PURPOSE:To execute efficiently an experimenting process by providing a left eye use picture and a right eye use picture which have cut off a part of a lighting apparatus in a picture photographed at the same distance as a distance between a left eye and a right eye, a lighting apparatus installed at two upper and lower parts in front of the respective pictures, and a lighting apparatus installed in the rear of the respective pictures. CONSTITUTION:An intensity of illumination of a viewing environment is set optionally by using a lighting apparatus 9 and 15 installed at two upper and lower parts in front of a left eye use picture 7 and a right eye use picture 13 and adjusting a luminance of the left eye use picture and the right eye use picture, a luminance of a part 9 and 14 which have cut off the lighting apparatus in the left eye use picture and the right eye use picture is set optionally by using a lighting apparatus 12 and 18 installed in the rear of a light shielding plate, and a left eye use viewing environment condition setting part part 3 and a right eye use viewing environment condition setting part 4 are presented to both eyes 6 of an observer through two pieces of reflecting mirrors 1, 2, and an eyepiece part 5. In this way, this device not only can set optionally a luminance of the lighting apparatus installed in the viewing environment, independently from a luminance of the viewing environment, but also has an effect for executing a multi-purpose viewing environment evaluating experiment by replacing the picture.
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