An image projection device which can correctly discern content of touch operation when a user performs various kinds of touch operation on an image projected on a projection screen is provided. An imaging unit is configured to image the image projected on the projection screen and acquire image data. A reference data generating unit is configured to generate reference data specifying a position and a size of the image projected on the projection. An image data extracting unit is configured to extract image data in which a finger or a pointer with which a user performs operation on the image projected on the projection screen exists is focused in the image data obtained by the imaging unit. A position data generating unit is configured to generate position data for specifying a position of the finger or the pointer in the imaging range of the imaging unit.

The disclosure relates to a projection system and an operation method thereof. The projection system includes a central control platform and a projection apparatus. The central control platform generates a sequence signal according to a self-defined setting. The projection apparatus is coupled to the central control platform and includes a power circuit, a first processing circuit, and an optical engine module. The power circuit passes the sequence signal through an energy storage element to generate a power supply. The first processing circuit performs an operation based on the power supply to generate a decoding result according to the sequence signal. The optical engine module obtains image information according to the decoding result and generates a display image according to the image information.

A display device for displaying image information including an image generator circuit and a photo-switchable screen is provided. The image generator circuit outputs an output image. The photo-switchable screen operates in a first operation mode or a second operation mode. In response to the photo-switchable screen operating in the first operation mode, the photo-switchable screen has a first light-transmittance, and the photo-switchable screen generates the image information according to the output image. In response to the photo-switchable screen operating in the second operation mode, the photo-switchable screen has a second light-transmittance. The first light-transmittance is less than the second light-transmittance.

Provided is an electro-optical device including an electro-optical panel that includes a display region, a holder that holds the electro-optical panel, a first temperature detecting element that is disposed on the electro-optical panel and detects the temperature of the electro-optical panel, and a second temperature detecting element that is disposed on the holder and detects the temperature of the holder. When four quadrants are defined by an X axis line passing through a center of the display region and a Y axis line passing through the center of the display region and orthogonal to the X axis line, the first temperature detecting element and the second temperature detecting element are disposed in the same quadrant.

Universally adjusting Ultra Short Throw (UST) projector credenza having a sliding UST compartment allowing for the cabinet to lie flush or near flush with a forward wall. The UST compartment expands out to a predetermined position to accommodate projecting images onto 100+ inch screens above. Each UST compartment comes with a cross-drilled and ventilated floating shelf that can be adjusted in three dimensions withing the compartment to allow adjustments. Ventilation holes in the shelf aerate the projector without obstructing ventilation. The UST compartment may have a low iron pane of glass over the projector to make it more discrete and hidden, but does not obstruct the image or color of the projected image passing through it in any way.

The present disclosure relates to a digital light processing (DLP) projection equipment and its electronic device. There proposes an electronic device for a digital cinema grade DLP projection equipment compatible with Digital Cinema Initiatives (DCI), including: a processing circuit configured to process an input video data; an output controller to control processed video signal so that the video signals are suitable for projection display via an output optics, wherein the processing circuit and the output controller are integrated on the same circuit board.

A projection apparatus includes a main body configured to project and display an image from a projection port of the main body; and an operation detection apparatus detachably attached to the main body and configured to acquire operation information relating to an operation on a projection screen performed by an operator. The main body includes an attachment portion provided on a surface of the main body on which the projection port is provided. The attachment portion is a portion where the operation detection apparatus attached to the main body.

An electronic device may have input-output devices such as sensors, displays, wireless circuitry, and other electronic components mounted within a housing. The housing may have opposing front and rear walls. A display may be formed on a front side of the device and may be overlapped by a front housing wall such as a glass layer. Sensors and other components may be formed on a rear side of the device and may be overlapped by a rear housing wall. The rear housing wall may have a glass portion or other transparent structure through which projectors project images onto nearby surfaces and through which image sensors and other optical sensors receive light. The housing may be supported by a stand. An electrical component in the stand may interact with an electronic device on the stand. Wireless circuitry in an external item may wirelessly couple to wireless circuitry within the housing.

A control method applied in a display device is provided. The display device includes an image generator and a screen. The image generator is directed to output an output image. The screen is directed to operate in a first operation mode or a second operation mode. The screen has a first light-transmittance in the first operation mode and has a second light-transmittance in the second operation mode. The first light-transmittance is different from the second light-transmittance. In response to the screen operating in the first operation mode or the second operation mode, the image generator outputs the output image onto the screen in a light-emitting period and stops outputting the output image onto the screen in a non-light-emitting period after the light-emitting period.

A projection lens includes: first to fifth lenses; a light shielding ring; an aperture stop; and a lens barrel. The light shielding ring is rotated in a circumferential direction of the lens barrel by a rotation mechanism. In a case where an image forming panel is shifted with respect to an optical axis of the projection lens, a part, through which the light passes, is biased in the projection lens, whereby temperature distribution occurs in the lens barrel in the direction perpendicular to the optical axis. The thermal deformation of the high temperature side of the lens barrel due to the temperature distribution is greater than that on the low temperature side. The respective lenses may be tilted due to thermal deformation. By rotating the light shielding ring through the rotation mechanism, the temperature increases uniformly in the circumferential direction of the light shielding ring.