US5615045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen of projection display
Assignee: Sony Corp
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Filing: 1995-06-06
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Granted: 1997-03-25
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Expires: 2015-06-06
Abstract
Abstract A longitudinal-stripe lenticular lens screen and a transverse-stripe lenticular lens screen are superposed, and a light diffusing agent is mixed only in the longitudinal-stripe lenticular lens screen. Therefore, the light transmittance is high although the angle of view can be three-dimensionally widened by the two lenticular lens screens. In addition, since scan lines of an image are blurred by two diffusion planes, Moire becomes inconspicuous.
Inventors
- 👤 Hirokazu Takuma
- 👤 Hiromitsu Takeuchi
- 👤 Takaomi Hanabusa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/74; G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/62; G03B21/625; H04N5/72; H04N5/7408; H04N9/00; H04N9/12; H04N9/31
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A screen of a projection display, comprising: a lenticular lens screen having a plurality of lenses on a light incident side and a plurality of lenses on a light exit side, a pitch between the lenses on the light incident side being approximately 0.78 mm, and a width of each lens on the light exit side being approximately 0.35 to 0.45 mm, and at least the apex of each lens on the light exit side projects in the light exit direction farther than a black surface formed on the light exit side of said lens screen.
Claim 2
Dependent Claim
96 words
A screen of a projection display, comprising: a lenticular lens screen having a plurality of lenses on a light incident side and a plurality of lenses on a light exit side, a pitch between the lenses on the light incident side being approximately 0.78 mm, and a width of each lens on the light exit side being approximately 0.35 to 0.45 mm, and at least the apex of each lens on the light exit side projects in the light exit direction farther than a black surface formed on the light exit side of said lens screen.
Claim 3
Dependent Claim
99 words
A screen of a projection display, comprising: a lenticular lens screen having a plurality of lenses on a light incident side and a plurality of lenses on a light exit side, a width of each lens on the light exit side of the lens screen being approximately 44.9% to 57.7% of the pitch between the lenses on the light incident side of the lens screen, and at least the apex of each lens on the light exit side projects in the light exit direction farther than a black surface formed on the light exit side of said lens screen.
Claim 4
Dependent Claim
99 words
A screen of a projection display, comprising: a lenticular lens screen having a plurality of lenses on a light incident side and a plurality of lenses on a light exit side, a width of each lens on the light exit side of the lens screen being approximately 44.9% to 57.7% of the pitch between the lenses on the light incident side of the lens screen, and at least the apex of each lens on the light exit side projects in the light exit direction farther than a black surface formed on the light exit side of said lens screen.
Claim 5
Dependent Claim
39 words
The screen of a projection display according to claim 2, wherein the lenses on the light exit side of the screen comprise skirts that are positioned closer to the light incident side of the screen than the black surface.
References Cited (Backward Citations)
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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) | 2000-03-24 | 2000-09-23 | 2001-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-24 | 2004-09-23 | 2005-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-24 | 2008-09-23 | 2009-03-25 | $7700.00 | Window Closed / Lapsed |