| 摘要 |
PURPOSE:To obtain a large-sized lens for stereoscopic display easily and relatively inexpensively by forming the first lens body, where concave lens parts and plane parts are arranged alternately and continuously, and the second lens body, where concave lens groups including plural small concave lenses and plane parts are arranged alternately and continuously, on both faces of a lens substrate. CONSTITUTION:A lens substrate 1 is formed with two transparent plane plates 2 and 3 arranged in parallel. Columnar concave lens parts 4 and stripe-shaped plane parts 5 are arranged alternately at a prescribed pitch on the upper face of the lens substrate 1 to form the first lenticular lens body. Concave lens groups 7 each of which includes three columnar small concave lenses 6 narrower than concave lens parts 4 and stripe-shaped plane parts 8 are arranged alternately at a prescribed pitch to form the second lenticular lens body.
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