Abstract: To provide a video display apparatus and an afterimage correcting method for solving the problem of image quality degradation. Removing unit 2 removes DC components from the video signal received by input terminal 1. Integrating unit 3 integrates the video signal with DC components removed by removing unit 2 to generate an integration signal. Subtracting unit 4 subtracts the integration signal generated by integrating unit 3, from the video signal received by input terminal 1.

Abstract: A display device includes: a display unit that displays an image; and a handle provided on a back surface of the display unit. The handle includes: a handle body that is manually grasped; and a fixing part that is detachably fixed to a back surface of the display unit. The fixing part includes: a first fixing mechanism that fixes the handle in a state in which the handle body protrudes outward in a depth direction from the back surface of the display unit, and a gap between the handle body and the display unit in the depth direction is enlarged; and a second fixing mechanism that fixes the handle in a state in which the gap between the handle body and the display unit in the depth direction is reduced relative to a state of the handle being fixed using the first fixing mechanism.

Abstract: Provided is a substrate connecting structure that includes a support housing to which a main substrate is attached, and a shield housing for housing a relay substrate, the support housing being provided with a first opening for exposing a first connector provided in the main substrate, a first guide, and a pair of hinges, the shield housing being provided with a second opening for exposing a second connector provided in the relay substrate, and a second guide that works cooperatively with the first guide, the first guide and the second guide guiding the shield housing so that the shield housing can move perpendicularly to a main surface of the support housing provided with the first opening, ends of the pair of hinges being located between the shield housing and the support housing and being adapted to be rotated to separate the shield housing from the support housing.

Abstract: A display apparatus according to the present invention using a cold cathode fluorescent lamp as a light source includes: a gradient detector which detects a condition in which one end of the cold cathode fluorescent lamp is disposed higher than an other end thereof; and a controller which conducts control so that emitted luminance of the cold cathode fluorescent lamp is inhibited when the condition in which the one end of the cold cathode fluorescent lamp is disposed higher than the other end thereof is detected by the gradient detector.

Abstract: The present invention provides a projection display device configured to solve a caption dropout problem. CPU 3 determines a correction amount required to correct an image signal for distortion. Scaler 4 corrects the image signal for distortion based on the correction amount. Caption signal processing circuit 5 adjusts the display content of a caption signal based on the correction amount in such a manner that the entire caption indicated by the caption signal is displayed. Display image generation circuit 6 synthesizes the caption signal with the display content thereof adjusted by caption signal processing circuit 5, with the image signal corrected by scaler 4. Projection section 7 projects the synthesized image signal.

Abstract: A cable holder includes a holder body, and first and second arm sections that extend from the holder body, and extend in mutually approaching, intersecting directions so as to enclose a housing space for housing a cable. The first arm section has a first oblique section at a tip part thereof, and the second arm section has a second oblique section at a tip part thereof. The first and second oblique sections are inclined in mutually reverse directions, face each other, and are arranged with a gap therebetween.

Abstract: A projection display device that modulates light on the basis of image information to form an optical image, and that projects the formed optical image, includes: light source devices 10R, 10G and 10B; optical modulation device 50 that modulates lights emitted from light source devices 10R, 10G and 10B; and common metal plate 70 on which light source devices 10R, 10G and 10B and optical modulation device 50 are mounted, light source devices 10R, 10G and 10B and optical modulation device 50 being thermally connected via metal plate 70.

Abstract: A display device includes a display section, a frame casing including first and second divided frames, each of the first and second divided frames including first and second holes along a width direction of the frame casing, the first hole being closer to a back surface of the display section than the second hole, the first and second divided frames being attached to the display section by screws passing through the second holes, and a glass plate provided between a front surface of the display section and the frame casing.

Abstract: A projection-type image display apparatus that enlarges and displays an image includes: a case, a laser light source, a cooling mechanism that includes a component that produces vibration during operation, a diffuser that diffuses light that is emitted from the laser light source, optics that shape light diffused by the diffuser to light having a uniform luminance distribution and rectangular cross-section, and an optical modulation element that modulates light shaped by the optics; wherein the component included in the cooling mechanism and the diffuser are connected by way of a vibration transmitting member.

Abstract: A display apparatus includes a driving circuit portion driving a display panel portion, in which the driving circuit portion and a power unit which supplies electric power to the driving circuit portion are arranged on the back surface side, a case housing both the driving circuit portion and the power unit with the display panel portion, a partitioning wall portion which divides a housing space of the case, a gap which is formed between the display panel portion and the partitioning wall portion, and a cooling fan which leads outside air into the gap and which is arranged on the partitioning wall portion. The driving circuit portion and the power unit are arranged on an opposite side of the partitioning wall portion against the gap. The gap is shrunk along a direction from downside to upside of the display panel portion.

Abstract: A lighting optical includes a first light source for emitting first and second color lights and, and a second light source for emitting a third color light. The first light source includes a semiconductor laser element that emits a linearly polarized laser beam, an excitation light generation unit for spatially and temporally separating the laser beam from semiconductor laser element to generate first and second excitation lights and, a first phosphor that emits a first color light by first excitation light, and a second phosphor that emits a second color light by second excitation light. The excitation light generation unit includes a liquid crystal element that converts the incident laser beam into two lights orthogonal to each other in polarization direction, and a light space separation unit for spatially separating the two lights into first and second excitation lights and according to the difference between the two lights in polarization direction.

Abstract: An image display apparatus includes a controller for dividing at least a portion of an image displayed based on a digital video signal, into a plurality of image areas defined by display lines, and establishing different delays for the divided image areas, a clock adjuster generating a clock in synchronism with the dot clock, delaying a phase of the clock according to the delays established by the controller, for the respective divided image areas, and outputting the delayed clock as the reproduced dot clock, and a delay evaluating unit converting differential data between adjacent signal levels into absolute values and accumulatively adding the absolute values based on the reproduced dot clock output from the clock adjuster, with respect to the display lines which define the divided image areas, thereby producing accumulated sums. The controller judges the delay established for the divided area with the maximum accumulated sum, as optimum.

Abstract: A projector that projects an image to a projection object using light emitted from a light source lamp, including a light adjustment sensor that measures the projection distance to the projection object and the intensity of reflected light from the projection object; a zoom position sensor that detects a zoom ratio; and a control section that adjusts the intensity of light emitted from the light source lamp based on the projection distance and the reflected light intensity measured by the adjustment sensor and the zoom ratio detected by the zoom position sensor so as to keep the luminance of a projection image displayed on the projection object constant.

Abstract: Provided is a video display device that quickly determines, when a video signal of unknown resolution is input from the outside, the resolution of the video signal to correctly display a video.

Abstract: This optical component adjustment mechanism includes support frame 21 for supporting optical compensator 11, optical compensator support 20 having first and second rotary salients 22, 23 projecting outside from support frame 21 in a predetermined axis, holder support frame 31 for rotatably supporting first and second rotary salients 22, 23, setscrew 37 for fixing rotation of optical compensator support 20, and bracket 40.

Abstract: A dust removal device is provided which reduces the differences, among different dusty environments, in time at which dust collection is started until the time when possible clogging may occur to significantly increase the time from the start of dust collection until the time when possible clogging occur, while improving dust removal performance. The dust removal device includes main filter 10 that is formed of non-woven cloth 8 with charged fiber, duct 6-1 with main filter 10 disposed therein, sub-filter 11 including a plurality of cylindrical air trunks formed of a charged member, and duct 6-2 with sub-filter 11 disposed therein. Duct 6-1 and duct 6-2 are in communication with each other. In operation, air flows from duct 6-1 to duct 6-2. Main filter 10 in duct 6-1 has a larger vent cross-sectional area than sub-filter 11 in duct 6-2.

Abstract: An illumination apparatus includes a fluorescence unit, laser light irradiation means, and a beam integration unit. The fluorescence unit has a plurality of phosphors, in which the colors of fluorescence generated due to excitation differ, arranged in different regions. The laser light irradiation means irradiates laser light onto the regions of each color of the fluorescence unit while changing the position at which the laser light strikes the fluorescence unit. The beam integration unit integrates fluorescence from each region of the fluorescence unit on a display panel.