Patent US6132048A successfully refreshed from Google Patents.
US6132048A
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Single display assembly having selective reflectors to view indicia
Assignee: Google Technology Holdings LLC
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Filing: 1999-09-10
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Granted: 2000-10-17
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Expires: 2019-09-10
Abstract
Abstract A single display assembly (10) has an electronically controllable display (11) with a plurality of display elements (12) and sandwiched by two support plates (13,14), two polarizers (15,16) and two selective reflectors, namely a first selective reflector (17) and a second selective reflector (18). Support plates (13,14) and polarizers (15,16) are transparent media to permit passage of light. Selective reflectors (17,18) are holographic reflectors that are each pre-recorded with characteristics that includes a range (19 or 20) of predetermined incident angles relative to inward facing horizontal surfaces (24,25) and an angular transparency range (not shown) for passage of light. Assembly (10) has two opposite sides (21,22) to view indicia provided by display elements (12). Indicia can be selectively viewed from either of sides (21 or 22) without interference from external background of a remaining one of sides (21 or 22).
Inventors
- 👤 Qi Gao
- 👤 Stefan Peana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
A single display assembly having selective reflectors, said assembly comprising: an electronically controllable display; and at least two selective reflectors including a first selective reflector and a second selective reflector, said display being sandwiched by said selective reflectors, wherein incident light passing through said first selective reflector and said display is reflected back by said second selective reflector through said display and said first selective reflector, said incident light being received within a range of predetermined incident angles relative to an inward facing horizontal surface of said first selective reflector.
Claim 2
Dependent Claim
90 words
A single display assembly having selective reflectors, said assembly comprising: an electronically controllable display; and at least two selective reflectors including a first selective reflector and a second selective reflector, said display being sandwiched by said selective reflectors, wherein incident light passing through said first selective reflector and said display is reflected back by said second selective reflector through said display and said first selective reflector, said incident light being received within a range of predetermined incident angles relative to an inward facing horizontal surface of said first selective reflector.
Claim 3
Dependent Claim
59 words
The assembly as claimed in claim 1 wherein incident light passing through said second selective reflector and said display is reflected back by said first selective reflector through said display and said second selective reflector, said incident light being received within a range of predetermined incident angles relative to an inward facing horizontal surface of said second selective reflector.
Claim 4
Dependent Claim
32 words
The assembly as claimed in claim 1 wherein one of said selective reflectors has an angular transparency range associated with said range of predetermined incident angles of the other of said reflectors.
Claim 5
Dependent Claim
14 words
The assembly as claimed in claim 1 wherein said selective reflectors are holographic reflectors.
Claim 6
Dependent Claim
21 words
The assembly as claimed in claim 1 wherein each of said holographic reflectors comprises one or more layers of holographic elements.
Claim 7
Dependent Claim
15 words
The assembly as claimed in claim 1 and further comprising at least two transparent media.
Claim 8
Dependent Claim
13 words
The assembly as claimed in claim 6 wherein said transparent media includes polarizers.
Claim 9
Dependent Claim
14 words
The assembly as claimed in claim 6 wherein said transparent media includes support plates.
Claim 10
Dependent Claim
36 words
The assembly as claimed in claim 1 and further comprising at least one light guide having at least one light source respectively coupled thereto, said selective reflectors being sandwiched by said at least one light guide.
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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) | 2003-10-17 | 2004-04-17 | 2004-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-17 | 2008-04-17 | 2008-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-17 | 2012-04-17 | 2012-10-17 | $7700.00 | Window Closed / Lapsed |