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US 9,804,565 B2Granted
Apparatus and method for displaying transmission and reflection holograms
AssigneeCeres Imaging Limited
InventorIan Redmond
Life of this patent
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Abstract
An apparatus and method for displaying holograms. A compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light.
Claims12
A hologram display apparatus, comprising:
- a light source or a plurality of light sources capable of emitting light to illuminate a reflection hologram and form a consequent color holographic image;
- the reflection hologram constructed to form the color holographic image;
- at least a first mirror capable of reflecting light from the light source or the plurality of light sources;
- a hologram surface which forms the color holographic image;
- a spectral reflector;
- wherein said first mirror is configured substantially perpendicular to said spectral reflector;
- wherein light from the light source or the plurality of light sources reflects from said first mirror and first passes through the reflection hologram onto the spectral reflector which is configured substantially parallel to the reflection hologram which reflects light back towards the reflection hologram at its intended illumination angle and wherein the color holographic image is recreated and transmitted through the spectral reflector to a viewer.
4 more elements
Dependencies are inferred from the claim text.