Topic Actually the jewel brightness measurement equipment which can measure at the precision which stabilizes with the size and the quantity of light of the jewel which shines when light is received in the same way objectively is offered. SolutionsMaking use of the paraboloidal screen, you put in place the jewel which it should measure in that focus, parallel light to the direction which at least is vertical to the said medial axis from the medial axis of the paraboloidal screen, at the same time, at least 90 degrees turning with the incident direction and the said jewel of the said parallel light at least relatively, you analyze the image pickup data of the light where it irradiates to the aforementioned jewel, at that time is generated from the said jewel and is projected to the aforementioned paraboloidal screen, you calculate with the size and the quantity of the light where the said jewel radiates Choice figure Drawing 1
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