US4095116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical coupling element
Assignee: Siemens AG
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Filing: 1977-06-13
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Granted: 1978-06-13
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Expires: 1997-06-13
Abstract
Abstract A useful current component of an electro-optical coupling element is increased by providing a synthetic resin coupling medium having an adhered unitary encapsuling mass composed of the identical synthetic resin forming the coupling medium and containing therein a radiation reflecting material, such as titanium dioxide and a radiation impermeable material, such as aluminum bronze.
Inventors
- 👤 Gerfried Felkel
- 👤 Gerhard Maier
- 👤 Wolfgang Guenzel
- 👤 Guenther Waitl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:37
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/20
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
71 words
In an electro-optical coupling device having a coupling medium mechanically and optically connecting an optical transmitter and an optical receiver and an encapsulating mass about such coupling medium, wherein the coupling medium is optically transmissive and the encapsulating mass reflects the radiation emitted from said optical transmitter and is relatively impermeable by optical radiation exterior of such coupling device for the sensitivity range of said optical receiver, the improvement comprising wherein:
Claim 2
Dependent Claim
71 words
In an electro-optical coupling device having a coupling medium mechanically and optically connecting an optical transmitter and an optical receiver and an encapsulating mass about such coupling medium, wherein the coupling medium is optically transmissive and the encapsulating mass reflects the radiation emitted from said optical transmitter and is relatively impermeable by optical radiation exterior of such coupling device for the sensitivity range of said optical receiver, the improvement comprising wherein:
Claim 3
Dependent Claim
64 words
said encapsulating mass is a single substantially homogeneous layer containing therein an amount of a substantially uniformly dispersed first material particles which renders said encapsulating mass into a highly reflective medium for radiation emitted from said optical transmitter and contains an amount of substantially uniformly dispersed second material particles which render said encapsulating mass highly impermeable to optical radiation from outside said coupling device.
Claim 4
Dependent Claim
64 words
said encapsulating mass is a single substantially homogeneous layer containing therein an amount of a substantially uniformly dispersed first material particles which renders said encapsulating mass into a highly reflective medium for radiation emitted from said optical transmitter and contains an amount of substantially uniformly dispersed second material particles which render said encapsulating mass highly impermeable to optical radiation from outside said coupling device.
Claim 5
Dependent Claim
23 words
In an electro-optical device as defined in claim 1 wherein said coupling medium and said encapsulating mass are composed of a synthetic material.
Claim 6
Dependent Claim
26 words
In an electro-optical device as defined in claim 1 wherein said coupling medium and said encapsulating mass have a base composed of an identical chemical composition.
Claim 7
Dependent Claim
18 words
In an electro-optical device as defined in claim 1 wherein said base is composed of an epoxy resin.
Claim 8
Dependent Claim
19 words
In an electro-optical device as defined in claim 1 wherein said first material particles are composed of titanium dioxide.
Claim 9
Dependent Claim
36 words
In an electro-optical device as defined in claim 5 wherein the amount of titanium dioxide particles within said encompassing mass ranges from about 10% to 30% by weight, based on the weight of the encapsulating mass.
Claim 10
Dependent Claim
33 words
In an electro-optical device as defined in claim 6 wherein the amount of titanium dioxide particles within said enveloping mass is about 30% by weight, based on the weight of the encapsulating mass.
Claim 11
Dependent Claim
19 words
In an electro-optical device as defined in claim 1 wherein said second material particles are composed of aluminum bronze.
Claim 12
Dependent Claim
38 words
In an electro-optical device as defined in claim 8 wherein the amount of aluminum bronze particles within said encapsulating mass ranges from at least 0.1% to about 0.3% by weight, based on the weight of the encapsulating mass.
Claim 13
Dependent Claim
24 words
In an electro-optical device as defined in claim 1 wherein said encapsulating mass has a layer thickness ranging from about 0.5 to 20 mm.
Claim 14
Dependent Claim
20 words
In an electro-optical device as defined in claim 10 wherein said encapsulating mass has a layer thickness of 2 mm.
Claim 15
Dependent Claim
29 words
In an electro-optical device as defined in claim 1 wherein said encapsulating mass has a reflecting capacity of at least 50% for the radiation emitted from said optical transmitter.
Claim 16
Dependent Claim
33 words
In an electro-optical device as defined in claim 1 wherein said encapsulating mass has an absorption capacity of at least 98% for optical radiation entering into said coupling device from the exterior thereof.
Claim 17
Dependent Claim
23 words
In an electro-optical device as defined in claim 1 wherein said coupling device has a high voltage strength of at least 4 KV.
Claim 18
Dependent Claim
21 words
In an electro-optical device as defined in claim 1 wherein said encapsulating mass includes a substantially uniformly dispersed coloring agent therein.
Claim 19
Dependent Claim
46 words
In an electro-optical device as defined in claim 1 wherein said optical transmitter is a diode, such as a luminescent diode and said optical receiver is an element selected from the group consisting of a transistor, a plurality of transistors, a thyristor and a photo-IC element.
References Cited (Backward Citations)
US3153149A
Cited
US4045120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |