JPS5550792A - Video projector - Google Patents

Video projector

Info

Publication number
JPS5550792A
JPS5550792A JP12262078A JP12262078A JPS5550792A JP S5550792 A JPS5550792 A JP S5550792A JP 12262078 A JP12262078 A JP 12262078A JP 12262078 A JP12262078 A JP 12262078A JP S5550792 A JPS5550792 A JP S5550792A
Authority
JP
Japan
Prior art keywords
mirror
cathode ray
screen
respect
angle
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
JP12262078A
Other languages
Japanese (ja)
Inventor
Sadao Imai
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12262078A priority Critical patent/JPS5550792A/en
Publication of JPS5550792A publication Critical patent/JPS5550792A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the stable optical focus by projecting the light scattered from the projecting tube at a fixed angle with respect to the screen from the mirror surface.
CONSTITUTION: Cathode ray tubes 11R, 11B, 11G have the center line C of the axial direction thereof disposed at an angle with respect to the horizontal line A. The mirror 13 has an upper end surface inclined at an angle of α in the opposite direction to the cathode ray tube with respect to the vertical line. The emitted light X from the cathode ray tubes 11R, 11B, 11G is refelected on the mirror 13 and projected on the screen 14. The audience 15 watches the screen 14 from the back ward of the mirror 15. In addition, the center line G from the virtual image S of the cathode ray tube due to the mirror 13 to the screen 14 has angle of elevation α+2β with respect to the horizontal line A. Accordingly, the adjustment of the focus can be carried out by approaching to or separating from the direction of the mirror 13 the cathode ray tubes 11R, 11B, 11G axially along the center line C.
COPYRIGHT: (C)1980,JPO&Japio
JP12262078A 1978-10-06 1978-10-06 Video projector Pending JPS5550792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12262078A JPS5550792A (en) 1978-10-06 1978-10-06 Video projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12262078A JPS5550792A (en) 1978-10-06 1978-10-06 Video projector

Publications (1)

Publication Number Publication Date
JPS5550792A true JPS5550792A (en) 1980-04-12

Family

ID=14840459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12262078A Pending JPS5550792A (en) 1978-10-06 1978-10-06 Video projector

Country Status (1)

Country Link
JP (1) JPS5550792A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211937A (en) * 1982-06-04 1983-12-09 Nippon Tokushu Toryo Kk Lightweight ceiling member for car
JPS58221738A (en) * 1982-06-17 1983-12-23 Nippon Tokushu Toryo Kk Soundproof ceiling material for vehicle
WO2007141933A1 (en) * 2006-06-08 2007-12-13 Panasonic Electric Works Co., Ltd. Image display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211937A (en) * 1982-06-04 1983-12-09 Nippon Tokushu Toryo Kk Lightweight ceiling member for car
JPS58221738A (en) * 1982-06-17 1983-12-23 Nippon Tokushu Toryo Kk Soundproof ceiling material for vehicle
WO2007141933A1 (en) * 2006-06-08 2007-12-13 Panasonic Electric Works Co., Ltd. Image display device
US7980702B2 (en) 2006-06-08 2011-07-19 Panasonic Electric Works Co., Ltd. Image display device

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