JPS5518642A - Production of high illuminance concave screen - Google Patents

Production of high illuminance concave screen

Info

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
Application number
JP9185978A
Other languages
Japanese (ja)
Inventor
Teruhisa Yotsuya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JANOME SEIKI KK
Original Assignee
JANOME SEIKI KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JANOME SEIKI KK filed Critical JANOME SEIKI KK
Priority to JP9185978A priority Critical patent/JPS5518642A/en
Publication of JPS5518642A publication Critical patent/JPS5518642A/en
Pending legal-status Critical Current

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
JP9185978A 1978-07-27 1978-07-27 Production of high illuminance concave screen Pending JPS5518642A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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