Class / Patent application number | Description | Number of patent applications / Date published |
358509000 | Illumination | 51 |
20080204831 | Image producing apparatus, image producing method, and image producing program - An image producing apparatus includes a light-emitting element, a light-receiving section, a control section which controls the light-emitting element to emit a light by outputting a light-emitting control value to the light-emitting element, a recording section which records an ideal output value for every light-emitting control value, an output value acquiring section which acquires a reference output value outputted from the light-receiving section which has received the light from the reference region for every light-emitting control value, and an output section which outputs a difference output value between the reference output value and the ideal output value for every reference output value by comparing the reference output value matched with the same light-emitting control value. | 08-28-2008 |
20080291514 | LIGHT GUIDE DEVICE AND ILLUMINATION MODULE USING THE SAME - An illumination module is provided in the invention. The illumination module includes a light source having a plurality of light emitting elements arranged in a linear array and a light guide device. The light guide device receives light from the light source and generates uniform light which is transmitted onto an article to be scanned, has a longitudinal direction, and includes a diffraction structure and a reflection portion. The diffraction structure has a shape inducing light to be scattered and deflects the scattered light toward the longitudinal direction. The reflection portion reflects the light scattered and deflected by the diffraction structure, and is inclined to have an inclined angle with the light propagating direction. In addition, the reflection portion is formed on the diffraction structure or apart from it. | 11-27-2008 |
20080297861 | IMAGE PROCESSING OF A PORTION OF MULTIPLE PATCHES OF A COLORBAR - An image processing apparatus for use with a printed substrate is disclosed. The image processing apparatus comprises an imaging device configured to receive light reflected from a portion of multiple patches of a colorbar on the printed substrate and configured to process color data from the light reflected from the portion of multiple patches of the colorbar. | 12-04-2008 |
20080316552 | METHOD AND APPARATUS FOR DATA CAPTURE FROM IMAGED DOCUMENTS - Methods and apparatus are disclosed for locating an area of interest within a digital image of a form captured by an imaging scanner. Specific examples include methods and apparatus for optical mark reading with a digital imaging scanner. In many of the methods, an image of a response form is captured by a scanner, and “target” areas for possible responses are located within the image based upon an expected location being adjusted as necessary for certain error-inducing defects in the forms or scanning process. Also disclosed are steps to normalize the darkness values of pixels captured from an optically scanned form. | 12-25-2008 |
20090034030 | MULTI-FUNTIONAL DEVICE HAVING SCANNER MODULE AND IMAGE SCANNING APPARATUS EMPLOYING THE SCANNER MOUDLE - A multi-functional device comprising an image forming apparatus to form a printing image and a scanner module to scan an image in a main scanning direction. The scanner module includes an illuminator to illuminate a light to a document mount, a sensor unit to read an image information of an object placed on the document mount, and an imaging lens which is disposed between the document mount and the sensor unit and focuses the light reflected from the object onto the sensor unit. The illuminator includes a light source to emit light, a light guiding unit which is lengthened in a sub-scanning direction, faces the document mount and changes a traveling path of the light emitted from the light source to illuminate the document mount, and a guide holder which comprises an installation part where the light guiding unit is installed, and a mounting part where the light source holder is mounted to provide the light source at least one side of the light guiding unit. | 02-05-2009 |
20090034031 | IMAGE FORMING APPARATUS - An image forming apparatus which can perform a multiple exposure with a plurality of laser lights driven by the PWM signal without deteriorating the image quality of a line image and a character image. Scanning start points are controlled to be different between a first light beam and a second light beam, among a plurality of light beams emit from a light source, exposing the identical pixel position. | 02-05-2009 |
20090040574 | IMAGE SCANNING APPARATUS AND CONTROL METHOD THEREOF - An image sensor using three-color, e.g., R, G, and B light-emitting elements assures a period in which all the three colors are turned on and periods in each of which one light-emitting element is turned off during a scan period per pixel, and integrates and measures amounts of light of the respective periods. An amount of light based on the OFF light-emitting element is calculated based on a difference between the amounts of light during the full light-ON period and each light-OFF period to define an amount of light of the light-emitting element, and light intensity information corresponding to each light-emitting element is obtained based on a total amount of light during the entire scan period per pixel, and the amount of light of each light-emitting element. | 02-12-2009 |
20090040575 | SCANNING APPARATUS AND METHOD OF DETERMINING QUANTITY OF REFERENCE LIGHT THEREFOR - A scanning apparatus and a reference light quantity determining method includes scanning a patch that does not overlap previously established reference colors but displays each of the previously established reference colors in a plurality of regions that are spaced a portion from each other, and determining reference light quantities based on the scanning result. | 02-12-2009 |
20090086293 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - There is provided a technique to make, in a case where a monochrome image is generated based on a color image, a chromatic image region on the color image distinguishable on the monochrome image. There are included a first image reading unit to acquire monochrome image data by reading an image in monochrome from an original document, a second image reading unit to acquire color image data by reading an image in color from an original document, an extraction image generation unit to generate image data by extracting a chromatic image region in the color image data read by the second image reading unit, and a luminance correction unit to make a correction to increase, based on the image data generated by the extraction image generation unit, luminance of a monochrome signal which is included in the monochrome image data read by the first image reading unit and corresponds to the chromatic image region extracted by the extraction image generation unit. | 04-02-2009 |
20090116084 | IMAGE READING DEVICE AND IMAGE READING METHOD - A technology capable of preventing generation of a problem due to saturation of an output value in an image pick-up section caused by a variation of illumination light from a light source. An image reading device includes a plurality of light sources each of which illuminates a document surface as a target for reading with illuminating light of a color different from the other light sources, an image pick-up section for imaging light radiated from the plurality of the light sources and reflected on the document surface, a controlling unit for making the plurality of the light sources emit light with any one of the plurality of the light sources as a reference light source, and an adjusting unit for lowering a current value of a power source which makes the reference light source emit light when an amount of light imaged in the image pick-up section exceeds a threshold value as a predetermined upper limit value. | 05-07-2009 |
20090122370 | Image reading apparatus - In a color reading apparatus for successively reading respective red, green, and blue colors in each line while a document is continuously conveyed to a plurality of line sensor units arranged in a zigzag manner, the line sensor units are arranged with a distance equal to or shorter than a unit of line to prevent a color shift. When read data of the plurality of line sensor units in a conveying direction are to be combined, image data shifted by the number of lines corresponding to distances between the line sensor units in the conveying direction are set as first combination candidates. A color code and a line code are added to each of the data. Image data having the same color code and the same line code are combined. According to the image reading apparatus structured as described above, it is possible to obtain data capable of reproducing read data for each color on the same line without errors. | 05-14-2009 |
20090128868 | SCANNING DEVICE WITH MULTIPLE LED LIGHT SOURCES AND APPLICATION THEREOF - A scanning device with multiple LED light sources and an application thereof. The scanning device includes a housing, a chassis, a main LED light source and an auxiliary LED light source. A horizontal plane of the housing is connected to a sloped plane of the housing to form a connecting section. The main LED light source has a length extending in a longitudinal direction substantially perpendicular to a moving direction of the chassis. The main LED light source provides a main light ray to illuminate the horizontal plane, and includes a first circuit board mounted on the chassis and first LEDs mounted on the first circuit board. The auxiliary LED light source includes a second circuit board mounted on the chassis and a second LED mounted on the second circuit board. The second LED provides an auxiliary light ray to illuminate the connecting section. | 05-21-2009 |
20090207462 | IMAGE READING APPARATUS - An image reading apparatus includes: a light source emitting a plurality of colors; a light receiver including a plurality of pixels which receive lights of respective colors; an analog-to-digital converter which analog-to-digital converts analog signals obtained by the light receiver to obtain digital photoelectric conversion outputs, respectively; a color determining portion which receives output signals, determines whether output signals for respective colors from the same pixel are within predetermined ranges, respectively, and outputs, as dropout data, pixel position information of the pixel, the outputs signals from which are within the predetermined ranges, respectively; an image monochromating circuit which receives output signals and obtains monochrome data; a data substituting portion which receives the monochrome data, substitutes the monochrome data corresponding to the pixel position information from the color determining portion with a level at which the pixel is determined as a white level in a binarizing process. | 08-20-2009 |
20090251745 | IMAGE DATA LUMINANCE COMPENSATING METHOD AND SHEET-FEEDING SCANNING APPARATUS USING SUCH METHOD - The present invention relates to an image data luminance compensating method and a sheet-feeding scanning apparatus using such an image data luminance compensating method. According to the reference luminance value change of the reference background strip before and after the current document passes through the scan operating region, the luminance gain associated with compensation of the image data of the next document is determined. | 10-08-2009 |
20090296172 | IMAGE READING DEVICE HAVING LINE SENSOR PERFORMING PRE-SCAN BASED ON CONDITION SET FOR MAIN-SCAN - An image reading device includes a reading unit for reading a document. The reading unit includes red color green color and blue color light sources and a plurality of light receiving elements aligned in a main scanning direction. In a pre-scan performed precedent to a main-scan, the reading unit reads a part of the document with a lower reading resolution than the reading resolution in the main-scan in order to gather information about the document placed on a document reading table. An optimum light amount to be emanated from the light source at the time of main-scan is set while changing the light amount from the light source and checking the outputs from the light receiving elements. An optimum light amount to be emanated from the light source at the time of pre-scan is calculated based on the optimum light amount set for the main-scan. | 12-03-2009 |
20100033776 | BLACK CALIBRATION SYSTEM AND METHODS FOR DOCUMENT SCANNERS - A method and systems for calibrating a document scanner are provided. The scanner calibration method includes providing a geometrically operative black absorption device having a structural geometry that is capable of receiving light and limiting propagation of the received light, where the black calibration target has a total light reflectance of less than one percent. The method further includes powering on a light source of a document scanner to provide light toward the black absorption device, where the light source generates a noise signal when providing the light. The method further includes detecting, by a sensor of the document scanner, light reflected from the black absorption device and generating calibration signals based on the reflected light and the noise signal. | 02-11-2010 |
20100118358 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An optical filter is provided on photoelectric conversion elements for monochrome reading. Each of a reflecting optical system and the optical filter has an end portion and a central portion in a predetermined direction. The optical filter suppresses light at a peak wavelength of a light source such that a difference between a sensitivity of optical path via the end portion of the reflecting optical system and the optical filter and a sensitivity of optical path via the central portion of the reflecting optical system and the optical filter fall within a range of 5% at the peak wavelength of light source. | 05-13-2010 |
20100195171 | DOCUMENT READING APPARATUS - A document reading apparatus includes a white LED including an LED and a fluorescent material and configured to illuminate a document reading position with light, a reading unit having a color line sensor and a monochrome line sensor and configured to read an image of a document illuminated with the light emitted from the white LED, and a filter arranged on an optical path between the monochrome line sensor and the document, and wherein the filter is configured to suppress transmission of light at a peak wavelength of the LED so that, regarding an intensity of light to be received on the monochrome line sensor, the intensity of the light at the peak wavelength of the LED is smaller than the intensity of the light at the peak wavelength of the fluorescent material when the light emitted from the LED is received. | 08-05-2010 |
20100238526 | DIFFUSE SURFACE ON LENSLET ARRAY DIFFUSER - An illuminator system includes an illuminator array positioned adjacent to an image bearing surface, a light diffuser, and a linear sensor array. The light diffuser includes a plurality of rounded lenslets having convex or concave configuration positioned between the illuminator array and the image bearing surface. The rounded lenslets are positioned with respect to the illuminator array to receive the light beams emitted by the illuminator elements and to diffuse the light beams being transmitted to the image bearing surface in the linear direction of the illuminator array. Each of the rounded lenslets has a textured surface with a plurality of indentations. Each of the indentations is configured to randomly diffuse the light beams being transmitted to the image bearing surface. | 09-23-2010 |
20100245953 | IMAGE READING APPARATUS - An image reading apparatus includes: a sheet table including a placement surface on which a sheet is placed; a light emitting device including light sources; a light emitting unit including a plurality of light emitting devices for emitting light to the placement surface; a light receiving unit; a read image conversion unit converting the received light into read image information; a pulse signal output unit that outputs a pulse signal; a plurality of drive current supply units supplying drive currents to the plurality of light emitting devices; a light emission control unit; a first light emission parameter determination unit; and a second light emission parameter determination unit. The light emission control unit controls the light sources to emit the same color light in sequence based on a drive current value of a first and second light emitting devices and a light emission time of the light sources. | 09-30-2010 |
20100296141 | IMAGE READING APPARATUS - An image reading apparatus generates color image data from an image on a medium, based on R-color, G-color, and B-color data, and includes: an unit that irradiates light to the medium; an unit that includes R-color, B-color, and G-color imaging members, which each output the R-color, G-color, or B-color data respectively, based on received light from the medium; a light source that irradiates to the medium first light of a first visible wavelength range different from R-color; and a unit that generates fluorescent image data of a fluorescent region contained in the image, based on predetermined color data corresponding to second light of a second visible wavelength range different from the first visible wavelength range, the second light being generated by the fluorescent region when the light source is turned on and the fluorescent region receives the first light. | 11-25-2010 |
20100309533 | METHOD AND APPARATUS FOR CONTACT IMAGE SCANNING - A method and apparatus are disclosed for scanning documents using a contact image scanner. The imaging apparatus comprises a light source for illuminating the document, a plurality of pixel sensors for generating a signal in response to light incident thereon, a lens for focusing light from the light source reflected from the document onto the plurality of pixel sensors, a color matrix filter disposed between the pixel sensors and the light reflected from the document, and a circuit for processing the signal from the plurality of pixel sensors to generate the digital image of the document. The method comprises the steps of providing a plurality of pixel sensors for generating a signal in response to light incident thereon, projecting light from a light source onto the document in a sequential fashion along the length dimension thereof, reflecting the light projected onto the document onto the plurality of pixel sensors, filtering the light from the light source with a color matrix filter, and processing the signal from the plurality of pixel sensors to generate the digital image of the document. | 12-09-2010 |
20110026087 | CALIBRATING FIELD UNIFORMITY - Systems and methods systems and methods for calibrating field uniformity are disclosed. An exemplary method includes scanning the imaging area including a first media to obtain optical data for a specular reflectance map. The method also includes scanning the imaging area including a second media to obtain optical data for a diffuse reflective map. The method also includes storing the specular reflectance map and the diffuse reflective map for adjusting actual pixel values during an imaging operation | 02-03-2011 |
20110058237 | IMAGE READING APPARATUS - An image reading apparatus includes: a light source to illuminate an original; a color sensor and a monochrome sensor to receive light reflected from the original illuminated by the light source to output an image signal; an amplifier to amplify the image signal from the color and monochrome sensors; a reflective reference member; and a control circuit to adjust a gain of the amplifier amplifying the image signal from the color sensor that receives light reflected from the reflective member illuminated by the light source, and holds the adjusted gain as a gain setting value for the color sensor, and the control circuit obtains a gain setting value for the monochrome sensor by calculation based on the gain setting value for the color sensor. | 03-10-2011 |
20110080626 | IMAGE READING APPARATUS - An image reading apparatus which irradiates a document with light, and reads the document image based on the reflected light includes a light source which includes a plurality of LEDs, and irradiates the document with light, an LED current adjusting unit which sets the amount of current to be supplied to each LED by changing the current amounts from the end portion to the central portion in the main scanning direction of document reading, and a driving circuit which drives the LEDs by the current amounts set by the LED current adjusting unit in correspondence with the LEDs. | 04-07-2011 |
20110122465 | SYSTEM FOR ILLUMINATING AN ORIGINAL USING ADDITIONAL COLORS AND CAPTURING AN IMAGE THEREOF - An imaging device including a base and an enclosed chamber positioned on the base. The enclosed chamber has a scanning surface inclined with respect to the base, a reflecting member positioned opposite to the scanning surface and an imaging member adjacent the scanning surface and oriented towards the reflecting member. The imaging member is illuminated with a red, a green, a blue, and an additional color LED. In one embodiment the additional color is a color other than red, green, and blue. In an alternate embodiment the additional color is Ultraviolet (UV) or Infra-Red (IR). | 05-26-2011 |
20110149358 | CONTACT-TYPE IMAGE SCANNER AND SCAN CONTROLLING METHOD THEREOF - A contact-type image scanner includes an illumination unit, a control unit and a photo-sensing unit. The illumination unit includes a first, a second and a third light source for respectively emitting different color light beams on an original surface. The control unit is in communication with the illumination unit for controlling on durations of the light sources. In response to a first start pulse and a second start pulse, the first light source and the second light source are turned on for a first on duration and a second on duration respectively, wherein the second light source is turned on immediately after the first light source is turned off or after the first light source is turned off for a delaying time. In response to a third start pulse, the first, second and third light sources are simultaneously turned on for a first minor on duration, a second minor on duration and a third minor on duration, respectively. The photo-sensing unit obtains a first image data value during the first on duration, obtains a second image data value during a second on duration and obtains a third image data during the first, second and third minor on durations. | 06-23-2011 |
20110170152 | MEASURING METHOD, OPTICAL SCANNING DEVICE, AND IMAGE FORMING APPARATUS - A method for measuring a deviation in timing of start of writing in scanning lines is implemented by an optical scanning device that scans a surface to be scanned with light beams from light-emitting elements having first and second light-emitting elements which are arranged so as to be displaced from each other in a direction corresponding to a direction of the scanning lines. The method includes: detecting timing at which light from the first light-emitting element is received by a light receiving element, as a first time, the light receiving element outputting a synchronization detecting signal before start of writing; detecting timing at which light from the second light-emitting element is received by the light receiving element, as a second time; and obtaining the deviation in timing for the second light-emitting element with respect to the first light-emitting element based on a difference between the first and second time. | 07-14-2011 |
20120002253 | IMAGE FORMING APPARATUS AND LIGHT AMOUNT ADJUSTING METHOD - According to one embodiment, an image forming apparatus includes: a light source unit including light emitting elements for red, green, and blue; an image pickup section configured to receive, from a reference board on which light from the light source unit is irradiated, reflected light to pick up an image of the reference board; and a control section configured to control the light emitting elements of the light source unit to separately emit light, acquire separate data picked up by the image pickup section, select data having a smallest luminance value among the separate data, and control light amounts of all the light emitting elements of the light source unit with the selected data set as a reference. | 01-05-2012 |
20120008180 | ORIGINAL READING APPARATUS READING IMAGE FROM ORIGINAL - A plurality of line sensors corresponding to a plualrity of color components receive reflected light passed through an imaging unit and convert the light into a plurality of color component data. A correcting unit performs color misalignment correction based on a reference color component for which resolution performance is lowest among the plurality of color component, on the color component data corresponding to other color components. | 01-12-2012 |
20120133999 | METHOD OF READING IMAGE AND THE IMAGE READING DEVICE - A method and device of reading images includes a light source emitting at least three difference color lights. The light source emits color lights to an object in a predetermined order and frequency. The object reflects the color lights to three monochromatic sensor rows through a lens row to directly image the color light on the sensor rows. The light source changes the color light emitting to the object when the light source, the sensor rows and the lens row are moved for a predetermined, usually is a width of a pixel, to combine a color image without chromatic aberration. | 05-31-2012 |
20120250118 | Enhanced Scanner Design - Improved scanner designs are provided to improve imaging and reduce errors during the scanning process. Embodiments disclosed include, for example, the use of dual cameras to improve imagery and reduce the scanner enclosure size, synchronized lighting techniques during the scanning sequence, shielded lens for the camera scanner, a scanner enclosed on at least three sides, adjustments to scanner lighting based on the levels of ambient lighting, a combined branding and scanner apparatus, a gimbaled scanner mount, and a tilted platen with stop for document alignment. | 10-04-2012 |
20130100508 | IMAGE SENSOR UNIT AND IMAGE READING APPARATUS - An image sensor unit has a first light guide that emits light to a bill, a second light guide that emits light to the bill, a rod-lens array that receives the light emitted by the first light guide and reflected by the bill and the light emitted by the second light guide and transmitted through the bill, and a background member that provides a background color for the bill. The bill can pass through the gap between the rod-lens array and the background member and second light guide. The background member is disposed on the optical axis of the rod-lens array to face the rod-lens array. The second light guide is disposed at a position shifted from the optical axis of the rod-lens array in the conveyance direction of the bill. | 04-25-2013 |
20130215482 | DOCUMENT ILLUMINATING SYSTEM AND IMAGE READER INCLUDING THE SAME - A document illuminating system includes a plurality of light emitting elements arranged in an array, a reflective element which guides light emitted from the light emitting elements to a document read area of a certain width and length. The reflective element includes first to third reflective portions. The second reflective portion includes one or more planar reflective faces and is disposed so that the reflective faces reflect light from the light emitting elements to one or both of the first and third reflective portions without other reflective elements. The first and third reflective portions each include one or more planar reflective faces and are disposed so that their reflective faces oppositely illuminate the document read area together by reflecting light from one or both of the light emitting elements and the second reflective portion to the document read area without other reflective elements. | 08-22-2013 |
20130242362 | IMAGE-FORMING LENS, IMAGE READER, AND IMAGE-FORMING DEVICE - An image-forming lens includes, in order from an object side to an image side, a first group having a negative power as a whole, the first group consisting of a positive meniscus lens having a convex surface on the object side and a negative meniscus lens having a convex surface on the object side, the positive meniscus lens and the negative meniscus lens being cemented, an aperture stop, a second group consisting of a positive meniscus lens having a convex surface on the image side, a third group consisting of a positive meniscus lens having a convex surface on the image side, a fourth group consisting of a lens having a negative power, and a fifth group consisting of a biconcave lens. | 09-19-2013 |
20130265621 | SCANNING DEVICE, APPARATUS AND METHOD FOR IMAGE PROCESSING - A scanning device includes a first scanning unit, a second scanning unit, and a light source corresponding to each of the first scanning unit and the second scanning unit. The light sources are arranged on the same side of the first and second scanning units with respect to the main scanning direction. | 10-10-2013 |
20130278979 | IMAGE READING APPARATUS - An image reading apparatus includes: a light source to illuminate an original; a color sensor and a monochrome sensor to receive light reflected from the original illuminated by the light source to output an image signal; an amplifier to amplify the image signal from the color and monochrome sensors; a reflective reference member; and a control circuit to adjust a gain of the amplifier amplifying the image signal from the color sensor that receives light reflected from the reflective member illuminated by the light source, and holds the adjusted gain as a gain setting value for the color sensor, and the control circuit obtains a gain setting value for the monochrome sensor by calculation based on the gain setting value for the color sensor. | 10-24-2013 |
20140104663 | METHOD AND APPARATUS FOR DOCUMENT DIGITIZATION - In a method for document digitization, an apparatus generates a first image of a document sheet by irradiating the document sheet using a first light source and detecting the document sheet irradiated with light from the first light source, which enables detection of ink on the document sheet that defines a marked portion. The apparatus further generates a second image of the document sheet by irradiating the document sheet using a second light source and detecting the document sheet irradiated with light from the second light source, which enables detection of content on the document sheet. The apparatus further obtains a region of the second image that corresponds to the marked portion of the document sheet based on the first image. | 04-17-2014 |
20140300940 | IMAGE READING DEVICE AND METHOD OF READING IMAGES - An image reading device for reading an image of an object includes a multi-color light source which projects light rays with at least three colors onto the object, at least three monochrome image sensor rows, and at least a lens row provided between the object and the monochrome image sensor rows; wherein reflected light rays are imaged directly onto the monochrome image sensor row through the lens row. The image reading device is able to read color and monochrome images. | 10-09-2014 |
20150116797 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD - An image reading device includes a light source, a photoelectric conversion portion, a first radiation control portion, and a first image generating portion. The light source radiates lights of R (red), G (green), and B (blue). The photoelectric conversion portion receives light reflected from a document and outputs an electric signal corresponding to a light reception amount. The first radiation control portion sequentially radiates two color lights of G and R or B from the light source to each line along a main scanning direction on the document while alternately switching the lights of R and B on a line-by-line basis. The first image generating portion generates color image data for one line, based on at least three electric signals corresponding to lights of R, G, and B among the electric signals corresponding to respective color lights radiated to at least adjacent two lines by the first radiation control portion. | 04-30-2015 |
20150124300 | CAPTURING A SCAN LINE WITH TWO COLORS - A scanner is disclosed. The scanner has three lights with three different colors. The scanner uses only two of the three lights when capturing each scan line. The scanner does this by alternating the use of two of the three colors every other scan line. | 05-07-2015 |
20150341520 | IMAGE READING APPARATUS, IMAGE READING METHOD, AND MEDIUM - An object of the present invention is to prevent a deterioration in image quality of an acquired image resulting from the shape of an object. The present invention is an image reading apparatus that irradiates an object placed on a read table with light by using an irradiation unit, captures an image of the object by using an image capturing unit, and reads an image of the object, and the image reading apparatus includes: a measurement unit configured to measure a shape of the object; and a correction unit configured to correct an amount of light with which the irradiation unit irradiates the object based on image data of the object acquired by performing the image capturing while the irradiation unit is irradiating the object with light, and on the results of the measurement. | 11-26-2015 |
20150358496 | SCANNER - A scanner is disclosed. The scanner captures three exposures for each color scan line. The scanner has a first, second and third light source that each produces a different color of light. The scanner uses the first and second light source for the first exposure. The scanner uses the first and third source for the second exposure. The scanner uses the second and third light source for the third exposure. | 12-10-2015 |
20160014302 | IMAGE-READING DEVICE THAT ELIMINATES SHOW-THROUGH FROM ORIGINAL | 01-14-2016 |
20160080611 | IMAGING DEVICE, MEDIUM TYPE DETERMINING DEVICE, AND IMAGE FORMING APPARATUS - An imaging device comprises: a light source; a two-dimensional image sensor that receives reflected light from a subject containing specular light of the light source and outputs an image of the subject; a light transmission member disposed in an optical path of light emitted from the light source to the subject; and a light shielding unit that, when a position on the subject at which light from the light source is regularly reflected and enters the two-dimensional image sensor is defined as a first specular position, whereas a position on the light transmission member at which light from the light source is regularly reflected and enters the two-dimensional image sensor is defined as a second specular position, shields the light directed from the light source toward the second specular position without shielding the light directed from the light source toward the first specular position. | 03-17-2016 |
20160134775 | LIGHT IRRADIATOR, IMAGE READER AND IMAGE FORMING APPARATUS - A light irradiator includes a light source and a light guide to guide a light flux from the light source to an illumination area. The light guide has an incident surface, an emission surface and two side surfaces. The emission surface is located apart from a reading optical axis with an inclination relative to the reading optical axis. The following relations are satisfied: | 05-12-2016 |
20160156857 | Method and apparatus for image capture through a display screen | 06-02-2016 |
358510000 | Coherent light | 4 |
20090009832 | Scan-type image display device - A scan-type image display device which displays an image by scan of laser beam emitted from a light source in one direction and another direction of a light receiving surface includes: a first scan unit which performs scan of the laser beam in the one direction by deflecting the laser beam; a second scan unit which performs scan of the laser beam in the another direction by deflecting the laser beam; and a scan control unit which equalizes the scan width of the laser beam scan in the one direction by using the first scan unit performed at each position in the another direction within the light receiving surface. | 01-08-2009 |
20100214633 | SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNING DEVICE, AND IMAGE FORMING DEVICE - A surface-emitting laser array includes a plurality of light emitting parts arranged in a two-dimensional formation having two orthogonal directions. When the plurality of light emitting parts are orthogonally projected on a virtual line parallel to one of the two orthogonal directions, a spacing between two of the plurality of light emitting parts along the virtual line is equal to an integral multiple of a predetermined value. The plurality of light emitting parts include a first light emitting part, a second light emitting part adjacent to the first light emitting part, and a third light emitting part adjacent to the second light emitting part, and a spacing between the first and second light emitting parts differs from a spacing between the second and third light emitting parts. | 08-26-2010 |
20110199657 | LASER DRIVING DEVICE, OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND LASER DRIVING METHOD - A laser driving device that drives a semiconductor laser based on a light-emitting signal includes an expansion circuit that expands a pulse width of the light-emitting signal based on a known difference between the pulse width of the light-emitting signal and a lighting pulse width of the semiconductor laser when the semiconductor laser emits light according to the light-emitting signal, and a driver that outputs a driving signal to the semiconductor laser according to an output signal of the expansion circuit. | 08-18-2011 |
20130100509 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - An optical scanning apparatus, including: light sources; a deflector configured to deflect beams emitted from the light sources; and imaging optical systems configured to focus the beams deflected by a deflecting surface of the deflector on surfaces to be scanned, respectively, wherein: the beams entering the deflecting surface are P-polarized beam; the optical scanning apparatus further includes at least one reflection optical element reflecting a beam in a sub-scanning cross section on each of optical paths from the deflecting surface to the surfaces to be scanned; the optical paths include first and second optical paths having different numbers of the reflection optical elements from each other; and the optical scanning apparatus further includes an adjustor configured to adjust an output of a light source corresponding to at least one of the first and the second optical paths from among the light sources so that predetermined conditions are satisfied. | 04-25-2013 |