Patent application number | Description | Published |
20100008686 | METHOD OF DETECTING POSITION OF TONER PATTERN, OPTICAL SENSOR, AND IMAGE FORMING APPARATUS - A light-emitting unit includes M (M≧3) number of light-emitting elements. A light-receiving unit includes N (N≧3) number of light-receiving elements that receive a reflected light from at least one of a supporting member and a toner pattern. The toner pattern is formed on a surface of the supporting member. A detection light is emitted onto the supporting member from the light-emitting unit. A reflected light reflected from at least one of the supporting member and the toner pattern is received by the light-receiving unit. A position of the toner pattern on the supporting member is detected based on outputs of the light-receiving elements. | 01-14-2010 |
20110043810 | REFLECTIVE OPTICAL SENSOR AND IMAGE FORMING APPARATUS - A reflective optical sensor detects a position and/or a toner density of the toner pattern. The reflective optical sensor includes an illuminating system that has at least three light-emitting units, a light-receiving system that has at least three light-receiving units and receives light output from the illuminating system and reflected by the toner pattern, and an illuminating optical system that includes at least three illuminating condenser lenses individually corresponding to the at least three light-emitting units and that guides the light output from the illuminating system to the toner pattern. The at least three light-emitting units and the at least three light-receiving units are both arranged in equal distance with respect to one direction. Optical axes of the at least three illuminating condenser lenses are off-center in parallel to an axis passing through a center of and perpendicular to the corresponding light-emitting unit. | 02-24-2011 |
20110134500 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a coupling optical system, a light source including a plurality of light emitting units for emitting light beams, and a deflector including a deflecting surface for deflecting the light beams. The coupling optical system is arranged on an optical path between the light source and the deflector so that the light beams enter the deflector at an angle with respect to a normal direction of the deflecting surface in a sub-scanning direction. The light emitting units are arranged two-dimensionally, and a distance between two light emitting units at opposite ends in a main scanning direction is smaller than a distance between two light emitting units at opposite ends in the sub-scanning direction. | 06-09-2011 |
20110228368 | OPTICAL SCANNING DEVICE, OPTICAL WRITING DEVICE, AND IMAGE FORMING APPARATUS - An optical scanning device includes a first optical system for guiding light beams emitted from a plurality of light emitting units to an optical deflector, and a second optical system for focusing the light beams to optically scan a surface to be scanned. At least one of the first optical system and the second optical system includes a resin lens having a diffractive surface. The diffractive surface includes a diffractive portion and a refractive portion. A power of the diffractive portion and a power of the refractive portion cancel each other. | 09-22-2011 |
20140044460 | MOVING-MEMBER DETECTING DEVICE AND IMAGE FORMING APPARATUS - A moving-member detecting device includes an image acquiring unit and a speed calculating unit. The image acquiring unit includes a light source configured to emit a light beam to a detecting position of a moving member; an area sensor configured to acquire image data of a one- or two-dimensional image; and an area-sensor control unit configured to acquire the image data. The image acquiring unit is configured to acquire pieces of image data of the moving member at first and second positions, respectively, in a moving direction of the moving member so as to acquire the piece of position image data for the second position when the moving member is at the second position after acquiring the piece of image data for the first position. The speed calculating unit is configured to calculate a moving speed of the moving member from the pieces of image data. | 02-13-2014 |
20150092994 | ELIGIBLE OPERATOR DETERMINATION DEVICE AND ELIGIBLE OPERATOR DETERMINATION METHOD - An eligible operator determination device includes a three-dimensional light measurement unit configured to measure three-dimensional coordinates of respective parts in a visual field including a posture of a monitor target operating a device; a motion recognition unit configured to recognize a predetermined ineligible motion from a measurement result obtained by the three-dimensional light measurement unit; and an ineligibility coping unit configured to execute a predetermined process according to the predetermined ineligible motion, when the predetermined ineligible motion is recognized by the motion recognition unit. | 04-02-2015 |
20150301690 | INPUT-OPERATION DETECTION DEVICE, IMAGE DISPLAY APPARATUS, PROJECTOR APPARATUS AND PROJECTOR SYSTEM - According to an aspect of the present invention, an input-operation detection device for detecting a user input operation performed on at least a portion of a displayed image includes; a light emitter that emits detection light, an imaging unit including an imaging optical system and an image sensor and configured to capture an image of at least one of the displayed image and the input operation, and a processing unit that detects position, at which the input operation is performed, or motion, by which the input operation is provided, based on a result of image capture output from the imaging unit. The position where optical axis of the imaging optical system intersects a display surface of the displayed image and center of the displayed image are on the same side relative to a position where the imaging unit is mounted. | 10-22-2015 |
20150302191 | PROGRAM EXECUTION APPARATUS AND PROGRAM ANALYSIS APPARATUS - Execute a countermeasure process for vulnerability reliably before an attack aiming at vulnerability occurs. A vulnerability countermeasure processing unit performs a countermeasure process for vulnerability of a vulnerable library function being a general-purpose library function that has vulnerability among the general-purpose library functions included in a general-purpose library. A countermeasure selection unit, when a call for the vulnerable library function is requested at execution of a Web application, makes the vulnerability countermeasure processing unit perform the countermeasure process for the vulnerability of the vulnerable library function, and after the countermeasure process is performed by the vulnerability countermeasure processing unit, calls the vulnerable library function. | 10-22-2015 |