An image display device a light source, an image display layer and a refractive structure layer. The light source emits a light beam. The image display layer is located over the light source. The image display layer includes plural pattern sections. The refractive structure layer has a reference plane. When the light beam is irradiated on the refractive structure layer and there is a first angle between the light beam and the reference plane, the light beam is guided to a first pattern section, so that a first image is displayed on the image display layer. When the light beam is irradiated on the refractive structure layer and there is a second angle between the light beam and the reference plane, the light beam is guided to a second pattern section, so that a second image is displayed on the image display layer.

An optical scanning device includes a housing, a transmissive member, a wire-shaped member, a driving portion, a cleaning holder, a cleaning member, a stopper, and a control portion. The control portion is capable of executing a cleaning mode including at least one of a forward travel operation of controlling the wire-shaped member to travel in a first direction so that the cleaning holder moves along the transmissive member and a backward travel operation of, after executing the forward travel operation, controlling the wire-shaped member to travel in a second direction so that the cleaning holder moves in an opposite direction to a direction of the forward travel operation. The control portion executes a load releasing operation of controlling the cleaning holder to move by a prescribed amount in an opposite direction to the direction of the forward travel operation or the direction of the backward travel operation.

An optical scanning device includes a housing, a transmissive member, a wire-shaped member, a driving portion, a cleaning holder, a cleaning member, a stopper, and a control portion. The control portion is capable of executing a cleaning mode including at least one of a forward travel operation of controlling the wire-shaped member to travel in a first direction so that the cleaning holder moves along the transmissive member and a backward travel operation of, after executing the forward travel operation, controlling the wire-shaped member to travel in a second direction so that the cleaning holder moves in an opposite direction to a direction of the forward travel operation. The control portion executes a load releasing operation of controlling the cleaning holder to move by a prescribed amount in an opposite direction to the direction of the forward travel operation or the direction of the backward travel operation.

A projection screen for forming an image by converting light pixel pulses from a digital projector comprises a three-dimensional sheet matrix made of a transparent composite. Functional inclusions for light-scattering, light-absorbing and luminescence of the light from the projector are distributed through the matrix thickness to thereby enable that the conversion of the light pulses into the image for direct perception by eyesight be performed throughout the volume of the matrix. The matrix thickness between the frontal and rear surfaces of the matrix is selected for digital image sources between an inter-pixel grid width and tenfold diagonal size of a pixel of a digitized image on the screen. The object of the invention is to reproduce identifying features of informational models of real objects in a wide angle of image perception under side lighting.

A projection screen for forming an image by converting light pixel pulses from a digital projector comprises a three-dimensional sheet matrix made of a transparent composite. Functional inclusions for light-scattering, light-absorbing and luminescence of the light from the projector are distributed through the matrix thickness to thereby enable that the conversion of the light pulses into the image for direct perception by eyesight be performed throughout the volume of the matrix. The matrix thickness between the frontal and rear surfaces of the matrix is selected for digital image sources between an inter-pixel grid width and tenfold diagonal size of a pixel of a digitized image on the screen. The object of the invention is to reproduce identifying features of informational models of real objects in a wide angle of image perception under side lighting.

A rear-projection display system and a rear-projection screen are provided. The system includes a projector, N light path turning systems, and a rear-projection screen, wherein the rear-projection screen includes a collimation lens layer including a target region and a Fresnel lens region; the projector is configured to emit first projected light which is incident directly onto the Fresnel lens region, and emit second projected light which is incident onto the N light path turning system; and the N light path turning systems are configured to receive the second projected light from the projector, and to have the second projected light incident onto the target region at a first angle less than the emitting angle of the second projected light.

A support system for moving a rollable material between a stored configuration and an unrolled configuration. The rollable material may be a projection screen, and the unrolled configuration may be a viewing configuration.

Provided are a screen frame and a laser projection display device. The screen frame includes a plurality of side frames that are connected end to end, where each two adjacent side frames of the plurality of side frames are connected by at least two connectors, and the at least two connectors are connected to the each two adjacent side frames by fasteners; the at least two connectors include a first connector and a second connector, and an inserting direction of a fastener on the first connector is perpendicular to a plane where the screen frame is located, and an inserting direction of a fastener on the second connector is parallel to the plane where the screen frame is located. The present disclosure can realize accurate alignment and joining relatively easily.

Provided are a screen frame and a laser projection display device. The screen frame includes a plurality of side frames that are connected end to end, where each two adjacent side frames of the plurality of side frames are connected by at least two connectors, and the at least two connectors are connected to the each two adjacent side frames by fasteners; the at least two connectors include a first connector and a second connector, and an inserting direction of a fastener on the first connector is perpendicular to a plane where the screen frame is located, and an inserting direction of a fastener on the second connector is parallel to the plane where the screen frame is located. The present disclosure can realize accurate alignment and joining relatively easily.

The present invention relates to display systems that use materials made from various arrangements of lenses and other optical materials. Careful design and use of these materials can be used to achieve display systems with many desirable visual effects having applicability in image and video displays, virtual reality, immersive environments, as well as in architecture, art, entertainment, and interactive systems.