| http://www.w3.org/ns/prov#value | - FIG. 7 is a graph showing an optical output for a forward current, and it would be noted from FIG. 7 that an optical output of the LED of this embodiment is significantly increased rather than the comparative example (4.3 times at 20 mA when a detect area of the optical detector is 1 mm2, and an optical output actually felt by a user will be more increased).
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