Method and system for producing multiple images in a single image plane using diffraction
AssigneeStamper Technologies, Inc.
InventorBruce Ha
Life of this patent
Estimating the term…
Abstract
Methods create images viewable under different selected angels on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a photosensitive surface is exposed with multiple diffraction patterns creating super-imposed images. These diffraction patterns create super-imposed images on the photosensitive surfaces, which can be read by either a human or a computer.
Claims30
1-16. (canceled)
A method of forming images on a rotating photosensitive substrate, the method comprising:
- exposing, solely by a single spherical wavefront, the rotating photosensitive substrate to form a plurality of first diffractive elements and a plurality of second diffractive elements, wherein the plurality of first diffractive elements is reconstructable to form a first image viewable at a first angle, and wherein the plurality of second diffractive elements is reconstructable to form a second image viewable at a second angle different from the first angle.
A method of forming images on a rotating photosensitive substrate, the method comprising:
- exposing, solely by a single laser beam wavefront lacking interference information, the rotating photosensitive substrate to form a plurality of diffractive elements,
- wherein a first portion of the plurality of diffractive elements is reconstructable to form a first image viewable at a first angle,
- wherein a second portion of the plurality of diffractive elements is reconstructable to form a second image viewable at a second angle different from the first angle,
- wherein the exposing is accomplished without the use of a beamsplitter or a reference beam, and
- wherein the exposing is accomplished with one laser beam impact point.
An apparatus with multiple diffraction images, the apparatus comprising:
- a substrate;
- and
- a plurality of diffractive elements coupled to the substrate,
- wherein a first portion of the plurality of diffractive elements is reconstructable to form a first image viewable at a first angle,
- wherein a second portion of the plurality of diffractive elements is reconstructable to form a second image viewable at a second angle different from the first angle,
- wherein the plurality of diffractive elements are formed by exposing the substrate, during rotation of the substrate, to a single laser beam wavefront,
- wherein the exposing is accomplished without the use of a beamsplitter or a reference beam, and
- wherein the exposing is accomplished with one laser beam impact point.
Dependencies are inferred from the claim text.