| 摘要 |
A lenticular lens sheet (10A) which comprises an incident lens portion having a plurality of incident lenses (11) on an incident surface thereof, and an emergent lens portion having a plurality of emergent lenses (12) on an emergent surface thereof, wherein the emergent lenses (12) are provided so as to correspond to converging positions of the incident lenses (11), the portions of the emergent surface on which rays entering the incident lenses (11) does not converge are provided with substantially cross-sectionally rectangular projections (13A), and black stripes (14) formed by applying a photoabsorbent to top surfaces (13a) of the projections (13A), the incident lenses (11) are formed of convex lenses bulging toward an incident side and designed so that condensing points thereof are positioned in an inner portion of the lenticular lens sheet (10A), and the emergent lenses (12) are formed of concave lenses bulging toward the inner portion of the lenticular lens sheet (10A), whereby it becomes possible to set the thickness of the lenticular lenses large while maintaining the pitch thereof at a low level, and increase a ratio of the black stripes.
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