DEVICE FOR HOLDING REAR PROJECTION SCREEN, METHOD FOR HOLDING REAR PROJECTION SCREEN, SCREEN HOLDING FILM BODY, AND METHOD FOR HOLDING SCREEN HOLDING FILM BODY

摘要

The present invention relates to a retaining apparatus of a backprojection screen and a retaining method of the backproject screen and further to a retaining film body used to retain such a screen and a retaining method of that retaining film body. There are provided film body which is set concerning an end face of split lens constructing the screen, and has an engaging portion, a retaining member to hold the film body, an engaging member which is set on the retaining member in its engaged state with the engaging portion of film body, and a tense state keeping means which sets the film body in a tense state by moving the engaging member. The film body or so-called retaining film body is made by forming an engaging hole through extended four sides covering four sides of the split lens. The four sides of the retaining film body are kept in a tense state. Thereby, the joint between projected pictures is reduced as much as possible to avoid the missing of project picture and to make assembling simple. <IMAGE>