Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1996-05-23
1998-09-01
Lusignan, Michael
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
264 132, 264 17, 264 19, 359619, 427162, 4271633, 427428, 428199, 428201, 430321, B32B 300
Patent
active
058009078
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of producing a lens, method of fabricating an article with lens, the article with lens, a resin composition for forming defining lines and a resin composition for forming a lens.
More particularly, the present invention relates to a method of producing a lens allowing one to recognize plane images such as pictures, designs, colors and combinations thereof as being stereoscopic or three-dimensional images, or recognize an image selected depending upon an angle of observation from a plurality of sets of different images. This lens may be such as to allow one to view such an animation that a shape is continuously changed or discontinuous images appear in succession, or to be used for a transmission screen for use in projectors or television sets or for use as a reflection or diffusion plate. This method can secure the easy or desirable application of suitable lens on lens-forming surfaces. Furthermore, the present invention relates to a method of fabricating an article with the lens and the article with the lens, by which article two-dimensional images comprising pictures, designs, colors and combinations thereof can be viewed in a stereoscopic or three-dimensional fashion, or a plurality of sets of different images can be viewed selectively depending upon an angle of view so that these selected images may look an animation, e.g., an image may continuously be changed or irrelevant images may successively be viewed. Still further, the present invention relates to a resin or resin composition suitable for forming lens-forming defining lines on a substrate which are adequately fine to provide a good repellency for the resin or resin composition for forming the lens. Finally, the present invention relates to a lens-forming resin composition from which the articles with the lens and fine lens for use in the article.
BACKGROUND OF THE INVENTION
Hitherto has been known a so-called lenticular lens which comprises a plurality of fairly fine columnar convex lenses flatly arranged so that two-dimensional images comprising pictures, designs, colors and combinations thereof may be viewed in a three-dimensional or stereoscopic fashion, or a plurality of different images may selectively be viewed depending upon an angle of view.
This lens comprises a plurality of fairly fine convex lenses aligned on the surface of a lens sheet made by heating and pressing in a metal mold. Furthermore, on the side of this lens sheet opposite to the side thereof having the lenses is applied a sheet having printed thereon pictures, designs and/or colors for images to be viewed in a stereoscopic fashion, thereby allowing one to view plane or two-dimensional images in a three-dimensional or stereoscopic fashion, or to view a plurality of different still images in an animated fashion by changing the angle of his viewing.
However, there is such a problem that costs for production of such lenses as mentioned above, such as lenticular lens, flyeye lens or Fresnel lens in different sizes and shapes are fairly high, because a metal mold must be provided for each of the lenses. In such an article with a lenticular lens as mentioned above, the pitch of the convex lenses are not only required to comply with that of images such as pictures, designs or colors, but also each of the convex lenses is required to exactly correspond to visual expressions such as pictures, designs or colors so as to clearly recognize the visual expressions. However, it was highly complex and difficult to fabricate such an article with lenticular lens, particularly the article of a large size. The large article with a lenticular lens was hardly fabricated with an increased amount of errors due to shrinkage. That is, shrinkage may occur in a lens sheet itself, or expansion and/or shrinkage may occur in a lens sheet when a sheet material is to be applied to the lens sheet. Therefore, there was a difficulty in putting the lens sheet on the sheet material to adjust the convex lenses of the lens sheet to de
REFERENCES:
patent: 5458820 (1995-10-01), Lefebvre
patent: 5536455 (1996-07-01), Aoyama et al.
Grapac Japan Co., Inc.
Lusignan Michael
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