Image display apparatus and image photographing apparatus therefor

An image display apparatus comprising:

• a first flat display panel for displaying first image information with a plurality of pixels;
• a second flat display panel for displaying second image information with a plurality of pixels;
• visual axis detecting means for detecting an observer's visual axis direction;
• head portion position detecting means for detecting the position of the observer's head position;
• optical means for combining a first image from said first flat display panel and a second image from said second flat display panel, wherein said second image has a size that is an integer multiple of a pixel pitch of said first image when said first and second images are combined;
• driving means for moving said second image with the pixel pitch of said first image based on an observer's visual axis direction output signal of said visual axis detecting means;
• and
• image information changing means for changing said first image information and said second image information on the basis of the output signal of said visual axis detecting means and an output signal of said head portion position detecting means.

An image display method comprising:

• first displaying step of displaying first image information by a first flat display panel having a plurality of pixels;
• second displaying step of displaying second image information by a second flat display panel having a plurality of pixels;
• visual axis detecting step of detecting an observer's visual axis direction;
• combining step of combining a first image from said first displaying step and a second image from said second displaying step, wherein said second image has a size that is an integer multiple of a pixel pitch of said first image when said first and second images are combined;
• and
• driving step of moving said second image with the pixel pitch of said first image based on an observer's visual axis direction signal of said visual axis detecting step.

An image display method comprising:

• first displaying step of displaying first image information by a first flat display panel having a plurality of pixels;
• second displaying step of displaying second image information by a second flat display panel having a plurality of pixels;
• visual axis detecting step of detecting an observer's visual axis direction;
• head portion position detecting step of detecting a position of an observer's head;
• combining step of combining a first image from said first displaying step and a second image from said second displaying step, wherein a pixel pitch of said first image is an integer multiple of a pixel pitch of said second image when said first and second images are combined;
• driving step of moving said second image with the pixel pitch of said first image based on an observer's visual axis direction output signal of said visual axis detecting step:
• and
• image information changing step of changing said first image information and said second image information on the basis of the output signal of said visual axis detecting step and an output signal of said head portion position detecting step.

An image display apparatus comprising:

• a first flat display panel for displaying first image information with a plurality of pixels;
• a second flat display panel for displaying second image information with a plurality of pixels, said second image information being part of said first image information;
• visual axis detecting means for detecting an observer's visual axis direction;
• optional means for combining a first image from said first flat display panel and a second image from said second flat display panel by superposing the second image on the first image, moving said second image relative to said first image in conformity with an output signal from said visual axis detecting means and turning it to the observer's pupil, and
• image display changing means for changing said first image information and said second image information on the basis of the output signal of said visual axis detecting means, wherein
• the pixel densities of said first image and said second image are adapted to each other at the boundary between the displayed images to make the marginal portion of said second image coincident with the boundary between the pixels of said first image when said images are combined, and wherein
• the adaptation of the pixel densities is maintained when the second image being superposed on the first image is moved in accordance with the detected observer's visual axis direction.