Spectacle lens structure with a planar reflective outer surface
OwnerWei-Wu Alex Kuoinventor
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Abstract
A spectacle lens structure includes a light transmitting base plate having a serrated surface defining a hologram. A thin reflective coating having a planar outer surface is provided on the serrated surface to partially reflect an incident light and allow the remaining portion of the incident light to penetrate and diffract about the serration for the formation of the holographic image. The reflective coating may be of a refractive index quite different from that of the base plate so as to provide a brazed 3-D image. If the reflective coating is made of a material having a refractive index close to the base plate, then a further coating having a high refractive index, such as ZnS, has to be provided on the reflective coating to provide a brazed 3-D image.
Claims11
A spectacle lens structure comprises a light transmitting base plate having a substantially planar inner face confronting a wearer and an opposite outer face on which a plurality of serrations are formed to define a hologram with a reflective coating provided thereon, the reflective coating defining a planar outer face, the reflective coating being so thin as to allow a portion of light to transmit and reflect the remaining portion of the light so as to form a holographic image.
Dependencies are inferred from the claim text.