JPS5679372A - Optical read element - Google Patents

Optical read element

Info

Publication number
JPS5679372A
JPS5679372A JP15562279A JP15562279A JPS5679372A JP S5679372 A JPS5679372 A JP S5679372A JP 15562279 A JP15562279 A JP 15562279A JP 15562279 A JP15562279 A JP 15562279A JP S5679372 A JPS5679372 A JP S5679372A
Authority
JP
Japan
Prior art keywords
photodetecting
photodetectors
parts
light beam
partial
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
JP15562279A
Other languages
Japanese (ja)
Inventor
Hideo Segawa
Koichi Sakurai
Koji Mori
Masakuni Itagaki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP15562279A priority Critical patent/JPS5679372A/en
Publication of JPS5679372A publication Critical patent/JPS5679372A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain a real size type color optical read element at low cost, by arraying a lot of photodetectors on the substrate, dividing the respective photodetectors into three, and providing green, blue and red filters on the surface of the partial photodetecting parts.
CONSTITUTION: A lot of thin film photodetectors 2 having the photoconductivity corresponding to one picture element are arrayed on the substrate 1, and these detectors 2 are divided into three partial photodetecting parts 2a, 2b, 2c, respectively. As for these partial photodetecting parts, the fitters which selectively transmit a green light beam, a blue light beam and a red light beam are provided on the photodetecting surface of the photodetecting part 2a, the photodetecting surface of the photodetecting part 2b, and the photodetecting surface of the photodetecting part 2c. The photodetecting parts 2aW2c of the photodetectors which have been constituted in this way are made to have the characteristic of a photodiode, and after that, when voltage is applied to the photodetectors in the reverse bias direction, the respective thin film photodetecting parts are charged with electricity. When a light beam is irradiated to the photodetecting parts which have been charged with electricity, the respective photodetecting parts discharge electricity depending on the quantity of light. When they are charged again, a charging current corresponding to the amount of discharge flows, and a three color signal are output by outputting a signal by the charging current at this time.
COPYRIGHT: (C)1981,JPO&Japio
JP15562279A 1979-12-03 1979-12-03 Optical read element Pending JPS5679372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15562279A JPS5679372A (en) 1979-12-03 1979-12-03 Optical read element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15562279A JPS5679372A (en) 1979-12-03 1979-12-03 Optical read element

Publications (1)

Publication Number Publication Date
JPS5679372A true JPS5679372A (en) 1981-06-29

Family

ID=15610022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15562279A Pending JPS5679372A (en) 1979-12-03 1979-12-03 Optical read element

Country Status (1)

Country Link
JP (1) JPS5679372A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61148956A (en) * 1984-12-22 1986-07-07 Seiko Epson Corp Read circuit of plural sensor signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54116821A (en) * 1978-03-03 1979-09-11 Hitachi Ltd Photo detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54116821A (en) * 1978-03-03 1979-09-11 Hitachi Ltd Photo detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61148956A (en) * 1984-12-22 1986-07-07 Seiko Epson Corp Read circuit of plural sensor signals

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