US5021931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lenticular luminescent screen
Assignee: Pioneer Corp
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Filing: 1990-02-15
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Granted: 1991-06-04
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Expires: 2010-02-15
Abstract
Abstract A lenticular luminescent screen includes a lenticular base plate made of a transparent material which contains a substance capable of emitting luminescent light in response to stimulating light applied thereto. The lenticular base plate having at least one surface composed of a plurality of adjacent partly cylindrical lens elements. Since the cylindrical lens elements can catch stimulating light with a higher efficiency, the luminescent screen can emit an increased intensity of luminescent light. Inasmuch as the luminescent screen is reduced in thickness between the adjacent cylindrical lens elements, emitted luminescent light is prevented from leaking in a direction across the axes of the cylindrical lens elements.
Inventors
- 👤 Fumio Matsui
- 👤 Yasushi Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:21
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/602; G02; G02B; G02B3/00; G02B3/0006; G02B3/0037; G02B3/005; G02B2207/00; G02B2207/113; G02B3/0012; G02B3/0031; G02B3/0062; G02B3/0068
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A lenticular luminescent screen used for a back or front projection type image display system comprising a base plate made of a mixture of a transparent synthetic resin and a luminescent substance, said luminescent substance being capable of emitting luminescent light when stimulating light is applied thereto, said base plate having at least one surface composed of a plurality of cylindrical convex surfaces extending adjacent and parallel to each other.
Claim 2
Dependent Claim
70 words
A lenticular luminescent screen used for a back or front projection type image display system comprising a base plate made of a mixture of a transparent synthetic resin and a luminescent substance, said luminescent substance being capable of emitting luminescent light when stimulating light is applied thereto, said base plate having at least one surface composed of a plurality of cylindrical convex surfaces extending adjacent and parallel to each other.
Claim 3
Dependent Claim
21 words
A lenticular luminescent screen according to claim 1, further including a plurality of black regions disposed between said cylindrical convex surfaces.
Claim 4
Dependent Claim
62 words
A lenticular luminescent screen comprising a lenticular base plate made up of a transparent material which contains a substance capable of emitting luminescent light in response to stimulating light applied thereto, said lenticular base plate having at least one surface comprising a plurality of adjacent partly cylindrical convex surfaces and a plurality of black regions disposed between said partly cylindrical convex surfaces.
Claim 5
Dependent Claim
62 words
A lenticular luminescent screen comprising a lenticular base plate made up of a transparent material which contains a substance capable of emitting luminescent light in response to stimulating light applied thereto, said lenticular base plate having at least one surface comprising a plurality of adjacent partly cylindrical convex surfaces and a plurality of black regions disposed between said partly cylindrical convex surfaces.
References Cited (Backward Citations)
US2807737A
Cited
US4082978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |