Patent ID: 7417665

Claim:
A stereoscopic image observing apparatus comprising: a first projected light illuminating portion which illuminates projected light of a first image; a second projected light illuminating portion having a parallax to the projected light of the first image, wherein the second projected light illuminating portion illuminates projected light of a second image with an illuminating axis approximately matching that of the projected light of the first image; a reflecting portion which applies and reflects the lens operation with a positive polarity to the projected light of the first and second images illuminated from the first projected light illuminating portion and the second projected light illuminating portion; a diffusion portion arranged in front of the reflecting portion, the diffusion portion including a light diffusion plate for diffusing the output positions of reflected light of the projected light of the first and second images illuminated from the first projected light illuminating portion and the second projected light illuminating portion; and a light diffusion plate controlling portion for controlling to rotate the light diffusion plate.