| 摘要 |
PROBLEM TO BE SOLVED: To provide a frameless screen, on which bright images can be viewed by generating irregular reflections by thickening the plate of a screen part at image projection and the images can be viewed, as through they are in relief by removing an outer frame from the screen at the time of the image projection. SOLUTION: The lower side of a reinforced opal translucent acrylic thin plate which is to be an image projection part is supported tightly by the upper side of a transparent acrylic board thin plate at an upper part, the entire front and back surfaces of the opal translucent acrylic thin plate and the transparent acrylic board thin plate are clamped by an outer side transparent acrylic board, so that a clamped plate is obtained. The lower side outer peripheral edge of the clamped plate is supported by a supporting leg.
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