US5477436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating device for motor vehicles
Assignee: Robert Bosch GmbH
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Filing: 1993-07-09
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Granted: 1995-12-19
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Expires: 2013-07-09
Abstract
Abstract An illuminating device for motor vehicles has a plurality of light sources formed as semiconductor light sources, each of the semiconductor light sources emitting light of only one color and light colors emitted by different semiconductor light sources are different. The semiconductor light sources include several semiconductor light sources which emit light of a same color. The semiconductor light sources are distributed so that the lights emitted by all semiconductor light sources produce a light of a uniform color which exits the illuminating device.
Inventors
- 👤 Johannes-Gerhard Bertling
- 👤 Doris Boebel
- 👤 Peter Schoettle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:01
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1814; G02B5/1819; B; B60; B60Q; B60Q1/00; F; F21; F21S; F21S41/00; F21S41/10; F21S41/12; F21S41/125; F21S41/14; F21S41/141; F21S41/151; F21S41/153; F21S41/20; F21S41/28; F21V; F21V5/00; F21V5/002; F21S43/00; F21S43/10; F21S43/13; F21S43/14; F21Y; F21Y2115/00; F21Y2115/10; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
113 words
An illuminating device for motor vehicles, comprising a plurality of light sources formed as semiconductor light sources, each of said semiconductor light sources emitting light of only one color and the colors of the light emitted by different semiconductor light sources are different, said semiconductor light sources producing a light of a uniform color which exits the illuminating device; and means for color mixing the light emitted by said different semiconductor light sources and including a joint transparent light disc which covers said semiconductor light sources and is provided with optical elements by which the lights emitted by the individual semiconductor light sources are superposed over one another and provide a color mixing.
Claim 2
Dependent Claim
113 words
An illuminating device for motor vehicles, comprising a plurality of light sources formed as semiconductor light sources, each of said semiconductor light sources emitting light of only one color and the colors of the light emitted by different semiconductor light sources are different, said semiconductor light sources producing a light of a uniform color which exits the illuminating device; and means for color mixing the light emitted by said different semiconductor light sources and including a joint transparent light disc which covers said semiconductor light sources and is provided with optical elements by which the lights emitted by the individual semiconductor light sources are superposed over one another and provide a color mixing.
Claim 3
Dependent Claim
35 words
An illuminating device as defined in claim 1, wherein said light disc is further provided with optical elements which influence the light emitted by said semiconductor light sources for forming a predetermined light intensity distribution.
Claim 4
Dependent Claim
44 words
An illuminating device as defined in claim 1, wherein each of said semiconductor light sources is provided with a transparent cover having optical elements by which the lights emitted by the individual semiconductor light sources are superposed over one another for a color mixing.
Claim 5
Dependent Claim
34 words
An illuminating device as defined in claim 3, wherein said covers are further provided with optical elements which influence the light emitted by said semiconductor light sources for forming a predetermined light intensity distribution.
Claim 6
Dependent Claim
58 words
An illuminating device as defined in claim 3, wherein said covers of all said semiconductor light sources are identical; and further comprising a joint transparent light disc which covers said semiconductor light sources and is provided with optical elements by which the light emitted by said semiconductor light sources is influenced for forming a predetermined light intensity distribution.
Claim 7
Dependent Claim
36 words
An illuminating device as defined in claim 3, wherein said optical elements are formed as diffraction optical elements, on which an expansion direction of the light emitted by said semiconductor light sources is changed by diffraction.
Claim 8
Dependent Claim
18 words
An illuminating device as defined in claim 1, wherein said semiconductor light sources are formed as light diodes.
Claim 9
Dependent Claim
18 words
An illuminating device as defined in claim 1, wherein said semiconductor light sources are formed as laser diodes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-12-18 | 1999-06-19 | 1999-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-18 | 2003-06-19 | 2003-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-18 | 2007-06-19 | 2007-12-19 | $7700.00 | Window Closed / Lapsed |