Elvira Johanna Maria Paulussen,Hugo Johan Cornelissen
申请号：
US15475967
公开号：
US20170202466A1
申请日:
2017.03.31
申请国别(地区):
US
年份:
2017
代理人:
摘要：
An optical vital signs sensor configured to measure or determine vital signs of a user comprises a light source configured to generate a light beam having an angular range of angles of incidence. The light beam is directed towards the skin of the user. A photo detector is provided and is configured to detect light which is indicative of a reflection of the light beam from the light source in or from the skin of the user. The light source and the photo detector are arranged adjacent to each other and on the same side of the skin of the user. A light shaping unit is configured to shape the light beam of the light source before the light beam enters the skin by limiting the angular range of angle of incidence to less than 20°.
