| 摘要 |
PURPOSE:To give different degrees of coloring to light of different incident angles by providing configuration patterns of layers not allowing the transmission of rays and configuration patterns of coloring layers respectively on both sides of a transparent substrate. CONSTITUTION:A sheet 1A has pattern consisting of arranging light absorbing layers 3 and coloring layers 4 at equal pitches in multiplicity in parallel on both sides of a transparent substrate 2. Arrangement of 3, 4 in dispassed in such a relation that if one of them is negative the other is positive. When white light enters 1A from the direction A, 50% is absorbed and the balance 50% colors and transmits. For the incidence in the direction B, a part out of 50% transmission colors. In the direction C, all the transmitted light is colorless and in the direction D, it again begins to color. It is equally well to use a light reflection layer in place of 3. The production of 1A simply necessitates providing the patterns of 3 or the reflection layer on one side of 2, coating a negative type photosensitive resin layer on the other side, exposing the same from the pattern side and dyeing the dured resin after developing. |
