公开(公告)号：US09184698B1

公开(公告)日：2015-11-10

申请号：US14203639

申请日：2014-03-11

Applicant: Google Inc.

Inventor： Robert Francis Wiser ,  Daniel James Yeager

IPC: G02C7/04 ,  H03B28/00 ,  H03L7/06 ,  H03B17/00

CPC classification number: G02C7/04 ,  H03B17/00 ,  H03B28/00 ,  H03L7/06

Abstract: A system includes an oscillator referenced to a frequency extracted from periodic intensity modulations of incident light. The incident light can be intensity modulated based on the frequency of the AC voltage that powers artificial lighting. The system includes a light-sensitive element configured to generate an output signal indicative of an intensity of incident light and a controller. The controller can receive a first input signal based on the output signal from the light-sensitive element. In the presence of artificial lighting, the first input signal has a frequency based on a reference frequency at which an intensity of light incident on the light-sensitive element periodically varies. The controller can generate a control signal based in part on the reference frequency. The controller can provide the generated control signal to the adjustable oscillator to thereby adjust the oscillator frequency.

Abstract translation: 系统包括参考从入射光的周期性强度调制中提取的频率的振荡器。 入射光可以根据为人造照明供电的交流电压的频率进行强度调制。 该系统包括被配置为产生指示入射光强度的输出信号的光敏元件和控制器。 控制器可以基于来自感光元件的输出信号接收第一输入信号。 在存在人造照明的情况下，第一输入信号具有基于入射到感光元件上的光的周期性变化的参考频率的频率。 控制器可以部分地基于参考频率产生控制信号。 控制器可以将产生的控制信号提供给可调振荡器，从而调节振荡器频率。

公开(公告)号：US20150005597A1

公开(公告)日：2015-01-01

申请号：US14451730

申请日：2014-08-05

Applicant: Google Inc.

Inventor： Robert Francis Wiser ,  Brian Otis ,  Andrew Nelson

IPC: A61B5/145 ,  A61B5/1455 ,  G02C7/04

CPC classification number: A61B5/14532 ,  A61B5/1455 ,  G02C7/04 ,  G02C7/049 ,  G02C11/10

Abstract: A body-mountable device can include a transparent material and a substrate at least partially embedded in the transparent material. The transparent material can have a mounting surface and a surface opposite the mounting surface. A light source can be disposed on the substrate and configured to emit light through the surface opposite the mounting surface. The light source can be controlled by circuitry disposed on the substrate. The circuitry can be configured to receive modulation instructions and modulate the light emitted by the light source based on the modulation instructions.

Abstract translation: 身体安装装置可以包括透明材料和至少部分地嵌入透明材料中的基底。 透明材料可以具有安装表面和与安装表面相对的表面。 光源可以设置在基板上并且被配置为通过与安装表面相对的表面发光。 光源可以由设置在基板上的电路来控制。 电路可以被配置为接收调制指令并且基于调制指令调制由光源发射的光。

公开(公告)号：US20160058315A1

公开(公告)日：2016-03-03

申请号：US14473865

申请日：2014-08-29

Applicant: Google Inc.

Inventor： Robert Francis Wiser ,  Brian Otis

IPC: A61B5/024 ,  A61B5/00 ,  A61B5/1455 ,  G02C7/04

CPC classification number: A61B5/14555 ,  A61B5/0031 ,  A61B5/02427 ,  A61B5/14552 ,  A61B5/6821 ,  A61B2560/0214 ,  G02B1/043

Abstract: A body-mountable light sensing device includes a photodiode configured to receive light from a portion of subsurface vasculature and electronics configured to operate the photodiode to measure the received light. The electronics include a photodiode voltage source configured to reverse bias the photodiode, a current mirror, and a sigma-delta modulator configured to generate a digital output related to the received light and having a high resolution while using low power. The digital output could be used to determine a pulse rate or other properties of blood in the portion of subsurface vasculature by detecting absorption of ambient light by blood in the portion of subsurface vasculature. Components of the body-mountable device could be embedded in a polymeric material configured for mounting to a surface of an eye. The digital output and/or related information could be wirelessly communicated by the body-mountable device.

Abstract translation: 身体安装的光感测装置包括被配置为接收来自地下脉管系统的一部分的光的光电二极管和被配置为操作光电二极管以测量接收的光的电子器件。 电子器件包括被配置为反向偏置光电二极管的光电二极管电压源，电流镜和被配置为在使用低功率时产生与所接收的光相关并且具有高分辨率的数字输出的Σ-Δ调制器。 数字输出可以用于通过在地下脉管系统的部分中检测血液对环境光的吸收来确定地下脉管系统部分中血液的脉搏率或其他性质。 身体安装装置的部件可以嵌入被配置为安装到眼睛表面的聚合物材料中。 数字输出和/或相关信息可以由身体安装的设备无线地传送。

公开(公告)号：US08833934B1

公开(公告)日：2014-09-16

申请号：US13931394

申请日：2013-06-28

Applicant: Google Inc.

Inventor： Robert Francis Wiser ,  Brian Otis ,  Andrew Nelson

IPC: G02C7/04 ,  G02C11/00

CPC classification number: A61B5/14532 ,  A61B5/1455 ,  G02C7/04 ,  G02C7/049 ,  G02C11/10

Abstract: A body-mountable device can include a transparent material and a substrate at least partially embedded in the transparent material. The transparent material can have a mounting surface and a surface opposite the mounting surface. A light source can be disposed on the substrate and configured to emit light through the surface opposite the mounting surface. The light source can be controlled by circuitry disposed on the substrate. The circuitry can be configured to receive modulation instructions and modulate the light emitted by the light source based on the modulation instructions.

公开(公告)号：US20150362756A1

公开(公告)日：2015-12-17

申请号：US14737363

申请日：2015-06-11

Applicant: Google Inc.

Inventor： Robert Francis Wiser ,  Jennifer Han ,  Brian Otis ,  Nathan Pletcher

IPC: G02C7/08 ,  G02C7/04 ,  A61B3/113

CPC classification number: G02C7/083 ,  A61B3/113 ,  G02B27/0093 ,  G02C7/024 ,  G02C7/04 ,  G02C7/049

Abstract: Techniques and mechanisms for determining a direction of gaze by a user of an eye-mountable device. In an embodiment, the eye-mountable device includes a first circuit and a second circuit, each comprising a respective photodiode. The second circuit is configured to provide a light response profile that is more linear than a light response profile provided by the first circuit. Light sensing by the first circuit results in generation of a first signal indicating a level of ambient light in a surrounding environment. Other light sensing by the second circuit results in a second signal being generated. A direction of gaze by a cornea of the user is detected based at least in part on the first signal and the second signal. In another embodiment, the first signal is provided to configure the second circuit.

Abstract translation: 用于由眼睛安装的装置的用户确定注视方向的技术和机构。 在一个实施例中，眼睛安装装置包括第一电路和第二电路，每个包括相应的光电二极管。 第二电路被配置为提供比由第一电路提供的光响应曲线更线性的光响应曲线。 通过第一电路的光感测导致产生指示周围环境中的环境光的水平的第一信号。 由第二电路感测的其他光导致产生第二信号。 至少部分地基于第一信号和第二信号来检测由用户的角膜凝视的方向。 在另一个实施例中，提供第一信号以配置第二电路。

公开(公告)号：US08827445B1

公开(公告)日：2014-09-09

申请号：US14027969

申请日：2013-09-16

Applicant: Google Inc.

Inventor： Robert Francis Wiser ,  Brian Otis ,  Andrew Nelson

IPC: G02C7/04 ,  G02C11/00 ,  G02F1/01

CPC classification number: A61B5/14532 ,  A61B5/1455 ,  G02C7/04 ,  G02C7/049 ,  G02C11/10

Abstract: A body-mountable device can include a transparent material and a substrate at least partially embedded in the transparent material. The transparent material can have a mounting surface and a surface opposite the mounting surface. A light source can be disposed on the substrate and configured to emit light through the surface opposite the mounting surface. The light source can be controlled by circuitry disposed on the substrate. The circuitry can be configured to receive modulation instructions and modulate the light emitted by the light source based on the modulation instructions.

Abstract translation: 身体安装装置可以包括透明材料和至少部分地嵌入透明材料中的基底。 透明材料可以具有安装表面和与安装表面相对的表面。 光源可以设置在基板上并且被配置为通过与安装表面相对的表面发光。 光源可以由设置在基板上的电路来控制。 电路可以被配置为接收调制指令并且基于调制指令调制由光源发射的光。

公开(公告)号：US09366570B1

公开(公告)日：2016-06-14

申请号：US14202927

申请日：2014-03-10

Applicant: Google Inc.

Inventor： Robert Francis Wiser

IPC: G01J1/46 ,  G02C5/22 ,  G02C7/04

CPC classification number: G01J1/46 ,  G01J1/44 ,  G01J2001/4406 ,  G01J2001/446 ,  G02C7/04

Abstract: A body-mountable device equipped with a light sensor is disclosed. The light sensor includes a photodiode that operates in either a photoconductive mode or a photovoltaic mode depending on whether the photodiode is reverse biased. A group of switches are arranged to selectively couple the photodiode to first and second voltage sources to configure the photodiode to operate in either mode. A controller selects a mode of operation of the photodiode and controls the switches to cause the photodiode to respond to incident light while operating in the selected mode. The controller then obtains a measurement from the photodiode indicative of the intensity of light received during an exposure interval. The light sensor can thus include a single photodiode and yet be used to alternately obtain measurements based on the photoconductive response of the photodiode or based on the photovoltaic response of the photodiode.

Abstract translation: 公开了一种配备有光传感器的车身安装装置。 光传感器包括根据光电二极管是否被反向偏置而工作在光电导模式或光伏模式中的光电二极管。 一组开关被布置成选择性地将光电二极管耦合到第一和第二电压源以配置光电二极管在任一模式中操作。 控制器选择光电二极管的操作模式并控制开关，以在所选择的模式下操作时使光电二极管响应入射光。 然后，控制器从光电二极管获得指示在曝光间隔期间接收的光的强度的测量值。 因此，光传感器可以包括单个光电二极管，并且可以用于交替地基于光电二极管的光电导响应或基于光电二极管的光伏响应而获得测量。