US 9,423,770 B2 · Holographic imaging

Abstract

Technologies are generally described for generating a holographic image on a transparent screen such that a user can view another scenery image though the screen along with the generated holographic image. Example devices may include an ultraviolet light irradiation unit configured to irradiate an ultraviolet light towards a hologram generating unit. The holographic generating unit may be configured to generate a hologram image in response to the received ultraviolet light. Further, the light irradiation unit and the hologram generating unit may be operable to project the hologram image onto a transparent screen coated with a photochromic material. The light transmittance of the photochromic material coated on the transparent screen may change when a light beam with a specific frequency range is irradiated on the photochromic material. The example device may further include a hologram reconstruction light source configured to irradiate a hologram reconstruction light on the transparent screen.

Claims30

Dependent claims

A holographic imaging device, comprising:

an ultraviolet light irradiation unit configured to irradiate a first ultraviolet light;
and
a hologram generation unit including a transparent material configured to receive the first ultraviolet light and generate a hologram image by a second ultraviolet light irradiated from the transparent material, wherein the ultraviolet light irradiation unit and the hologram generation unit are operable to project the hologram image onto a transparent screen that is coated with a photochromic material and that is located at a projection distance away from the hologram generation unit.

Dependencies are inferred from the claim text.

Holographic imaging

Life of this patent

Holographic imaging

Life of this patent

Abstract

Claims30