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GB1497115A - Arrangement for indicating the switching state of an optical coupler and optical couplers incorporating such an arrangement - Google Patents

Arrangement for indicating the switching state of an optical coupler and optical couplers incorporating such an arrangement

Info

Publication number
GB1497115A
GB1497115A GB11626/75A GB1162675A GB1497115A GB 1497115 A GB1497115 A GB 1497115A GB 11626/75 A GB11626/75 A GB 11626/75A GB 1162675 A GB1162675 A GB 1162675A GB 1497115 A GB1497115 A GB 1497115A
Authority
GB
United Kingdom
Prior art keywords
arrangement
optical
coupler
light emitting
indicating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB11626/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB11626/75A priority Critical patent/GB1497115A/en
Publication of GB1497115A publication Critical patent/GB1497115A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F55/00—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto
    • H10F55/20—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means

Landscapes

  • Optical Couplings Of Light Guides (AREA)

Abstract

1497115 Optical couplers STANDARD TELEPHONES & CABLES Ltd 20 March 1975 11626/75 Heading H1K An arrangement for indicating the switching state of a semi-conductor optical coupler 11, 12 includes a body of up-converting anti- Stokes phosphor 14 in use, adjacent the light emitting device, e.g. an infra-red radiating diode 12, of the coupler and adapted to convert scattered radiation from the device into visible radiation and means, e.g. a rod lens 18, whereby the visible radiation may be observed. As shown the arrangement is integral with the coupler and is covered by a plastics housing 16. The rod lens 18 may be replaced by optical fibres which may carry the light signal to a remote display panel. The light emitting device 12 is separated from a photosensitive semiconductor device by a transparent isolator 13. In a second embodiment (Fig. 2, not shown) the optical coupler comprises a light emitting diode co-planar with and separated from a mesa-type photosensitive device and both mounted on a substrate. The gap between the diode and device is filled with a material of suitable high refractive index, e.g. silicone resin.
GB11626/75A 1975-03-20 1975-03-20 Arrangement for indicating the switching state of an optical coupler and optical couplers incorporating such an arrangement Expired GB1497115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB11626/75A GB1497115A (en) 1975-03-20 1975-03-20 Arrangement for indicating the switching state of an optical coupler and optical couplers incorporating such an arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11626/75A GB1497115A (en) 1975-03-20 1975-03-20 Arrangement for indicating the switching state of an optical coupler and optical couplers incorporating such an arrangement

Publications (1)

Publication Number Publication Date
GB1497115A true GB1497115A (en) 1978-01-05

Family

ID=9989736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11626/75A Expired GB1497115A (en) 1975-03-20 1975-03-20 Arrangement for indicating the switching state of an optical coupler and optical couplers incorporating such an arrangement

Country Status (1)

Country Link
GB (1) GB1497115A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2343549A (en) * 1998-11-06 2000-05-10 Hewlett Packard Co LED with silicone encapsulation
EP1179858A3 (en) * 2000-08-09 2003-07-30 Agilent Technologies, Inc. (a Delaware corporation) Light emitting devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2343549A (en) * 1998-11-06 2000-05-10 Hewlett Packard Co LED with silicone encapsulation
US6204523B1 (en) 1998-11-06 2001-03-20 Lumileds Lighting, U.S., Llc High stability optical encapsulation and packaging for light-emitting diodes in the green, blue, and near UV range
US6590235B2 (en) 1998-11-06 2003-07-08 Lumileds Lighting, U.S., Llc High stability optical encapsulation and packaging for light-emitting diodes in the green, blue, and near UV range
EP1179858A3 (en) * 2000-08-09 2003-07-30 Agilent Technologies, Inc. (a Delaware corporation) Light emitting devices
US7129638B2 (en) 2000-08-09 2006-10-31 Avago Technologies General Ip (Singapore) Pte. Ltd. Light emitting devices with a phosphor coating having evenly dispersed phosphor particles and constant thickness

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee