Abstract:
An image reading apparatus for reading a document has an image sensor unit, which is moved along a platen glass (107,109) in a sub-scanning direction, mounting a LED, a light guide and a sensor. A white reference panel (132) for use of shading correction is provided on the platen glass on the side thereof opposite to the image sensor unit. Light shield plates (131) are provided on the platen glass on the side facing the image sensor unit along both sides of the white reference panel.
Abstract:
A system and method are disclosed which provide a look-down digital imaging device 300 capable of scanning a calibration area 314 included within such look-down digital imaging device to capture image data for the calibration area and calibrate itself based on analysis of such captured image data. More specifically, a preferred embodiment includes a calibration area that is integrated internally within the look-down digital imaging device. When performing calibration in such a preferred embodiment, the scan head 304 of the look-down digital imaging device is operable to align itself with the calibration area to allow for a scan of the calibration area (i.e., the capture of digital image data of the calibration area). In one embodiment, a look-down digital imaging device does not achieve a focused scan of the calibration area, but is capable of utilizing captured unfocused digital imaging data for calibration. In a preferred embodiment, a look-down digital imaging device achieves a focused scan of the calibration area, thereby enabling a further accurate calibration. More specifically, a preferred embodiment folds the optical path of the reflected light 322 A from the calibration area in order to have the optical path of such calibration area accurately mimic the optical path of an original to be scanned, thereby allowing for focused calibration to be achieved.
Abstract:
The invention relates to a joining construction for mounting the CCD cells of a color line camera on a color splitting prism (30) attached to a prism housing (2). Each CCD cell (6, 7, 8) is attached, by a first glue joint (13), to its fastening element (9), the length (L2) whereof is essentially larger than the length (L1) of the CCD cell, and which fastening element (9) extends from the housing margin (12a) located on one side of said exit surface (20a, 20b, 20c) of the color splitting prism to the other housing margin (12b) located on the opposite side thereof. Each fastening element (9) is attached to said margins by third glue joints (11).
Abstract:
According to one embodiment of the invention, a digital imaging device (100) is described having filters (110, 120) to capture colorimetric information of visual light at a first and a second set of wavelengths. The captured colorimetric information is processed to reproduce a surface reflectance of an object in a scene (160).
Abstract:
According to one embodiment of the invention, a digital imaging device is described having filters to capture colorimetric information of visual light at a first and a second set of wavelengths. The captured colorimetric information is processed to reproduce a surface reflectance of an object in a scene.
Abstract:
A display apparatus includes a display panel 110 including a light emitting device 120 for each of a plurality of pixels, and a light receiving device 130 provided on the display panel 110 for each of the plurality of pixels. The display panel 110 displays an image by using light output from the light emitting device 120 toward the panel front side. The light receiving device 130 receives a portion of light output from the light emitting device 120 toward the panel back side that is reflected by an irradiated object 10 located on the panel back side. Since the light used for displaying an image and the light used for reading an image are commonly output from the light emitting device 120, it is possible to display and read image information with a simple, thin and light-weight structure.
Abstract:
PROBLEM TO BE SOLVED: To suitably remove stray light, and further, to reduce variation in the distribution of the amount of light in the main scanning direction. SOLUTION: An erecting equal-magnification lens array plate 10 includes a stack of a plurality of lens array plates built such that pairs of corresponding lenses form a coaxial lens system, where each lens array plate is formed with a plurality of convex lenses 18 on both surfaces of the plate. The plate receives light from a substantially straight light source facing one side of the plate, and the plate forms an erecting equal-magnification image of the substantially straight light source on an image plane facing the other side of the plate. The main lens arrangement direction differs from the main scanning direction of the erecting equal-magnification lens array plate. The erecting equal-magnification lens array plate is provided with a first light shielding member operative to shield light not contributing to imaging and formed in the neighborhood of a position in the intermediate plane in the erecting equal-magnification lens array plate 10 where an inverted image of the substantially straight light source is formed, and with a second light shielding member 17 operative to reduce the amount of light incident on at least some of the lenses at the periphery in the sub-scanning direction and provided on a lens surface facing a light source. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
개시된 본 발명에 의한 화상독취센서유닛 이송 가이드장치는, 화상독취센서유닛에 장착된 가이드홀더 및 스캐닝장치 본체에 설치된 가이드레일을 포함한다. 가이드홀더 및 가이드레일은 미끄럼 접촉되며, 가이드홀더 및 가이드레일이 접촉되는 미끄럼 접촉면은 평면이다. 이에 의하면, 가이드장치의 가이드레일 및 가이드홀더가 점접촉 또는 선접촉되기 때문에, 부재들 간의 마찰 저항이 작다. 스캐닝장치, 화상독취센서유닛, 가이드레일, 가이드홀더, 점접촉, 선접촉
Abstract:
A lighting device includes a light source that illuminates an object of illumination, a reflecting member provided opposite the light source so as to direct a first part of illuminating light emitted therefrom to the object of illumination, and a light-blocking member provided between the light source and the object of illumination and between the reflecting member and the object of illumination. The light-blocking member blocks the first directed part of the illuminating light and a second part of the illuminating light directly illuminating the object of illumination with a certain ratio of a light-blocking rate for the first directed part of the illuminating light to a light-blocking rate for the second directly illuminating part of the illuminating light.