公开(公告)号：US10168218B2

公开(公告)日：2019-01-01

申请号：US15057423

申请日：2016-03-01

Applicant: Google Inc.

Inventor： Aveek Ravishekhar Purohit ,  Anurag Gupta

IPC: G01J5/34 ,  G01J5/00 ,  G01S17/02 ,  G01J5/02 ,  G01J5/08

Abstract: Methods and apparatus relating to a pyroelectric IR (PIR) motion sensor are provided. The provided PIR motion sensor can be used to determine an angular position of a moving person relative to the PIR motion sensor. The provided PIR motion sensor can be used to determine a proximity of a moving person relative to the PIR motion sensor. The angular position and the proximity can be used to identify a false alarm, estimate occupancy of a region, enable tracking of a target, and the like. In an example, the provided PIR motion sensor includes multiple PIR sensors and a Fresnel lens including lenslets configured to direct received IR radiation to at least two of the PIR sensors.

公开(公告)号：US20170358189A1

公开(公告)日：2017-12-14

申请号：US15597350

申请日：2017-05-17

Applicant: Google Inc.

Inventor： Mathias Schmidt ,  Adam Mittleman ,  Anurag Gupta ,  Mark Kraz ,  Nicholas Webb

IPC: G08B17/113 ,  G08B21/14 ,  G08B17/107 ,  G08B29/18

CPC classification number: G08B17/113 ,  G08B17/107 ,  G08B21/14 ,  G08B29/185

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.

公开(公告)号：US20170191930A1

公开(公告)日：2017-07-06

申请号：US14986452

申请日：2015-12-31

Applicant: Google Inc.

Inventor： Daniel Adam Warren ,  Ian C. Smith ,  Morakinyo John Aina ,  Andrew W. Goldenson ,  Dietrich Ho ,  Anurag Gupta

IPC: G01N21/53 ,  G08B17/103 ,  G01K7/00

CPC classification number: G01N21/53 ,  G01K7/00 ,  G01K7/01 ,  G01K2217/00 ,  G01N2201/062 ,  G01N2201/1211 ,  G08B17/107

Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.

公开(公告)号：US20170191877A1

公开(公告)日：2017-07-06

申请号：US14986482

申请日：2015-12-31

Applicant: Google Inc.

Inventor： Daniel Adam Warren ,  Ian C. Smith ,  Morakinyo John Aina ,  Andrew W. Goldenson ,  Dietrich Ho ,  Anurag Gupta

IPC: G01K7/01 ,  G08B17/103

CPC classification number: G01K7/01 ,  G01K2217/00 ,  G08B17/107 ,  G08B19/005 ,  G08B21/14

Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.

公开(公告)号：US09651485B1

公开(公告)日：2017-05-16

申请号：US14986509

申请日：2015-12-31

Applicant: Google Inc.

Inventor： Daniel Adam Warren ,  Ian C. Smith ,  Morakinyo John Aina ,  Andrew W. Goldenson ,  Dietrich Ho ,  Anurag Gupta

IPC: G08B21/00 ,  G01N21/53 ,  G01N15/14 ,  G08B17/107 ,  G01N15/10

CPC classification number: G01N21/53 ,  G01N15/0205 ,  G01N15/06 ,  G01N2015/0026 ,  G01N2015/0046 ,  G01N2015/0693 ,  G01N2201/062 ,  G08B17/103 ,  G08B17/107 ,  G08B17/113 ,  G08B29/185

Abstract: Apparatus, systems, methods, and related computer program products for handling temperature variation with optoelectronic components of a hazard detection system are described herein. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a temperature of an environment of the hazard detection system. A power characteristic of an optoelectronic component of the hazard detection system may be used to determine a smoke condition of an environment of the hazard detection system. Optoelectronic components of the hazard detection system may be optically coupled to determine a smoke condition of an environment of the hazard detection system. Multiple optoelectronics of the hazard detection system may be operative to detect forward scatter and back scatter of one or more types of light to determine a characteristic of a hazard particle.

公开(公告)号：US09632312B1

公开(公告)日：2017-04-25

申请号：US13874106

申请日：2013-04-30

Applicant: Google Inc.

Inventor： Ozan Cakmakci ,  Anurag Gupta ,  Bernard C. Kress

IPC: G02B27/14 ,  G02B27/01

CPC classification number: G02B5/1852 ,  G02B27/0172 ,  G02B2027/011 ,  G02B2027/0174

Abstract: An optical apparatus includes a first optical element having an eye-ward facing surface and an external world facing surface substantially opposite of the eye-ward facing surface. The optical apparatus also includes a diffractive optical element (“DOE”) disposed to substantially follow a curvature of the eye-ward facing surface of the first optical element. The DOE includes a partially reflective diffraction grating configured to direct a portion of image light in an eye-ward direction where the image light is incident through an eye facing side of the DOE. The curvature of the eye-ward facing surface of the first optical element has an optical power configured to collimate the image light within an eyebox sized area.

公开(公告)号：US09459455B2

公开(公告)日：2016-10-04

申请号：US14135284

申请日：2013-12-19

Applicant: Google Inc.

Inventor： Ozan Cakmakci ,  Anurag Gupta ,  Oscar A. Martinez

IPC: G02B27/14 ,  G02B27/01 ,  G02B5/30

CPC classification number: G02B27/0172 ,  G02B1/18 ,  G02B5/30 ,  G02B27/144 ,  G02B27/283 ,  G02B2027/0118 ,  G02B2027/0123

Abstract: An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region. The light guide component includes an input surface oriented to receive the display light into the light guide component, an eye-ward facing surface having a reflection portion and a viewing portion, a folding surface oriented to reflect the display light received through the input surface to the reflection portion of the eye-ward facing surface, and a first interface surface oriented to receive the display light reflected from the reflection portion of the eye-ward facing surface. A partially reflective layer is disposed on the first interface surface in the viewing region to reflect the display light along the eye-ward direction through viewing portion of the eye-ward facing surface.

Abstract translation: 用于头戴式显示器的目镜包括导光部件，用于引导从观察区域偏移的周边位置处接收的显示光，并且沿着观察区域的朝向方向发射显示光。 导光部件包括被定向以将显示光接收到导光部件中的输入面，具有反射部分和观察部分的面向眼睛的表面，被定向成反射通过输入表面接收的显示光的折叠表面 面向眼睛的表面的反射部分和被定向成接收从面向眼睛的表面的反射部分反射的显示光的第一界面。 部分反射层设置在观察区域的第一界面上，以便通过眼睛朝向表面的观察部分沿着眼睛方向反射显示光。

公开(公告)号：US09423552B2

公开(公告)日：2016-08-23

申请号：US14188411

申请日：2014-02-24

Applicant: Google Inc.

Inventor： Evan M. Richards ,  Anurag Gupta ,  Ozan Cakmakci

IPC: F21V7/04 ,  F21V8/00 ,  G02B27/01 ,  G02B27/00 ,  G02B5/09 ,  G02B27/10 ,  G02B27/14

CPC classification number: G02B6/0038 ,  B32B37/00 ,  B32B38/14 ,  G02B5/09 ,  G02B6/0015 ,  G02B6/0026 ,  G02B6/0035 ,  G02B6/0045 ,  G02B6/0065 ,  G02B27/0081 ,  G02B27/0172 ,  G02B27/1073 ,  G02B27/141 ,  G02B2027/0118 ,  Y10T29/49885

Abstract: A lightguide assembly including structures to provide for outcoupling of light from an internal reflection structure. In an embodiment, a lightguide assembly includes light transmissive bodies forming respective corrugations which are coupled to one another. Optical coatings are variously disposed between the respective corrugations, wherein the optical coatings provide for redirection of light from the lightguide assembly. In another embodiment, optical coatings are each applied to a respective one of alternate facets of a corrugation. Polymer film portions provide mechanical support for the optical coatings during application to the corrugation.

Abstract translation: 一种光导组件，包括用于提供来自内部反射结构的光的耦合的结构。 在一个实施例中，光导组件包括形成彼此耦合的相应波纹的透光体。 光学涂层被各种布置在相应的波纹之间，其中光学涂层提供来自光导组件的光的重定向。 在另一个实施例中，光学涂层各自被施加到波纹的相应的一个备选面。 聚合物膜部分在应用于波纹期间为光学涂层提供机械支撑。

公开(公告)号：US09196141B1

公开(公告)日：2015-11-24

申请号：US14713770

申请日：2015-05-15

Applicant: Google Inc.

Inventor： Mathias Schmidt ,  Adam Mittleman ,  Anurag Gupta ,  Mark Kraz ,  Nicholas Webb

IPC: G08B17/10 ,  G08B17/113

CPC classification number: G08B17/113 ,  G08B17/107 ,  G08B21/14 ,  G08B29/185

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.

Abstract translation: 提出了用于烟雾探测器的烟室的各种实施例。 这种烟室可以包括具有第一部分和第二部分的壳体。 第一部分可以是电磁传感器和两个或更多个电磁发射器通过其与壳体内的空域相互作用。 第二部分可以具有至少部分地限定壳体内的空气空间和外部环境之间的弯曲气流路径的气流表面。 弯曲的气流路径可以径向向外弯曲。

公开(公告)号：US20150268467A1

公开(公告)日：2015-09-24

申请号：US14219316

申请日：2014-03-19

Applicant: Google Inc.

Inventor： Ozan Cakmakci ,  Anurag Gupta ,  Mark B. Spitzer ,  Evan M. Richards

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B5/0252 ,  G02B27/01 ,  G02B27/0103 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B2027/0196 ,  G03H1/0248 ,  G03H1/26 ,  G03H2001/2226 ,  G03H2001/2615

Abstract: An optical element for a Head Mounted Display (“HMD”) includes a lightguide. The lightguide is embedded in the optical element and optically coupled to receive display light and direct the display light in an eyeward direction. The lightguide includes an eyeward hologram, a scene-side hologram, and a propagation region disposed between the eyeward hologram and the scene-side hologram. The eyeward hologram is configured to reflect a wavelength range of the display light that is incident upon the eyeward hologram at a specific angle. The scene-side hologram is configured to reflect the wavelength range of the display light that is incident upon the scene-side hologram at the specific angle.

Abstract translation: 用于头戴式显示器（“HMD”）的光学元件包括光导。 光导被嵌入在光学元件中并被光学耦合以接收显示光并将显示光引导到目视方向。 光导包括眼睛全息图，场景侧全息图以及设置在目视全息图和场景侧全息图之间的传播区域。 眼镜全息图被配置为以特定角度反射入射在目镜全息图上的显示光的波长范围。 场景侧全息图被配置为以特定角度反射入射到场景侧全息图的显示光的波长范围。