Patent ID: 7980702

Claim:
An image display device comprising: an image projection means which receives an image signal and outputs an image; a reflecting mirror which reflects the image outputted from said image projection means; an image display means having an arbitrarily-shaped projection plane on which the image reflected by said reflecting mirror is projected from a front side; an image signal processing means which performs a distortion correction to the image signal to be inputted into said image projection means so that the image can be displayed on said projection plane without distortion; a base for supporting at least said image projection means, said reflecting mirror, and said image display means; wherein the image display device is configured to be connected with an external camera to allow an observer to perform a predetermined work while observing the image taken by said external camera on said projection plane, said image display means having a curved projection plane, said image signal processing means receiving the image taken by said external camera and performing the distortion correction so that the image taken by said external camera can be displayed on said curved projection plane without distortion, said image projection means, said reflecting mirror, and said image display means are assembled in one to constitute a single moving unit, said image display device further comprising a lifting means capable of moving said moving unit in a vertical direction with respect to said base.