Method for measuring illuminance of lamp

Details Method for measuring illuminance of lamp Method for measuring illuminance of lamp

2008-12-09

2011-11-01

Lauchman, Layla (Department: 2877)

Optics: measuring and testing

Lamp beam direction or pattern

C356S213000

Reexamination Certificate

active

08049874

ABSTRACT:
A method for measuring illuminance of a lamp utilizes at least one illuminance meter and a rotary apparatus. The lamp is installed on the rotary apparatus. The lamp emits light and projects onto an irradiation area. A measurement area is defined from within the irradiation area. The measurement area is evenly divided into n sub-measurement areas, wherein n is a natural number. The n sub-measurement areas are centrosymmetric. At least one illuminance meter measuring illuminance of the lamp is disposed on one of the n sub-measurement areas. The rotary apparatus drives the lamp to rotate 360
° in turn. The single illuminance meter measures illuminance of the lamp in other (n−1) sub-measurement areas.

REFERENCES:
patent: 2006/0007428 (2006-01-01), Lin et al.
patent: 2009/0177426 (2009-07-01), Dodds et al.
patent: P2000-258246 (2000-09-01), None

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