Title:
LEDの発光の温度依存性を安定化する方法
Document Type and Number:
Japanese Patent JP2007537583
Kind Code:
A
Abstract:
Method for correction of the temperature dependency of a light quantity L emitted by a light emitting diode (LED), being operated in pulsed mode with substantially constant pulse duration tP, and measured in a light detector, using a predetermined parameter X, correlated to the temperature T of the LED in a predetermined ratio, whereby a correction factor K is determined from the parameter X, preferably using a calibration table, especially preferred using an analytic predetermined function, whereby the measured emitted light quantity L is corrected for the temperature contingent fluctuations of the emitted light quantity, whereby the parameter X is determined from at least two output signals of the LED, which are related to each other in a predetermined manner.
Inventors:
Jurgen Stein
Guntram Pausch
Karen Sauke
Guntram Pausch
Karen Sauke
Application Number:
JP2007511882A
Publication Date:
December 20, 2007
Filing Date:
May 14, 2004
Export Citation:
Assignee:
ICX Radiation Gamebha
International Classes:
H01L33/00; H05B44/00; G12B13/00; H01J7/24
Domestic Patent References:
| JP2003188415A | 2003-07-04 | |||
| JP2000022263A | 2000-01-21 | |||
| JPH10321935A | 1998-12-04 |
Foreign References:
| US4160165A | 1979-07-03 |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro