Patent ID: 8467046

Claim:
A goniophotometer comprising: a main rotating table, a sync-rotating table, a luminaire rotating table and light detecting tubes; the main rotating table includes a main base ( 1 - 1 ) and a main rotating axis ( 1 - 2 ) installed on the main base ( 1 - 1 ), the main rotating axis ( 1 - 2 ) is fixed with a main mirror arm ( 1 - 3 ), a main mirror ( 1 - 4 ) is installed on the main mirror arm ( 1 - 3 ); the sync-rotating table includes a sync-base ( 2 - 1 ), a sync-rotating axis ( 2 - 2 ) is installed on the sync-base ( 2 - 1 ), the sync-rotating axis ( 2 - 2 )is coaxial with the main rotating axis ( 1 - 2 ), a sync-mirror arm ( 2 - 3 ) is installed on the sync-rotating axis ( 2 - 2 ), a sync-mirror ( 2 - 4 ) is installed on the sync-mirror arm ( 2 - 3 ), the sync-mirror ( 2 - 4 ) is located on a reflection path of the main mirror ( 1 - 4 ), a reflection path of the sync-mirror ( 2 - 4 ) is located on the sync-rotating axis ( 2 - 2 ); the luminaire rotating table includes a luminaire fixture ( 3 - 1 ), and a luminaire rotating axis ( 3 - 2 ) installed on the luminaire fixture ( 3 - 1 ), the luminaire rotating axis ( 3 - 2 ) is perpendicular to the main rotating axis ( 1 - 2 ), the luminaire rotating axis ( 3 - 2 )is for fixedly connecting with a luminaire under test( 5 ); the light detecting tubes are installed at light path.