FR2390870A1 - PROJECTION DEVICE - Google Patents
PROJECTION DEVICEInfo
- 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
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.
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)
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)
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)
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)
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 |
-
1977
- 1977-05-09 JP JP5288377A patent/JPS53138326A/en active Pending
-
1978
- 1978-05-02 AU AU35670/78A patent/AU525507B2/en not_active Expired
- 1978-05-03 GB GB1743978A patent/GB1595610A/en not_active Expired
- 1978-05-04 CA CA302,615A patent/CA1099547A/en not_active Expired
- 1978-05-08 NL NL7804924A patent/NL7804924A/en not_active Application Discontinuation
- 1978-05-09 FR FR7813721A patent/FR2390870A1/en active Granted
- 1978-05-09 DE DE19782820175 patent/DE2820175A1/en active Granted
Patent Citations (1)
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)
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 |
---|---|
JPS53138326A (en) | 1978-12-02 |
AU525507B2 (en) | 1982-11-11 |
AU3567078A (en) | 1979-11-08 |
CA1099547A (en) | 1981-04-21 |
NL7804924A (en) | 1978-11-13 |
FR2390870B1 (en) | 1983-11-18 |
DE2820175A1 (en) | 1978-11-23 |
DE2820175C2 (en) | 1987-12-03 |
GB1595610A (en) | 1981-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |