Invention Grant
- Patent Title: Color error corrected segmented LED array
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Application No.: US16370268Application Date: 2019-03-29
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Publication No.: US11204539B2Publication Date: 2021-12-21
- Inventor: Nicola Bettina Pfeffer , Arjen Gerben Van Der Sijde , Brendan Moran
- Applicant: Lumileds LLC
- Applicant Address: US CA San Jose
- Assignee: Lumileds LLC
- Current Assignee: Lumileds LLC
- Current Assignee Address: US CA San Jose
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H05B33/08
- IPC: H05B33/08 ; G03B15/05 ; H05B45/24 ; H05B45/20 ; H05B47/11 ; H01L27/15 ; H01L33/50

Abstract:
Methods and systems for color error correction for a segmented LED array are disclosed. A method includes calculating a target luminance for LED segments in a segmented LED array based on an initial luminance pattern, determining a luminance ratio based on the target luminance, the luminance ratio defined as a ratio of a primary luminance value of the primary LED segment to a secondary luminance value of the at least one adjacent LED segment, and comparing the luminance ratio to a predefined threshold ratio. If the luminance ratio is greater than or equal to the predefined ratio, then the secondary luminance value of the at least one adjacent LED segment is maintained. If the luminance ratio is less than the predefined ratio, then the secondary luminance value of the at least one adjacent LED segment is increased.
Public/Granted literature
- US20190297702A1 COLOR ERROR CORRECTED SEGMENTED LED ARRAY Public/Granted day:2019-09-26
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