Light emitting diode color resolution testing
US10612978B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/283
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Technical solutions are described for testing a light emitting diode (LED) device. An example method includes driving, by a controller, a filter unit to filter a light from the LED device using a first filter. The method further includes, in response to a sensor not receiving a measurable signal because of the first filter, driving, by the controller, the filter unit to filter the light using a second filter. Further, in response to the sensor not receiving the measureable signal because of the second filter, the method includes outputting an indication that the LED device is rejected. Further, in response to the sensor receiving the measureable signal, the method includes outputting an indication that the LED device is of a color representative of the second filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.