JPS5518642A - Production of high illuminance concave screen - Google Patents
Production of high illuminance concave screenInfo
- Publication number
- JPS5518642A JPS5518642A JP9185978A JP9185978A JPS5518642A JP S5518642 A JPS5518642 A JP S5518642A JP 9185978 A JP9185978 A JP 9185978A JP 9185978 A JP9185978 A JP 9185978A JP S5518642 A JPS5518642 A JP S5518642A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- concaves
- ridges
- affixed
- spacing
- 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
- Overhead Projectors And Projection Screens (AREA)
Abstract
PURPOSE: To increase the visible range in the horizontal directions, ease the cleaning of the surface of the screen and make production easy and inexpensive by using the specific high illuminance screen which is concaved only in the vertical directions for a color video projector.
CONSTITUTION: A metal film 5 having gloss such as of Al is affixed on the surface of a high-illuminance screen 1 composed of the synthetic-resin-made film 4 formed with a multiplicity of ridges 2 in one direction at a spacing about 1.05mm and formed with concaves and concaves 3 of a spacing about 0.3mm in the ridges. Further a transparent thin film is provided thereon. This screen 1 is affixed to an elastic plate which is then fitted in the groove of a frame body 7 consisting of side frames 8 and top and bottom frames 14, whereby the screen 16 which is concave in the vertical directions and flat in the horizontal directions is formed. A suspension supporting jig 9 is fixed by means of wing nuts 10 and bolts 11 to the side frames 8 and is pivotally supported in such a manner as to permit adjustment of the angle of inclination.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9185978A JPS5518642A (en) | 1978-07-27 | 1978-07-27 | Production of high illuminance concave screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9185978A JPS5518642A (en) | 1978-07-27 | 1978-07-27 | Production of high illuminance concave screen |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5518642A true JPS5518642A (en) | 1980-02-08 |
Family
ID=14038272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9185978A Pending JPS5518642A (en) | 1978-07-27 | 1978-07-27 | Production of high illuminance concave screen |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5518642A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61114432U (en) * | 1984-12-28 | 1986-07-19 | ||
JPS63206458A (en) * | 1987-02-21 | 1988-08-25 | Shinsei Kogyo Kk | Method for preventing generation of bottom dross in hot dip zinc coating bath |
JPS63146840U (en) * | 1987-03-17 | 1988-09-28 | ||
JP2005215396A (en) * | 2004-01-30 | 2005-08-11 | Toppan Printing Co Ltd | Reflection type screen |
-
1978
- 1978-07-27 JP JP9185978A patent/JPS5518642A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61114432U (en) * | 1984-12-28 | 1986-07-19 | ||
JPS63206458A (en) * | 1987-02-21 | 1988-08-25 | Shinsei Kogyo Kk | Method for preventing generation of bottom dross in hot dip zinc coating bath |
JPS63146840U (en) * | 1987-03-17 | 1988-09-28 | ||
JP2005215396A (en) * | 2004-01-30 | 2005-08-11 | Toppan Printing Co Ltd | Reflection type screen |
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