| http://www.w3.org/ns/prov#value | - Further, the operator may appropriately dispose an optical system such as an optical lens, a film having light polarizing function, a film for adjusting phase difference and an IR film, in the optical path shown by an arrow in the FIG. 21C. [0316]FIG. 21D is a diagram showing an example of the structure of the optical light source system 2801 of FIG. 21C. In the present embodiment the optical ligh
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