| 摘要 |
PROBLEM TO BE SOLVED: To reduce a difference in the deterioration speed of a plurality of LEDs.SOLUTION: The light-emitting control device includes: a light-emitting part 101 having an LED 10 and an LED 20; a light emission adjuster part 104 which adjusts each pulse width and current amplitude of the LED 10 and the LED 20, on the basis of the luminance of the LED 10 and the LED 20, respectively; and a light-emitting drive part 102 which drives the LED 10 and the LED 20 with pulse modulation, using the pulse width and the current amplitude adjusted by the light emission adjuster part 104. In the LED 10 and the LED 20 driven by the light-emitting drive part 102 with a predetermined pulse width and a predetermined current amplitude, when the luminance of the LED 10 is higher than the luminance of the light-emitting device of the LED 20, the light emission adjuster part 104 adjusts the current amplitude of the LED 10 to a value higher than the current amplitude of the LED 20, and further, adjusts the pulse width of the LED 10 to a value smaller than the pulse width of the LED 20.SELECTED DRAWING: Figure 1 |
