Abstract: Systems and devices for optimized structures for optical measurement are described. A wearable device may include a housing configured to house one or more sensors to acquire physiological data from a user. The wearable device may further include one or more light sources disposed on a surface of the housing and positioned to direct light into a tissue surface of the user and one or more detectors disposed on the surface of the housing and positioned to receive light from the one or more light sources along a plurality of optical paths where a first optical path may be through the tissue surface and a second optical path may be directly from the one or more light sources. The wearable device may include one or more light blocking components disposed on a surface of the housing that are configured to block stray light along the second optical path.

Abstract: A method and computer system for integrating an antenna radiator during the manufacturing of an electronic device comprising providing a first chassis component, providing the radiator into the first chassis and providing a second chassis component over the radiator so as to integrate it between the first and the second chassis components (e.g., using a two-shot molding technique). A chassis may be defined by at least the first and the second chassis elements. A mobile device having networking capabilities comprising an antenna comprising a radiator and a hardware module for providing a function other than the networking capabilities to the mobile device. The radiator is at least partially integrated with the hardware module. The hardware module may further integrate a connector. The hardware module may be a structural chassis of the mobile device and the chassis may further integrate additional components.