Patent Number: 7,825,611

Title: Illumination adjusting device, illumination system using the same and illumination adjusting method

Abstract: An illumination adjusting device for receiving power from a power supply and supplying output voltage to a lighting unit is provided herein. The illumination adjusting device includes a detector for detecting ambient illumination intensity and generating an ambient illumination value according to the ambient illumination intensity; a comparator for comparing the ambient illumination value with a predetermined value, the comparator outputting a first power signal when the ambient illumination value is lower than a predetermined value; an adjustor for adjusting the output voltage according to the first power signal, as a result, light emitted by the lighting unit is controlled within a predetermined illumination intensity range. A related illumination adjusting method is also provided.

Inventors: Shan; Jiang-Feng (Shenzhen, CN), Ding; Lin-Kun (Shenzhen, CN), Wong; Shih-Fang (Taipei Hsien, TW)

Assignee: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.

International Classification: G05F 1/00 (20060101)

Expiration Date: 2019-11-02 0:00:00