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US4382272A
Expired / Lapsed
US
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Colored lamp
Assignee: Siemens AG
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Filing: 1980-10-28
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Granted: 1983-05-03
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Expires: 2000-10-28
Abstract
Abstract A colored lamp is emitting colored light of a given range of wavelengths and particularly useful for interior and exterior lighting, for luminous advertising, for street lighting, for signal lights and for decorations characterized by a source of light and an arrangement for absorbing a light wave spectrum which has a shorter wavelength than the given range and for emitting light with a longer wavelength due to photo-luminescence with the arrangements including at least one body provided with a luminescent substance for absorbing the light and emitting the luminescent light. The body may be formed by a container of liquid, a bundle of optical fibers or a solid member which acts as a light concentrator in such a manner that the incident light is collected and conducted by means of a photo-luminescent scattering and subsequent total reflection at the boundary surfaces of the body, with the luminescent light being emitted in specific output locations.
Inventors
- 👤 Ferdinand Quella
- 👤 Heinz Pape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:49
CPC Classifications
F; F21; F21K; F21K2/00; F21V; F21V13/00; F21V13/02; F21V13/08; F21V3/00; F21V3/04; F21V3/06; F21V3/08; F21V3/10; F21V3/12; F21V7/00; F21V7/22; F21V7/28; F21V7/30; F21V9/00; F21V9/40; G; G09; G09F; G09F13/00; G09F13/20; G09F13/04; G09F13/0418; G09F13/0472
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
173 words
A colored lamp for emitting colored light of a given range of wavelengths, said lamp comprising a housing having an opening, a source of light being disposed in said housing and providing light of a given light wavelength spectrum, and means for absorbing the light of said light wavelength spectrum which has a shorter wavelength than a given range and emitting light with a longer wavelength in the given range, said means being disposed across said opening and including at least one luminescent body of transparent material containing fluorescent particles for absorbing light of the light wavelength spectrum and emitting fluorescent light of said longer wavelength, said particles being disposed in said body, said body being a light concentrator having at least one output location for output coupling light being conducted therein so that said body collects incident light by absorbing it at said particles and by total reflection of the emitted fluorescent light at the boundary surfaces of the body until the emitted fluorescent light is output coupled at said output locations.
Claim 2
Dependent Claim
173 words
A colored lamp for emitting colored light of a given range of wavelengths, said lamp comprising a housing having an opening, a source of light being disposed in said housing and providing light of a given light wavelength spectrum, and means for absorbing the light of said light wavelength spectrum which has a shorter wavelength than a given range and emitting light with a longer wavelength in the given range, said means being disposed across said opening and including at least one luminescent body of transparent material containing fluorescent particles for absorbing light of the light wavelength spectrum and emitting fluorescent light of said longer wavelength, said particles being disposed in said body, said body being a light concentrator having at least one output location for output coupling light being conducted therein so that said body collects incident light by absorbing it at said particles and by total reflection of the emitted fluorescent light at the boundary surfaces of the body until the emitted fluorescent light is output coupled at said output locations.
Claim 3
Dependent Claim
57 words
A colored lamp according to claim 1, wherein the luminescent body is composed of a transparent material having the fluorescent particles being undissolved pigments scattered therethrough, said transparent material and said pigments being selected so that the index of refraction of the transparent material coincides as well as possible with the index of refraction of the pigments.
Claim 4
Dependent Claim
22 words
A colored lamp according to claim 1, wherein reflective means are employed for guiding the fluorescent light being conducted in said body.
Claim 5
Dependent Claim
34 words
A colored lamp according to claim 1, which includes means for reflecting being provided at locations of said body at which locations total reflection of the light is not obtained due to structural features.
Claim 6
Dependent Claim
36 words
A colored lamp according to claim 1, wherein the luminescent body except at the output location is arranged with a layer on a front surface thereof, said layer reflecting the fluorescent light back into said body.
Claim 7
Dependent Claim
20 words
A colored lamp according to claim 5, wherein said layer being transparent to the excitation light for the fluorescent particles.
Claim 8
Dependent Claim
30 words
A colored lamp according to claim 1, wherein the luminescent body adjacent one surface except in the output location is provided with a foil which greatly absorbs the fluorescent light.
Claim 9
Dependent Claim
20 words
A colored lamp according to claim 7, wherein said foil is transparent to the excitation light for the fluorescent particles.
Claim 10
Dependent Claim
26 words
A colored lamp according to claim 1, wherein the output locations are formed by means for changing the optical characteristics of a surface of the body.
Claim 11
Dependent Claim
21 words
A colored lamp according to claim 9, wherein said means for changing the optical characteristics comprises printing pigments on said surface.
Claim 12
Dependent Claim
27 words
A colored lamp according to claim 9, wherein the means for changing optical characteristics include coated notches, bulges and bubbles provided in the surface of the body.
Claim 13
Dependent Claim
29 words
A colored lamp according to claim 1, wherein each of the output locations is formed by means disposed in said body for changing the optical transmission of light therein.
Claim 14
Dependent Claim
36 words
A colored lamp according to claim 12, wherein said means for changing the optical transmission includes additives with a greatly different index of refraction, scattering centers, and scattering particles deposited in the material of the body.
Claim 15
Dependent Claim
20 words
A colored lamp according to claim 1, wherein the plurality of different fluorescent particles are provided in the luminescent body.
Claim 16
Dependent Claim
20 words
A colored lamp according to claim 1, wherein different fluorescent particles are provided in said body with topically differing concentrations.
Claim 17
Dependent Claim
21 words
A colored lamp according to claim 1, which includes at least one additional luminescent body having a fluorescent particles associated therewith.
Claim 18
Dependent Claim
16 words
A colored lamp according to claim 1, wherein the source of light is a fluorescent tube.
Claim 19
Dependent Claim
28 words
A colored lamp according to claim 17, wherein the emission spectrum of the fluorescent tube and the absorption spectrum of the fluorescent particles are matched to one another.
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) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |