CA1105301A - Video projecting apparatus - Google Patents

Video projecting apparatus

Info

Publication number
CA1105301A
CA1105301A CA309,838A CA309838A CA1105301A CA 1105301 A CA1105301 A CA 1105301A CA 309838 A CA309838 A CA 309838A CA 1105301 A CA1105301 A CA 1105301A
Authority
CA
Canada
Prior art keywords
screen
image
color image
axes
focusing means
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.)
Expired
Application number
CA309,838A
Other languages
English (en)
French (fr)
Inventor
Masayuki Ohmori
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.)
Sony Corp
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
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of CA1105301A publication Critical patent/CA1105301A/en
Expired 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
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/28—Arrangements for convergence or focusing
    • 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)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
CA309,838A 1977-08-25 1978-08-22 Video projecting apparatus Expired CA1105301A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10187077A JPS5435623A (en) 1977-08-25 1977-08-25 Video projector
JP101870/77 1977-08-25

Publications (1)

Publication Number Publication Date
CA1105301A true CA1105301A (en) 1981-07-21

Family

ID=14312010

Family Applications (1)

Application Number Title Priority Date Filing Date
CA309,838A Expired CA1105301A (en) 1977-08-25 1978-08-22 Video projecting apparatus

Country Status (8)

Country Link
US (1) US4194216A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5435623A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU523553B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1105301A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2837249C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2401576B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2004083B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7808707A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642225A (en) * 1979-09-14 1981-04-20 Fuji Xerox Co Ltd Original for oblique projection and its making device
US4274110A (en) 1980-01-08 1981-06-16 Zenith Radio Corporation Projection television system
US4415348A (en) * 1980-05-29 1983-11-15 Zenith Radio Corporation Method of manufacture for projection television system
US4376949A (en) * 1981-06-11 1983-03-15 Zenith Radio Corporation Color projection TV systems
JPH0759092B2 (ja) * 1985-08-06 1995-06-21 パイオニア株式会社 投写型テレビジヨン
KR970006880Y1 (ko) * 1993-12-13 1997-07-09 엘지전자 주식회사 투사형 장치
US6305805B1 (en) 1998-12-17 2001-10-23 Gateway, Inc. System, method and software for correcting keystoning of a projected image

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA939540A (en) * 1970-03-09 1974-01-08 Rca Corporation Optical system for orthogonalizing image field of projection lens
JPS5271944A (en) * 1975-12-11 1977-06-15 Sanyo Electric Co Ltd Projection-type color tv unit
US4210928A (en) * 1977-05-09 1980-07-01 Sony Corporation Projecting apparatus

Also Published As

Publication number Publication date
DE2837249C2 (de) 1986-11-13
US4194216A (en) 1980-03-18
AU3918078A (en) 1980-02-28
JPS5435623A (en) 1979-03-15
GB2004083A (en) 1979-03-21
FR2401576A1 (fr) 1979-03-23
DE2837249A1 (de) 1979-03-01
AU523553B2 (en) 1982-08-05
GB2004083B (en) 1982-02-10
NL7808707A (nl) 1979-02-27
JPS617074B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-03-04
FR2401576B1 (fr) 1985-07-26

Similar Documents

Publication Publication Date Title
US6839181B1 (en) Display apparatus
US2792740A (en) Multi-path optical systems
EP0051977B1 (en) Rear projection apparatus
US5200857A (en) Color separation/synthetic optical system including two dichroic mirrors angled for correction of astigmatism
US3637308A (en) Color correction of prismatic off-axis optical system
US3704936A (en) Achromatic depth-of-field correction for off-axis optical system
US6715889B2 (en) Projection type display apparatus
CA1105301A (en) Video projecting apparatus
US4730211A (en) Projection-type color television receiver wherein the center lines of right and left projection lenses intersect a display screen at points which are offset from a point at which the center line of a center projection lens intersects the display screen
US6590714B2 (en) Color combining optical system and projection type display apparatus having the same
US4376949A (en) Color projection TV systems
US2797256A (en) Dichroic reflector optical system
US2999126A (en) Facetted correction lens for minimizing keystoning of off-axis projectors
US4210928A (en) Projecting apparatus
US4051513A (en) Color image projecting apparatus
US3582984A (en) Color video signal generating apparatus
KR970006880Y1 (ko) 투사형 장치
US3495511A (en) Heterogeneous lens for forming phosphor patterns on color kinescope
US5293226A (en) Three tube color television projection display device
JP2580285B2 (ja) ３管式プロジェクションテレビ
US4563699A (en) Television receiver or projection type
JPS57179807A (en) Optical system of color television
US4210929A (en) Video projecting apparatus with raster distortion correction
US2848533A (en) Color-image-reproducing apparatus of the projection type
JPH08327964A (ja) 投写型画像表示装置

Legal Events

Date Code Title Description
MKEX Expiry