EP1203243A1 - Dispositif de barriere lumineuse a separateur de faisceau - Google Patents

Dispositif de barriere lumineuse a separateur de faisceau

Info

Publication number
EP1203243A1
EP1203243A1 EP00951430A EP00951430A EP1203243A1 EP 1203243 A1 EP1203243 A1 EP 1203243A1 EP 00951430 A EP00951430 A EP 00951430A EP 00951430 A EP00951430 A EP 00951430A EP 1203243 A1 EP1203243 A1 EP 1203243A1
Authority
EP
European Patent Office
Prior art keywords
light barrier
barrier arrangement
arrangement according
beam splitter
plate
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.)
Withdrawn
Application number
EP00951430A
Other languages
German (de)
English (en)
Inventor
Hans-Erich Gubela, Jr.
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.)
IMOS Gubela GmbH
Original Assignee
IMOS Gubela GmbH
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
Priority claimed from DE1999137353 external-priority patent/DE19937353A1/de
Priority claimed from DE2000119924 external-priority patent/DE10019924A1/de
Application filed by IMOS Gubela GmbH filed Critical IMOS Gubela GmbH
Publication of EP1203243A1 publication Critical patent/EP1203243A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/143—Beam splitting or combining systems operating by reflection only using macroscopically faceted or segmented reflective surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
    • G02B19/0057—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode in the form of a laser diode array, e.g. laser diode bar
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1086—Beam splitting or combining systems operating by diffraction only
    • G02B27/1093—Beam splitting or combining systems operating by diffraction only for use with monochromatic radiation only, e.g. devices for splitting a single laser source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1847—Manufacturing methods
    • G02B5/1852—Manufacturing methods using mechanical means, e.g. ruling with diamond tool, moulding
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials

Definitions

  • the beam splitter 16, 16 ′ consists of a plate-shaped transparent substrate with a refractive index that is higher than air, preferably greater than 1, 3, one broad side surface 18 of which is flat and smooth, while the second broad side surface 20 has a prismatic stripe or line structure 22.
  • the substrate of the beam splitter 16 on the back of the radiation 20 is mirrored in the region of the stripe structure, while the substrate of the beam splitter 16 'according to FIG. 2 is not mirrored on the back of the radiation.
  • the individual strips 24 of the strip structure 22 are either triangular in cross section (FIGS. 3a and b), wavy (FIG.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

La présente invention concerne un dispositif de barrière lumineuse comprenant au moins une source de lumière (10) destinée à émettre un faisceau de rayons parallèles (12) et au moins un élément de détection (26) se trouvant sur la trajectoire du faisceau de rayons (12). L'objet de la présente invention est de réaliser un système simple et économique permettant une surveillance superficielle d'un espace. Pour cela, un séparateur de faisceau (16) se trouve sur la trajectoire du faisceau de rayons (12), ledit séparateur de faisceau permettant la séparation du faisceau de rayons (12) un champ de rayonnement (14) circulaire, plan ou courbe, et le(s) élément(s) de détection (26) est/sont orienté(s) optiquement à l'intérieur du champ de rayonnement (14) en direction du séparateur de faisceau (16).
EP00951430A 1999-08-11 2000-07-22 Dispositif de barriere lumineuse a separateur de faisceau Withdrawn EP1203243A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19937353 1999-08-11
DE1999137353 DE19937353A1 (de) 1999-08-11 1999-08-11 Lichtschrankenanordnung
DE10019924 2000-04-20
DE2000119924 DE10019924A1 (de) 2000-04-20 2000-04-20 Lichtschrankenanordnung
PCT/EP2000/007055 WO2001013144A1 (fr) 1999-08-11 2000-07-22 Dispositif de barriere lumineuse a separateur de faisceau

Publications (1)

Publication Number Publication Date
EP1203243A1 true EP1203243A1 (fr) 2002-05-08

Family

ID=26005427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951430A Withdrawn EP1203243A1 (fr) 1999-08-11 2000-07-22 Dispositif de barriere lumineuse a separateur de faisceau

Country Status (3)

Country Link
EP (1) EP1203243A1 (fr)
DE (1) DE10082412D2 (fr)
WO (1) WO2001013144A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3540475A1 (fr) * 2018-03-16 2019-09-18 Leuze electronic GmbH + Co. KG Système de détection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508366C3 (de) * 1975-02-26 1979-05-17 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optische Vorrichtung mit einem Lichtvorhang
GB1592902A (en) * 1978-01-17 1981-07-08 Rca Corp Diffractive-subtractive light filter blank
EP0007108B1 (fr) * 1978-07-18 1983-04-13 Nippon Telegraph and Telephone Public Corporation Méthode de fabrication d'une structure de réseaux de diffraction
DE3012500C2 (de) * 1980-03-31 1982-11-18 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Retroreflektor
DE3733656C1 (de) * 1987-10-05 1989-02-02 Hoermann Kg Reflexionslichtschranke
US5113067A (en) * 1989-02-15 1992-05-12 Canon Kabushiki Kaisha Image reading apparatus having a blazed diffraction grating
DE4029766A1 (de) * 1990-09-20 1992-04-02 Leuze Electronic Gmbh & Co Reflexionslichtschranke
JPH07234309A (ja) * 1993-12-23 1995-09-05 Xerox Corp バイナリ回折光学素子ビーム分割器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0113144A1 *

Also Published As

Publication number Publication date
WO2001013144A1 (fr) 2001-02-22
DE10082412D2 (de) 2002-07-11

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