Patent US4916593A successfully refreshed from Google Patents.
US4916593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely illuminated transparent holographic stoplight for automobiles
Assignee: Delphi Technologies Inc
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Filing: 1989-01-04
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Granted: 1990-04-10
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Expires: 2009-01-04
Abstract
Abstract A holographic stoplight assembly including a volume hologram having a recorded stoplight image secured adjacent to the inside surface of an automobile window. The volume hologram is selectively illuminated by an illumination source located out of the driver's rearward field of vision and forward of the hologram. Also disclosed is a method for recording a hologram for use in a holographic automobile stoplight system which includes the steps of recording the image of a stoplight in a first hologram, and then recording in a second hologram the playback image of the first hologram.
Inventors
- 👤 Gaylord E. Moss
- 👤 John E. Wreede
- 👤 Kevin Yu
- 👤 Ronald T. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:37
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; G; G02; G02B; G02B5/00; G02B5/32; B60Q1/30; B60Q1/302; B82; B82Y; B82Y20/00; G03; G03H; G03H1/00; G03H1/22; G03H1/2202; G03H2260/00; G03H2260/10; G03H2270/00; G03H2270/20; G03H2270/21
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A holographic automobile stoplight system comprising: a hologram having a recorded image of an automobile stoplight secured adjacent to an automobile rear window; and illumination means located out of the driver's rearward field of view and forward of said hologram for illuminating said hologram which produces in response to the illumination a holographic image of said recorded image that is visible from behind the automobile.
Claim 2
Dependent Claim
65 words
A holographic automobile stoplight system comprising: a hologram having a recorded image of an automobile stoplight secured adjacent to an automobile rear window; and illumination means located out of the driver's rearward field of view and forward of said hologram for illuminating said hologram which produces in response to the illumination a holographic image of said recorded image that is visible from behind the automobile.
Claim 3
Dependent Claim
16 words
The holographic automobile stoplight system of claim 1 wherein said hologram comprises a volume transmission hologram.
Claim 4
Dependent Claim
15 words
The holographic automobile stoplight system of claim 2 wherein said volume hologram comprises dichromated gelatin.
Claim 5
Dependent Claim
15 words
The holographic automobile stoplight system of claim 2 wherein said volume hologram comprises n-polyvinyl carbazole.
Claim 6
Dependent Claim
17 words
The holographic automobile stoplight system of claim 1 wherein said recorded image comprises a lenticular lens array.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |