Waveguide Diffuser for Light Detection using an Aperture

    公开(公告)号:US20180156659A1

    公开(公告)日:2018-06-07

    申请号:US15368579

    申请日:2016-12-03

    Applicant: Waymo LLC

    Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example implementation includes a system. The system includes a lens disposed relative to a scene. The lens focuses light from the scene. The system also includes an aperture defined within an opaque material. The system also includes a waveguide having a first side that receives light focused by the lens and transmitted through the aperture. The waveguide guides the received light toward a second side of the waveguide opposite to the first side. The waveguide has a third side extending between the first side and the second side. The system also includes an array of light detectors that intercepts and detects light propagating out of the third side of the waveguide.

    Variable total internal reflection electrowetting lens assembly for a detector

    公开(公告)号:US09977235B2

    公开(公告)日:2018-05-22

    申请号:US15188232

    申请日:2016-06-21

    Abstract: Disclosed are examples of optical/electrical devices including a variable TIR lens assembly having a transducer, an optical lens and an electrowetting cell coupled to an exterior wall of the lens. The electrowetting cell contains two immiscible liquids having different optical and electrical properties. One liquid has a high index of refraction, and the other liquid has a low index of refraction. At least one liquid is electrically conductive. A signal causes the high index of refraction and the low index of refraction liquids to assume various positions within the electrowetting cell along the exterior wall. The properties of the optical lens, e.g. its total internal reflectivity, change depending upon the position of the respective liquids along the exterior wall. The light detection characteristics of the assembly change to receive an input light beam over a range of inputs or over a range of fields of view.

    Passive micromirror device for non-imaging wide field of view

    公开(公告)号:US09964746B2

    公开(公告)日:2018-05-08

    申请号:US14873460

    申请日:2015-10-02

    Abstract: According to one aspect, embodiments herein provide a non-imaging optical system including a focusing optical element positioned within an input optical path to receive electromagnetic radiation, a micro-mirror array including a plurality of micro-mirror pixels positioned within the input optical path, individual micro-mirror pixels of the plurality of micro-mirror pixels being positioned to receive electromagnetic radiation from the focusing optical element and redirect electromagnetic radiation along a redirected optical path, a relay optical element positioned within the redirected optical path to receive and focus electromagnetic radiation from the micro-mirror array, and a single-pixel non-imaging detector positioned to receive electromagnetic radiation from the relay optical element.

    Integrated Optical Tap Monitor
    26.
    发明申请

    公开(公告)号:US20180120150A1

    公开(公告)日:2018-05-03

    申请号:US15342156

    申请日:2016-11-03

    Inventor: Michael Cahill

    Abstract: An integrated optical tap monitor takes the form of a highly-reflective outer coating disposed over the active region of an associated photodetector. The coating is of a material that allows for a majority of the impinging optical signal to be re-directed into an output path, while passing a small portion of the signal into the photodetector's active region for monitoring purposes. The integrated configuration is small enough to be housed within a standard TO can, and additional optical components (filters, attenuators, etc.) may be co-located with the integrated tap monitor. By virtue of incorporating the monitoring function with a reflective surface, the integrated tap monitor may be substituted for a turning mirror at any place along a signal path and provide the benefit of power monitoring while also performing signal re-direction.

    Lens for pet rejecting passive infrared sensor

    公开(公告)号:US09933296B2

    公开(公告)日:2018-04-03

    申请号:US15352317

    申请日:2016-11-15

    Applicant: Google Inc.

    Abstract: A passive infrared motion detection sensor that includes a Fresnel focusing arrangement that creates at least a first infrared sensing region, a second infrared sensing region, and a third infrared sensing region, in which target detection in one or more infrared sensing regions is weighted to be distinguishable from target detection in remaining infrared sensing regions. The Fresnel focusing arrangement creates the weighted infrared sensing regions using a lenslet region, an optically opaque region and a plurality of extruded cylindrical lenslets that extend across a portion of both the lenslet region and the optically opaque region. The signal detection in at least the second weighted infrared sensing region, for example, an infrared sensing range between 6 and 10 feet, is weighted to easily distinguish between a pet within the second infrared sensing range and a person at any infrared sensing range.

Patent Agency Ranking