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Concentric architecture for optical sensing

A technology of optical sensing and photodetector, which is applied in the direction of optical sensor, using light for diagnosis, measuring pulse rate/heart rate, etc., and can solve problems affecting the determination of user's physiological information

Active Publication Date: 2020-04-21
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, optical loss due to one or more components in the system may affect the determination of the user's physiological information

Method used

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  • Concentric architecture for optical sensing
  • Concentric architecture for optical sensing
  • Concentric architecture for optical sensing

Examples

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Embodiment Construction

[0020] In the following description of the examples, reference is made to the accompanying drawings, in which are shown by way of illustrations specific examples that may be practiced. It is to be understood that other examples may be utilized and structural changes may be made without departing from the scope of the respective examples. Numerous specific details are set forth in order to provide a thorough understanding of one or more aspects and / or features described or referenced herein. It will be apparent, however, to one skilled in the art that one or more aspects and / or features described or referenced herein may be practiced without some or all of these specific details. In other instances, well-known process steps and / or structures have not been described in detail so as not to obscure some of the aspects and / or features described or referenced herein.

[0021] Photoplethysmographic (PPG) signals may be measured by an optical sensing system to derive corresponding ph...

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Abstract

An electronic device including optical sensing with a concentric architecture and methods for operation thereof is disclosed. The concentric architecture can include light detector(s) arranged in a concentric manner around light emitter(s). In some examples, at least one light emitter can be located in the center of the device, and each light detector can be located the same separation distance from the light emitter. Each light detector can be arranged such that the separation distance from the centrally located light emitter can be greater than the separation distance from another light emitter. Examples of the disclosure further include a selective transparent layer overlaying the light detector(s). The selective transparent layer can include section(s) transparent to a first wavelengthrange and non- transparent to a second wavelength ranges. In some examples, the selective transparent layer can further include section(s) transparent to the second wavelength range.

Description

[0001] Related patent application cross-reference [0002] This patent application claims the benefit of US Provisional Patent Application 62 / 563,594, filed September 26, 2017, the entire disclosure of which is incorporated herein by reference for all purposes. technical field [0003] The present disclosure generally relates to structures for optical sensing. More particularly, the present disclosure relates to structures for an optical sensing unit comprising a plurality of photodetectors arranged concentrically around a plurality of photoemitters. Background technique [0004] Photoplethysmographic (PPG) signals may be measured by an optical sensing system to derive corresponding physiological signals (eg, pulse rate). In basic form, the optical sensing system may employ light emitters that emit light through apertures and / or windows into the user's tissue. Additionally, a light detector may be included to receive light through the aperture and / or window. The light re...

Claims

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Application Information

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IPC IPC(8): A61B5/024A61B5/00
CPCA61B5/0059A61B5/02416A61B5/02438A61B5/14551A61B5/0295A61B5/0261A61B5/681A61B5/02433A61B5/02444H01L25/167H01L31/02327H01L31/16A61B5/14542A61B2562/0242A61B2562/046A61B2562/0238
Inventor U·L·布洛克邵国成I·L·海罗米M·沙博诺-莱福特T·J·哈里森-努南
Owner APPLE INC