There is disclosed a three-dimensional display device including: a micro LED display panel, a light control component arranged at a light-emitting side of the micro LED display panel, and a control component electrically connected with the micro LED display panel and the light control component respectively; where the control component is configured to control the micro LED display panel to display, and to control the light control component to generate a parallax barrier matching with the micro LED display panel, in a three-dimensional display mode. The control component controls the light control component to generate the parallax barrier matching with the micro LED display panel, while controlling the micro LED display panel to display, and when light rays emitted by the micro LED display panel pass through the parallax barrier, a three-dimensional image can be displayed, so that a three-dimensional display can be achieved on the micro LED display panel.

A three-dimensional display system includes a first display and a second display spaced apart from the first display having one or more light sources configured to emit light and to illuminate the first display, where the first display is at least partially transparent such that the second display is visible through the first display. The three-dimensional display system includes a special effect system disposed at least in part between the first display and the second display and is configured to be activated to cause a special effect to be visible through the first display. The three-dimensional display system includes a controller communicatively coupled to the first display, the second display, and the special effect system.

A lithophane display unit includes a base having an opening formed in a base top surface. A receptacle extends downward from the opening into a portion of base. Display unit includes a light source positioned at or proximal to a bottom of receptacle. Display unit includes a stand piece having a top and a bottom. The bottom of stand piece is insertable into receptacle with the bottom of stand piece in proximity to light source. Stand piece includes a roughened surface formed on at least a portion of a front side of stand piece. Stand piece includes a pair of structures disposed on opposing sides of stand piece and extending from a top of stand piece to or proximate to the bottom of stand piece. The pair of structures includes a pair of slots extending from tops of the structures to bottoms of the structures. Slots may receive a lithophane.

A rotating display apparatus is provided. The rotating display apparatus includes a pixel array and a control device. The pixel array is capable of rotating around a rotation axis in the pixel array, the pixel array includes a plurality of pixel units, and the plurality of pixel units are arranged in a plurality of pixel columns distributed in a direction perpendicular to the rotation axis. Pixel units in each pixel column are arranged in a direction parallel to the rotation axis and operate at a same refresh frequency. A refresh frequency of pixel units in a pixel column close to the rotation axis is less than a refresh frequency of pixel units in a pixel column far away from the rotation axis. The control device is configured to control the pixel units in each pixel column to operate at a refresh frequency corresponding to the pixel column.

An outdoor marking product comprising a chlorophyll-based agent for highlighting living greenery. The chlorophyll-based agent can be non-detrimental to the health of the living greenery. When viewed by a viewer at a minimum predefined viewing distance, the living greenery treated with the chlorophyll-based agent can be visibly distinguishable from and shinier than neighboring untreated living greenery. When the viewer is nearer than the minimum predefined viewing distance, the difference in shine and color between the treated living greenery and the untreated living greenery can be substantially unnoticeable.

An improved advertising system can include a location having a substantially large expanse of living greenery, a predetermined design for an advertisement, and a chlorophyll-based agent. The location can be observable by viewers at a predefined minimum viewing distance. The chlorophyll-based agent can be used to paint the predetermined design on the living greenery. The chlorophyll-based agent can be non-detrimental to the health of the living greenery. The predetermined design painted on the living greenery with the chlorophyll-based agent can be only viewable by viewers at the predefined minimum viewing distance. Living greenery treated with the chlorophyll-based agent can be visibly distinguishable from and shinier than neighboring untreated living greenery. When a viewer is nearer than the minimum predefined viewing distance, a difference in shine and color between the treated living greenery and the untreated living greenery can be substantially unnoticeable.

A lithophane display unit includes a base having an opening formed in a base top surface. A receptacle extends downward from the opening into a portion of base. Display unit includes a light source positioned at or proximal to a bottom of receptacle. Display unit includes a stand piece having a top and a bottom. The bottom of stand piece is insertable into receptacle with the bottom of stand piece in proximity to light source. Stand piece includes a roughened surface formed on at least a portion of a front side of stand piece. Stand piece includes a pair of structures disposed on opposing sides of stand piece and extending from a top of stand piece to or proximate to the bottom of stand piece. The pair of structures includes a pair of slots extending from tops of the structures to bottoms of the structures. Slots may receive a lithophane.

A visual display system creates various visual and audible effects from the motion of light particulate matter, such as beads. The system makes use of a variable flow air array generation device that facilitates a variable flow air array within the chamber. The device includes three or more array sections and a controller. The array sections each contribute distinct but coordinated air flows that coalesce with each other into forming the variable flow air array within the chamber. The controller controls each of the array sections. The variable flow air array generated by the device agitates, fluidizes, suspends, or floats at least some of a plurality of beads in the chamber creating a dynamic display of beads within the chamber.

A system may include a processor and a memory. The memory may store instructions. The instructions, when executed by the processor, may cause the system to perform operations. The operations may include receiving a request for content from a client device. The operations may include determining a geographic location associated with the client device. The operations may include identifying content relevant to the geographic location. The operations may include generating a content package. The content package may include the identified content relevant to the geographic location. The operations may include transmitting the content package to the client device.

Motor-vehicle body part including a lenticular sheet made of transparent molded plastic material of a given refractive index (n) higher than 1 and a given thickness (e), includes an external face forming an array of substantially spherical microlenses of a given radius of curvature (R), said microlenses being arranged with a given pitch and, an internal face of the lenticular sheet, which bears an array of three-dimensional features that are arranged with the pitch of the array of microlenses. This array of features is formed from fractions of a whole three-dimensional feature of equal dimensions, two adjacent fractions of three-dimensional features being offset in the direction in question by a given phase shift, each of these fractions of three-dimensional features magnified by a given coefficient of magnification, are juxtaposed on the internal face of the lenticular sheet with a pitch corresponding to the pitch of the microlenses.