US5408264A
Expired / Lapsed
US
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Three-dimensional image display apparatus for optically synthesizing images formed on different surfaces on a display screen
Assignee: Sharp Corp
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Filing: 1992-04-10
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Granted: 1995-04-18
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Expires: 2012-04-10
Abstract
Abstract A three-dimensional image display apparatus which includes a plurality of display devices, a first optical arrangement for synthesizing a plurality of images from the image display devices, a second optical arrangement for changing a position where at least one of the images is projected, the first and second optical arrangement synthesizing a plurality of images formed at different positions.
Inventors
- 👤 Yukio Kurata
- 👤 Keiji Sakai
- 👤 Yoshio Yoshida
- 👤 Takahiro Miyake
- 👤 Toshio Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:19
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/388; H04N13/395; G; G02; G02B; G02B30/00; G02B30/20; G02B30/22; G02B30/25; H04N13/302; H04N13/322
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
58 words
A three-dimensional image display apparatus comprising a plurality of display devices, a first optical means for synthesizing a plurality of images from the image display devices, a second optical means for changing a position where at least one of the images is projected, the first and second optical means synthesizing a plurality of images formed at different positions.
Claim 2
Dependent Claim
58 words
A three-dimensional image display apparatus comprising a plurality of display devices, a first optical means for synthesizing a plurality of images from the image display devices, a second optical means for changing a position where at least one of the images is projected, the first and second optical means synthesizing a plurality of images formed at different positions.
Claim 3
Dependent Claim
17 words
A three-dimensional image display apparatus according to claim 1, wherein the first optical means has polarizing characteristics.
Claim 4
Dependent Claim
25 words
A three-dimensional image display apparatus according to claim 1, wherein an irradiating light from the display devices or a reflecting light thereon has polarizing characteristics.
Claim 5
Dependent Claim
19 words
A three-dimensional image display apparatus according to claim 1, wherein the transmissibility and reflection ratio include wavelength selective characteristics.
Claim 6
Dependent Claim
30 words
A three-dimensional image display apparatus according to claim 1, wherein the second optical means changes the size of a projected image depending upon the position where the image is projected.
Claim 7
Dependent Claim
23 words
A three-dimensional image display apparatus according to claim 1, wherein the second optical means is a lens capable of varying its focal length.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-17 | 1998-10-17 | 1999-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-17 | 2002-10-17 | 2003-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-17 | 2006-10-17 | 2007-04-18 | $7700.00 | Window Closed / Lapsed |