| 摘要 |
PROBLEM TO BE SOLVED: To provide a light diffusing element for performing scattering to a prescribed incident angle range but performing transmission without scattering at the other angle and extremely reducing light dispersion and wavelength selectivity by projecting diffused light provided with the prescribed incident angle range to a thick photosensitive material and recording the mutual interference fringes of light inside a diffused luminous flux inside the photosensitive material. SOLUTION: When a transmission diffusion plate 2 is tightly adhered to the photosensitive material 1 (a) or separated from the photosensitive material 1 for a prescribed distance and arranged so as to face each other (b) and a laser beam 3 is made incident from the opposite side of the photosensitive material 1 of the transmission diffusion plate 2, the diffused light (scattered light) 4 is emitted to the side of the photosensitive material 1 of the transmission diffusion plate 2. The diffused light 4 is made incident on the photosensitive material 1, the light inside the diffused luminous flux interferes with each other and many interference fringes are recorded inside the photosensitive material 1. This light diffusing element 10 recorded and produced in such a manner scatters the incident light of a specified angle, transmits the light from the other angle and looks transparent. Also, the color reproducibility of scattered images is excellent as well. |
