Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Toshitaka Tachibana

Shigeru Takeuchi

Fusaaki Yamada

Kan Kawahara

Shinsuke Shikama

Eiichi Toide

Toshihide Kaneko

Akihiro Kitaguchi

Takashi Ueda

Masayuki Nishimitsu

The attachment device has a fixing member fixed to an attachment surface, first and second operating parts are configured to be manipulated from one side in the first direction parallel to the attachment surface, a first member fixed movably in the first direction relative to the fixing member, the first member being configured to move the display device in the first direction relative to the fixing member based on the operation amount of the first operating part, and a second member fixed rotatably relative to the first member, the second member being rotated based on the operation amount of the second operating part and being configured to move the display device in the second direction relative to the fixing member.

Attachment device for suspended member

In a back-projection image display device, image light outputted from a projection device is reflected by a reflection mirror held by a base frame and projected onto the back of a screen, to display an image on the screen. An image distortion correcting mechanism includes adjustment mechanisms that deform the reflection mirror, drive units that generate driving force necessary for the deformation of the reflection mirror by the adjustment mechanisms, and a control substrate that supplies power to the drive units. The control substrate supplies power to the drive units in response to a control signal supplied from a remote control unit. This allows pin distortion and barrel distortion, as well as trapezial distortion to be corrected by remote control in the back-projection image display device.

Image distortion correcting mechanism of back-projection image display device and back-projection image display device

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.

Projection display apparatus including a slide mechanism to prevent dropping of a screen during attachment

In a projection type picture display apparatus, three degrees of freedom out of six degrees of freedom which are adjusted by an angle-of-view adjusting mechanism are adjusted by using one adjusting plate (three-axis adjusting plate). The adjusting plate on which a projection unit is fixedly supported rotates the projection unit around the X-axis or Z-axis with respect to a screen disposed in parallel to the XY plane and translates the projection unit in the Y-axis direction to adjust three degrees of freedom. The adjusting plate has first, second and third support shafts extending in the Y-axis direction, a first adjusting shaft engageable with the first and second support shafts, and a second adjusting shaft engageable with the first and third support shafts, and adjusts the three degrees of freedom of the projection unit on the basis of the combination of the engagements.

Projection type picture display apparatus

In a projecting unit of a projector, a projecting tube is sealingly attached to a projecting tube frame by means of a packing member, a projecting lens is sealingly attached to a projecting lens frame by means of a packing member, and an image on the projecting tube is projected on a screen by the projecting lens. A packing member is interposed between and in engagement with the frames such that the frames are sealingly attached, and can slide against said packing member. The frames are secured to each other for use of the projecting unit, or separated from each other to permit adjustment of the space between the frames.

Projector display unit

A projection type display apparatus comprising three projection units for projecting red, green and blue images, each having a constitution wherein a holding member for holding a CRT and a holding member for holding a projection lens are separately constituted and these holding members are connected liquid-tightly by means of a soft packing sheet, while a space surrounded by the holding members and the packing sheet is filled with a coolant liquid.

Projection type display apparatus

Projecting-type display apparatus, wherein an image forming means frame is supported in such a manner as to be rotatable within a first plane perpendicular to an optical axis of a projection lens, and within a second plane including the optical axis and perpendicular to the first plane. A projecting-type display apparatus comprising means for changing the distance between an image forming means frame and a lens frame continuously or stepwise. A projecting-type display apparatus comprising means for changing the field angle of a projection unit having image forming means and projection lens with respect to a sreen cointinuously or stepwise.

Growing community of inventors

Tokyo, Japan

Toshitaka Tachibana