US3628039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic radiation wave signal transmission apparatus
Assignee: RACAL-DANA INSTRUMENTS Inc
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Filing: 1969-12-29
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Granted: 1971-12-14
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Expires: 1989-12-29
Abstract
Abstract One or more pairs of devices are aligned in a predetermined relationship upon a mounting member such as a printed circuit board. One of the devices is a light-emitting device, and the other is a light-responsive device. Each of the pairs of devices are covered by a surface which, at least over that area upon which the electromagnetic radiation from the emitting device impinges, is a segment of an ellipsoid. Preferably the cover is a figure of revolution of an ellipse about the major axis which is then divided in half by a plane extending through the major axis. When a plurality of pairs of such devices are utilized, the cover constitutes a plurality of half-ellipsoids interconnected together and arranged in such a manner that they include indexing means which mate with registration means on the printed circuit board so as to obtain proper alignment of the cover with each pair of devices. In any event, the alignment is such that each of the devices is positioned approximately at one focus of the halfellipsoid, or segment thereof.
Inventors
- 👤 Eugene V Ochs
- 👤 Jeffrey L Monroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:16
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/80; H04B10/801; H04B10/802
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
175 words
Transmission apparatus for conveying signal information in electromagnetic radiation waveform while maintaining physical and substantial electrical isolation comprising: a. a printed circuit board having a printed circuit thereon defining a first plane surface; b. electromagnetic radiation wave emitter means electrically interconnected with said printed circuit affixed at a first location on said surface and in a plane parallel to said surface for emitting radiation in a predetermined direction; c. electromagnetic radiation wave receiver means electrically interconnected with said printed circuit affixed at a second location on said surface and in a plane parallel to said surface; and d. cover means affixed to said surface positioned over said emitter and receiver means, and defining a curved surface positioned to intercept substantially all of said emitted radiation, at least said curved surface being a reflective segment of an ellipsoid, 1. said first location being at approximately one focus of said ellipsoid segment, and 2. said second location being at approximately the other focus of said ellipsoid segment, whereby said emitted radiation is focused onto said receiver means.
Claim 2
Dependent Claim
175 words
Transmission apparatus for conveying signal information in electromagnetic radiation waveform while maintaining physical and substantial electrical isolation comprising: a. a printed circuit board having a printed circuit thereon defining a first plane surface; b. electromagnetic radiation wave emitter means electrically interconnected with said printed circuit affixed at a first location on said surface and in a plane parallel to said surface for emitting radiation in a predetermined direction; c. electromagnetic radiation wave receiver means electrically interconnected with said printed circuit affixed at a second location on said surface and in a plane parallel to said surface; and d. cover means affixed to said surface positioned over said emitter and receiver means, and defining a curved surface positioned to intercept substantially all of said emitted radiation, at least said curved surface being a reflective segment of an ellipsoid, 1. said first location being at approximately one focus of said ellipsoid segment, and 2. said second location being at approximately the other focus of said ellipsoid segment, whereby said emitted radiation is focused onto said receiver means.
Claim 3
Dependent Claim
23 words
said second location being at approximately the other focus of said ellipsoid segment, whereby said emitted radiation is focused onto said receiver means.
Claim 4
Dependent Claim
23 words
said second location being at approximately the other focus of said ellipsoid segment, whereby said emitted radiation is focused onto said receiver means.
Claim 5
Dependent Claim
50 words
Transmission apparatus as defined in claim 1 wherein said cover means is a figure of revolution of an ellipse taken about the major axis thereof and then divided approximately in half by a plane extending parallel to said major axis, and the inner surface thereof is reflective to said waves.
Claim 6
Dependent Claim
26 words
Transmission apparatus as defined in claim 2 wherein said cover means further includes an outwardly extending peripheral flange, said flange being affixed to said mounting member.
Claim 7
Dependent Claim
42 words
Transmission apparatus as defined in claim 1 wherein said cover means further includes indexing means and said circuit board includes register means mateable with said indexing means thereby to position said cover member in proper relation to said emitter and receiver means.
Claim 8
Dependent Claim
45 words
Transmission apparatus as defined in claim 1 wherein said emitter means is a plurality of light-emitting devices spaced apart on said board, and said receiver means is a plurality of light-responsive devices spaced apart on said board and aligned each with a separate light-emitting device.
Claim 9
Dependent Claim
33 words
Transmission apparatus as defined in claim 5 wherein said cover means is a plurality of hollow shell-like members interconnected in a predetermined manner to each cover one aligned transmitting device and receiving device.
Claim 10
Dependent Claim
42 words
Transmission apparatus as defined in claim 6 wherein each of said shell-like members is a figure of revolution of an ellipse taken about the major axis thereof and then divided approximately in half by a plane extending parallel to said major axis.
Claim 11
Dependent Claim
33 words
Transmission apparatus as defined in claim 1 wherein a metallic member connected to a point of reference potential is positioned between said emitter and receiver means thereby to effect greater electrical isolation therebetween.
Claim 12
Dependent Claim
25 words
Transmission apparatus as defined in claim 4 wherein said indexing means is a plurality of protrusions and said register means is a pluraliTy of depressions.
Claim 13
Dependent Claim
23 words
Transmission apparatus as defined in claim 6 wherein said cover means is a continuous molded plastic member having the inner surface thereof metallized.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |