US3845318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocoupling device having the transmitter and receiver mounted on opposing edges of aligned lugs
Assignee: US Philips Corp
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Filing: 1974-01-18
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Granted: 1974-10-29
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Expires: 1994-01-18
Abstract
Abstract A photocoupling device comprising a phototransmitter and a photosensitive receiver which are arranged opposite to each other on connection lugs which during manufacture may form part of metal combs. The device is characterized in that the transmitter and the receiver are each mounted on side surfaces of the lugs to facilitate optical alignment of the device.
Inventors
- 👤 J Thillays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:44
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/20; H10F55/25
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A photocoupler device, comprising: first and second spaced lugs having respectively first and second flat major surfaces lying in the same plane and having respectively first and second flat side surfaces perpendicular to said plane and oriented substantially parallel to and at least in part facing each other; a semiconductor phototransmitter having two flat substantially parallel major surfaces, one major surface of which may be caused to emit electromagnetic energy and the other major surface of which is mounted on and supported thereby parallel to said first side surface for transmitting light energy toward said second side surface; a semiconductor photosensitive receiver having two flat substantially parallel major surfaces, one major surface of which is sensitive to said light energy and the other major surface of which is mounted on and supported thereby parallel to said second side surface in optical alignment with said phototransmitter for receiving light energy from said phototransmitter; and light transparent supportive material encapsulating said phototransmitter, photosensitive receiver and a portion of each of said lugs mounted thereto.
Claim 2
Dependent Claim
172 words
A photocoupler device, comprising: first and second spaced lugs having respectively first and second flat major surfaces lying in the same plane and having respectively first and second flat side surfaces perpendicular to said plane and oriented substantially parallel to and at least in part facing each other; a semiconductor phototransmitter having two flat substantially parallel major surfaces, one major surface of which may be caused to emit electromagnetic energy and the other major surface of which is mounted on and supported thereby parallel to said first side surface for transmitting light energy toward said second side surface; a semiconductor photosensitive receiver having two flat substantially parallel major surfaces, one major surface of which is sensitive to said light energy and the other major surface of which is mounted on and supported thereby parallel to said second side surface in optical alignment with said phototransmitter for receiving light energy from said phototransmitter; and light transparent supportive material encapsulating said phototransmitter, photosensitive receiver and a portion of each of said lugs mounted thereto.
Claim 3
Dependent Claim
66 words
A photocoupler device as defined in claim 1 wherein the width of said phototransmitter is approximately equal to the thickness of said first lug, and the width of said photosensitive receiver is approximately equal to the thickness of said second lug to facilitate accurately mounting said phototransistor and photosensitive receiver on said lugs to make optical alignment dependent only upon the relative position of said lugs.
Claim 4
Dependent Claim
25 words
A photocoupler device as defined in claim 2 wherein the thickness of both lugs is the same to facilitate the relative positioning of said lugs.
Claim 5
Dependent Claim
45 words
A photocoupler device as defined in claim 3 wherein said phototransmitter and photosensitive receiver are respectively mounted adjacent edges oriented in the direction of thickness of said first and second lugs respectively to further facilitate accurately mounting said phototransmitter and photosensitive receiver on said lugs.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |