JPS57211871A - Image reader - Google Patents

Image reader

Info

Publication number
JPS57211871A
JPS57211871A JP9728181A JP9728181A JPS57211871A JP S57211871 A JPS57211871 A JP S57211871A JP 9728181 A JP9728181 A JP 9728181A JP 9728181 A JP9728181 A JP 9728181A JP S57211871 A JPS57211871 A JP S57211871A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
filter
line sensor
blue
green
red
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
JP9728181A
Inventor
Kakuji Kunii
Original Assignee
Sony Corp
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46Colour picture communication systems
    • H04N1/48Picture signal generators
    • H04N1/482Picture signal generators using the same detector device sequentially for different colour components

Abstract

PURPOSE:To make output characteristics for respective primary colors of a line sensor coincide with each other by selecting the range of color filters for making respective primary colors transmit according to the spectral sensitivity of respective primary colors of the line sensor. CONSTITUTION:The filter ranges (divided ranges of respective color filters, red, green, blue) of a color filter 20 applied on the front of a line sensor 10 is changed according to the spectral sensitivity. The disc-like color filter 20 is constituted so as to be rotated and the ranges of a red filter 20R, a green filter 20G and a blue filter 20B are approximately set to the rate of 1:1:2. Consequently the output level of the line sensor for blue can be increased twice without sharp increase of the output levels for red and green, improving remarkable unevenness of output characteristics.
JP9728181A 1981-06-23 1981-06-23 Image reader Pending JPS57211871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9728181A JPS57211871A (en) 1981-06-23 1981-06-23 Image reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9728181A JPS57211871A (en) 1981-06-23 1981-06-23 Image reader

Publications (1)

Publication Number Publication Date
JPS57211871A true true JPS57211871A (en) 1982-12-25

Family

ID=14188123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9728181A Pending JPS57211871A (en) 1981-06-23 1981-06-23 Image reader

Country Status (1)

Country Link
JP (1) JPS57211871A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62235887A (en) * 1986-04-07 1987-10-16 Nippon Denso Co Ltd Color night vision device
US4731661A (en) * 1984-11-16 1988-03-15 Sharp Kabushiki Kaisha Color document reader with white balance adjuster for determining light emission periods for a plurality of different-colored light sources and corresponding integration times for a light sensor by reading a white reference area
US4809062A (en) * 1984-11-14 1989-02-28 Microtek Lab., Inc. Optical color line scanning and imaging device having a roller drive
EP0324107A2 (en) * 1988-01-09 1989-07-19 Robert Bosch Gmbh Colour-television camera
JPH0289463A (en) * 1988-09-27 1990-03-29 Nec Home Electron Ltd Color filter
US4937663A (en) * 1987-09-08 1990-06-26 Truvel Corporation Apparatus for scanning and recording a color image having a scanning element with scanning periods equal to the reciprocal of the flicker rate of a light source illuminating the color image and a rotating multi-segment color filter
US5177501A (en) * 1989-11-13 1993-01-05 Alcatel N.V. Electrooptical recording device
EP0615146A3 (en) * 1993-03-03 1995-01-04 Texas Instruments Inc Monolithic color wheel.
FR2708734A1 (en) * 1993-07-31 1995-02-10 Samsung Electronics Co Ltd Image analyzer.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809062A (en) * 1984-11-14 1989-02-28 Microtek Lab., Inc. Optical color line scanning and imaging device having a roller drive
US4731661A (en) * 1984-11-16 1988-03-15 Sharp Kabushiki Kaisha Color document reader with white balance adjuster for determining light emission periods for a plurality of different-colored light sources and corresponding integration times for a light sensor by reading a white reference area
JPS62235887A (en) * 1986-04-07 1987-10-16 Nippon Denso Co Ltd Color night vision device
US4937663A (en) * 1987-09-08 1990-06-26 Truvel Corporation Apparatus for scanning and recording a color image having a scanning element with scanning periods equal to the reciprocal of the flicker rate of a light source illuminating the color image and a rotating multi-segment color filter
EP0324107A2 (en) * 1988-01-09 1989-07-19 Robert Bosch Gmbh Colour-television camera
JPH0289463A (en) * 1988-09-27 1990-03-29 Nec Home Electron Ltd Color filter
US5177501A (en) * 1989-11-13 1993-01-05 Alcatel N.V. Electrooptical recording device
EP0615146A3 (en) * 1993-03-03 1995-01-04 Texas Instruments Inc Monolithic color wheel.
FR2708734A1 (en) * 1993-07-31 1995-02-10 Samsung Electronics Co Ltd Image analyzer.

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