Patent US2219065A successfully refreshed from Google Patents.
Patent US3976877A successfully refreshed from Google Patents.
US3976877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opto-electronic photocoupling device and method of manufacturing same
Assignee: US Philips Corp
•
Filing: 1975-02-07
•
Granted: 1976-08-24
•
Expires: 1995-02-07
Abstract
Abstract An opto-electronic photocoupling device in which the light emitter and receiver are coupled optically by a light conductor, and the conductor is constituted by a drop of a first transparent resin embedded in a second resin which is also transparent, the index of refraction of the first resin being higher than that of the second resin.
Inventors
- 👤 Jacques Claude Thillays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:09
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/20; H10F55/25
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
107 words
An opto-electronic photocoupling device of the type comprising a semiconductor light emitter and a semiconductor photosensitive receiver, which are coupled optically by a light conductor and are each connected to electric outputs, the improvement wherein the light conductor is constituted by an oblong mass of a first transparent resin having a relatively high index of refraction and embedded in a second transparent resin, the value of the index of refraction of the said second transparent resin being lower than that of the index of refraction of the said first transparent resin, said light emitter and said photosensitive receiver being embedded in opposed manner in said first resin.
Claim 2
Dependent Claim
107 words
An opto-electronic photocoupling device of the type comprising a semiconductor light emitter and a semiconductor photosensitive receiver, which are coupled optically by a light conductor and are each connected to electric outputs, the improvement wherein the light conductor is constituted by an oblong mass of a first transparent resin having a relatively high index of refraction and embedded in a second transparent resin, the value of the index of refraction of the said second transparent resin being lower than that of the index of refraction of the said first transparent resin, said light emitter and said photosensitive receiver being embedded in opposed manner in said first resin.
Claim 3
Dependent Claim
46 words
An opto-electronic device as claimed in claim 1, wherein said first mass of resin is substantially an oblong solid of revolution constituted by two paraboloids which are symmetric with respect to a plane of which the emitter and the receiver occupy substantially the two focal planes.
Claim 4
Dependent Claim
33 words
A device as claimed in claim 1, wherein the index of refraction of the first resin is higher than 1.55 and the index of refraction of the second resin is lower than 1.45.
Claim 5
Dependent Claim
16 words
A device as claimed in claim 1, wherein the first transparent resin is an epoxy resin.
Claim 6
Dependent Claim
16 words
A device as claimed in claim 1, wherein the second transparent resin is a silicone elastomer.
Claim 7
Dependent Claim
24 words
A device as claimed in claim 1, wherein the emitter, the receiver, the first and the second resin are embedded in an opaque envelope.
Claim 8
Dependent Claim
16 words
A device as claimed in claim 6, wherein the said opaque envelope is an opaque resin.
Claim 9
Dependent Claim
36 words
A device as claimed in claim 1, wherein the emitter and the receiver are soldered to the extremity of metal supports each constituting a contacts for connecting the emitter and the receiver to said electrical outputs.
Claim 10
Dependent Claim
28 words
A device as claimed in claim 8, wherein said supports are constituted by metal lugs to the edge of which the said emitter and said receiver are soldered.
Claim 11
Dependent Claim
31 words
A device as claimed in claim 8, wherein the second transparent resin envelops the assembly of the emitter, the receiver, and at least a part of their supports and contact lugs.
Claim 12
Independent Claim
92 words
A method for manufacturing an optoelectronic photocoupling device comprising placing a drop of a first transparent resin having a relatively high index of refraction between and in contact with a semiconductor light emitter and a semiconductor photosensitive receiver, polymerizing said first resin through a viscous phase to a solid phase, shaping said first resin in said viscous phase into an oblong mass, polymerizing a second resin having a relatively low index of refraction around said emitter, said receiver and said first resin, and surrounding said second resin with an opaque solid material.
Claim 13
Independent Claim
92 words
A method for manufacturing an optoelectronic photocoupling device comprising placing a drop of a first transparent resin having a relatively high index of refraction between and in contact with a semiconductor light emitter and a semiconductor photosensitive receiver, polymerizing said first resin through a viscous phase to a solid phase, shaping said first resin in said viscous phase into an oblong mass, polymerizing a second resin having a relatively low index of refraction around said emitter, said receiver and said first resin, and surrounding said second resin with an opaque solid material.
Claim 14
Dependent Claim
27 words
A method as recited in claim 11, wherein the step of shaping comprises relatively moving said emitter and receiver with the viscous drop of first resin therebetween.
Claim 15
Dependent Claim
24 words
A method as recited in claim 11, further comprising forming metal lugs from sheet metal and soldering said lugs to said emitter and receiver.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |