| http://www.w3.org/ns/prov#value | - For example, when the light receiving patterns of the 0th order reflected light from the other information surface 12 are overlapped with areas where the ???1st order reflected light is changed to a circular shape or elliptical shape in the light-receiving areas E and F, the other-order light reception prohibited areas 15 are disposed on areas except the areas where the ???1st order reflected ligh
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