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US 6,334,691 B1Granted
Spread illuminating apparatus
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Abstract
Between the transparent substrate 1 and the light conductive member 2 disposed along and close to at least one side end of the transparent substrate 1, the optical path conversion plate 6 having the prism portion is disposed. Due to this optical conversion plate 6, the light from the light conductive member 2 is directed effectively toward the transparent substrate 1 .
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