Patent ID: 7411588

Claim:
A display apparatus comprising: a lens for capturing light from a real world; a lens state control unit for controlling a state of said lens, the state including a focus; a storage unit for storing computer graphics object image data; a computer graphics object image generation unit for generating a computer graphics object image to be synthesized to an image captured via said lens by using the stored computer graphics object image data; a synthesis display unit for synthesizing the image captured via said lens and the generated computer graphics object image and displaying a synthetic image; and a judging unit for judging whether it is necessary to focus on the computer image, wherein, if it is judged by said judging unit that it is necessary to focus on the computer image, said lens state control unit controls to display the computer image without unsharpening the computer image, and if it is judged by said judging unit that it is not necessary to focus on the computer image, said lens state control unit controls to increase a degree of unsharpening of the computer image as a virtual distance to the computer image and a focus distance of said lens increase.