An optical film including a recording surface on which a plurality of unit blocks is disposed at regular intervals. For these unit blocks, phase components of light from a reconstruction point are calculated. The recording surface includes a calculated element region provided with an array of the unit blocks for which phase components of light from the reconstruction point are calculated for reproduction of an image. A first image is a monotone reconstruction image having even brightness, and a second image is a grayscale image having brightness gradation.

The present disclosure provides a hologram display device including a spatial light modulator, a lens assembly, and a plurality of backlights. The plurality of backlights are provided at a light incident side of the spatial light modulator, and the lens assembly is provided between the plurality of backlights and the spatial light modulator. The plurality of backlights are configured to emit light having different directions towards the lens assembly, respectively, the lens assembly is configured to guide received light having different directions to the spatial light modulator, and the spatial light modulator is configured to form images at different positions at a light emergent side of the spatial light modulator according to the light having different directions from the lens assembly, respectively.

A special holographic security system utilizing and centered on holographic images of homeowners or security guards to provide safety for a person's home, businesses and properties by incorporating the hologram image with the sensors, lights, cameras and other security hardware. The hologram image can be incorporated with sound, pre-recorded messages, and real time surveillance, and smart phone applications to interact with potential break-ins and security breaches. Also taught are significant ways and methods that use of holographic systems can improve homeland security as well as defense tactics to increase security and save lives. This holographic security concept can be implemented in various creative ways to preserve security in the United States and abroad.

A floating hologram apparatus includes a display including a first output area to output a first hologram image and a second output area to output a second hologram image and a prism array positioned in front of the display and configured to refract rays of the first hologram image and the second hologram image. The prism array includes multiple prisms of which a first facet to which a ray of the second hologram image is incident and a second facet to which a ray of the first hologram image is incident have different angles.

A method for single-write holographic imaging involves determining a layout of a plurality of holographic images on a substrate, the plurality of holographic images including at least a first holographic image having a first parameter set and a second holographic image having a second parameter set, inputting the parameter sets into a database and controlling an imaging apparatus to image the first and second holographic images on the substrate in a single session to create an integrated holographic pattern.

The present disclosure provides a hologram display device including a spatial light modulator, a lens assembly, and a plurality of backlights. The plurality of backlights are provided at a light incident side of the spatial light modulator, and the lens assembly is provided between the plurality of backlights and the spatial light modulator. The plurality of backlights are configured to emit light having different directions towards the lens assembly, respectively, the lens assembly is configured to guide received light having different directions to the spatial light modulator, and the spatial light modulator is configured to form images at different positions at a light emergent side of the spatial light modulator according to the light having different directions from the lens assembly, respectively.

Provided is an apparatus and method for generating a hologram pattern with a reduced amount of computation. The apparatus may include a reference depth layer setting unit configured or having a capacity to set a reference depth layer using data associated with a three-dimensional (3D) object, a first hologram pattern generating unit configured to generate a first hologram pattern corresponding to the 3D object in the reference depth layer, and a second hologram pattern generating unit configured to generate a second hologram pattern in a hologram plane using the first hologram pattern.

A device, system and method for holographic 3D imaging. The device includes a laser light source that delivers a laser beam; an aperture disc including at least two pinholes, the laser beam being filtered by the pinholes so that a reference wave and an object wave are generated; a sample having a first area containing an object to be imaged and a second area without any object, in which the first area and the second area are illuminated by the object wave and the reference wave respectively; and an image sensor that captures an off-axis hologram for reconstructing an image of the object, in which the reference wave and the object wave are interfered on the image sensor and the hologram is captured based on an interference pattern of the reference wave and the object wave.

A method includes providing a multiplicity of masters, each of the masters having a substrate body and at least one master hologram, selecting a sequence of masters from the multiplicity of masters based on a plurality of holograms to be replicated and arranging the sequence of masters on a first carrier to align upper faces of the masters in a horizontal plane, detachably laminating a light-sensitive composite web on the aligned upper faces, exposing the masters to replicate the master holograms in the light-sensitive composite web, and detaching the exposed composite web from the masters. The masters are detachably incorporated in the first carrier such that a sequence and/or composition of the masters for replicating the plurality of holograms is variable. The masters are incorporated in the first carrier such that two or more faces of the masters are optically accessible for exposure.