Apple Inc.

Maxim Integrated Products, Inc.

Arpit B Mehta

Daniel S Christman

Richard I Olsen

Vrinda Thareja

Guocheng Shao

Tobias J Harrison-Noonan

An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. Control circuitry in the electronic device may adjust the brightness level of an image being displayed by the display based on ambient light measurements from the ambient light sensor. The ambient light sensor may be formed from an ambient light sensor module that is aligned with an opening in an opaque masking layer in the display. One or more antireflection layers may be interposed between an inwardly facing surface of the display and an opposing external surface of the ambient light sensor module. The ambient light sensor module may have a light attenuator and other optical structures.

Electronic devices having light sensor modules overlapped by displays

This relates to one or more integrated photodiodes on a back surface of a PPG device. The one or more integrated photodiodes can reduce the gap between one or more windows and the active area of the photodiode(s) to increase the PPG signal strength without affecting the depth of light penetration into skin tissue. In some examples, the photodiode stackup can contact the surface of the windows. In some examples, the photodiode stackups can exclude a separate substrate. In some examples, the photodiode stackup can be deposited on the inner surface of the windows opposite the outer surface of the device. In some examples, the photodiode stackup can be deposited on the back surface and/or outer surface of the device. In this manner, PPG sensors can be included in the device without the need for extra layers and measurement accuracy can be improved due to lower light loss.

Integrated photodiode

An integrated circuit device includes an insulating body provided with a number of electrically conductive leads and having a surface provided with a red LED aperture, an IR LED aperture and a photodetector aperture. The insulating body also includes an optical isolator optically separating the photodetector aperture from the red LED aperture and the IR LED aperture. A red LED is aligned with the red LED aperture, an IR LED is aligned with the IR LED aperture, and a photodetector is aligned with the photodetector aperture.

Heart rate and blood oxygen monitoring system

A system includes a sensor device configured to detect a touch pressure dependent characteristic of a body part of a user while the user touches a touch surface with the body part. The system also includes an image capture device configured to capture an image of the body part of the user while the user touches the touch surface. The system further includes a processor configured to associate the image with an amount of pressure exerted on the touch surface by the user. The processor is also configured to compare the amount of pressure exerted on the touch surface to a desired amount of pressure associated with the user for the sensor device, and initiate compensation for the touch pressure dependent characteristic based upon the comparison.

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Fremont, CA, United States of America

Arpit B Mehta