FR2364600A7 - Modulated light pulse generator - has apertured shutter disc rotating between light source and phototransistor - Google Patents

Modulated light pulse generator - has apertured shutter disc rotating between light source and phototransistor

Info

Publication number
FR2364600A7
FR2364600A7 FR7627281A FR7627281A FR2364600A7 FR 2364600 A7 FR2364600 A7 FR 2364600A7 FR 7627281 A FR7627281 A FR 7627281A FR 7627281 A FR7627281 A FR 7627281A FR 2364600 A7 FR2364600 A7 FR 2364600A7
Authority
FR
France
Prior art keywords
light source
phototransistor
shutter disc
pulse generator
voltage
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
FR7627281A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7627281A priority Critical patent/FR2364600A7/en
Application granted granted Critical
Publication of FR2364600A7 publication Critical patent/FR2364600A7/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Transform (AREA)

Abstract

The modulated light pulse generator uses a light source connected to DC voltage and an apertured shutter disc rotated in front of the light source. The shutter disc is rotated via an AC electric motor having a dipolar stator magnetic circuit with an induction winding. The supply voltage for the light source is obtained from a supply coil around the magnetic circuit and by a rectifier bridge receiving the voltage induced in this coil as result of the magnetic flux. The modulated light pulses may fall on a phototransistor (40) supplied from the same DC voltage and providing a corresponding electrical pulse signal.
FR7627281A 1976-09-10 1976-09-10 Modulated light pulse generator - has apertured shutter disc rotating between light source and phototransistor Expired FR2364600A7 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7627281A FR2364600A7 (en) 1976-09-10 1976-09-10 Modulated light pulse generator - has apertured shutter disc rotating between light source and phototransistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7627281A FR2364600A7 (en) 1976-09-10 1976-09-10 Modulated light pulse generator - has apertured shutter disc rotating between light source and phototransistor

Publications (1)

Publication Number Publication Date
FR2364600A7 true FR2364600A7 (en) 1978-04-07

Family

ID=9177573

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627281A Expired FR2364600A7 (en) 1976-09-10 1976-09-10 Modulated light pulse generator - has apertured shutter disc rotating between light source and phototransistor

Country Status (1)

Country Link
FR (1) FR2364600A7 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse