JPS5677776A - Photoelectric detecting device - Google Patents

Photoelectric detecting device

Info

Publication number
JPS5677776A
JPS5677776A JP15798680A JP15798680A JPS5677776A JP S5677776 A JPS5677776 A JP S5677776A JP 15798680 A JP15798680 A JP 15798680A JP 15798680 A JP15798680 A JP 15798680A JP S5677776 A JPS5677776 A JP S5677776A
Authority
JP
Japan
Prior art keywords
image
lens
plate
coincidence
beams
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.)
Pending
Application number
JP15798680A
Other languages
Japanese (ja)
Inventor
Shunei Samejima
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.)
Seikosha KK
Original Assignee
Seikosha KK
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 Seikosha KK filed Critical Seikosha KK
Priority to JP15798680A priority Critical patent/JPS5677776A/en
Publication of JPS5677776A publication Critical patent/JPS5677776A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To facilitate both the radiation of beams and coincidence of the optical axes in a receiving device, by forming an image by the optical system and then detecting assuredly the process of the image formation with a photosensitive element.
CONSTITUTION: The lens 4 is mounted inside the cylinder part 3 extended from one side face of the detecting box 2, and the image receiving plate 5 is provided at the position where the real image is formed through the lens 4 inside the box 2. The phototrasnsistor 6 is fixed to the image forming surface of the plate 5 with the light receiving surface turned to the lens 4, and the output of the phototransistor 6 is connected to the measuring circuit 7 of the pulse shaping, the counter and the like. The transistor 6 is usually turned on. Now when the runner A comes near the pass detection lines B, the image is formed on the plate 5 as shown by the dotted lines. Then the image shown by the solid lines is formed at the line B. In this instant, the luminous intensity to the transistor 6 is lowered, and thus the passing of the image is detected through the circuit 7. As a result, both the radiation of beams and coincidence of optical axes in the receiving device is faciliated.
COPYRIGHT: (C)1981,JPO&Japio
JP15798680A 1980-11-10 1980-11-10 Photoelectric detecting device Pending JPS5677776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15798680A JPS5677776A (en) 1980-11-10 1980-11-10 Photoelectric detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15798680A JPS5677776A (en) 1980-11-10 1980-11-10 Photoelectric detecting device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49093079A Division JPS5121177A (en) 1974-08-14 1974-08-14

Publications (1)

Publication Number Publication Date
JPS5677776A true JPS5677776A (en) 1981-06-26

Family

ID=15661737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15798680A Pending JPS5677776A (en) 1980-11-10 1980-11-10 Photoelectric detecting device

Country Status (1)

Country Link
JP (1) JPS5677776A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5899781A (en) * 1981-11-20 1983-06-14 Horiba Ltd Detecting device for moving object
US4887583A (en) * 1988-06-16 1989-12-19 Lin Hsien Chang Braking device for safety toy-gun

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974853A (en) * 1972-10-16 1974-07-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974853A (en) * 1972-10-16 1974-07-19

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5899781A (en) * 1981-11-20 1983-06-14 Horiba Ltd Detecting device for moving object
JPH0262836B2 (en) * 1981-11-20 1990-12-26 Horiba Ltd
US4887583A (en) * 1988-06-16 1989-12-19 Lin Hsien Chang Braking device for safety toy-gun

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