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JPS56129488A - Video projector - Google Patents

Video projector

Info

Publication number
JPS56129488A
JPS56129488A JP3240580A JP3240580A JPS56129488A JP S56129488 A JPS56129488 A JP S56129488A JP 3240580 A JP3240580 A JP 3240580A JP 3240580 A JP3240580 A JP 3240580A JP S56129488 A JPS56129488 A JP S56129488A
Authority
JP
Japan
Prior art keywords
green
blue
red
fluorescent substance
picture
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.)
Granted
Application number
JP3240580A
Other languages
Japanese (ja)
Other versions
JPS6248957B2 (en
Inventor
Yoshimasa Takahashi
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP3240580A priority Critical patent/JPS56129488A/en
Publication of JPS56129488A publication Critical patent/JPS56129488A/en
Publication of JPS6248957B2 publication Critical patent/JPS6248957B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To obtain the picture having high resolution, by making the reflection coating only to green or green and blue lenses among magnification lenses made of acrylate, and collectively approaching the current ratio for each fluorescent substance of red, green and blue to 1:1:1. CONSTITUTION:Among the magnification lenses LR, LG and LB made of acryl, used for cathoderay tubes TR, TG and TB having high luminance of 3 primary colors of red green and blue, reflection coating is made only for the lens LG or LG and LB. By adjusting the current of green controlling most of the brightness and resolution of picture projected on the screen S, the current ratio for each fluorescent substance of red, green and blue is collectively approached to 1:1:1, and the current density is made possibly equal, preventing the fluorescent substance from being affected by temperature, and white balance is held in time aging, allowing to obtain the picture having high resolution.
JP3240580A 1980-03-13 1980-03-13 Video projector Granted JPS56129488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3240580A JPS56129488A (en) 1980-03-13 1980-03-13 Video projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3240580A JPS56129488A (en) 1980-03-13 1980-03-13 Video projector

Publications (2)

Publication Number Publication Date
JPS56129488A true JPS56129488A (en) 1981-10-09
JPS6248957B2 JPS6248957B2 (en) 1987-10-16

Family

ID=12358037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3240580A Granted JPS56129488A (en) 1980-03-13 1980-03-13 Video projector

Country Status (1)

Country Link
JP (1) JPS56129488A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634612A1 (en) * 1988-07-22 1990-01-26 Malifaud Pierre Method for obtaining colour video pictures projected on a screen and device for implementing it
JPH02141188U (en) * 1989-04-26 1990-11-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2634612A1 (en) * 1988-07-22 1990-01-26 Malifaud Pierre Method for obtaining colour video pictures projected on a screen and device for implementing it
JPH02141188U (en) * 1989-04-26 1990-11-27

Also Published As

Publication number Publication date
JPS6248957B2 (en) 1987-10-16

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