| 摘要 |
The present invention relates to a plane stereoscopic film and, more specifically, to a plane stereoscopic film comprising a lenticular lens in which multiple convex lens having a semi-circumferential shape are arranged in parallel or a micro lens in which convex lenses having a semi-circular shape are consecutively arranged; wherein the convex lens includes a first aspherical stereoscopic layer having a first refractive index and an aspherical surface in the cross section thereof, a plane coating layer coated to flatten the upper surface of the first aspherical stereoscopic layer with a transparent resin having a second refractive index which is lower than the first refractive index, and a lower focal distance layer prepared in the lower part of the first aspherical stereoscopic layer. According to the plane stereoscopic film comprising multiple convex lens having different refractive indices proposed in the present invention, a surface contamination problem is solved while maintaining a stereoscopic effect giving function of a stereoscopic film by forming a plane coating layer to flatten the upper surface of a stereoscopic layer and composing different refractive indices for the stereoscopic layer and the plane coating layer, and a focal distance can be adjusted and a view angle narrowed problem caused by multiple refraction occurrences can be solved by forming the cross section of a convex lens of the stereoscopic layer as an aspherical surface. Also, according to the present invention, a second aspherical stereoscopic layer having a different refractive index is included between the first aspherical stereoscopic layer and the plane coating layer, the convex lens curvature of the second aspherical stereoscopic layer is formed to be smaller than the convex lens curvature of the first aspherical stereoscopic layer, which can facilitate refractive index adjustment and plane coating. Furthermore, according to the present invention, the generators of the semi-circumferential convex lenses of the first aspherical stereoscopic layer and the second aspherical stereoscopic layer are prepared to be crossed, which gives stereoscopic effects from various directions using a lenticular lens. |
