Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements
Reexamination Certificate
1998-03-26
2001-04-10
Mack, Ricky (Department: 2873)
Optical: systems and elements
Single channel simultaneously to or from plural channels
By surface composed of lenticular elements
C359S462000
Reexamination Certificate
active
06215594
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a stereoscopic image display apparatus by which a stereoscopic image can be observed without a need for special spectacles (polarization spectacles), liquid-crystal shutter spectacles, or the like, and to a transmissive image sheet and an illuminating apparatus used therein. More particularly, the invention concerns the apparatus suitably applicable to the case wherein a transmissive image sheet having a stripe composite image produced from a plurality of still images with parallax such as photographs or CG images is detachably mounted on an illuminating apparatus for illuminating the transmissive image sheet and the stripe composite image is observed as a stereoscopic image.
2. Related Background Art
A widely known method out of the conventional stereoscopic still image display methods for permitting observation of stereoscopic image without polarization spectacles is a method using a stereoscopic image apparatus constructed in such a manner that a plurality of parallax images are divided into a plurality of stripe parallax images in a vertically long stripe shape, a vertical stripe composite image is produced by arranging these stripe parallax images in a predetermined order, and a lenticular lens sheet is bonded to the front surface of the vertical stripe composite image, whereby the plural stripe parallax images forming the vertical stripe composite image are guided to predetermined positions respectively corresponding thereto, so as to permit an observer to recognize a stereoscopic still image.
Since the lenticular lens was disposed on the front surface of the stripe composite image, the conventional stereoscopic still image display method had a problem that the screen glares upon observation of stereoscopic image to be an eyesore.
Since the conventional method described above was the method for integrally forming the stripe composite image and the lenticular lens sheet, the conventional method had a problem that when there were plural pictures which the user desired to see stereoscopic pictures thereof, stereoscopic image devices in each of which the stripe composite image and lenticular lens sheet were integrally formed must be produced in the number corresponding to the number of pictures and thus the production of stereoscopic image devices took considerable labor and time.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a stereoscopic image display apparatus that permits the observer to observe a good stereoscopic image without a glare of the screen and that permits the observer to observe plural stereoscopic images readily and in a good state with saving the time and labor for production of image, by properly arranging the transmissive image sheet having the stripe composite image and the illuminating apparatus for illuminating it, and also to provide the transmissive image sheet and illuminating apparatus used therein. The present invention involves the following configurations.
A stereoscopic image display apparatus of the present invention is either:
a stereoscopic image display apparatus comprising:
an illumination light source;
an illuminating apparatus having an optical system for guiding light from the illumination light source with directivity in predetermined regularity; and
a transmissive image sheet in which a stripe composite image produced by dividing a plurality of parallax images into stripes and arranging the stripes in a predetermined order is provided on a surface of a transparent sheet;
wherein the transmissive image sheet is detachably mounted on the illuminating apparatus and is illuminated by the light from the illumination light source through the optical system, whereby the stripe composite image is observed as a stereoscopic image; or
a stereoscopic image display apparatus comprising:
an illuminating apparatus having
an illumination light source, and
an optical system for changing light from the illumination light source into patterned beams by a mask element consisting of a plurality of aperture portions and shield portions arrayed at predetermined pitch in a horizontal direction and in a vertical direction and for guiding the patterned beams onto a predetermined surface with directivity by a microlens element; and
a transmissive image sheet in which a stripe composite image produced by dividing a plurality of parallax images into stripes and arranging the stripes in a predetermined order is provided on a surface of a transparent sheet;
wherein the transmissive image sheet is detachably mounted on the illuminating apparatus and is illuminated by the light from the illumination light source through the optical system, whereby the stripe composite image is observed as a stereoscopic image.
A stereoscopic image display apparatus of the present invention is either:
(1-1) a stereoscopic image display apparatus comprising: an illumination light source; an illuminating apparatus in which an optical system for guiding light from the illumination light source with directivity in predetermined regularity is housed in a housing; and a transmissive image sheet in which a stripe composite image produced by dividing a plurality of parallax images into stripes and arranging the stripes in a predetermined order is provided on a surface of a transparent sheet; wherein the transmissive image sheet is detachably mounted on the housing and the stripe composite image illuminated by the light from the illuminating apparatus is observed as a stereoscopic image, and wherein the transmissive image sheet is mounted on the housing so that a position of the transmissive image sheet can be adjusted by adjusting means; or
(1-2) a stereoscopic image display apparatus comprising: an illuminating apparatus in which an illumination light source and an optical system are housed in a housing, the optical system being arranged to change light from the illumination light source to patterned beams by a mask element consisting of plural aperture portions and shield portions arrayed at predetermined pitch in a horizontal direction and in a vertical direction and to guide the patterned beams onto a predetermined surface with directivity by a microlens element; and a transmissive image sheet in which a stripe composite image produced by dividing a plurality of parallax images into stripes and arranging the stripes in a predetermined order is provided on a surface of a transparent sheet; wherein the transmissive image sheet is detachably mounted on the housing and the stripe composite image illuminated by the light from the illuminating apparatus is observed as a stereoscopic image, and wherein the transmissive image sheet is mounted on the housing so that a position of the transmissive image sheet can be adjusted by adjusting means.
Particularly, in the configuration (1-1) or (1-2),
(1-2-1) the adjusting means has a function to permit the transmissive image sheet to be moved vertically relative to the housing and to be rotated relative to the housing;
(1-3) a stereoscopic image display apparatus comprising: an illumination light source; an illuminating apparatus in which an optical system for guiding light from the illumination light source onto a predetermined surface with directivity in predetermined regularity is housed in a housing; and a transmissive image sheet in which a stripe composite image in which a plurality of stripe parallax images of a stripe shape are arrayed at predetermined repetition pitch is provided on a surface of a transparent sheet; wherein the transmissive image sheet is detachably mounted on the housing and the stripe composite image illuminated by the light from the illuminating apparatus is observed as a stereoscopic image, and wherein the illuminating apparatus and the transmissive image sheet are provided with a positioning mark for positioning between the illuminating apparatus and the transmissive image sheet;
(1-4) a stereoscopic image display apparatus comprising: an illuminating apparatus in which an illumination light source and an op
Inoguchi Kazutaka
Morishima Hideki
Nose Hiroyasu
Osaka Tsutomu
Taniguchi Naosato
Fitzpatrick ,Cella, Harper & Scinto
Mack Ricky
Mixed Reality Systems Laboratory Inc.
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