PROBLEM TO BE SOLVED: To provide an entire light quantity measuring system capable of measuring the entire light quantity of a light source which is mounted on a substrate even under a bright environment.;SOLUTION: The entire light quantity measuring system comprises a first housing 101 having a reflecting surface portion 113 reflecting light on its inner surface, a first opening 111 through which direct light and reflection light pass, and a first insertion hole 112 for displacing a light source 300; a second housing 102 having a second opening 121, a second insertion hole 122, and an absorbing surface portion 123 absorbing light on its inner surface; detecting means 103 detecting first light quantity and second light quantity; computing means 104 calculating the entire light quantity; a flexible first light-shielding member 141 preventing stray light from entering a first space 110; and a flexible second light-shielding member 142 preventing stray light from entering a second space 120.;COPYRIGHT: (C)2012,JPO&INPIT
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