Patent ID: 9618757
Date: 2017-04-11
CPC Classifications: G02B,H04N

Claim:
1. A stereoscopic image display device, comprising: a recursive reflective material including a reflected light outlet, through the reflected light outlet light passes out from a front side to a back side thereof; and a half mirror whose transmission rate is set to 40-70% placed on a light entrance side of the recursive reflective material; wherein the recursive reflective material is formed by arranging a large number of cubic corner bodies in a way that shaft centers of the cubic corner bodies are arranged in parallel to each other, the cubic corner bodies each having the reflected light outlet at a top portion of a truncated triangular pyramid formed by truncating an apex portion of a triangular pyramid having three side planes each formed from an isosceles right triangle, provided that a height along a centerline m in the triangular pyramid having the apex portion thereof untruncated is h, the reflected light outlet of each of the cubic corner bodies is located in a range of (0.3 to 0.8)·h from an apex corner of the triangular pyramid, and by means of the recursive reflective material and the half mirror, light from an object is let in the recursive reflective material through the half mirror, the light having reflected off the recursive reflective material is reflected off the half mirror, reflected light from the half mirror is let out from the reflected light outlet to outside, and an image location is changed and a real image is formed on a back side of the recursive reflective material.