This application discloses a device for generating a holographic stereoscopic image. The device includes a body, a three-dimensional display, and a negative refractive index plate. The body includes a first cavity and a second cavity, a bending angle existing between a central axis of the first cavity and a central axis of the second cavity. A second end of the first cavity is in communication with a first end of the second cavity, an opening being formed by a second end of the second cavity on a side wall of the body. The three-dimensional display is arranged on the first end of the first cavity, and the negative refractive index plate is arranged between the second end of the first cavity and the first end of the second cavity. A display direction of the three-dimensional display faces the negative refractive index plate, and a refraction direction of the negative refractive index plate faces the opening.

One container system includes a transparent display, a projector for providing image data on the display, and a floor defining part of a watertight cavity. The display is non-perpendicularly angled from horizontal and has proximal and distal ends. And a closure device is provided for use with a watertight container. The closure device is configured to selectively seal an opening in the watertight container and includes coupling structure (a plug, a flange, and/or threading) for selectively coupling the closure device to the watertight container to seal the opening. The closure device further includes non-transitory computer memory, at least one sensor, and a processor in data communication with the memory and the at least one sensor.

One container system includes a transparent display, a projector for providing image data on the display, and a floor defining part of a watertight cavity. The display is non-perpendicularly angled from horizontal and has proximal and distal ends. And a closure device is provided for use with a watertight container. The closure device is configured to selectively seal an opening in the watertight container and includes coupling structure (a plug, a flange, and/or threading) for selectively coupling the closure device to the watertight container to seal the opening. The closure device further includes non-transitory computer memory, at least one sensor, and a processor in data communication with the memory and the at least one sensor.

Provided is an anti-counterfeit label with multi-focus multi-layer depth-of-field images. The anti-counterfeit label is sequentially provided with a multi-focus microlens array layer, a transparent base membrane layer and a microtext array layer from top to bottom in a laminating mode, and a metal reflective layer is arranged under the microtext array layer; the multi-focus microlens array layer comprises microlenses which are distributed in an array mode and have multiple focuses; the microtext array layer comprises one set or multiple sets of subunit pattern periodic ordered arrays. The anti-counterfeit label has the advantages that the microtext array layer can be amplified by 80-800 times by the multi-focus microlens array layer. The anti-counterfeit label is particularly suitable for popular anti-counterfeiting and can effectively improve the anti-counterfeit capacity.

An apparatus for displaying a floating image is disclosed. The apparatus includes a light source that extends in a planar direction and emits light for realizing the floating image, a collecting lens, which extends parallel to the light source and refracts the light, a reflective plate, which faces the collecting lens and reflects the light that is refracted at the collective lens, and a dihedral reflector array, which extends in a planar direction and includes mirrors extending in directions intersecting each other, where a first surface of the dihedral reflector array facing the reflective plate such that the reflected light is incident on the first surface, and the reflected light is emitted from a second surface of the dihedral reflector array by being reflected by the mirrors, thereby realizing the floating image at a position spaced apart from the second surface.

An apparatus for displaying a floating image is disclosed. The apparatus includes a light source that extends in a planar direction and emits light for realizing the floating image, a collecting lens, which extends parallel to the light source and refracts the light, a reflective plate, which faces the collecting lens and reflects the light that is refracted at the collective lens, and a dihedral reflector array, which extends in a planar direction and includes mirrors extending in directions intersecting each other, where a first surface of the dihedral reflector array facing the reflective plate such that the reflected light is incident on the first surface, and the reflected light is emitted from a second surface of the dihedral reflector array by being reflected by the mirrors, thereby realizing the floating image at a position spaced apart from the second surface.

A method of producing a Pepper's Ghost, includes projecting an image of a subject onto a reflective and transparent screen to create a virtual image of the subject alongside an object, the subject in the virtual image having a colour temperature. The object is illuminated with light having a colour and intensity that results in a colour temperature of the object at least approximately matching the colour temperature of the subject in the virtual image. The subject in the virtual image has a luminance and may be illuminated with light having a colour and intensity that results in a luminance of the object at least approximately matching the luminance of the subject in the virtual image.

An optical device includes a light guide plate configured to guide light within a plane parallel to an emission surface, and a plurality of light focusing portions to which the light guide plate guides directional light. Each of the plurality of light focusing portions is provided with an optical surface configured to create from the directional light incident thereon emission light in a direction substantially converging on a single convergence point or convergence line in a space or to create emission light that substantially diverges from a single convergence point of convergence line in a space and exits from the emission surface. The plurality of light focusing portions are provided near the emission surface of the light guide plate, and each of the plurality of light focusing portions is formed along a predetermined line within a plane parallel to the emission surface.

A virtual fish tank assembly for displaying three dimensional aquatic creatures includes a housing structure. The housing structure is positioned adjacent to a fish tank. A projector is coupled to an interior space of housing structure. A control module is in electric communication with the projector. The control module obtains data from a user, reads the data, and generates a plurality of three dimensional images. A power source is in electric communication with the projector and with the control module. The power source provides power to the projector and to the control module. A screen has a peripheral surface and a back surface. The peripheral surface attaches to a respective one wall of the plurality of walls of the fish tank. The screen displays the three dimensional figures projected from the projector to give the appearance of the figures being within the fish tank.

A virtual fish tank assembly for displaying three dimensional aquatic creatures includes a housing structure. The housing structure is positioned adjacent to a fish tank. A projector is coupled to an interior space of housing structure. A control module is in electric communication with the projector. The control module obtains data from a user, reads the data, and generates a plurality of three dimensional images. A power source is in electric communication with the projector and with the control module. The power source provides power to the projector and to the control module. A screen has a peripheral surface and a back surface. The peripheral surface attaches to a respective one wall of the plurality of walls of the fish tank. The screen displays the three dimensional figures projected from the projector to give the appearance of the figures being within the fish tank.