| http://www.w3.org/ns/prov#value | - In accordance with this embodiment, the light absorbing action is provided with only the filters 307R, 307G, 307B. However, the effect of the item 1. is further enhanced by adding the shield plates or the filters exhibiting the action to absorb the white light or specific color light to any areas other than the area through which not the scattered light but the normal light beam passes.
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