Curved lens having hologram and method for fabricating the same

Abstract

The present invention provides a curved lens having a hologram and a method of fabricating the same. In this method, a chromium-plated metal plate on which a hologram is formed is fixed to a moving plate of an injection mold having a curved cavity, and plastic resin is injected and molded. Thus, the metal plate is stretched or elongated, and simultaneously, the hologram of an elongated metal plate is transferred to the plastic resin. Then, a highly refractive material is deposited on the injected plastic, and the resultant structure is coated with a UV-blocking material. In this way, the curved lens having a hologram is fabricated. The plastic curved lens passes the standard values for sunglass lenses in terms of power and parallelism, and can obtain a distinct hologram image by completely preventing generation of color stripes which is the most serious problem in existing plastic curved lenses. Also, the curved hologram lens according to the present invention, does not strain the eyes of lens-wearers since no stripes and no distortion are generated upon assembly with the rim of a pair of eyeglasses, in contrast with plane lenses. Therefore, the hologram lens is applicable to sunglass lenses and various laser goggles.

Dependencies are inferred from the claim text.