JPS55153916A - Projection type picture image display device - Google Patents
Projection type picture image display deviceInfo
- Publication number
- JPS55153916A JPS55153916A JP6185579A JP6185579A JPS55153916A JP S55153916 A JPS55153916 A JP S55153916A JP 6185579 A JP6185579 A JP 6185579A JP 6185579 A JP6185579 A JP 6185579A JP S55153916 A JPS55153916 A JP S55153916A
- Authority
- JP
- Japan
- Prior art keywords
- ray
- aberrations
- display device
- image display
- light
- 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
Landscapes
- Lenses (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
PURPOSE: To enhance the utilization rate of luminuous flux and improve the aberrations at the peripheral part of the projection screen by interposing two kinds of light media between the light emitting surface and concave mirror of the projection type picture image display device which magnifies and projects television images, etc.
CONSTITUTION: The refractive index μ2 of the light medium 25 between a reflecting mirror 27 and luminous flux exit face 29 is made larger than the refractive index μ1 of a light medium 24. With such constitution, refractive effect is caused by the boundary face 30 so that the rays (a), (b), (c) are changed to (a'), (b'), (c') respectively and the ray (a') becomes less convergent than (a) and the ray (c') has a greater tendency to conversion than (c) but the ray (b) does not change so much with respect to (b). Hence, the aberrations at the periphery of the screen 22 may be considereably improved owing to the refraction effect at the above- mentioned boundary face 30 and if these refractive indices μ1, μ2, etc. are suitably adjusted, the image projection system of extremely less aberrations becomes feasible.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6185579A JPS55153916A (en) | 1979-05-18 | 1979-05-18 | Projection type picture image display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6185579A JPS55153916A (en) | 1979-05-18 | 1979-05-18 | Projection type picture image display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55153916A true JPS55153916A (en) | 1980-12-01 |
JPS6326365B2 JPS6326365B2 (en) | 1988-05-30 |
Family
ID=13183125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6185579A Granted JPS55153916A (en) | 1979-05-18 | 1979-05-18 | Projection type picture image display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55153916A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5227728U (en) * | 1975-08-19 | 1977-02-26 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5227728B2 (en) * | 1971-09-30 | 1977-07-22 |
-
1979
- 1979-05-18 JP JP6185579A patent/JPS55153916A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5227728U (en) * | 1975-08-19 | 1977-02-26 |
Also Published As
Publication number | Publication date |
---|---|
JPS6326365B2 (en) | 1988-05-30 |
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