401 results about "Contact image sensor" patented technology

A contact image sensor having: an illumination; a first SBG array device; a transmission grating; a second SBG array device; a waveguiding layer having a multiplicity of waveguide cores separated by cladding material; an upper clad layer; and a platen. The sensor also including an optical device for coupling light from an illumination source into the first SBG array; and an optical coupler for coupling light out of the cores into output optical paths coupled to a detector having at least one photosensitive element.

The present invention relates to an information card with multiple storage media. Combining reading and writing characteristics of magnetic strip storages, ICs, PFIDs and etc. with large storage capacity of a compound printing 2D barcode, the invention uses a base card with a magnetic strip storage medium or a base card beset with an IC read-write chip, and a RF read-write chip. On said base card contains a first 2D barcode which has different reflectivities to lights in the first spectrum area between bars and spaces, there is a designated relation between data stored in the magnetic strip or the IC chip, RF chip and data stored in the first 2D barcode. The invention discloses a read-write device of the information card comprising a Contact Image Sensor (CIS), a magnetic head or an IC chip reader, an RF chip reader. The invention further discloses a method for reading and writing data in said information card.

A contact image sensor having a waveguiding structure for propagating light in a first direction including, in series, a first clad medium, a first core, a switchable grating clad, a second core, and a second clad medium sandwiched by transparent substrates, patterned parallel electrode elements orthogonally traversing the waveguides, a light source, a platen and a detector. Switchable grating regions overlapped by a first voltage-addressed electrode element diffract TIR light from the first core towards the platen. Switchable grating region overlapped by a second voltage-addressed electrode element diffract TIR light reflected from the platen into a TIR path within the second core.

Systems and methods for contact image sensor based inspection of specimens are provided. A system configured to inspect a specimen may include a contact image sensor. The contact image sensor may include a light source configured to direct light toward a surface of the specimen and a linear sensor array configured to detect light returned from the surface. The system may further include a processor configured to determine a presence of defects on the surface using the detected light. A method for inspecting the specimen may include directing light from a light source toward a surface of the specimen and detecting light returned from the surface using a linear sensor array. The light source and the linear sensor array may be arranged in a contact image sensor. The method may further include determining a presence of defects on the surface from the detected light.

A contact image sensor is received and held in a holder slidably mounted on a rectangular lower frame and is disposed in parallel to the two short sides of the lower frame to pick up the image of a detection object placed on the transparent plate mounted on a rectangular upper frame. A rod-like guiding member having two ends respectively mounted on the center of the two short sides of the lower frame, disposed orthogonal to the longitudinal holder, for guiding the movement of the holder is provided. A connecting member slidably mounted on the guiding member and detachably connected to the holder near the center thereof is provided. A biasing member for biasing the holder upwardly, disposed between the connecting member and the holder is also provided.

The invention provides a design method of a multispectral paper currency detector, sequentially comprising the following steps: firstly, judging the orientation of a paper currency through double photoelectric cell signals and magnetic head signals when the paper currency enters the currency detector and then obtaining a paper currency image by using a CIS (contact image sensor); secondly, carrying out luminance compensation, paper currency edge detection and pretreatment of geometric correction on a collected CIS original image to obtain a standardized paper currency image; thirdly, extracting paper currency image features, distinguishing the truth of the paper currency according to the features and identifying the crown of the paper currency on the basis of an image analysis method; andfourthly, sending the distinguishing result or the crown identifying result to other devices or components through an RS-232, an Ethernet or a universal I / O (Input / Output) signal. Through the method,the truth distinguishing with higher reliability can be realized and the identification of the crowns of the paper currencies can be realized at the same time so that banking systems are supported torealize the scientific management of the currency circulation.

The invention provides a high-speed and high-resolution number collecting device of a banknote sorting machine and an identification method. The high-speed and high-resolution number collecting device of the banknote sorting machine comprises image sensors, a multichannel A / D (analog to digital) converter chip, a programmable logic chip, a digital signal processor chip, a dynamic memory chip and a communication structure chip, wherein the image sensors are respectively connected with the multichannel A / D converter chip, the multichannel A / D converter chip is connected with the programmable logic chip, and the programmable logic chip is respectively connected with the digital signal processor chip and the dynamic memory chip. The invention realizes the high-resolution collection to banknote images under the condition of high-speed operation of the banknotes. The contact type image sensors have the advantages of low cost, small volume and low requirements for light source performance. Positioning and cutting thresholds are not needed to be set in the identification method of banknote numbers, so that an accurate positioning and cutting position and ideal identification results can be obtained when the banknotes are depreciated and polluted.

The invention provides a photoelectric conversion device, in which a decrease in sensitivity and a crosstalk between wirings are suppressed. Plural pixel columns are arranged in one direction, plural pixels are arranged in a different direction to the one direction in a column manner in the pixel column, and the pixel includes a photodiode PD, a reset transistor M4 for resetting the photodiode PD, and a source follower input transistor M3 for receiving a signal from the photodiode PD. An independent readout wiring 16 is individually provided for each pixel. The reset transistor M4 and the source follower input transistor M3 included in one pixel column or another pixel column are arranged between the photodiode column in one pixel column and the photodiode column in another pixel column arranged adjacent to the one pixel column.

The present invention relates to an information card with multiple storage media. Combining reading and writing characteristics of magnetic strip storages, ICs, PFIDs, and etc. with large storage capacity of a compound printing 2D barcode, the invention uses a base card with a magnetic strip storage medium or a base card beset with an IC read-write chip, and a RF read-write chip. On said base card contains a first 2D barcode which has difference reflectivities to lights in the first spectrum area between bars and spaces, there is a designated relation between data stored in the magnetic strip or the IC chip, RF chip and data stored in the first 2D barcode. The invention discloses a read-write device of the information card comprising a Contact Image Sensor (CIS), a magnetic head or an IC chip reader, an RF chip reader. The invention further discloses a method for reading and writing data in said information card.

An image reader includes a casing, a contact glass plate, a contact image sensor, and a sliding mechanism; wherein the contact image sensor has a housing, a light source attached to the housing so as to face the contact glass plate, a plurality of light receiving elements attached to the housing so as to face the contact glass plate and aligned in parallel in a longitudinal direction of the housing, and a bearing formed integral to the housing at a position below a lower surface of the housing; and the sliding mechanism includes a guide shaft provided on the casing and extending in a short direction of the housing and inserted through the bearing, and an urging member elastically which urges the guide shaft toward the contact glass plate so that the housing is pressed against the contact glass plate.

A contact image sensor unit includes: a light source (10) illuminating an original; a rod-like light guide (11) guiding light from the light source to the original; an imaging element (12) forming reflected light from the original on a plurality of photoelectric conversion elements; a sensor substrate (14) on which the plurality of photoelectric conversion elements are mounted; a frame (15) to which they are attached and which has a positioning part (200) for attaching the light guide (11) thereto; and a supporting member (16) which attachably / detachably supports the light guide (11) and is attachably / detachably attached to the positioning part (200). Since the light guide (11) can be attached to the frame (15) without using an adhesive, the deformation of the light guide (11), the warpage of the contact image sensor unit and so on can be prevented.

To prevent such a situation that a signal from a pixel in a dark state is output at a level shifted from an originally set level to deteriorate an image quality, and to improve the image quality. A photoelectric conversion apparatus according to the present invention includes: a plurality of photoelectric conversion elements; a plurality of amplifying units for amplifying a signal in accordance with a photo-carrier generated in the photoelectric conversion elements; a plurality of signal holding units for holding output signals from the amplifying units through a plurality of switch units; and a control signal supplying unit for supplying a control signal to the switch units through a control line, in which the control line is sequentially connected to the plurality of switch units and has both ends connected to the control signal supplying units, or a change rate with time of an amplitude of a signal held by the signal holding units is set lower than a change rate with time of am amplitude of the control signal at the time of turning off the switch units.

A scanning module includes a contact image sensor unit and a supporting base. The contact image sensor unit has a top surface, a bottom surface, a front surface and a back surface. The supporting base has a guiding portion, a positioning board mounted on the guiding portion, the two sides of the positioning board extends sideward and bends upward to form an elastic arm respectively, the contact image sensor unit is placed on the positioning board and the elastic arm elastically contacts the bottom surface of the contact image sensor unit. The two sides of the supporting base of the scanning module have an elastic arm respectively, the elastic arm contacts the contact image sensor unit directly and makes sure that the contact image sensor unit contacts the glass tightly.

The invention discloses a testing method and a testing probe platform for an image sensor chip and aims to provide a testing method for a contact image sensor (CIS) chip and a probe platform for testing the performance of the image sensor, which have the advantages of simple structure, high universality, low input cost and high testing efficiency. Testing on the image sensor chip to be tested is performed under the state that a plurality of chips are combined to form a wafer. The probe platform designed by utilizing the testing method for the image sensor chip comprises an XY platform capable of horizontally moving front and back and left and right; the XY platform is provided with a lifting platform capable of vertically moving; the lifting platform is provided with a wafer carrying disk which is used for containing the wafer and is capable of rotating in the circumferential direction; and a probe clip is arranged above the wafer carrying disk through a support frame in the manner of suspension. The testing probe platform is characterized in that a light source for generating light is arranged in the lifting platform below the wafer carrying disk. The testing method and the testing probe platform for the image sensor chip are capable of reducing damage to the CIS chip while ensuring the positioning accuracy, and is capable of greatly improving the degree of automation and the efficiency of the testing.

The invention provides an image compensation and correction method and a banknote detection and identification device. The image compensation and correction method is applied to the banknote detection and identification device. The banknote detection and identification device comprises a micro control unit, a field programmable gate array, an AD (Analog to Digital) chip, a driving circuit, a static random access memory and a contact image sensor, wherein the field programmable gate array is connected with the micro control unit, the AD chip, the driving circuit and the static random access memory are connected with the field programmable gate array respectively, and the contact image sensor is connected with the AD chip and the driving circuit respectively. A compensation and correction lookup table is pre-stored in the static random access memory and the field programmable gate array accesses the static random access memory to obtain banknote compensation and correction data corresponding to banknote image pixels and transmit to the micro control unit, so that the micro control unit directly obtains the banknote compensation and correction data from the field programmable gate array without performing compensation and correction on the obtained banknote image pixels any more, accordingly the system performance of the micro control unit is improved, and then the working efficiency of the banknote detection and identification device is improved.

An image reading apparatus of a contact image sensor type includes an area light source. The image reading apparatus is used for reading a light transmitting original placed on an original base by irradiating light thereto from the area light source and receiving transmission light. The original base has an uneven portion on a front surface on the side on which the light transmitting original is placed so that the adhesion of the light transmitting original to the original base is prevented upon placing the light transmitting original on the original base. The uneven portion does not effect optical characteristics for reading the light transmitting original.

A contact image sensor unit includes: a light source (10) illuminating an original; a rod-like light guide (11) guiding light from the light source to the original; an imaging element (12) forming reflected light from the original on a plurality of photoelectric conversion elements; a sensor substrate (14) on which the plurality of photoelectric conversion elements are mounted; a frame (15) to which they are attached and which has a positioning part (200) for attaching the light guide (11) thereto; and a supporting member (16) which attachably / detachably supports the light guide (11) and is attachably / detachably attached to the positioning part (200). Since the light guide (11) can be attached to the frame (15) without using an adhesive, the deformation of the light guide (11), the warpage of the contact image sensor unit and so on can be prevented.

A web inspection module is described for scanning an imprinted web in a printing press. The web inspection module includes a light source for illuminating a portion of the web, a contact image sensor having a plurality of sensing elements, and a processor for receiving and processing image data representative of the imprinted web.

The invention discloses a method and a device for performing multi-spectral detection on the surface quality of fabrics. The device consists of a contrast image sensor (CIS) array, a multi-spectral LED on-off controller, an image data acquirer, a motor controller, a master controller, a touch screen or keyboard, a display, an inkjet indicator, a communication interface and a printer, wherein the CIS array consists of contact image sensors. The device is characterized in that: the master controller controls the running of a motor in a cloth inspecting machine by the motor controller; the fabrics pass by the CIS array under the drive of a power device of the cloth inspecting machine; every step the motor moves forwards, image data acquisition is performed under the illumination of various spectrums; the master controller identifies image data, stores the information of the positions, types, levels and the like of flaws and foreign yarns, and transmits the information to a monitoring center through the communication interface; the inkjet indicator makes marks at the positions of the flaws and foreign yarns by using ink which is easy to clean; and the printer can output detection reports.

An image scanning device is provided with a transparent plate, a contact image sensor, a scanning device casing, a cover member, and a display device. An image medium having an image to be scanned is placed on the transparent plate. The contact image sensor is disposed below the transparent plate, and scans the image of the image medium placed on the transparent plate. The scanning device casing houses the transparent plate and the contact image sensor. The cover member covers a top face of the transparent plate. The display device is capable of moving between a lying position and a standing position. In a state where the display device is positioned anywhere between the lying position and the standing position, a top end of the display device is lower than a top end of the cover member, and a bottom end of the display device is higher than a bottom end of the scanning device casing.

The invention belongs to the field of financial tools and discloses a multispectral image acquisition and processing method for a contact image sensor, aiming at solving the defects in the prior art that noise points exist in an acquired image, overall brightness difference between segments of the acquired image is great, and images of the same paper money under different light sources cannot synchronously acquired. The method comprises the following steps: an upper multiple-light-source CIS image sensor and a lower multiple-light-source CIS image sensor which are symmetrical to each other are arranged to acquire original images; acquired analog signals are subjected to filtering and then are sent to two independent A / D sampling modules to be quantized so as to obtain digital signals; the A / D sampling modules send the digital signals to a FPGA (Field Programmable Gate Array) for compensating, splicing, compressing and storing; the FPGA sends the signals to a main control chip; the main control chip puts the two-path information into two independent address areas of an external RAM (Random Access Memory) for caching; after whole images are acquired, a DSP (Digital Signal Processor) takes out the images from the external RAM to process. The multispectral image acquisition and processing method has the advantages that the acquired images have less noise; the images of the paper money under different light sources can be synchronously acquired; the acquired images are relatively smooth and the quality of the images is relatively high.

An image quality measurement apparatus measures quality of an image printed on a substrate. The apparatus comprises illumination elements and image sensors, both mounted in close proximity to the substrate, a controller of the image sensors and illumination elements, and an analyzer of the measurements of the image sensor. The measurements can be used as real time feedback to a printer. The measurements may include density, colorimetric data, and inspection of printed sheet using Contact Image Sensors (CIS).

In an image reading apparatus using a contact image sensor, an area light source for reading an image from a film original is provided. The area light source has a light guide plate and an LED device in the center of a side surface on the shorter side of the plate. In the LED device, red-, green-, and blue-LED chips are mounted on the same package and red-, green-, and blue-light are switched and lit. A white bottom plate covers the bottom surface of the light guide plate and a white case frame covers the four side surfaces. A scattering sheet is adhered to the upper surface of the white case frame, that is, a light emitting surface. On the rear surface of the light guide plate, light scatterers are formed by screen printing so that a specific pattern is drawn by high-reflectance white ink.

A contact image sensor includes a first optical sensing element and at least one additional optical sensing element. The first optical sensing element includes plural optical sensing units arranged in a line along a first direction. Plural first image units are successively generated when the first optical sensing element senses a first source light. The at least one additional optical sensing element is disposed at a lateral side of the first optical sensing element, and includes plural optical sensing units arranged in a line along the first direction. When the additional optical sensing element senses an additional source light, plural additional image units are successively generated. The adjacent optical sensing units of the first optical sensing element and the at least one additional optical sensing element are partially overlapped with each other along a second direction, which is perpendicular to the first direction.

The invention relates to a contact image sensor (CIS), belonging to the technical field of image readout devices. The invention is used for identifying the color-changing ink anti-counterfeiting label on the surface of the paper money. The CIS is characterized in that light sources different in light-emitting angles are respectively arranged at the two sides of a lens; and a non-reflecting film is adhered to the inner surface of a transparent board. As the color-changing ink anti-counterfeiting label on the surface of the genuine paper money changes in different colors from different angles, that is, the light irradiates the color-changing ink anti-counterfeiting label on the surface of the genuine paper money in different angles and the reflected light is different, but the counterfeit paper money does not have the characteristic, the light emitted by the two light sources of the CIS respectively irradiates the color-changing ink anti-counterfeiting label on the surface of the paper money in different angles, the reflected light is respectively received by the CIS, the CIS analyzes, processes and compares the two kinds of light received by the CIS and the obtained information is compared with the relevant information of the genuine paper money so as to achieve the aim of identifying authenticity of the paper money.

A contact image sensor is disclosed in the present invention. The contact image sensor includes: a substrate; an array of sensing units, formed above the substrate; a first insulation structure, formed over the sensing units and the substrate; a number of focusing units, formed above the first insulation structure, each focusing unit is aligned above a corresponding sensing unit with the first insulation structure sandwiched therebetween; a conductive metal layer, linked to a control circuit; an array of Organic Light-Emitting Diode (OLED) units, formed above the conductive metal layer and connected thereto; a transparent conductive layer, formed above the array of OLED units, and connected to the control circuit to control the statuses of the OLED units; and a transparent insulation structure, formed above the transparent conductive layer.