| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical coupling element capable of reducing visible multiple reflection images and accurately displaying floating images.SOLUTION: An interface (23a, 23b) between each transparent member (21) of an optical coupling element (1) and a respective transparent adhesive layer (22) having a refractive index lower than that of the transparent member (21) is configured to reflect light that enters in a total reflection condition and transmit light that enters in a condition other than the total reflection condition.SELECTED DRAWING: Figure 4 |
