FR2391484A1 - Stroboscopic viewer with steady illumination - is operated by electrical pulse train rendering electron=optical shutter intermittently light transmissive - Google Patents

Stroboscopic viewer with steady illumination - is operated by electrical pulse train rendering electron=optical shutter intermittently light transmissive

Info

Publication number
FR2391484A1
FR2391484A1 FR7715051A FR7715051A FR2391484A1 FR 2391484 A1 FR2391484 A1 FR 2391484A1 FR 7715051 A FR7715051 A FR 7715051A FR 7715051 A FR7715051 A FR 7715051A FR 2391484 A1 FR2391484 A1 FR 2391484A1
Authority
FR
France
Prior art keywords
pulse train
viewer
stroboscopic
operated
light transmissive
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Withdrawn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
FR7715051A
Other languages
French (fr)
Inventor
Jean-Claude Reymond
Jean-Pierre Herriau
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7715051A priority Critical patent/FR2391484A1/en
Publication of FR2391484A1 publication Critical patent/FR2391484A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/40—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/055—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect the active material being a ceramic
    • G02F1/0556—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect the active material being a ceramic specially adapted for a particular application

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

A stroboscopic viewer is used. In order to monitor a flashing light or periodic phenomena (A), an electronic aperture device (3) is operated by a pulse train from a control unit (1). The pulse train (S1) has a frequency which may be varied by use of a control (2). Upper energy levels of the pulse train render this aperture (3) light transmissive while lower energy levels render it opaque. This affords a strobing effect to a viewer (B) in a viewing angle (W) enabling frequency/phase determination of the phenomena.
FR7715051A 1977-05-17 1977-05-17 Stroboscopic viewer with steady illumination - is operated by electrical pulse train rendering electron=optical shutter intermittently light transmissive Withdrawn FR2391484A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7715051A FR2391484A1 (en) 1977-05-17 1977-05-17 Stroboscopic viewer with steady illumination - is operated by electrical pulse train rendering electron=optical shutter intermittently light transmissive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7715051A FR2391484A1 (en) 1977-05-17 1977-05-17 Stroboscopic viewer with steady illumination - is operated by electrical pulse train rendering electron=optical shutter intermittently light transmissive

Publications (1)

Publication Number Publication Date
FR2391484A1 true FR2391484A1 (en) 1978-12-15

Family

ID=9190902

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715051A Withdrawn FR2391484A1 (en) 1977-05-17 1977-05-17 Stroboscopic viewer with steady illumination - is operated by electrical pulse train rendering electron=optical shutter intermittently light transmissive

Country Status (1)

Country Link
FR (1) FR2391484A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041765A1 (en) * 1980-06-11 1981-12-16 Union Carbide Corporation Method and apparatus for detecting optical signals under ambient light conditions
WO2007082758A2 (en) * 2006-01-21 2007-07-26 Alexander Von Gencsy Layer system having a stroboscopic effect
EP2169462A2 (en) * 2008-09-29 2010-03-31 Salomo Mutonen Shutter-based stroboscope

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689156A (en) * 1969-11-12 1972-09-05 Ocean Metrics Inc Range gated image systems using pulsed illuminators
FR2132598A1 (en) * 1971-04-09 1972-11-24 Rouget Jean Claude
FR2162078A1 (en) * 1971-12-01 1973-07-13 Atomic Energy Commission
FR2316613A1 (en) * 1975-07-03 1977-01-28 Battelle Memorial Institute ELECTRO-OPTICAL MODULATION DEVICE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689156A (en) * 1969-11-12 1972-09-05 Ocean Metrics Inc Range gated image systems using pulsed illuminators
FR2132598A1 (en) * 1971-04-09 1972-11-24 Rouget Jean Claude
FR2162078A1 (en) * 1971-12-01 1973-07-13 Atomic Energy Commission
FR2316613A1 (en) * 1975-07-03 1977-01-28 Battelle Memorial Institute ELECTRO-OPTICAL MODULATION DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV2045/76 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041765A1 (en) * 1980-06-11 1981-12-16 Union Carbide Corporation Method and apparatus for detecting optical signals under ambient light conditions
WO2007082758A2 (en) * 2006-01-21 2007-07-26 Alexander Von Gencsy Layer system having a stroboscopic effect
WO2007082758A3 (en) * 2006-01-21 2007-09-07 Gencsy Alexander Von Layer system having a stroboscopic effect
DE202007019639U1 (en) 2006-01-21 2014-10-06 Alexander von Gencsy Visual system with stroboscopic effect
EP2169462A2 (en) * 2008-09-29 2010-03-31 Salomo Mutonen Shutter-based stroboscope
EP2169462A3 (en) * 2008-09-29 2011-11-30 Salomo Murtonen Shutter-based stroboscope

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Legal Events

Date Code Title Description
ST Notification of lapse