Abstract: A method is provided that includes receiving a data request from a requesting device requesting data from a data source, looking up, in a blockchain ledger, a transaction corresponding to the data request to validate the data request, forwarding the validated data request to a data server, receiving a data response from the data server in response to the data request, wherein the data response comprises the requested data from the data source, and forwarding the data response to the requesting device.

Abstract: A dual panel display has a housing, a first display panel, a second display panel, and a backlight module positioned between the first display panel and the fixing face of the housing. The backlight module includes a light guide panel, a light source, at least a transflective film and at least an optical property enhancement film between the light guide panel and the second display panel. The transflective film is positioned between the light guide panel and the fixing face for reflecting a part of light from the light guide sheet so that the part of light passes back into the light guide panel.

Abstract: A multi-function lens module includes a cylindrical first part and a second part. The first part includes a peripheral side wall and defines an inner space; and the first part has a central axis. The second part is received in the inner space of the first part. The first part is capable of rotating relative to the second part. The first part defines at lease two pairs of openings. Each pair of openings is symmetric about the central axis. A first pair of the openings is configured for accommodating first optical elements. A second pair of the openings is configured for accommodating second optical elements. The second part defines a first through hole. The first through hole receives a third optical element.

Abstract: A light guide plate includes a light incident surface, a light emission surface intersects with the light incident surface, and a bottom surface opposite to the light emission surface. The light incident surface includes at least a first light receiving region and at least a second light receiving region. The first light receiving region has a distinctly different structure in comparison to the second light receiving region. One end of the first light receiving region communicates with the light emission surface, and the other end of the light receiving region communicates with the bottom surface. One end of the second light receiving region communicates with the light emission surface and, the other end of light receiving region communicates with the light emission surface.

Abstract: A light guide plate includes a light incident surface, a light emission surface intersects with the light incident surface, and a bottom surface opposite to the light emission surface. The light incident surface includes at least a first light receiving region and at least a second light receiving region. The first light receiving region has a distinctly different structure in comparison to the second light receiving region. One end of the first light receiving region communicates with the light emission surface, and the other end of the light receiving region communicates with the bottom surface. One end of the second light receiving region communicates with the light emission surface and, the other end of light receiving region communicates with the light emission surface.

Abstract: An exemplary multi-function lens module includes a cylindrical first part and a second part. The second part is received in the first part. The first part is capable of rotating relative to the second part. The first part has a central axis. The first part defines at least two pairs of recesses therein. Each pair of recesses is symmetric about the central axis. A first pair of the recesses is configured for accommodating first optical elements therein. A second pair of the recesses is configured for accommodating second optical elements therein. The second part defines a first through hole therein. The first through hole receives a third optical element therein.

Abstract: A light guide plate (200) includes a block body (210) and a plurality of first prisms (220). The block body (210) has a light input surface (211), a light output surface (212) adjoining the light input surface (211) and a bottom surface (213) opposite to the light output surface (212). The light input surface (211) includes a plurality of flat portions (216) and at least one inwardly curved portion (215). The first prisms (220) are arranged on the inwardly curved portion (215) of the light input surface (211) and extend from the bottom surface (213) of the block body (210) to the light output surface (212) of the block body (210).

Abstract: A backlight unit includes a light guide plate having a light-incidence plane and a light-exit plane and at least a light emitting diode (LED) mixing package located in proximity to the light-incidence plane for providing lights to the backlight unit. The LED mixing package includes at least a first color LED chip, at least a first color compensation film corresponding to the first color LED chip, at least a second color LED chip, and at least a second color compensation film corresponding to the second color LED chip, in which the first color compensation film and the second color compensation film are located on the light-incidence plane of the backlight unit. The backlight unit further includes at least a spectrum sensor disposed on the light-exit plane of the backlight unit.

Abstract: A dual panel display has a backlight module, a first display panel, a second display panel, and a plurality of reflective polarizers deposited between the first light-exit surface and the first display panel or the second light exit surface and the second display panel of the light guide plate in the backlight module.

Abstract: A dual panel display has a housing, a first display panel, a second display panel, and a backlight module positioned between the first display panel and the fixing face of the housing. The backlight module includes a light guide panel, a light source, at least a transflective film and at least an optical property enhancement film between the light guide panel and the second display panel. The transflective film is positioned between the light guide panel and the fixing face for reflecting a part of light from the light guide sheet so that the part of light passes back into the light guide panel.