Patent application number | Description | Published |
20090086217 | SHEET THICKNESS MEASURING DEVICE AND IMAGE FORMING APPARATUS - A sheet thickness measuring device includes: an illumination unit that outputs a light that is illuminated into a stack of sheets from a first area defined on one of faces including a top face, a bottom face, and side faces of the stack of sheets; a detection unit that detects a light amount distribution of light entered into the stack of sheets and propagated to a second area through the stack of sheets, the second area defined on one of the side faces of the stack of sheets; and a calculation unit that calculates a thickness of a sheet in the stack of sheets based on the light amount distribution detected by the detection unit. | 04-02-2009 |
20100247085 | AUTOMATIC FOCUS ADJUSTING MECHANISM AND OPTICAL IMAGE ACQUISITION APPARATUS - In an automatic focus adjusting mechanism, a test sample having a patterned surface is mounted on a mount table, and an light beam passing through a slit formed in a field stop is applied to the patterned surface of the test sample. The light beam reflected from the test sample is split into two segment light beams. Focus adjusting aperture stops having respective apertures formed rhomboid are provided across the optical paths of the segment light beams. The amounts of the segment light beams passing through the rhomboid apertures are detected by light receiving units. Based on the difference between the detected light amounts, the position of the mount table is controlled by the focus adjusting unit. | 09-30-2010 |
20120027483 | APPARATUS AND METHOD OF DETERMINING THE TYPE OF PAPER SHEET, AND IMAGE FORMATION APPARATUS - According to one embodiment, a sheet type determination apparatus includes a tray, light source, detection unit, database, and operation unit. The tray is configured to hold a sheet bundle formed by stacked sheets. The light source emits illumination light to a first region. The detection unit detects a light intensity distribution of transmitted light emerging from a second region. The transmitted light is generated as the illumination light passes through the sheet bundle, and the second region is different from the first region. The database stores a table describing a relation between reference attenuation rates and types. The operation unit is configured to calculate an attenuation rate of the transmitted light based on the light intensity distribution, and determine a type of the sheets by comparing the attenuation rate with the reference attenuation rates. | 02-02-2012 |
20120113682 | SURFACE LIGHTING APPARATUS - According to one embodiment, a surface lighting apparatus includes surface light source units stacked, and a control unit. Each surface light source unit includes a light guide plate and light-emitting units. The light guide plate includes a light incident surface for introducing light emitted by the light-emitting units, and a light-outputting region configured to output light through a front surface. The front surface is provided with a light transmission control part to prevent light from diffusing in a direction of arranging the light-emitting units. The light-emitting units are linearly arranged opposite to the light incident surface. The control unit controls a light intensity for each of the light-emitting units. A light guide plate of each surface light source unit other than a lowermost surface light source unit further includes a window region configured to transmit light output from one or more lower surface light source units. | 05-10-2012 |
20120120087 | Liquid Crystal Display and Backlight Module - According to one embodiment, a liquid crystal display includes a display module and a backlight module configured to irradiate light on the display module. The backlight module includes a light guide plate, a first light source, a reflective plate, and a second light source. The light guide plate has a light output face at a position corresponding to a first small area on the display module. The first light source is configured to irradiate light toward the light guide plate from a side of the light guide plate in such a manner that the irradiated light reaches the first small area. The reflective plate is facing to the light guide plate, and the reflective plate has a reflective face configured to reflect light toward a second small area different from the first small area. The second light source is configured to irradiate light toward the reflective plate from a side of the reflective plate in such a manner that the irradiated light reaches the second small area. | 05-17-2012 |
20120218611 | ILLUMINATION APPARATUS AND IMAGE READING APPARATUS INCLUDING THE SAME - According to one embodiment, illumination apparatus including, first light source module which includes light-emitting module that emits light, light-emitting module having line shape, and first reflection member which includes first reflection surface that reflects light emitted from light-emitting module of first light source module for predetermined range, wherein first reflection surface has cross section that has zigzag line shape including plurality of line segments running along standard oval, which has major axis that forms predetermined angle with direction perpendicular to predetermined range, in direction perpendicular to longitudinal direction of light-emitting module of first light source module. | 08-30-2012 |
20130114293 | SURFACE LIGHT SOURCE DEVICE - According to one embodiment, a surface light source device includes a light guide plate, and first and second light-emitting units. The light guide plate includes a flat portion and a curved portion. The curved portion guides, to the flat portion, light introduced from the end surface and transmits light introduced from the inner circumferential surface. The flat portion includes a light diffusing portion to diffuse the light guided by the curved portion, and a light-emitting surface to output the light diffused by the light diffusing portion. The first light-emitting unit emits light toward the end surface. The second light-emitting unit emits light toward the inner circumferential surface. | 05-09-2013 |
20130221196 | IMAGE SENSOR AND MANUFACTURING METHOD THEREOF - According to one embodiment, an image sensor includes an image-sensing element region formed by arranging a plurality of image-sensing elements on a semiconductor substrate and element isolation portions formed to isolate the image-sensing elements, and a logic circuit region formed in a region different from the image-sensing element region on the substrate and including a plurality of gate patterns. Further, dummy element isolation portions are arranged with a constant pitch in the boundary region between the image-sensing element region and the logic circuit region. | 08-29-2013 |
20130221474 | IMAGE SENSOR AND MANUFACTURING METHOD THEREOF - According to one embodiment, an image sensor includes an image-sensing element region formed by arranging a plurality of image-sensing elements on a semiconductor substrate, and a logic circuit region formed in a region different from the image-sensing element region on the substrate and including a plurality of gate patterns. Further, dummy gate patterns are formed with a constant pitch on the image-sensing element region. | 08-29-2013 |
20140073065 | MICROWAVE ANNEALING APPARATUS AND METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE - According to one embodiment, a microwave annealing apparatus is provided, including a housing shielding electromagnetic waves, a first electromagnetic wave source configured to apply a first electromagnetic wave into the housing, a second electromagnetic wave source configured to apply, into the housing, a second electromagnetic wave having a higher frequency than the first electromagnetic wave, a susceptor configured to hold a semiconductor substrate, made of a material transparent to the first electromagnetic wave and provided in the housing, a temperature measuring device configured to measure the temperature of the semiconductor substrate, and a control unit configured to control the power of each of the first and second electromagnetic wave sources in accordance with the temperature measured by the temperature measuring device. | 03-13-2014 |
20140126237 | SURFACE LIGHT SOURCE DEVICE - According to one embodiment, a surface light source device includes following elements. The light guide plate includes a flat portion and a curved portion. The light guide plate further includes an end surface to introduce light which is located on a side of the curved portion, a light diffusing portion to diffuse the light introduced from the end surface, and a light-emitting surface to output the light diffused by the light diffusing portion. The light-emitting unit is to generate the light toward the end surface. The housing is to house the light guide plate and the light-emitting unit. The fixing portion is to fix the light guide plate to the housing, the fixing portion being arranged in contact with the curved portion. | 05-08-2014 |