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: The specification and drawings present a new apparatus and method for joining a window assembly (e.g., a glass window assembly) in electronic devices using optical/laser welding. A window assembly, transparent to an optical beam, may comprise an optical window such as glass window with a laminated layer (e.g., made of plastic) glued to a backside of the optical window and a back print ink layer between portions of the optical window and of the laminated layer. This window assembly may be attached to a frame such as a plastic frame, non-transparent to the optical beam, having at least one boundary with the laminated plastic layer of the window assembly using a welding joint at the at least one boundary made by the optical beam propagating transparently (with negligible optical absorption) through the window assembly and absorbed by the plastic frame.

Abstract: The specification and drawings present a new apparatus and method for joining a window assembly (e.g., a glass window assembly) in electronic devices using optical/laser welding. A window assembly, transparent to an optical beam, may comprise an optical window such as glass window with a laminated layer (e.g., made of plastic) glued to a backside of the optical window and a back print ink layer between portions of the optical window and of the laminated layer. This window assembly may be attached to a frame such as a plastic frame, non-transparent to the optical beam, having at least one boundary with the laminated plastic layer of the window assembly using a welding joint at the at least one boundary made by the optical beam propagating transparently (with negligible optical absorption) through the window assembly and absorbed by the plastic frame.

Abstract: Disclosed herein is a shield for electrically shielding an electronic device. The shield includes a molded base and a first coating layer. The molded base includes a first portion and a second portion. The second portion comprises a resilient material connected to the first portion by being molded or extruded onto the first portion. The first coating layer is deposited on the second portion. The first coating layer includes an electrically conductive material.