OPTICAL PLATE AND SPACE IMAGE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a new optical plate for achieving a space display at low cost.SOLUTION: An optical plate for forming an optical image in space includes two lenticular lenses arranged apart from each other and in such a manner that optical axes of the lenses coincide with each other. Positioning of the two lenticular lenses is performed so that light incident on one of the lenses and parallel to the optical axis is emitted as light parallel to the optical axis from the other lens opposed thereto.