The invention relates to a holographic viewing device that enable printing or the like to be directly applied to a transmission hologram substrate without recourse to any frame for supporting and reinforcing a transmission hologram, thereby simplifying construction while enhancing aesthetic and decorative attributes, and a holographic viewing card incorporating it. The holographic viewing device enables a given image or message to be viewed near the positions of point light sources upon viewing the point light sources through a hologram, and comprises a transparent substrate 41, a hologram-formation layer 42 and a printing layer 45. The hologram-formation layer 42 may be any one of a phase type diffractive optical element having a relief structure 43 on its surface, a phase type diffractive optical element having a refractive index profile in its layer, and an amplitude type diffractive optical element having a transmittance profile in its layer.

The present invention discloses an article of jewelry, preferably a necklace with a hologram. The disclosed apparatus is provided with a hologram to display various things within the necklace and make it appear more stylish and enhancing the decorative appeal. The disclosed apparatus is capable of interacting with the multimedia devices like phone and can connect with them to display images and other things present in them via hologram in the necklace.

The present disclosure provides a holographic reproduction device, a holographic reproduction system, and a holographic display system. The holographic reproduction device includes a first light source configured to provide first coherent light; at least one electrically addressed liquid crystal display panel configured to display a holographic interferogram, so that the first coherent light is diffracted when the first coherent light transmits through the holographic interferogram to present a holographic reproduction image. A liquid crystal material of the electrically addressed liquid crystal display panel includes smectic liquid crystal.

The holographic Christmas tree is a holographic device. The holographic Christmas tree projects a three-dimensional image of a Christmas tree. The holographic Christmas tree includes a pedestal, a holographic projector, a substrate, and an image. The image is the three-dimensional image of a Christmas tree. The holographic substrate projects the image into the substrate. The pedestal contains the holographic projector.

A device, a system and a method of growing a virtual plant are provided. The device includes an acquisition module, configured to acquire control information; and a holographic image display module, configured to project and display a holographic image, and change a currently displayed holographic image according to the acquired control information, wherein the currently displayed holographic image includes a holographic image of a plant in a current growth stage when a user performs a planting operation including at least one of sowing the plant or maintaining the plant.

[Problem] Propagation of parallel light inside thin glass or plastic material had not been considered to be feasible because of difficulties in producing parallel light with large aspect ratio and in light-guiding it into thin material. For this reason, there had been a problem that holograms of edge-lit reproduction type were not being brought to practical use.

[Means for Solution] A compact, simple collimator optics has been successfully made by placing a holographic diffraction grating close to a diverging light source to propagate it at the critical angle inside the medium. By making an array of this diffraction grating it has become possible to propagate parallel light of any aspect ratio inside a thin plate. Hitherto unrealized image display devices and signal devices have become possible by using the holographic diffraction gratings as described in the foregoing, or other diffraction optical elements, to introduce light from a plurality of light sources, in combination with edge-lit reproduction type image holograms.

An anti-microbial packaging includes an innermost decontamination layer defining an inside and exposed surface of the packaging against which items in the packaging would contact. A fiber substrate layer is fixed to the innermost decontamination layer which itself is a metal or a metallic-alloy layer.

Disclosed herein is a consumer laser light device for producing laser light effects with the use of an optical effects wheel. In some respects, the disclosure is direct to a device for selectively providing one of multiple optical effects manipulating a laser beam, including an optical effects wheel positioned in the light path, the optical effects wheel having a first optical effect engraved on a first portion of the optical effects wheel and a second optical effect engraved on a second portion of the optical effects wheel, wherein the first portion and the second portion partially overlap. The optical effects wheel may be further modified to ensure that the device complies with consumer safety requirements for laser light devices.

A decoration element including a color developing layer including a light reflective layer, a light absorbing layer provided on the light reflective layer, and a convex portion or concave portion having an asymmetric-structured cross-section; an electrochromic device provided on any one surface of the color developing layer; and an in-mold label layer provided on the other surface of the color developing layer.

An information processing apparatus includes a controller that controls formation of an image to be formed in air so that the image and a user do not overlap each other in a space.