摘要:
An image display apparatus is provided for enlarging and projecting a light emitted from a plurality of self-emitting elements on a screen by beam scanning means, which is an image display apparatus having little or no luminance unevenness by solving the conventional problem of causing luminance unevenness in images projected on the screen due to a variance in luminance characteristics of each self-emitting element. It is configured such that a part of the light scanned on the screen from the beam scanning means is provided to a photodetector element that converts the intensity of the light into an electric signal so as to correct a driving signal to be supplied to the self-emitting element by the intensity of the light detected by this photodetector element.
摘要:
Three colors of light beams from a light source travel via a first optical system to strike a reflecting surface of a rotating polygon mirror, or mirrors, at different angles without overlapping. The rotating polygon mirror or mirrors reflect the light beams for scanning. The reflected light beams enter a second optical system at different angles to illuminate an image display panel at different portions. On the image display panel, belt-like regions illuminated by the light beams of individual colors are formed in parallel with each other, and these illuminated regions are moved continuously by scanning. A formed color image is magnified and projected by a projection optical system. With such a projection type image display apparatus, a display having high resolution and light efficiency that is also small, thin and inexpensive is achieved.
摘要:
The present invention provides a presentation system, a display device, and a program which realize a smoother presentation performance in case where information a presenter wishes to refer to is displayed in a terminal but not in a display device. The presentation system of the present invention is structured, for instance, by connecting a PC 100 and a projector 200 via a LAN 50. A display unit of the PC 100 can be set up to display information including, for example, explanatory notes, but when making the projector 200 display an image, the information will not be displayed by executing a data modification which makes the information invisible. The information such as the explanatory notes may be placed at an arbitrary location on the display unit 102 and this enables a smoother presentation performance.
摘要:
Color lights from image projecting sections (207) that enlarge and project images of red, green and blue, respectively, are made incident on a transparent screen at different angles of incidence, so that image synthesis is carried out. The color lights projected are converted into telecentric light by a Fresnel lens (211), and after principal rays of the respective color lights are converted into substantially parallel rays by a color shading eliminating means (219) provided with lenticular lenses on both sides thereof, the rays are incident on a light diffusing means (224). The light diffusing means (224) is formed with a transparent substrate sheet and a plurality of transparent micro beads made to adhere onto a light-incident surface of the substrate sheet with an opaque adhesive. Image light passes through light transmitting portions between the substrate sheet and the micro beads to be diffused. This configuration enables to provide a rear-projection image display whose display images are hardly affected by external light, which has an increased angle of visibility, and which undergoes less color shading, without a decrease in light utilization efficiency.
摘要:
A picture display apparatus which converts an input optical image into a projected picture using a photoelectric effect. The picture display apparatus includes an image transfer device having a plurality of graded index lenses which are bundled in parallel to an optical axis. The image transfer device is provided between an electro-optical device and a picture display device so that an input optical image on the picture display device is transferred in equisize onto the photoconductive layer of the electro-optical device.
摘要:
An illumination apparatus includes a light source (1), a first integrator (11) into which light from the light source (1) enters, and a second integrator (33) into which light exiting from the first integrator (11) enters. Accordingly, the aperture shape of the first integrator (11) can be optimally designed, so that the light utilization efficiency can be increased. Furthermore, even when the length of the first integrator (11) is reduced, a deficiency in the light uniformity due to the first integrator (11) is compensated for by the second integrator (33), so that high uniformity can be secured at the surface to be illuminated.
摘要:
An illumination apparatus includes a light source (1), a first integrator (11) into which light from the light source (1) enters, and a second integrator (33) into which light exiting from the first integrator (11) enters. Accordingly, the aperture shape of the first integrator (11) can be optimally designed, so that the light utilization efficiency can be increased. Furthermore, even when the length of the first integrator (11) is reduced, a deficiency in the light uniformity due to the first integrator (11) is compensated for by the second integrator (33), so that high uniformity can be secured at the surface to be illuminated.
摘要:
In a projection type image display apparatus, the screen is divided and a memory to record luminance correction data corresponding to the divided regions is provided, and addresses of the divided regions of the screen are set by an address counter, synchronized with the input video signal. The luminance correction data are read successively by inputting the addresses to the memory, and luminance nonuniformity on the screen is corrected through operational processing of the correction value converted in an analog value by a D/A converter and the input video signal. The luminance correction data is obtained by computing measurement results of respective luminance characteristics of red, green, and blue colors on the screen and separately recorded as an amplitude correction component and a DC level correction component. By multiplying and adding the correction data to the input video signal respectively, nonuniformities in luminance and color from low luminance level to high luminance level can be precisely corrected. Also, as the read start position and read direction of the memory can be set corresponding to sweep direction of a projection type image display apparatus, the projection direction to the screen in a projection type image display apparatus can be easily changed without affecting the operation of luminance correction.
摘要:
The instant application describes a method for detecting crosstalk on a display surface compartmentalized into display regions by image patterns that are contained in an input image signal to a display device. The method includes steps of: displaying a first image and a second image on a display surface, the first image including first pattern images having main regions depicted with different brightness from each other and the second image including second pattern images having the main regions and sub regions depicted with different brightness from the main regions; taking an image of the display surface to obtain image data; and comparing at least one of the first and second images with the image data to detect the crosstalk. The first and second pattern images are displayed in a center region at a center of the display surface and adjacent regions adjacent to the center region.
摘要:
A stereoscopic display apparatus and a stereoscopic display system capable of reducing flicker due to the influence of a fluorescent lamp while preventing an increase in crosstalk. The stereoscopic display apparatus includes a display controller that causes a display section to display left-eye video and right-eye video based on an input left-eye video signal and right-eye video signal and a shutter control section that controls an open/closed state of left and right shutters of stereoscopic image observation glasses in an opening/closing cycle in accordance with a display cycle of the left-eye video and the right-eye video, wherein the shutter control section controls a duty ratio of an Open period of each of the left and right shutters to a greater value than 50% and the display controller causes the display section to display video on a side whose shutter is in the open state of the left-eye video and the right-eye video only while the shutter control section exercises control so that one of the left and right shutters is in the closed state.