| 摘要 |
<p>The present invention relates to a double-faced lenticular lens sheet comprising incident side lenses (1) formed on one of the main faces and corresponding emergent side lenses (2) formed on the other main face, light rays incident on said incident side lens (1) in parallel to the optical axis and passing through the lenticular lens sheet and coming out from the emergent side lens (2), which is characterized in that, given an angle &thetas;1 formed by a straight line parallel to the optical axis of the incident side lens and a light ray refracted by the incident plane to pass through the lenticular lens sheet, an angle &thetas;2 formed by a straight line parallel to the optical axis of the emergent side lens and the light ray refracted by and emitted from the emergent plane, the absolute value DELTA &thetas;1 of the angle of refraction &thetas;1 on the incident plane and the absolute value DELTA &thetas;2 of the angle of refraction (&thetas;2-&thetas;1) on the emergent plane, the ratio between DELTA &thetas;1 and DELTA &thetas;2 ( DELTA &thetas;2/ DELTA &thetas;1) is 1.0 or more so long as the cent er rests on the optical axis of the lens on the incident side and the width is 80% or less of the lens pitch on the incident side. <IMAGE></p> |
