FR2390870A1 - PROJECTION DEVICE - Google Patents

PROJECTION DEVICE

Info

Publication number
FR2390870A1
FR2390870A1 FR7813721A FR7813721A FR2390870A1 FR 2390870 A1 FR2390870 A1 FR 2390870A1 FR 7813721 A FR7813721 A FR 7813721A FR 7813721 A FR7813721 A FR 7813721A FR 2390870 A1 FR2390870 A1 FR 2390870A1
Authority
FR
France
Prior art keywords
screen
several
images
focusing means
axes
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
FR7813721A
Other languages
French (fr)
Other versions
FR2390870B1 (en
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
Publication of FR2390870A1 publication Critical patent/FR2390870A1/en
Application granted granted Critical
Publication of FR2390870B1 publication Critical patent/FR2390870B1/fr
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)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

a. Appareil de projection composé d'un écran sur lequel sont projetées plusieurs images destinées à être combinées, plusieurs sources d'images et plusieurs moyens de focalisation pour projeter les images respectives sur l'écran et former une image composée. b. Appareil caractérisé en ce que les axes principaux des moyens de focalisation sont essentiellement parallèles l'un à l'autre et au moins l'un des axes des diverses sources-images est décalé par rapport à l'axe principal correspondant de façon que les images projetées coïncident l'une avec l'autre sur l'écran.at. Projection apparatus composed of a screen on which are projected several images intended to be combined, several image sources and several focusing means for projecting the respective images on the screen and forming a composite image. b. Apparatus characterized in that the main axes of the focusing means are substantially parallel to each other and at least one of the axes of the various image sources is offset from the corresponding main axis so that the images projections coincide with each other on the screen.

FR7813721A 1977-05-09 1978-05-09 PROJECTION DEVICE Granted FR2390870A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5288377A JPS53138326A (en) 1977-05-09 1977-05-09 Projector

Publications (2)

Publication Number Publication Date
FR2390870A1 true FR2390870A1 (en) 1978-12-08
FR2390870B1 FR2390870B1 (en) 1983-11-18

Family

ID=12927269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7813721A Granted FR2390870A1 (en) 1977-05-09 1978-05-09 PROJECTION DEVICE

Country Status (7)

Country Link
JP (1) JPS53138326A (en)
AU (1) AU525507B2 (en)
CA (1) CA1099547A (en)
DE (1) DE2820175A1 (en)
FR (1) FR2390870A1 (en)
GB (1) GB1595610A (en)
NL (1) NL7804924A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063252A1 (en) * 1981-03-30 1982-10-27 Nishiyama Shoji Stereofluoroscopic apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62160437A (en) * 1986-01-08 1987-07-16 Kawasaki Heavy Ind Ltd Superposing method for projection image

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304236A1 (en) * 1975-03-12 1976-10-08 Sony Corp THREE CATHODIC TUBE COLOR IMAGE PROJECTION UNIT

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1235344A (en) * 1968-12-10 1971-06-09 Harries Electronic Corp Improvements relating to optical correction systems
JPS5271944A (en) * 1975-12-11 1977-06-15 Sanyo Electric Co Ltd Projection-type color tv unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304236A1 (en) * 1975-03-12 1976-10-08 Sony Corp THREE CATHODIC TUBE COLOR IMAGE PROJECTION UNIT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063252A1 (en) * 1981-03-30 1982-10-27 Nishiyama Shoji Stereofluoroscopic apparatus

Also Published As

Publication number Publication date
AU3567078A (en) 1979-11-08
GB1595610A (en) 1981-08-12
DE2820175A1 (en) 1978-11-23
FR2390870B1 (en) 1983-11-18
CA1099547A (en) 1981-04-21
AU525507B2 (en) 1982-11-11
JPS53138326A (en) 1978-12-02
DE2820175C2 (en) 1987-12-03
NL7804924A (en) 1978-11-13

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Legal Events

Date Code Title Description
ST Notification of lapse