WO1997013281A1 - Emetteur d'infrarouges - Google Patents

Emetteur d'infrarouges Download PDF

Info

Publication number
WO1997013281A1
WO1997013281A1 PCT/DE1996/001680 DE9601680W WO9713281A1 WO 1997013281 A1 WO1997013281 A1 WO 1997013281A1 DE 9601680 W DE9601680 W DE 9601680W WO 9713281 A1 WO9713281 A1 WO 9713281A1
Authority
WO
WIPO (PCT)
Prior art keywords
diffuser
housing
infrared
infrared transmitter
transmitter according
Prior art date
Application number
PCT/DE1996/001680
Other languages
German (de)
English (en)
Inventor
Heinz Haas
Herbert Brunner
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1997013281A1 publication Critical patent/WO1997013281A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/483—Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements
    • H01L33/60—Reflective elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
    • H01L2933/0091—Scattering means in or on the semiconductor body or semiconductor body package
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58—Optical field-shaping elements

Definitions

  • the invention relates to an infrared transmitter, in particular an infrared remote control, with an infrared light source and a housing.
  • Surface-mounted LEDs are usually used in remote controls.
  • the designs that are commonly used are, for example, TOPLED and PLCC housings.
  • the SMT transmitter diodes used on the one hand have a relatively broad radiation characteristic, and on the other hand their use is critical due to the possible direct eye contact with the chip, since the radiation energy which is tolerable to the eye may possibly be exceeded.
  • the invention has for its object to provide an infrared sensor of the type mentioned, which is easy and safe for the user to handle.
  • a diffuser is arranged in the area of the housing in the light path.
  • Laser diodes have a very narrow emission characteristic, which would result in a light beam which would be dangerous to the eyes if used directly.
  • the combination of the diffuser according to the invention with the laser diode creates a wider light beam with a low beam density and at the same time a high beam strength.
  • the diffuser is designed as a diffuser layer which is attached to the outlet of the housing and through which the beam passes.
  • a diffusely reflecting layer in the housing onto which the beam is directed and diffusely scattered there.
  • the diffuser can be realized particularly easily by means of a diffuser film which is simply glued onto the housing.
  • the diffuser layer can also be produced with a double potting.
  • side reflectors are advantageously mounted, which reflect the rays towards the exit, so that as far as possible no light is lost in the case and the light beam is directed as completely as possible onto the exit.
  • additional rear-side reflectors and / or reflectors on the top and bottom of the housing.
  • the housing is preferably designed as a plastic component, in which a chip, electrical connections for the chip, the diffuser and reflectors are arranged as a unit.
  • a chip electrical connections for the chip, the diffuser and reflectors are arranged as a unit.
  • the invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing.
  • the schematic representation in the single figure shows a partially sectioned housing and the basic structure of an infrared transmitter according to the invention.
  • the basic structure of an infrared transmitter 1 is shown in a partially sectioned, perspective view.
  • the housing 2 consists of a flat plastic body which is trapezoidal in the exemplary embodiment shown here.
  • a chip 3, which essentially contains the infrared light source, is arranged with its electrical connections in the rear area of the housing. Light emerges at the two end faces of the chip 3 and is reflected via side reflectors 4 at the output 7 of the housing.
  • a diffuser 5 is mounted in the light path 6, which is also referred to as the beam path, in the area of the output 7 of the infrared transmitter 1.
  • the diffuser 5 consists of a diffuser film.
  • direct potting of the components is also possible, in which case the diffuser layer is preferably produced from a double potting.
  • the diffuser 5 is arranged in the light path in such a way that the beam is expanded and a larger area is largely homogeneously illuminated. This component enables an extremely flat, quasi "credit card” infrared remote control with a very high degree of efficiency.
  • DIL-shaped photodiodes can also be used here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Optical Communication System (AREA)

Abstract

Cet émetteur d'infrarouges (1), notamment une unité de télécommande à infrarouges, comprend une source de lumière infrarouge et un boîtier (2). Selon l'invention, un diffuseur (5) est monté dans la trajectoire (6) de la lumière et élargit l'étroit faisceau de lumière, de façon à éclairer une plus grande surface de manière homogène et d'éviter ainsi le risque de dommages pour la vue. Ce montage est particulièrement avantageux lorsqu'une diode laser est utilisée comme source de lumière infrarouge.
PCT/DE1996/001680 1995-09-29 1996-09-06 Emetteur d'infrarouges WO1997013281A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995136451 DE19536451A1 (de) 1995-09-29 1995-09-29 Infrarotsender
DE19536451.1 1995-09-29

Publications (1)

Publication Number Publication Date
WO1997013281A1 true WO1997013281A1 (fr) 1997-04-10

Family

ID=7773659

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/001680 WO1997013281A1 (fr) 1995-09-29 1996-09-06 Emetteur d'infrarouges

Country Status (2)

Country Link
DE (1) DE19536451A1 (fr)
WO (1) WO1997013281A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057666A1 (de) * 2000-11-21 2002-06-06 Stn Atlas Elektronik Gmbh Lasersender
GB2400905A (en) 2003-04-24 2004-10-27 Memco Ltd Edge device for a powered door with infra-red and visible elements
DE102005034166A1 (de) 2005-07-21 2007-02-01 Osram Opto Semiconductors Gmbh Gehäuse für ein elektromagnetische Strahlung emittierendes optoelektronisches Bauelement, elektromagnetische Strahlung emittierendes Bauelement und Verfahren zum Herstellen eines Gehäuses oder eines Bauelements

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124335A1 (de) * 1981-06-20 1983-01-05 Martin Dr.med. 7300 Esslingen Heckel Bestrahlungsvorrichtung insbesondere zur infrarotbestrahlung
EP0400175A1 (fr) * 1989-05-31 1990-12-05 Siemens Aktiengesellschaft Elément optique fixable sur une surface
EP0580905A1 (fr) * 1992-07-28 1994-02-02 BRITISH TELECOMMUNICATIONS public limited company Dispositif de rayonnement optique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124335A1 (de) * 1981-06-20 1983-01-05 Martin Dr.med. 7300 Esslingen Heckel Bestrahlungsvorrichtung insbesondere zur infrarotbestrahlung
EP0400175A1 (fr) * 1989-05-31 1990-12-05 Siemens Aktiengesellschaft Elément optique fixable sur une surface
EP0580905A1 (fr) * 1992-07-28 1994-02-02 BRITISH TELECOMMUNICATIONS public limited company Dispositif de rayonnement optique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"MINIATURE SURFACE MOUNT LEDS", ELECTRONIC PACKAGING AND PRODUCTION, vol. 32, no. 8, 1 August 1992 (1992-08-01), pages 77, XP000297133 *
MULLER W: "Lichtemitter-Anzeigebauelemente in Reflektortechnik", RADIO FERNSEHEN ELEKTRONIK, 1982, EAST GERMANY, vol. 31, no. 1, ISSN 0033-7900, pages 24 - 26, XP002024687 *

Also Published As

Publication number Publication date
DE19536451A1 (de) 1997-04-10

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