Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Akihiro Kitaguchi

Yoshinori Asamura

Shigenori Shibue

Toshitaka Tachibana

Yuta Imanishi

Naoyuki Machida

Kensuke Odagiri

A projection image display includes: a screen unit that has a screen; a projection unit that projects an image onto the screen from a back surface of the screen; a housing that houses the projection unit; a slide mechanism that supports the screen unit such that the screen unit moves in an anterior-posterior direction; a locking mechanism that restricts a movement of the slide mechanism; and an adjustment mechanism that is capable of adjusting a position of the screen unit with respect to the housing from the outside while the locking mechanism restricts the movement of the slide mechanism.

Projection image display

A mount portion has a rectangular outside shape, and has an opening in its center part that can be fitted by hanging on mounting brackets fixed on a wall surface. An installation surface has mount fixing holes in its upper part and mount fixing holes in its lower part. Default positioning holes are provided adjacent to the mount fixing holes. In screwing, the mount fixing holes have given screwing position freedom. The regions of the default positioning holes have smaller opening areas than the regions of the mount fixing holes.

Wall-mounted attaching apparatus

A projection type image display device of the present invention includes: a screen unit with a screen onto which images are projected; a projection unit for projecting images onto the screen from the rear surface of the screen; right and left slide mechanisms as a pair for supporting the screen unit in a manner that allows the screen unit to move in a direction approximately normal to the screen; and a link shaft for linking the right and left slide mechanisms, and for moving the right and left mechanisms in synchronization with each other.

Projection type image display device

An object of the present invention is to provide a position detecting device that allows simultaneous use by a plurality of users by recognizing positional information about a plurality of pointers and associating the pointers and the users. A position detecting device of the invention includes a rear projector that projects an image, a projection screen that displays the image projected from the rear projector, imaging means that is located near the rear projector and that takes an image of light rays emitted from pointers, from the rear of the projection screen, and coordinate calculating means that analyzes the image taken by the imaging means to detect the two-dimensional positions in the detection areas where the light rays from the pointers are detected.

Position detecting device

A projection display includes a projection unit projecting an image on a screen, an image processor capable of adjusting an image display area where an image is projected on the screen by processing an image signal to be input to the projection unit, and an image-outline adjusting mechanism supporting the projection unit and capable of adjusting the image display area by positioning the projection unit. The image processor is capable of adjusting the image display area in one translational degree of freedom, and the image-outline adjusting mechanism is capable of positioning the projection unit in five degrees of freedom except for one translational degree of freedom.

Projection display with mechanism and image processor for adjusting an image in six degrees of freedom, and adjusting method thereof

A projection display apparatus () includes slide bases () which are able to protrude from a housing (). A screen unit () is supported by rotation plates () rotatably provided on the slide bases (). The attaching and detaching operations of the screen unit () can be performed in a state where the slide bases () protrude from the housing () and the rotation plates () rotate to an operating position. In this operating position, the screen unit () is supported by the rotation plates () from below, so that the screen unit () can be prevented from being dropped on the floor, and therefore the reliability of the operations can be enhanced.

Growing community of inventors

Tokyo, Japan

Akihiro Kitaguchi