US3691390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite light source
Assignee: ELECTRIC NUCLEAR LAB Inc
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Filing: 1969-10-10
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Granted: 1972-09-12
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Expires: 1989-10-10
Abstract
Abstract Each of an array of ''''n'''' number of similar light sources is repetitively energized in sequence to stimulate emission of light energy therefrom into an optical system which sums the output of the individual devices and forms a composite output into a single beam having a frequency that is ''''n'''' times the frequency of each individual light source.
Inventors
- 👤 Ken-Tang Chow
- 👤 John William Stull
- 👤 Charles Edward Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/50; H01; H01S; H01S5/00; H01S5/06; H01S5/062; H01S5/06209; H01S5/0622; H01S5/40; H01S5/4025
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A method for multiplying the frequency of the output from a periodically electrically energized light source comprising forming an array of a plurality of similar closely adjacent light sources; repetitively electrically energizing in sequence each of the light sources in said array; gathering and optically mixing the light emitted from the several energized light sources; and then optically guiding said light into a composite beam having a common optical field for the light emitted from each light source.
Claim 2
Independent Claim
78 words
A method for multiplying the frequency of the output from a periodically electrically energized light source comprising forming an array of a plurality of similar closely adjacent light sources; repetitively electrically energizing in sequence each of the light sources in said array; gathering and optically mixing the light emitted from the several energized light sources; and then optically guiding said light into a composite beam having a common optical field for the light emitted from each light source.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said light sources are semiconductor light-emittIng devices.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein said light sources are forward-biased gallium arsenide p-n junction diodes.
Claim 5
Dependent Claim
31 words
The method of claim 1 wherein said light sources are forward-biased gallium arsenide p-n junction diodes periodically energized with bias current in excess of the threshold density requisite for lasing action.
Claim 6
Dependent Claim
79 words
Apparatus for multiplying the frequency of the output from a periodically electrically energized light source comprising an array of similar light sources in close spatial relationship; means for repetitively electrically energizing in sequence each of the light sources in said array; optical means for gathering and mixing the light emitted from the several energized light sources; and optical means guiding said light into a composite beam having a common optical field for the light emitted from each light source.
Claim 7
Dependent Claim
79 words
Apparatus for multiplying the frequency of the output from a periodically electrically energized light source comprising an array of similar light sources in close spatial relationship; means for repetitively electrically energizing in sequence each of the light sources in said array; optical means for gathering and mixing the light emitted from the several energized light sources; and optical means guiding said light into a composite beam having a common optical field for the light emitted from each light source.
Claim 8
Dependent Claim
13 words
The apparatus of claim 5 wherein said light sources are semiconductor light-emitting devices.
Claim 9
Dependent Claim
16 words
The apparatus of claim 5 wherein said light sources are forward-biased gallium arsenide p-n junction diodes.
Claim 10
Dependent Claim
41 words
The apparatus of claim 5 wherein said light sources are forward-biased gallium arsenide p-n junction diodes and wherein said means for energizing the light sources supplies bias current to said diodes in excess of the threshold density requisite for lasing action.
Claim 11
Dependent Claim
54 words
The apparatus of claim 5 wherein said means for energizing said light sources includes a supply of bias current, gate means for connecting said supply to one of said light sources at a time, and clock controlled means for enabling said gate means to repetitively connect each light source in sequence to said supply.
Claim 12
Dependent Claim
71 words
The apparatus of claim 5 wherein said optical means for gathering and mixing light from the light sources comprises a light transmissive conduit, having a large end gathering radiation emitted from said light sources and a smaller end for emitting the combined light from all of said sources, an optically reflective coating on the exterior surface of said conduit, and a light transparent aperture at the small end of said conduit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |