Method and apparatus for measuring illumination characteristics of a luminaire
US9746370B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2014 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jan 16, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2001/4247
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and associated apparatus are disclosed for measuring illumination characteristics of a luminaire having unknown characteristics. The method includes steps of providing an array of calibrated photodetectors in known locations in proximity to a mounting location, and then illuminating the array with a luminaire having unknown illumination properties. The resulting data is used to calculate the luminous intensity vs. angle from the luminaire and the luminous flux of the luminaire. Methods of calibrating the measurement with a known luminaire are presented along with methods of determining the angular position of the detectors in the array. Color-sensitive detectors can be used to determine the angular distribution and average value of the luminaire's correlated color temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.