US3914786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line reflective lead-pair for light-emitting diodes
Assignee: HP Inc
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Filing: 1974-04-19
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Granted: 1975-10-21
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Expires: 1994-04-19
Abstract
Abstract A plurality of flat, subminiature, reflective in-line lead pairs for light-emitting diodes is contained in a frame. Each lead pair has a flat mounting surface for the diode chip. Although the diode chip is mounted on one of the lead pairs, the deep reflector for side-emitted light is formed from both leads of the pair. The reflector configuration provides for mounting semiconductor chips in addition to the diode chip therein. The reflector also precludes an illuminated light-emitting diode from inadvertently illuminating one or more adjacent light-emitting diodes.
Inventors
- 👤 Brian John Grossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:34
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/857; H10H20/855; H10H20/856
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
AN IN-LINE LEAD PAIR OR IGHT-EMITTING DIODES HAVING IMPROVIDED LUMINOUS EFFICIENCY, SAID LEAD PAIR COMPRISING: FIRST AND SECOND LEADS EACH HAVING THICKNESS AND WIDTH DIMENSION, SAID THICKNESS DIMENSION BEING LESS THAN SAID WIDTH DIMENSION, SAID FIRST AND SECOND LEADS FURTHER HAVING LATERAL EXTENSION PROJECTING THEREFROM, AND SAID FIRST LEADS BEING SPACED APART FROM SAID SECOND LEAD BY A PRESELECTED DISTANCE, AND SAID FIRST LEAD HAVING A MOUNTING AREA IN A PLANE DETERMINED BY THE WIDTH DIMENSION AND THE LONGITUDINAL AXIS OF THE LEAD PAIR FOR MOUNTING AT LEAST ONE LIGHT-EMITTING DIODE CHIP THEREON, SAID MOUNTING AREA HAVING A REFLECTOR FORMED BY BENDING THE LATERAL EXTENSIONS OF SAID FIRST AND SECOND LEADS ALONG A LINE ESSENTIALLY PARALLEL TO THE LONGITUDINAL AXIS THEREOF AND TOWARDS SAID MOUNTING AREA TO REFLECT NON-AXIALLY EMITTING LIGHT FROM SAID DIODE CHIP ALONG AN AXIS ORTHOGONAL TO SAID MOUNTING AREA.
Claim 2
Dependent Claim
143 words
AN IN-LINE LEAD PAIR OR IGHT-EMITTING DIODES HAVING IMPROVIDED LUMINOUS EFFICIENCY, SAID LEAD PAIR COMPRISING: FIRST AND SECOND LEADS EACH HAVING THICKNESS AND WIDTH DIMENSION, SAID THICKNESS DIMENSION BEING LESS THAN SAID WIDTH DIMENSION, SAID FIRST AND SECOND LEADS FURTHER HAVING LATERAL EXTENSION PROJECTING THEREFROM, AND SAID FIRST LEADS BEING SPACED APART FROM SAID SECOND LEAD BY A PRESELECTED DISTANCE, AND SAID FIRST LEAD HAVING A MOUNTING AREA IN A PLANE DETERMINED BY THE WIDTH DIMENSION AND THE LONGITUDINAL AXIS OF THE LEAD PAIR FOR MOUNTING AT LEAST ONE LIGHT-EMITTING DIODE CHIP THEREON, SAID MOUNTING AREA HAVING A REFLECTOR FORMED BY BENDING THE LATERAL EXTENSIONS OF SAID FIRST AND SECOND LEADS ALONG A LINE ESSENTIALLY PARALLEL TO THE LONGITUDINAL AXIS THEREOF AND TOWARDS SAID MOUNTING AREA TO REFLECT NON-AXIALLY EMITTING LIGHT FROM SAID DIODE CHIP ALONG AN AXIS ORTHOGONAL TO SAID MOUNTING AREA.
Claim 3
Dependent Claim
53 words
An in-line lead pair as in claim 1 wherein said lateral extensions are bent to an angle of approximately 45* relative to the plane defined by the mounting area, and said lateral extensions have projections which are bent to an angle of approximately 45* relative to the plane defined by said lateral extensions.
Claim 4
Dependent Claim
19 words
An in-line lead pair as in claim 1 wherein the first and second leads further have a reflective coating.
Claim 5
Dependent Claim
19 words
An in-line lead pair as in claim 1 wherein the preselected distance is approximately equal to the thickness dimension.
Claim 6
Dependent Claim
23 words
An in-line lead pair as in claim 1 wherein: the first lead forms a greater portion of the reflector than the second lead.
Claim 7
Dependent Claim
49 words
An in-line lead pair as in claim 1 further including molded encapsulation wherein said encapsulation is formed into a lens having an outer diameter which is approximately equal to the major dimension of the reflector to direct the emitted light orthogonal to the plane defined by the mounting area.
Claim 8
Dependent Claim
13 words
An in-line pair as in claim 6 wherein the encapsulation includes light diffusers.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |