JPS55151615A - Projected shape image display device - Google Patents
Projected shape image display deviceInfo
- Publication number
- JPS55151615A JPS55151615A JP6021079A JP6021079A JPS55151615A JP S55151615 A JPS55151615 A JP S55151615A JP 6021079 A JP6021079 A JP 6021079A JP 6021079 A JP6021079 A JP 6021079A JP S55151615 A JPS55151615 A JP S55151615A
- Authority
- JP
- Japan
- Prior art keywords
- projecting
- images
- lens
- screen
- aberrations
- 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
Links
Landscapes
- Lenses (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
PURPOSE: To achieve the improvement of the resolution at the periphery of a screen by adding a light transmission body which makes the specific lens action to the optical system, in addition to the Schmidt lens formed by a concave mirror or the like provided to a projecting cathode ray tube.
CONSTITUTION: Images are formed on the fluorescent surface 3 of a projecting cathode ray tube 8 by the electron beams corresponding to images by an electron gun. This image light is corrected of aberrations by the Schmidt lens formed by a concave mirror 8 focusing at the face 3, a correcting plate 10, etc. and is applied to the light transmission body 11 of which the central part does not make lens action. Thereby, only the peripheral image light of large aberrations is corrected of aberrations and is imaged on the projecting screen, and this results in the improved resolution at the periphery of the projecting lens. Hence, the images of high resolution are formed over the entire region of the screen.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6021079A JPS55151615A (en) | 1979-05-16 | 1979-05-16 | Projected shape image display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6021079A JPS55151615A (en) | 1979-05-16 | 1979-05-16 | Projected shape image display device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55151615A true JPS55151615A (en) | 1980-11-26 |
Family
ID=13135552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6021079A Pending JPS55151615A (en) | 1979-05-16 | 1979-05-16 | Projected shape image display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151615A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5227728B2 (en) * | 1971-09-30 | 1977-07-22 | ||
JPS5454649A (en) * | 1977-10-07 | 1979-05-01 | Minolta Camera Co Ltd | Reflection type optical system of television projector |
-
1979
- 1979-05-16 JP JP6021079A patent/JPS55151615A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5227728B2 (en) * | 1971-09-30 | 1977-07-22 | ||
JPS5454649A (en) * | 1977-10-07 | 1979-05-01 | Minolta Camera Co Ltd | Reflection type optical system of television projector |
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