| 摘要 |
A structure for adjusting backlight brightness of an electronic apparatus includes an indicator cover with an optical window and a light detecting circuit board. The indicator cover with an optical window has a window disposed thereon. The light detecting circuit board is installed in the indicator cover with an optical window and disposed correspondingly to the window. In addition, the light detecting circuit board is electrically connected to the backlight module of the electronic apparatus and has a light detecting circuit disposed thereon. The light detecting circuit has a control unit, a light emitting unit, a driving unit, and a storage unit. The light emitting unit has a light emitting component inside the indicator cover and an ambient light detecting unit. Therefore, the control unit controls the light emitting component inside the indicator cover flickering, and a detecting signal is transmitted to the control unit and then compared to the stored parameter, thus adjusting backlight brightness according to the stored parameter by the control unit when the light emitting component inside the indicator cover is not lighted and then the ambient light detecting unit receives external ambient light through the window. |
