James Lee,Kuo Yang Wu,Wen Bing Hsu,Hsiang Ling Chung,Ching Jang Shyr,Tsung Hsun Yu,Hsiu Fen Wang
申请号：
US15246640
公开号：
US20170339480A1
申请日:
2016.08.25
申请国别(地区):
US
年份:
2017
代理人:
摘要：
An optical heart rate earphone includes a front housing, a circuit board assembly, a rear housing assembled to a rear end of the front housing, and a light pipe. The front housing has a sound tube. At least one portion of the sound tube forms at least one light transmission gap. The circuit board assembly includes a circuit board and at least one optical sensor. The at least one optical sensor is corresponding to the at least one light transmission gap. The light pipe has a circular base. At least one portion of a periphery of the base protrudes rearward to form at least one transmittance slice. The light pipe is assembled to the sound tube. The at least one transmittance slice is wedged in the at least one light transmission gap.
