Holographic image generation and reconstruction

An apparatus configured to reconstruct a holographic image of an object, the apparatus comprising:

• a receiver configured to receive a first input signal representative of a hologram of the object and a second input signal representative of background of the object;
• a virtual image light source configured to generate a virtual image light beam responsive to the first input signal;
• a scanner configured to receive the virtual image light beam and reflect the virtual image light beam to generate a scan beam;
• a first screen coated with a photochromic material and configured to receive the scan beam from the scanner, wherein the first screen includes a visible light transmittance characteristic that is adjusted in response to the scan beam and effective to form the hologram of the object on the first screen;
• a reconstruction light source configured to generate a reconstruction light beam to irradiate the first screen to reconstruct the holographic image of the object;
• and
• a second screen arranged to overlap the first screen and also configured to display the background of the object responsive to the second input signal.

A method for generating a holographic image of an object, the method comprising:

• generating, by a light source, a light beam;
• splitting, by a beam splitter, the light beam irradiated from the light source into a first light beam and a second light beam such that the first light beam is irradiated on the object;
• receiving and reflecting, by a minor, the second light beam to generate a reference beam;
• detecting, by a first image sensor, an interference image caused by interference between the reference beam and the first light beam scattered by the object;
• converting, by a video signal generator, the detected interference image into a first image signal associated with the light source;
• and
• detecting, by a second image sensor, a second image of background of the object and converting the second image into a second image signal.

A method of reconstructing a holographic image of an object, the method comprising:

• receiving, by a receiver, a first input signal representative of a hologram of the object and a second input signal representative of background of the object;
• generating, by a virtual image light source, a virtual image light beam responsive to the first input signal;
• receiving and reflecting, by a scanner, the virtual image light beam to generate a scan beam;
• receiving, by a first screen coated with a photochromic material, the scan beam from the scanner, and forming the hologram of the object on the first screen as a result of variations in the visible light transmittance characteristic of the first screen in response to the scan beam;
• generating, by a reconstruction light source, a reconstruction light beam to irradiate the first screen to reconstruct the holographic image of the object;
• and
• displaying, by a second screen arranged to overlap the first screen, the background of the object responsive to the second input signal.

A non-transitory computer-readable storage medium which stores a program for causing a processor configured to generate a holographic image of an object, the program comprising one or more instructions for:

• generating, by a light source, a light beam;
• splitting, by a beam splitter, the light beam irradiated from the light source into a first light beam and a second light beam such that the first light beam is irradiated on the object;
• receiving and reflecting, by a minor, the second light beam to generate a reference beam;
• detecting, by a first image sensor, an interference image caused by interference between the reference beam and the first light beam scattered by the object;
• converting, by a video signal generator, the detected interference image into a first image signal associated with the light source;
• and
• detecting, by a second image sensor, a second image of background of the object and converting the second image into a second image signal.

A non-transitory computer-readable storage medium which stores a program for causing a processor to reconstruct a holographic image of an object, the program comprising one or more instructions for:

• receiving, by a receiver, a first input signal representative of a hologram of the object and a second input signal representative of background of the object;
• generating, by a virtual image light source, a virtual image light beam responsive to the first input signal;
• receiving and reflecting, by a scanner, the virtual image light beam to generate a scan beam;
• receiving, by a first screen coated with a photochromic material, the scan beam from the scanner, and forming the hologram of the object on the first screen as a result of variations in the visible light transmittance characteristic of the first screen in response to the scan beam;
• generating, by a reconstruction light source, a reconstruction light beam to irradiate the first screen to reconstruct the holographic image of the object;
• and
• displaying, by a second screen arranged to overlap the first screen, the background of the object responsive to the second input signal.

An apparatus configured to reconstruct a holographic image of an object, the apparatus comprising:

• a receiver configured to receive a first input signal representative of a hologram of the object and a second input signal representative of background of the object;
• a virtual image radiation source configured to generate a virtual image radiation beam responsive to the first input signal;
• a scanner configured to receive the virtual image radiation beam and redirect the virtual image radiation beam to generate a scan beam;
• a first screen coated with a material and configured to receive the scan beam from the scanner, wherein the material has a visible light transmittance characteristic that is responsive to the scan beam and effective to form the hologram of the object on the first screen;
• a reconstruction light source configured to generate a reconstruction light beam to irradiate the first screen to reconstruct the holographic image of the object;
• and
• a second screen arranged to overlap the first screen and also configured to display the background of the object responsive to the second input signal.