In this manner, by adopting the reflective surfaces of which the light collecting position differs or by changing the height of right and left light guides, it is possible to make the change of light distribution rate smaller even though there is {HEAD ~ elevation} of {TAIL ~ the document} 
In this manner , by adopting the reflective surfaces of which the light collecting position differs or by changing the height of right and left light guides , it is possible to make the change of light distribution rate smaller even though there is { HEAD ~ elevation } of { TAIL ~ the document }
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