JPS5613642A - Television projector - Google Patents

Television projector

Info

Publication number
JPS5613642A
JPS5613642A JP8933679A JP8933679A JPS5613642A JP S5613642 A JPS5613642 A JP S5613642A JP 8933679 A JP8933679 A JP 8933679A JP 8933679 A JP8933679 A JP 8933679A JP S5613642 A JPS5613642 A JP S5613642A
Authority
JP
Japan
Prior art keywords
magnetic field
distribution
crt
screen
trapezoidal distortion
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
JP8933679A
Other languages
Japanese (ja)
Inventor
Shiyuuzou Matsumoto
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 JP8933679A priority Critical patent/JPS5613642A/en
Publication of JPS5613642A publication Critical patent/JPS5613642A/en
Pending 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]

Abstract

PURPOSE:To eliminate trapezoidal distortion caused by a deviation of projected light axle consisting of CRT and a lens from verticality to screen by attaching a deflecting york having nonuniform distribution of magnetic field to CRT. CONSTITUTION:At CRT10R and CRT10B, the distribution of deflected magnetic field at a right angle to the direction of deviated angles thetaR' and thetaB' of the central axle line of electron beam is adjusted into a barrel form, and also the length of the deflected magnetic field distribution in the same direction as the deviated angles thetaR' and thetaB' is made equal to or shorter than that of the vertically deflected magnetic field distribution. Thus, bow-shaped distortion can be eliminated and a trapezoidal distortion countervailing the trapezoidal distortion on the screen 4 can be formed on the CRT screen.
JP8933679A 1979-07-16 1979-07-16 Television projector Pending JPS5613642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8933679A JPS5613642A (en) 1979-07-16 1979-07-16 Television projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8933679A JPS5613642A (en) 1979-07-16 1979-07-16 Television projector

Publications (1)

Publication Number Publication Date
JPS5613642A true JPS5613642A (en) 1981-02-10

Family

ID=13967838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8933679A Pending JPS5613642A (en) 1979-07-16 1979-07-16 Television projector

Country Status (1)

Country Link
JP (1) JPS5613642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581954A (en) * 1981-06-26 1983-01-07 Hitachi Ltd Deflecting yoke for projection television

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581954A (en) * 1981-06-26 1983-01-07 Hitachi Ltd Deflecting yoke for projection television
JPH057815B2 (en) * 1981-06-26 1993-01-29 Hitachi Ltd

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