JPS5456388A - Photo sensor - Google Patents

Photo sensor

Info

Publication number
JPS5456388A
JPS5456388A JP12236077A JP12236077A JPS5456388A JP S5456388 A JPS5456388 A JP S5456388A JP 12236077 A JP12236077 A JP 12236077A JP 12236077 A JP12236077 A JP 12236077A JP S5456388 A JPS5456388 A JP S5456388A
Authority
JP
Japan
Prior art keywords
thru
light incident
disposed
photo
light
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
JP12236077A
Other languages
Japanese (ja)
Inventor
Yutaka Yoneda
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12236077A priority Critical patent/JPS5456388A/en
Publication of JPS5456388A publication Critical patent/JPS5456388A/en
Pending legal-status Critical Current

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  • Light Receiving Elements (AREA)

Abstract

PURPOSE: To compensate sensitivity differences without depending upon electrical circuit means by so providing filters as to compensate the sensitivity differences amogh light receiving parts within the light incident paths to a plurality of mutually parallel disposed light receiving parts.
CONSTITUTION: Light incident ports 3a, 3b, 3c are formed at the front of a light shield case 1 which forms plural mutually optically isolated light incident chambers 2a, 2b, 2c, and photo detectors 4a, 4b, 4c consisting of, e.g., photo diodes, photo transistors or CdSs are disposed near the rear face of the respective chambers. Filters 5a, 5b, 5c consisting of colored glass, synthetic resins or cellophane paper are disposed between the respective elements 4a thru 4c and incident ports 3a thru 3c, by which the differences in the sensitivities of the respective elements 4a thru 4c are adjusted and the electric ouputs of an equal magnitude may thus be obtained in lead wires 7a, 7b, 7c
COPYRIGHT: (C)1979,JPO&Japio
JP12236077A 1977-10-14 1977-10-14 Photo sensor Pending JPS5456388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12236077A JPS5456388A (en) 1977-10-14 1977-10-14 Photo sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12236077A JPS5456388A (en) 1977-10-14 1977-10-14 Photo sensor

Publications (1)

Publication Number Publication Date
JPS5456388A true JPS5456388A (en) 1979-05-07

Family

ID=14833957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12236077A Pending JPS5456388A (en) 1977-10-14 1977-10-14 Photo sensor

Country Status (1)

Country Link
JP (1) JPS5456388A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55161768A (en) * 1979-06-05 1980-12-16 Orenstein & Koppel Ag Escalator start*stop device
JPS583049U (en) * 1981-06-27 1983-01-10 オムロン株式会社 photo sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55161768A (en) * 1979-06-05 1980-12-16 Orenstein & Koppel Ag Escalator start*stop device
JPS583049U (en) * 1981-06-27 1983-01-10 オムロン株式会社 photo sensor

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