Patent ID: 7974004
Filing Date: 2011-07-05
Classification: G03B

Abstract:
1. A screen comprising: a screen main body onto which an image light is projected; a first and second support section which regulate and support both parallel extreme sections of the screen main body in a horizontal or vertical direction; a support rod disposed in a central portion of the screen main body; and four arm members which, being for holding the screen main body in a stretched condition, extend from the support rod to both extremities of each of the first and second support sections, the four arm members have first connection sections, one at each of the first and second support section side extremities, each of the first and second support sections includes at either extremity thereof a second connection section which receives the first connection section, an attachment and detachment of each of the arm members to and from the screen main body is carried out by an attachment and detachment of the first connection section to and from the second connection section, each of the four arm members has a third connection section at the support rod side extremity, the support rod has fourth connection sections which receive, one each, the four arm members, and an attachment and detachment of the arm members to and from the support rod is carried out by the third connection sections and fourth connection sections coming into engagement, wherein: