JPS5979840U

JPS5979840U - screen

Info

Publication number: JPS5979840U
Application number: JP1982175424U
Authority: JP
Inventors: 和男足立
Original assignee: 三菱電機株式会社
Priority date: 1982-11-17
Filing date: 1982-11-17
Publication date: 1984-05-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の反射形の球面スクリーンを示す斜視図、
第２図はこの考案の背景となる平面状スクリーンを示す
斜視図、第３図はこの考案の原理を説明するための光源
と結像点との関係を示す図、第４図はこの考案における
光源と結像点との関係を示す図である。２．２０・・・スクリーン、ｐｌ、　ｐ２．　ｐ３．　
ｐ４°°°球面小片、Ｐｏ・・・中央構成面。なお、図
中同一符号は同一または相当部分を示す。Figure 1 is a perspective view of a conventional reflective spherical screen;
Fig. 2 is a perspective view showing a flat screen which is the background of this invention, Fig. 3 is a diagram showing the relationship between a light source and an imaging point to explain the principle of this invention, and Fig. 4 is a diagram showing the relationship between a light source and an imaging point in order to explain the principle of this invention. It is a figure showing the relationship between a light source and an imaging point. 2.20...Screen, pl, p2. p3.
p4°°°spherical small piece, Po... central constituent surface. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A planar shape in which the screen surface is divided into a large number of spherical pieces, each spherical piece is stepped down in steps as it moves away from the center of the screen, and the frontmost projecting portion of each spherical piece is on the same plane. A screen characterized in that the curvature of the spherical piece increases as it moves away from the center of the screen.