107results about How to "Good image quality" patented technology

A system for landing or docking a mobile platform is enabled by a flash LADAR sensor having an adaptive controller with Automatic Gain Control (AGC). Range gating in the LADAR sensor penetrates through diffuse reflectors. The LADAR sensor adapted for landing/approach comprises a system controller, pulsed laser transmitter, transmit optics, receive optics, a focal plane array of detectors, a readout integrated circuit, camera support electronics and image processor, an image analysis and bias calculation processor, and a detector array bias control circuit. The system is capable of developing a complete 3-D scene from a single point of view.

The invention provides a camera module, and an encapsulating structure and an encapsulating method thereof. The encapsulating structure of the camera module comprises a circuit board, an image sensing chip, a passive element, an encapsulating part and an infrared filter, wherein the circuit board is provided with a first surface and a second surface; the image sensing chip and the passive element are arranged on the first surface of the circuit board, and the image sensing chip is provided with a sensing region and a non-sensing region and electrically connected with the circuit board; the encapsulating part is arranged on the first surface of the circuit board and at least part of the non-sensing region of the image sensing chip and encompasses the passive element; the infrared filter is arranged on the encapsulating part and located in a position above the sensing region of the image sensing chip, and forms an enclosure space together with the encapsulating part and the sensing region of the image sensing chip. The infrared filter of the encapsulating structure of the camera module is smaller in size so as to facilitate material saving and cost reduction; besides, impurities such as dust are unlikely to fall or be left in the enclosure space, so that the imaging quality is high.

In a beam-spot position compensation method for use in an optical scanning device which scans a surface of a photosensitive medium by a light beam emitted by a light source, a plurality of sections are defined by dividing a scanning region on the scanned surface. An emission timing of the light beam for every section is adjusted so that a spacing between beam-spot positions corresponding to pixels of start and end of each section is changed by a predetermined amount. The sparseness or denseness of beam-spot position spacings of the plurality of sections in the whole scanning region is compensated.

The invention discloses a new optical system for helmet display; it relates a light, compact and well optical aberration correction adjustable focus optical system, it can be used as visual optical system for perspective helmet display apparatus. The visual optical system comprises a group of eyepiece lens and a built-up prism construction. The eyepiece lens comprises at least a penetrance element. The built-up prism construction comprises at least a concave reflector, at least a half reflecting and half translucenting optical surface, light reflects at least two times between the optical surfaces, the refractivity of the polarizability full filled in the space between the optical surfaces. The visual optical system uses mini LCD as image plane display equipment, it can fuse the image sent from the image source in internal channel by the visual optical system with the image outside, making the said image form at infinite distance in the direction of observation, and it can focus to a point limited distance from the observer.

There are provided the following components: an FPD that has a plurality of pixels, in which signal electric charges corresponding to amounts of X-rays incident are accumulated, and that is capable of nondestructively reading data which indicates the X-ray image; an amplifier that amplifies a signal sent from the FPD and has a variable gain; an evaluation value calculation section that obtains an evaluation value for evaluating the X-ray image; and a gain adjustment section that calculates a new gain of the amplifier used at the time of rereading. The gain of the amplifier is changed to a value of a new gain which is calculated by the gain adjustment section, and the X-ray image is reread.

The invention discloses an optical imaging system for vehicle monitoring. The optical imaging system comprises a front lens group with positive focal power, a diaphragm, a rear lens group with positive focal power, and an optical filter which are successively arranged from an object side to an image side. The front lens group successively comprises a first lens with negative focal power, a second lens with negative focal power, and a third lens with positive focal power. The rear lens group successively comprises a fourth lens with positive focal power, a fifth lens with negative focal power, and a sixth lens with positive focal power, wherein the fourth lens and the fifth lens form a balsaming lens. By means of reasonable lens structural design, the optical imaging system for vehicle monitoring is provided with an optical length less than 18.3mm, a 4.8mm back focal length, a 143-degree total field angle, and 2-million-piexl resolution. The optical imaging system has small lens size, relatively large aperture, good imaging quality at night with low illumination, and effectively decreased in cost.

The invention discloses a low- sensitivity high-resolution slim camera which comprises five groups of lenses and conforms to the following formula: -1.2<=F5/F<=-0.5, wherein F represents the focus of a whole system, and F5 represents the focus of the fifth lens. On the basis of conformance with the formula, the camera can be made slimmer, and the sensitivity of the fifth lens can be reduced. vG1>=50, vG2<=30, wherein vG1 represents the Abbe number of the first lens E1, and vG2 represents the Abbe number of the second lens. The magnification chromatic aberration is corrected, and the resolution is enhanced. F1/F<=0.75, wherein F represents the focus of the whole system, and F1 represents the focus of the first lens; F2/F1<=-1, wherein F2 represents the focus of the second lens, and F 1 represents the focus of the first lens; -1.2<=G1R1/G1R2<=-0.25, wherein G1R1 represents the curvature radius of one side of the first lens, which is towards an object, and the G2R2 represents the curvature radius of the side of the first lens, which is towards an image. The conformance with the three formulas can reduce the sensitivity of the first and the second lenses.

A Computer Tomography (CT) C-arm system and method for examination of an object is provided. The Computer Tomography (CT) C-arm system for examination of an object of interest, the CT-C-arm system comprises an X-ray tube adapted for generating X-rays, an X-ray detection unit to acquire a set of CT slices, wherein the X-ray tube, and the X-ray detection unit are adapted to be rotatable on a C-arm around a common axis around the object under examination and a processing unit by which the following steps are executable: acquiring a first 3D data volume of the CT slices using first scan parameters; adjusting the first data volume to a second data volume (segmented volume) such that voxel values of the first data volume of at least one predefined range of Hounsfield (H) are set to an at least one predefined H-value; generating a forward projection of the second data volume using the first scan parameters; reconstructing the projection to a third data volume; generating a fourth data volume (artefact-only volume) by subtracting the third volume with the second volume; generating a fifth volume by adding the first volume with the fourth volume.

The invention provides an optical device for a wide waveband plane grating dispersion type imaging spectrometer, and relates to the technical field of imaging spectrometers in the earth observation field. The optical device solves the defects of the conventional plane grating spectrometer that only the aberration of center wavelength is corrected, the residual aberration is larger, and large astigmatism exists along the length direction of a slit. The optical device consists of an aperture diaphragm, an off-axis parabolic mirror, an entrance slit, a spherical collimating mirror, a plane grating, a plane mirror, a toroidal focusing mirror and a planar array focal plane detector. The entrance slit is positioned on a focal plane of a front optical system; the front optical system consists of the aperture diaphragm and the off-axis parabolic mirror; the emergent light passing though the entrance slit is projected onto the spherical collimating mirror and is then projected onto the plane grating after being collimated by the spherical collimating mirror; and the diffraction light emerged from the plane grating is projected onto the toroidal focusing mirror after being reflected by the plane mirror and then is focused and imaged by the toroidal focusing mirror onto the planar array focal plane detector. The optical device is particularly suitable for a hyperspectral imaging system in the aerospace remote sensing earth observation field.

The invention relates to an optical system and a design method for a large caliber grating imaging spectrometer. The invention solves the problem of excessively low energy utilization rate of the grating imaging spectrometer by adopting a large caliber telescopic objective. Due to the catadioptric configuration of an improved gassegrain system, the invention solves the problems of excessively large barrel length and excessively large volume of a large caliber transmission-type telescopic objective and ratio imbalance of a complete instrument formed after the large caliber transmission-type telescopic objective is combined with a spectral imaging system. The large caliber telescopic objective is combined with the spectral imaging system with a convex surface grating to form the optical system for the large caliber grating imaging spectrometer. The optical system has a good aberration correction effect in the broad band range and obtains high imaging quality. When the telescopic objective is matched with the spectral imaging system in a relative aperture mode, the value aperture of the spectral imaging system is greater than that of the telescopic objective, so that the optical system is effectively prevented from generating vignetting. According to the invention, an aspherical mirror is not adopted in the whole optical system, so that the processing difficulty and the cost of the whole optical system are reduced. The invention is suitable for the technical field of an imaging spectrum.

In a liquid-crystal display apparatus, each color pixel has three dots enclosed by adjacent signal lines and adjacent scanning lines. Each dot is provided with a switching device and a dot electrode. Each color pixel is provided with three display electrodes electrically connected to three dot electrodes through contact holes passing through an insulation layer. The display electrodes are disposed so as to overlap with the three dot electrodes. Each of the display electrodes is electrically connected to only one of the three dot electrodes. Each of the dot electrodes is electrically connected to only one of the display electrodes.

A method for controlling an exposure duration of a high dynamic range image, including: consecutively generating a first high dynamic range image having a first exposure duration ratio and a second high dynamic range image having a second exposure duration ratio greater than the first exposure duration ratio; performing image quality evaluations on both the first high dynamic range image and the second high dynamic range image to obtain a first image quality and a second image quality, respectively; and determining whether the second image quality is better than the first image quality; if yes, generating a third high dynamic range image having a third exposure duration ratio greater than the second exposure duration ratio; if not, generating the third high dynamic range image having the first exposure duration ratio and setting the first exposure duration ration as the optimal exposure duration ratio.

The invention relates to an image restoration method and system based on priori knowledge constraint and computer equipment. The image restoration method comprises the steps of constructing a missingcontent generation network, wherein the missing content generation network comprises a generator used for receiving an image with a missing area and outputting a restored image, and a discriminator used for identifying a training result when the missing content generation network is trained; constructing a content constraint network, wherein the content constraint network is used for providing constraint conditions for the generator to output the restored image; training the missing content generation network by using a data set in a specified field; generating a network based on the trained missing content, and performing iterative optimization through back propagation by taking the conditional network as a constraint to obtain a hidden variable; and inputting the image with the missing region into the trained missing content generation network, and solving the restored image by combining the hidden variable of the missing content generation network.

An image recording element having a support having thereon an image-receiving layer, the recording element containing core/shell particles wherein the shell of the particles is an oligomeric or polymeric aluminosilicate complex or an aluminosilicate particulate, the complex and the particulate having a positive charge and being counter balanced by an anion.

The invention discloses an exposure method for a mammary gland machine device, and the mammary gland machine device. The method comprises the steps of performing pre-exposure on to-be-exposed mammarygland to obtain a pre-exposure image; taking the pre-exposure image as an object image, calculating a gradient magnitude mean value of a gland part in the object image, and calculating a percentage ofa first gland point set in a second gland point set, wherein the first gland point set comprises all pixel points of the gland part in the object image, and the second gland point set comprises all pixel points of a mammary gland region in the object image; and according to the gradient magnitude mean value and the percentage corresponding to the pre-exposure image, determining formal exposure time of the to-be-exposed mammary gland. The characteristics of the mammary gland are considered when the formal exposure time is set, so that when the to-be-exposed mammary gland is exposed by adoptingthe formal exposure time, the gland part in a formal exposure image can present relatively high image quality.

The invention relates to an optical imaging lens and an electronic device applying the optical imaging lens. The optical imaging lens comprises six lenses and is characterized in that an object side surface of the first lens is provided with a convex surface portion located in an area nearby the circumference; the second lens is made of plastic; an image side surface of the third lens is provided with a concave surface portion located in an area nearby an optical axis; the fourth lens is provided with a positive refractive index, an object side surface of the fourth lens is provided with a concave surface portion located in an area nearby the circumference, and an image side surface of the fourth lens is provided with a concave surface portion located in an area nearby the circumference; an image side surface of the fifth lens is provided with a convex surface portion located in an area nearby the optical axis; and an object side surface of the sixth lens is provided with a convex surface portion located in an area nearby the optical axis, and the sixth lens is made of the plastic. The electronic device comprises a casing and an image module, wherein the image module is installed in the casing and comprises the optical imaging lens, a lens cone, a module rear base unit and an image sensor. The optical imaging lens and the electronic device applying the optical imaging lens are enabled to have good practical performance, and thin and short structural design is facilitated.

With an optical head, a stimulating ray beam produced by a stimulating ray source is irradiated onto an image carrier supported on a stage, and light emitted by the image carrier is collected and guided toward a photodetector. At least either one of the optical head and the stage is moved with respect to the other and in two-dimensional directions along a plane parallel with the other. The optical head comprises a concave mirror for reflecting the stimulating ray beam, which travels in parallel with the stage, toward the image carrier, and a lens for converging the stimulating ray beam, which has been reflected from the concave mirror, onto the image carrier. The lens and the concave mirror also guide the light, which is emitted by the image carrier, toward the photodetector.

A transflective display has a viewing side and a non-viewing and includes a front polarizer with a transmission axis arranged in a first direction; a front substrate coupled to the non-viewing side of the front polarizer; a liquid crystal (LC) layer coupled to the non-viewing side of the front substrate; a quantum rod layer with one or more quantum rods aligned in a second direction, wherein the quantum rod layer is coupled to the non-viewing side of the LC layer; a rear substrate coupled to the non-viewing side of the quantum rod layer; and a backlight coupled to the non-viewing side of the quantum rod layer, wherein the quantum rod layer emits partially polarized light with a major axis substantially parallel (i.e. within ±15°) to the second direction. Each of the one or more quantum rods includes a long axis and a short axis, and the long axis is substantially parallel to the second direction.

The invention discloses a remote laser night-viewing device. The invention adopts a technical scheme that: the remote laser night-viewing device comprises a shell and a laser illuminator arranged in the shell, wherein a telephoto lens and an integral camera are fixedly arranged in the shell; a main controller is also arranged in the shell; and the main controller can control the zoom focusing of the integral camera and the telephoto lens, the video intelligent switch between the integral camera and the telephoto lens, and the size of laser spots. The device takes full use of the advantages of large remote light transmission and good image quality of the telephoto lens, embodies the characteristics of wide close-distance observation range and clear images of the integral camera, and greatly reduces the production cost on the premise of realizing remote night-viewing monitoring.

An aperture comprising a round filter portion and at least one annular filter portion is provided. The round filter portion and the annular filter portion are forming a round zone. A transmission wavelength range of the round filter portion is larger than a transmission wavelength range of the annular filter portion. A projection lens system with the aperture can produce images having higher brightness of the images and better image quality.

The present invention relates to a method for making environment-protecting type high-clearness photograph by means of processing image data existed in the electronic form and combining ink-jet printing technique with transfer technique and its special-purpose equipment. It includes the following steps: (1). inputting the data signal into computer working station; (2) properly processing image file with formed digital format and converting it into the data which can be read by printing machine; (3) using printer to print the data on the transfer paper; (4). using thermal transferring machine to transfer it on the photograph carrier; and (5) cutting the photograph image transferred on the photograph carrier by using cutting device.

X-ray images are recorded of a patient's heart and the heartbeat phase is registered as that is done. The heartbeat phases are coarsely divided into intervals and all X-ray images that have been assigned heartbeat phase from the interval are used for reconstructing a 3D image dataset. The movement fields of the other 3D image datasets are then calculated for one of said 3D image datasets. Movement fields are vector fields indicating the movements of similar structures from one local area to the other. A departure is then made from the coarse interval division, and for each heartbeat phase a movement field is interpolated individually or at least for fairly short intervals from the movement fields determined in advance, which field is used for generating a deformed 3D image dataset that has been imaged onto a reference heartbeat phase. The deformed 3D image datasets are then added together.

An image developing method is disclosed that is able to efficiently remove degraded toner on a developing agent carrier, prevent formation of abnormal images, ensure good image quality over time, and increase the service life of the device. The developing method includes a step of calculating an amount of consumption of the developing agent during image formation and an amount of consumption of the developing agent in a compulsory toner consumption mode under different calculation conditions between the image formation and the compulsory toner consumption mode. In the compulsory toner consumption mode, a developing bias different from a developing bias used during image formation is applied for a predetermined time period to discharge residual developing agent on a developing agent carrier to a latent image carrier.

The invention relates to an optical lens. The invention discloses an optical imaging lens which includes an aperture, and first, second, third and fourth lenses in sequence from an object side to an image side along an optical axis, each lens has an object side face and an image side face, and the optical lens satisfies TTL/T4<=6.7 and ALT/T3<=3.6. The invention also discloses an electronic device which includes an enclosure, and an image module which is installed in the enclosure and includes the abovementioned optical imaging lens, a lens barrel, a module holder unit, a substrate and an image sensor. The optical imaging lens and the electronic device using the same are used for optical photography.

The invention relates to a preparation method of dry-type nonmagnetic single-component positive electricity carbon powder for a laser printer, which is implemented according to the following technical proposal: the raw material for the semi-finished product in the dry-type nonmagnetic single-component positive electricity carbon powder for the laser printer contains the following components in parts by weight: 100 parts of adhesive resin, 1 to 20 parts of coloring agent, 0.1 to 15 parts of demolding agent and 0.1 to 10 parts of charge control agent; and the preparation method comprises the steps of uniformly mixing the adhesive resin, the coloring agent, the demolding agent and the charge control agent in a high-speed mixer in proportion, melting and mixing by using an extruder, inputting into a ball mill for roughly crushing after extruding and performing through the extruder, further crushing and grading through a jet mill to obtain the semi-finished product, and adding an external additive in the semi-finished product to prepare the product in the invention. The product in the invention has the advantages that excellent image quality can still be maintained even in a low temperature and moisture environment and a high temperature and moisture environment, the printed images have high durability and low cost, and the product is suitable for a plurality of positive electricity laser printers.

The invention discloses a large-aperture off-axis reflection type quantitative consistency test and calibration device for multiple optical axes. The device comprises a large-aperture off-axis reflection type parallel light tube assembly, a CCD camera, an image collection processing assembly and a three-dimensional (3D) adjusting platform; the large-aperture off-axis reflection type parallel lighttube assembly, the CCD camera and the image collection processing assembly are mounted on the 3D adjusting platform; the large-aperture off-axis reflection type parallel light tube assembly comprisesa multispectral light source, a cross target, a spectroscope, a secondary reflector, a primary reflector, an attenuation sheet and a planar mirror for autocollimation; and the spectroscope is arranged between the secondary reflector and the cross target, the multispectral light source is arranged in front of the cross target, the CCD camera is arranged beside the spectroscope, the primary reflector cooperates with the secondary reflector, and the planar mirror for autocollimation is arranged in front of the primary reflector. The device can be widely applied to consistency detection and calibration of multiple optical axes of multiband photoelectric devices in different platforms.

The invention discloses an assembly method for an array-type lens. The assembly method includes the following steps: A, mounting a third lens set (60) in a lens barrel (70); B, assembling a second lens set (40); C, assembling a first spacer (30); D, assembling a first lens set (20); E, assembling a pressing ring (10). By the assembly method, a lens structure capable of correcting the problem of optical axis eccentricity can be utilized, and yield of the array-type lens is increased substantially by solving the problem of optical axis aligning.

The invention discloses a lighting system for automatic optic inspection and a combination of the lighting system and an image system, the lighting system is used for lighting an object to be detected and comprises a first light source, a second light source, a third light source, a first optical element and at least three second optical elements. The second optical elements are respectively arranged at the light output ends of the first light source, the second light source and the third light source and can centralize the light rays output by each light source. The light output ends of the first light source and the second light source symmetrically point to the surface of an object; the first optical element is aligned with the symmetrical surface and can guide the light ray which is output by the third light source to the surface of the object. In the invention, the total length of optical path length of light can be reduced and the space needed by the lighting system is effectively reduced.

A gamma correction method adapted for a liquid crystal display panel is provided. The gamma correction method includes the following steps. A reference gamma curve is provided. The LCD panel is lighted up with at least one of primary-color frames. Gamma voltages of the primary-color frame are set for the LCD panel based on the reference gamma curve to obtain at least one primary-color gamma curve. The gamma correction is performed on the LCD panel based on the at least one primary-color gamma curve or a linear combination curve of the at least one primary-color gamma curve. By using the gamma correction method, the LCD panel could be allowed to provide good image quality.