| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that the evaluation precision of the directivity is degraded by dispersion of characteristics of objective lens etc. , placed in the light path of the collimated light. SOLUTION: In the directivity evaluation system 10 for the collimated light, the imaging element 12 directly receives the collimated light 22 without light conversion means such as objective lens. The imaging element 12 receives the collimated light 22 collimated by the pin hole 30 and lens 34 without again refracting with a means such as objective lens etc. , with the state as kept with the directivity. The imaging element 12 outputs the illuminance distribution of the collimated light 22, from the illuminance distribution, the directivity of the collimated light 22 is evaluated. COPYRIGHT: (C)2007,JPO&INPIT
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