprises a front fixing group, a zoom group, an iris diaphragm, a middle fixing group, a compensation group and a rear fixing group which are arranged along a light incidence direction, and is characterized in that the front fixing group comprises a meniscus negative lens A1, a biconvex positive lens A2 and a meniscus positive lens A3; the zoom group comprises a biconcave negative lens B1, a biconcave negative lens B2, a biconcave negative lens B3 and a biconvex positive lens B4; the middle fixed group D comprises a biconvex positive lens D1, a meniscus positive lens D2, a biconcave negative lens D3, a biconcave negative lens D4 and a biconvex positive lens D5; the compensation group comprises a biconvex positive lens E1 and a biconvex positive lens E2; and the rear fixed group comprises a biconcave negative lens F1, a meniscus negative lens F2, a meniscus positive lens F3 and a biconvex positive lens F4. The lens adopts a five-group zoom structural form, various aberrations of a large-aperture large-image-plane lens can be fully balanced, through reasonable material selection and focal power ratio, the sensitivity of the lens is reduced, the imaging quality of the lens is improved, and the lens has productivity.