JPS572019A - Television picture projection device - Google Patents
Television picture projection deviceInfo
- Publication number
- JPS572019A JPS572019A JP7609480A JP7609480A JPS572019A JP S572019 A JPS572019 A JP S572019A JP 7609480 A JP7609480 A JP 7609480A JP 7609480 A JP7609480 A JP 7609480A JP S572019 A JPS572019 A JP S572019A
- Authority
- JP
- Japan
- Prior art keywords
- skewness
- screen
- image
- viewer
- eyes
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
PURPOSE:To obtain a clear projection image having little skewness, by providing a reflector by which an undulation can be adjusted within the range of 45+ or -5 deg. against a picture plane, and also a movement can be adjusted against the picture plane, on the front of a picture surface of television. CONSTITUTION:Eyes 6 of a viewer are in the upper part of a vertical line 12 by an angle beta, therefore, even when a rectangular image is obtained on the surface of a screen 4, it ought to be seen as a skew image which expands in the upper side and becomes narrower in the lower side, in the direction of a viewer's eyes 13. Since there is a fixed idea that the screen 4 is a rectangle, however, it is decided that an image which is reflected in parallel in the frame of the screen 4 is an exact rectangle being free from skewness after all, therefore, said matter can be solved by correcting a skewness on the surface of the screen 4. The skewness in the direction of the viewer's eyes 13 can be removed by further inclining a plane 14 by an angle beta.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7609480A JPS607248B2 (en) | 1980-06-06 | 1980-06-06 | television image projection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7609480A JPS607248B2 (en) | 1980-06-06 | 1980-06-06 | television image projection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS572019A true JPS572019A (en) | 1982-01-07 |
JPS607248B2 JPS607248B2 (en) | 1985-02-23 |
Family
ID=13595256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7609480A Expired JPS607248B2 (en) | 1980-06-06 | 1980-06-06 | television image projection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS607248B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59500599A (en) * | 1982-04-16 | 1984-04-12 | ベルガ− マインハルト | Devices for measuring the position and/or movement of body parts |
US4557661A (en) * | 1982-09-16 | 1985-12-10 | Acf Industries, Incorporated | Robot safety mechanism |
US4655674A (en) * | 1983-09-20 | 1987-04-07 | Siemens Aktiengesellschaft | Safety device for an industrial robot |
EP0987383A1 (en) * | 1998-09-16 | 2000-03-22 | Decatron N.V. | A movie theatre construction |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6566651B2 (en) * | 2015-02-04 | 2019-08-28 | 株式会社三共 | Game machine |
-
1980
- 1980-06-06 JP JP7609480A patent/JPS607248B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59500599A (en) * | 1982-04-16 | 1984-04-12 | ベルガ− マインハルト | Devices for measuring the position and/or movement of body parts |
US4557661A (en) * | 1982-09-16 | 1985-12-10 | Acf Industries, Incorporated | Robot safety mechanism |
US4655674A (en) * | 1983-09-20 | 1987-04-07 | Siemens Aktiengesellschaft | Safety device for an industrial robot |
EP0987383A1 (en) * | 1998-09-16 | 2000-03-22 | Decatron N.V. | A movie theatre construction |
Also Published As
Publication number | Publication date |
---|---|
JPS607248B2 (en) | 1985-02-23 |
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