公开(公告)号：US10690591B2

公开(公告)日：2020-06-23

申请号：US15751454

申请日：2016-08-29

Applicant: Apple Inc.

Inventor： Robert Chen ,  Trent D. Ridder ,  Miikka M. Kangas ,  David I. Simon ,  Matthew A. Terrel

IPC: G01N21/27 ,  G01N21/31

Abstract: Methods and systems for measurement time distribution for referencing schemes are disclosed. The disclosed methods and systems can be capable of dynamically changing the measurement time distribution based on the sample signal, reference signal, noise levels, and SNR. The methods and systems can be configured with a plurality of measurement states, including a sample measurement state, reference measurement state, and dark measurement state. In some examples, the measurement time distribution scheme can be based on the operating wavelength, the measurement location at the sampling interface, and/or targeted SNR. Examples of the disclosure further include systems and methods for measuring the different measurement states concurrently. Moreover, the systems and methods can include a high-frequency detector to eliminate or reduce decorrelated noise fluctuations that can lower the SNR.

公开(公告)号：US10670466B2

公开(公告)日：2020-06-02

申请号：US16396217

申请日：2019-04-26

Applicant: Apple Inc.

Inventor： Miikka M. Kangas ,  Michael J. Bishop ,  Robert Chen ,  David I. Simon ,  Harold L. Sontag, III ,  George Dee Skidmore

IPC: G01J5/20 ,  G01J5/08 ,  G01J5/02 ,  G01J4/04

Abstract: This relates to sensor systems, detectors, imagers, and readout integrated circuits (ROICs) configured to selectively detect one or more frequencies or polarizations of light, capable of operating with a wide dynamic range, or any combination thereof. In some examples, the detector can include one or more light absorbers; the patterns and/or properties of a light absorber can be configured based on the desired measurement wavelength range and/or polarization direction. In some examples, the detector can comprise a plurality of at least partially overlapping light absorbers for enhanced dynamic range detection. In some examples, the detector can be capable of electrostatic tuning for one or more flux levels by varying the response time or sensitivity to account for various flux levels. In some examples, the ROIC can be capable of dynamically adjusting at least one of the frame rate integrating capacitance, and power of the illumination source.

公开(公告)号：US09939322B2

公开(公告)日：2018-04-10

申请号：US15542425

申请日：2016-01-08

Applicant: Apple Inc.

Inventor： Miikka M. Kangas ,  Michael J. Bishop ,  Robert Chen ,  David I. Simon ,  Harold L. Sontag, III ,  George Dee Skidmore

IPC: G01J5/08 ,  G01J4/04 ,  G01J5/20

CPC classification number: G01J5/0825 ,  G01J4/04 ,  G01J5/0225 ,  G01J5/0846 ,  G01J5/0853 ,  G01J5/20 ,  G01J2005/202

Abstract: This relates to sensor systems, detectors, imagers, and readout integrated circuits (ROICs) configured to selectively detect one or more frequencies or polarizations of light, capable of operating with a wide dynamic range, or any combination thereof. In some examples, the detector can include one or more light absorbers; the patterns and/or properties of a light absorber can be configured based on the desired measurement wavelength range and/or polarization direction. In some examples, the detector can comprise a plurality of at least partially overlapping light absorbers for enhanced dynamic range detection. In some examples, the detector can be capable of electrostatic tuning for one or more flux levels by varying the response time or sensitivity to account for various flux levels. In some examples, the ROIC can be capable of dynamically adjusting at least one of the frame rate integrating capacitance, and power of the illumination source.