Optical waveguides – Optical fiber bundle – Imaging
Patent
1990-10-22
1992-09-22
Lee, John D.
Optical waveguides
Optical fiber bundle
Imaging
385115, 385901, G02B 604
Patent
active
051504456
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a luminous display system provided with a display screen on which an enlarged display image is formed by means of a liquid crystal display (LCD) panel through optical fibers, which liquid crystal panel constitutes a terminal display unit.
DESCRIPTION OF THE PRIOR ART
Hitherto, in a luminous display system, it is well known to transmit a display image and the like through bundles of optical fibers so as to present a luminous display of the image on a screen of the system. In this kind of luminous display system, for example, as shown in FIG. 5, output terminals of the optical fibers 52 are embedded in a display screen 50 through a predetermined number of through-holes which are so formed in a screen board 51 as to correspond in position to dots forming a desired display pattern such as characters and graphic designs; input terminals of the optical fibers 52 are bundled into a suitable number of groups 53a, 53b, . . . corresponding to the suitable number of portions of the display pattern; and light sources 54a, 54b, . . . and color filters 55a, 55b, . . . are provided in the vicinity of the groups 53a, 53b, . . . of the input terminals of the optical fibers 52 to issue color light to the input terminals of the groups 53a, 53b, . . . , the color light being transmitted to the screen board 51 through the optical fibers 52 so that the color light provides the luminous display pattern such as desired graphic designs and characters on the screen 50.
As described above, it is possible for the luminous display system incorporating the optical fibers 52 to provide a desired display pattern such as characters and graphic designs on its display screen 50. In addition to this, it is also possible to employ the output terminals of the optical fibers 52 of the above system in place of miniature lamps with which a Xmas tree is decorated, which output terminals of the optical fibers 52 are lighted intermittently in use.
However, the conventional luminous display system incorporating the optical fibers suffers from some disadvantages as follows. Namely, in the conventional luminous display system, since the optical fibers are bundled into a suitable number of groups corresponding to the suitable number of portions of the desired display pattern and each of the groups of the optical fibers requires a light source in the vicinity of the input terminals of the optical fibers of the group, the conventional display system is complex in construction and constitutes a large-sized apparatus requiring a large space in installation. In addition, the conventional luminous display system also suffers from its large electric power consumption caused by many light sources employed in the system, which large electric power consumption results in a large amount of heat which is produced in the system in operation to increase a temperature of the system quite considerably. Consequently, the conventional luminous display system is laborious and costly in its operation and maintenance. Further, in the conventional luminous display system, since the through-holes are formed in the display screen in positions corresponding to dots forming the desired display pattern, it is impossible for the conventional system to move the display pattern or image on the screen. As a result, the user soon tires of such system that presents only one display pattern or image. In the conventional luminous display system, in case that the display pattern is replaced with a new pattern, it is necessary to convert a substantially entire system. However, such entire conversion takes much money. In order to vary the display pattern in color, the conventional luminous display system employs color filters each of which is interposed between the light source and the input terminal of each of the groups of the optical fibers and moved in use to vary the display pattern or image in color. However, the user also soon tires of such fixed pattern even if it varies in color.
SUMMARY OF THE INVENTION
It is an object
REFERENCES:
patent: 4279089 (1981-07-01), Murakami
patent: 4299447 (1981-11-01), Soltan et al.
patent: 4601537 (1986-07-01), Saccocio
patent: 4917448 (1990-04-01), Oppenheimer
Takesako Masafumi
Toyoda Takashi
Barns Stephen W.
Lee John D.
Minto Kensetsu Co. Ltd.
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