发明名称 |
LED DEVICE COMPENSATION METHOD |
摘要 |
A method for controlling and compensating aging in an LED device includes measuring a performance change in light output of the LED device. The LED device is controlled with a first compensation algorithm derived from the measured performance change, during a first period, to effect a luminance change over time in the light output of the LED device. Subsequently, a second compensation algorithm, derived from the measured performance change, and different from the first compensation algorithm, during a second period, effects a second luminance change over time in the LED device's light output. The second luminance change over time in the second period is different from the first luminance change over time in the first period. Furthermore, the first and second periods together are less than the lifetime of the LED device. |
申请公布号 |
WO2008115349(A3) |
申请公布日期 |
2009.05.28 |
申请号 |
WO2008US02929 |
申请日期 |
2008.03.05 |
申请人 |
EASTMAN KODAK COMPANY;COK, RONALD STEVEN;LEON, FELIPE ANTONIO;LUDWICKI, JOHN EDWARD |
发明人 |
COK, RONALD STEVEN;LEON, FELIPE ANTONIO;LUDWICKI, JOHN EDWARD |
分类号 |
H05B33/08;G09G3/32 |
主分类号 |
H05B33/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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