Abstract: An apparatus has a photodetector with a plurality of pixels arranged in at least one dimension. The apparatus is designed to optically pick up an image of an information code by the pixels of the photodetector. In the apparatus, an establishing unit establishes a preliminary correcting region on part of the image data. A preliminary correcting unit provides a correcting variable that estimates a shift amount of the image data; and preliminarily corrects the part of the image data within the preliminary correcting region based on a value of the correcting variable. A determining unit determines whether the preliminary correction of the preliminary correcting unit is proper based on the corrected result. When the determining unit determines that the preliminary correction of the preliminary correcting unit is proper, a correcting unit corrects the image data based on the value of the correcting variable.

Abstract: In a laser radar apparatus, a laser beam generator that generates a laser beam and an optical detector that detects reflected light that has been reflected by an object in a field to be observed. A deflection performing means, provided with one or more deflection means each rotatable on a given central axis thereof, for enabling the deflection means to deflect the laser beam to the field and to deflect the reflected light toward the optical detector. A drive means driven to rotate the deflection means. A direction changing means changes a direction of the laser beam from the deflection means is changed in a direction of the central axis. A control means controls an operation of the direction changing means.

Abstract: In an optical information reader for optically reading a target based on a light reflected from the target, a translucent optical member is located on an optical axis of an imaging lens and is rotatable around a rotation axis. The rotation axis is substantially orthogonal to the optical axis. The translucent optical member is fixable at least first and second predetermined positions. When the translucent optical member is fixed at the first predetermined position, the translucent optical member has a first thickness through which the optical axis is penetrated, and when the translucent optical member is temporally fixed at the second predetermined position, the translucent optical member has a second thickness through which the optical axis is penetrated. The first thickness and second thickness are different from each other.

Abstract: An information reader has blocks of bright field illuminating units illuminating an information code directly marked on an object with first lights to regularly reflect the lights on the code, blocks of dark field illuminating units illuminating the code with second lights to irregularly reflect the lights on the code, an optical system, and a control section lighting the blocks of bright and dark field illuminating units by turns or simultaneously. The optical system forms an image of the code from each of the first and second lights or a combination of the first and second lights reflected on the code and reads the code from the images. The first lights are transmitted along an optical axis of the optical system. The second lights are transmitted toward the optical axis while slightly shifted toward the code.

Abstract: An optical information reading apparatus for reading information codes such as a bar code and a two-dimensional code includes, an image-forming lens fixed at a given point and imaging a reflection light from the information code, an optical sensor locating at a position relative to that of the image-forming lens and receiving an image formed by the image-forming lens, a light path bending unit bending the reflection light between the image-forming lens and the optical sensor a plurality of times, a shifter shifting the light path bending unit, a distance measurement unit measuring the distance from the information code to the reading apparatus and a controller controlling the shifter based on the measurement result of the distance measurement unit. The light path length between the image-forming lens and the optical sensor is changed by shifting the light path bending unit using the shifter.

Abstract: In an apparatus for optically reading a target based on light reflected from the target, an imaging lens with a first optical axis is provided so that the reflected light enters into the imaging lens. A photodetector having an active area and a second optical axis different from the first optical axis is provided. The imaging lens focuses the reflected light on the active area of the photodetector. A fold mechanism is arranged between the imaging lens and the photodetector. The fold mechanism folds an optical path of the reflected light between the imaging lens and the photodetector to adjust a length of the optical path while keeping each of the first and second optical axes constant.

Abstract: In an apparatus for optically reading a target based on a light reflected from the target, a light source has a first optical axis and operates to emit light. An imaging optical system has a second optical axis. The imaging optical system is arranged so that the reflected light enters into the imaging optical system. A photodetector has an active area so that the imaging optical system focuses the reflected light on the active area of the photodetector. A light guide member is arranged between the target and the imaging optical system on the first and second optical axes, respectively. The light guide member is configured to guide the light emitted from the light source while preventing the guided light from leaking therefrom to irradiate the guided light to the target.

Abstract: An information code reading apparatus comprises a case, an illuminating light source, and a light receiver. The case has an end portion at which a reading opening is formed. The illuminating light source is disposed within the case and configured to radiate illumination light through the reading opening toward an information code recorded on an object to be read. The light receiver is disposed within the case and configured to receive light reflected from the object through the reading opening. The reflected light returns along a reading light axis residing in a field of view of the light receiver. The reading light axis is oblique to a perpendicular axis to the reading opening, whereby the entire reading opening is illuminated by the light source. The illuminating light source is composed of an area light source disposed outside the field of view in a substantially parallel attitude along the field of view.

Abstract: An apparatus has a photodetector with a plurality of pixels arranged in at least one dimension. The apparatus is designed to optically pick up an image of an information code by the pixels of the photodetector. In the apparatus, an establishing unit establishes a preliminary correcting region on part of the image data. A preliminary correcting unit provides a correcting variable that estimates a shift amount of the image data; and preliminarily corrects the part of the image data within the preliminary correcting region based on a value of the correcting variable. A determining unit determines whether the preliminary correction of the preliminary correcting unit is proper based on the corrected result. When the determining unit determines that the preliminary correction of the preliminary correcting unit is proper, a correcting unit corrects the image data based on the value of the correcting variable.

Abstract: In an apparatus for optically reading out through an imaging optics a first image of information by a photodetector. The information is attached to a target. In the apparatus, a marker beam irradiating unit irradiates on a target a marker beam for indicating a field of view of the photodetector on the target. A first pickup unit causes the photodetector to pick up through the imaging optics a second image of the target based on the field of view while the marker beam is being irradiated on the target by the marker beam irradiating device. A position detecting unit detects a position of the marker beam being irradiated on the target with respect to the field of view based on the picked-up second image. A distance determining unit determines a distance between the apparatus and the target based on the detected position of the marker beam.

Abstract: In an apparatus for optically reading a target based on a light reflected from the target, a light source has a first optical axis and operates to emit light. An imaging optical system has a second optical axis. The imaging optical system is arranged so that the reflected light enters into the imaging optical system. A photodetector has an active area so that the imaging optical system focuses the reflected light on the active area of the photodetector. A light guide member is arranged between the target and the imaging optical system on the first and second optical axes, respectively. The light guide member is configured to guide the light emitted from the light source while preventing the guided light from leaking therefrom to irradiate the guided light to the target.

Abstract: In an apparatus for optically reading a target based on light reflected from the target, an imaging lens with a first optical axis is provided so that the reflected light enters into the imaging lens. A photodetector having an active area and a second optical axis different from the first optical axis is provided. The imaging lens focuses the reflected light on the active area of the photodetector. A fold mechanism is arranged between the imaging lens and the photodetector. The fold mechanism folds an optical path of the reflected light between the imaging lens and the photodetector to adjust a length of the optical path while keeping each of the first and second optical axes constant.

Abstract: An optical information reading apparatus for reading information codes such as a bar code and a two-dimensional code includes, an image-forming lens fixed at a given point and imaging a reflection light from the information code, an optical sensor locating at a position relative to that of the image-forming lens and receiving an image formed by the image-forming lens, a light path bending unit bending the reflection light between the image-forming lens and the optical sensor a plurality of times, a shifter shifting the light path bending unit, a distance measurement unit measuring the distance from the information code to the reading apparatus and a controller controlling the shifter based on the measurement result of the distance measurement unit. The light path length between the image-forming lens and the optical sensor is changed by shifting the light path bending unit using the shifter.

Abstract: In an optical information reader for optically reading a target based on a light reflected from the target, a translucent optical member is located on an optical axis of an imaging lens and is rotatable around a rotation axis. The rotation axis is substantially orthogonal to the optical axis. The translucent optical member is fixable at least first and second predetermined positions. When the translucent optical member is fixed at the first predetermined position, the translucent optical member has a first thickness through which the optical axis is penetrated, and when the translucent optical member is temporally fixed at the second predetermined position, the translucent optical member has a second thickness through which the optical axis is penetrated. The first thickness and second thickness are different from each other.

Abstract: An information code reading apparatus comprises a case, an illuminating light source, and a light receiver. The case has an end portion at which a reading opening is formed. The illuminating light source is disposed within the case and configured to radiate illumination light through the reading opening toward an information code recorded on an object to be read. The light receiver is disposed within the case and configured to receive light reflected from the object through the reading opening. The reflected light returns along a reading light axis residing in a field of view of the light receiver. The reading light axis is oblique to a perpendicular axis to the reading opening, whereby the entire reading opening is illuminated by the light source. The illuminating light source is composed of an area light source disposed outside the field of view in a substantially parallel attitude along the field of view.

Abstract: A liquid crystal display apparatus includes light shielding members provided longitudinally and latitudinally throughout the whole face of one transparent base plate out of a pair of base plates to be provided oppositely with a liquid crystal layer being disposed therebetween, having constant width and pitch, transparent conductive members provided on the liquid crystal layer side, of the above described one pair of light transparent base plate. It is characterized in that the non-display portion provided on the transparent base plate is provided with the light shielding member, with the above-described liquid crystal layer being disposed therebetween, and is overlapped by the light shielding member so as not to protrude from the above described light shield member.

Abstract: In a color liquid crystal display device, the shape of a color filter cannot be seen and coloring of areas other than a display area due to leaking light is prevented. By making a first and second segment electrodes in a two layer construction, it becomes possible to display two different display image planes in different colors with only the single layer type color liquid crystal display device. Further, sufficient contrast can be obtained by using a liquid crystal element for compensation. It is also possible to display two kinds of display image planes, namely a color display image plane and a black and white display image plane. Two kinds of color display image planes can be displayed because the color liquid crystal display device is made in a two layered construction. A so-called normally black display and normally white display can be switched.

Abstract: In a liquid-crystal color display having a pair of light-transmitting substrates disposed opposite each other sandwiching a liquid crystal layer between them and color selecting members and a light blocking member provided on one of the pair of light-transmitting substrates, light-transmitting pixel electrodes are disposed on the liquid crystal layer side of one of the light-transmitting substrates. The pixel electrodes disposed adjacent to each other correspond to different color selecting members and are formed extending into each other's display area in alternating fashion. Accordingly, display patterns formed by adjacent pixel electrodes are allowed to overlap each other, thus making it possible to increase the number of display patterns per unit display area.

Abstract: Disclosed is a liquid-crystal color display having a pair of light-transmitting substrates disposed opposite each other sandwiching a liquid crystal layer between them and color selecting members and a light blocking member provided on one of the pair of light-transmitting substrates, wherein the shape of each pixel defined by the color selecting members and the light blocking member is a parallelogram with all four angles other than 90.degree.. Accordingly, the liquid-crystal color display of the invention is capable of displaying sloping letters such as italics and other sloping patterns as naturally sloping patterns easy to recognize.

Abstract: A color liquid crystal display device in which a color filter is provided over the entire surface of the glass substrate. In a first embodiment, display electrodes extend over a plurality of color filter sectors to form segment electrodes. In a second embodiment, the transmissivity of light passing through the liquid crystal layer can be varied in levels by making the display electrodes in two-layer, operating voltage on each of the electrodes independently, and varying in levels the amplitude of voltage applied on the liquid crystal layer by the display electrodes. In a third embodiment, the amount of light transmitted in the display area of a color filter sector is controlled by two or more display electrodes which divide up the display area.