US3696263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state light source with optical filter containing metal derivatives of tetraphenylporphin
Assignee: Verizon Laboratories Inc
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Filing: 1970-05-25
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Granted: 1972-10-03
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Expires: 1990-05-25
Abstract
Abstract A solid state light source adapted for viewing in an environment of ambient light. A solid state light-emitting device is provided for emitting a narrow band of visible light. An optical filter is disposed in the path between the light emitting device and the viewer. The filter is a polymeric matrix which contains at least one metal derivative of tetraphenylporphin. In a preferred embodiment of the invention the polymeric matrix is an acrylic ester polymer which overlays the transparent encapsulating surface of a red-emitting GaAsP diode.
Inventors
- 👤 Paul Wacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:03
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/84
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
19 words
A solid state light source as defined by claim 1 wherein said polymeric matrix is an acrylic ester polymer.
Claim 2
Dependent Claim
44 words
A solid state light source as defined by claim 1 wherein said polymeric matrix is an acrylic ester polymer, said device is red-emitting and said acrylic ester polymer contains the platinum, tin dichloride, and manganese chloride derivatives of the tetraphenylporphin defined in claim 1.
Claim 3
Dependent Claim
18 words
A solid state light source as defined by claim 3 wherein said red-emitting device is a GaAsP diode.
Claim 4
Dependent Claim
47 words
A solid state light source as defined by claim 1 wherein said polymeric matrix is an acrylic ester polymer, said device is green-emitting and said acrylic ester polymer contains the platinum, manganese chloride and nickel derivatives of the tetraphenylporphin defined in claim 1 and a blue dye.
Claim 5
Dependent Claim
18 words
A solid state light source as defined by claim 5 wherein said green-emitting device is a GaP diode.
Claim 6
Dependent Claim
66 words
A solid state light source adapted for viewing in an environment of ambient light comprising: a. a light-emitting diode for emitting a narrow band of visible wavelengths, b. transparent encapsulating means covering said diode, and c. an optical filter layer overlaying said encapsulating means, said layer comprising a polymeric matrix which contains at least one metal derivative of a tetraphenylporphin, said metal derivative having the formula:
Claim 7
Dependent Claim
19 words
A solid state light source as defined by claim 7 wherein said polymeric matrix is an acrylic ester polymer,
Claim 8
Dependent Claim
44 words
A solid state light source as defined by claim 7 wherein said polymeric matrix is an acrylic ester polymer, said diode is red-emitting and said acrylic ester polymer contains the platinum, tin dichloride and manganese chloride derivatives of the tetraphenylporphin defined in claim 7.
Claim 9
Dependent Claim
22 words
A solid state light source as defined by claim 9 additionally comprising a layer of ultraviolet screening material overlaying said filter layer.
Claim 10
Dependent Claim
18 words
A solid state light source as defined by claim 10 wherein said red-emitting diode is a GaAsP diode.
Claim 11
Dependent Claim
47 words
A solid state light source as defined by claim 7 wherein said polymeric matrix is an acrylic ester polymer, said diode is green-emitting and said acrylic ester polymer contains the platinum, manganese chloride and nickel derivatives of the tetraphenylporphin defined in claim 7 and a blue dye.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |