Hologram structure
AssigneeDai Nippon Printing Co., Ltd.
InventorShinichiro Suzuki
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Abstract
A main object of the present disclosure is to provide a hologram structure having excellent forgery preventability and designability. The present disclosure achieves the object by providing a hologram structure comprising: a hologram layer including a reflection type hologram forming region carrying a recorded phase type Fourier transform hologram that transforms an incident light from a point light source into a desired optical image; and a vapor deposition layer formed so as to come into contact with a concavo-convex surface of the reflection type hologram forming region of the hologram layer, and a size of the reflection type hologram forming region in plan view is in a range of 5 mm square or more and 50 mm square or less.
Claims12
A hologram structure comprising:
- a hologram layer including a reflection type hologram forming region carrying a recorded phase type Fourier transform hologram that transforms an incident light from a point light source into a desired optical image;
- and
- a vapor deposition layer formed so as to come into contact with a concavo-convex surface of the reflection type hologram forming region of the hologram layer, and
- a size of the reflection type hologram forming region in plan view is in a range of 5 mm square or more and 50 mm square or less,
- wherein the hologram structure further comprises an image displaying layer that displays an image used in combination with the optical image, and the image displaying layer is formed on a side opposite to the vapor deposition layer side of the hologram layer or on a side opposite to the hologram layer side of the vapor deposition layer.
A hologram structure comprising:
- a hologram layer including a hologram forming region;
- and
- a vapor deposition layer formed so as to come into contact with a concavo-convex surface of the hologram forming region of the hologram layer, and
- the followings are arranged in the hologram forming region of the hologram layer:
- a hologram cell carrying a recorded phase type Fourier transform hologram that transforms an incident light from a point light source into a desired optical image;
- and
- a diffraction grating cell formed on a same plane as the hologram cell, the diffraction grating cell reproduces a diffraction grating pattern by being arranged in a pattern in plan view,
- wherein the diffraction grating pattern is a steric diffraction grating pattern capable of reproducing a stereoscopic pattern.
Dependencies are inferred from the claim text.