JPS56122173A - Photoelectric switch - Google Patents

Photoelectric switch

Info

Publication number
JPS56122173A
JPS56122173A JP2547780A JP2547780A JPS56122173A JP S56122173 A JPS56122173 A JP S56122173A JP 2547780 A JP2547780 A JP 2547780A JP 2547780 A JP2547780 A JP 2547780A JP S56122173 A JPS56122173 A JP S56122173A
Authority
JP
Japan
Prior art keywords
light
mirror
infinitesimal
ratio
surface pattern
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
JP2547780A
Other languages
Japanese (ja)
Inventor
Fumiaki Sai
Seiji Oku
Ichiro Higuchi
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP2547780A priority Critical patent/JPS56122173A/en
Publication of JPS56122173A publication Critical patent/JPS56122173A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)

Abstract

PURPOSE:To enable to detect any of a light in transmitting and reflecting directions under the same detecting condition by using a translucent mirror having an optimum ratio of area of the light transmitting part to the light reflecting part by arranging an infinitesimal mirror-surface pattern in high density on a transparent plate. CONSTITUTION:A translucent mirror 4 is disposed at the intersection between a light projecting axis and a light receiving axis. The mirror 4 is constructed by forming an infinitesimal mirror surface pattern 42 in high density on one surface of a transparent plate 41, and the density of the pattern is so formed highly that the reflected light from an infinitesimal article to be detected can efficiently transmit or reflect. When the ratio of the length of one side of to the interval of the square mirror surface pattern 42 is set properly so that the ratio of the area of the light transmitting part to the light reflecting part is appromximately 16:9, the amount of transmitted light and the amount of reflected light become approximately 1:1, and the same characteristics and performance can be provided even in case of both two optical paths formed in both the light transmitting and the light reflecting directions of the translucent mirror.
JP2547780A 1980-02-29 1980-02-29 Photoelectric switch Pending JPS56122173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2547780A JPS56122173A (en) 1980-02-29 1980-02-29 Photoelectric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2547780A JPS56122173A (en) 1980-02-29 1980-02-29 Photoelectric switch

Publications (1)

Publication Number Publication Date
JPS56122173A true JPS56122173A (en) 1981-09-25

Family

ID=12167119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2547780A Pending JPS56122173A (en) 1980-02-29 1980-02-29 Photoelectric switch

Country Status (1)

Country Link
JP (1) JPS56122173A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003060458A1 (en) * 2002-01-17 2003-07-24 Agilent Technologies, Inc. Determination of optical properties of a device under test in both directions in transmission and in reflection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003060458A1 (en) * 2002-01-17 2003-07-24 Agilent Technologies, Inc. Determination of optical properties of a device under test in both directions in transmission and in reflection

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