Systems, devices, and methods for calibration of beam profilers

    公开(公告)号:US09702692B2

    公开(公告)日:2017-07-11

    申请号:US15383904

    申请日:2016-12-19

    Abstract: Embodiments generally describe systems, devices, and methods for focusing and calibrating beam profilers. A test object is provided that may include an internal housing rotatable within an external housing. The internal housing may house a light source, a collimator, a filter, and/or a diffuser. A plate may be mounted to the internal housing and may include a plurality of markings. In some embodiments, to focus a beam profiler, the test object may be positioned adjacent the converter plate of a beam profiler. Marker images may be captured and a focus quality may be assessed therefrom. A position of the converter, objective, and/or camera of the beam profiler may be adjusted based on the focus quality. To calibrate, images of the markings in several rotational positions may be captured and used for calibration. The markings may be rotated to several positions by rotating the internal housing relative to the external housing.

    System, method and fixture for performing both optical power and wavelength measurements of light emitted from a laser diode

    公开(公告)号:US09685757B2

    公开(公告)日:2017-06-20

    申请号:US14588608

    申请日:2015-01-02

    CPC classification number: H01S5/0014 G01J1/0411 G01J1/0451 G01J1/4257

    Abstract: A dual testing system and method is used to perform both optical power and wavelength measurements on laser light emitted from a laser diode, such as a chip-on-submount (COS) laser diode or a laser diode in a bar laser. A testing fixture may be used to facilitate both measurements by simultaneously detecting the light for performing a first test including the optical power measurement(s) and reflecting the light for performing a second test including the wavelength measurement(s). The testing fixture may include an angled photodetector and an optical coupling system such as a collimating lens, a focal lens and an optical waveguide. The testing fixture may be electrically connected to an optical power testing module, such as a light-current-voltage (LIV) testing module, for performing the optical power measurement(s) and may be optically coupled to a wavelength measurement module, such as an optical spectrum analyzer (OSA) for performing the wavelength measurement(s).

    Controllable Optical Sensing
    48.
    发明申请
    Controllable Optical Sensing 审中-公开
    可控光学感应

    公开(公告)号:US20170074720A1

    公开(公告)日:2017-03-16

    申请号:US15342878

    申请日:2016-11-03

    Applicant: Facebook, Inc.

    Abstract: An optical sensing device for using light to locate objects or features in a field of view comprises a light source; a controllable lens having two states and being controllable between them, for example a multifocal lens having two or more foci for focusing light from the light source; and a sensor able to sense light reflected from an object, to determine information of the object. The use of two or more foci adds dynamic range to optical sensing to allow for reliable detection over a wide range of distances.

    Abstract translation: 一种用于使用光在视场中定位物体或特征的光学感测装置包括光源; 具有两个状态并且在它们之间可控的可控透镜,例如具有用于聚焦来自光源的光的两个或多个焦点的多焦点透镜; 以及能够感测从物体反射的光的传感器,以确定物体的信息。 使用两个或更多个焦点将动态范围增加到光学感测,以允许在宽范围的距离上的可靠检测。

    DOUBLE FRESNEL PIR LENS
    49.
    发明申请
    DOUBLE FRESNEL PIR LENS 有权
    双眼镜镜头

    公开(公告)号:US20160377275A1

    公开(公告)日:2016-12-29

    申请号:US14753678

    申请日:2015-06-29

    Applicant: Cree, Inc.

    Abstract: A sensor module for a lighting fixture includes a module housing configured to be mounted to a lighting fixture, a light sensor mounted in the module housing, and a sensor cover over the light sensor. The sensor cover includes a first surface oriented to face a task surface within an area of interest, and a second surface opposite the first surface. The first surface includes a first Fresnel lens having a number of Fresnel ridges oriented in a first direction. The second surface includes a second Fresnel lens having a number of Fresnel ridges oriented in a second direction, which is different from the first direction. Providing the first Fresnel lens and the second Fresnel lens with differently oriented Fresnel ridges allows the sensor cover to focus light from a relatively large portion of the task surface to the light sensor while remaining small.

    Abstract translation: 一种用于照明器具的传感器模块,包括被配置为安装到照明器材的模块壳体,安装在模块外壳中的光传感器,以及光传感器上方的传感器盖。 传感器盖包括被定向为面对感兴趣区域内的任务表面的第一表面和与第一表面相对的第二表面。 第一表面包括具有沿第一方向取向的多个菲涅尔脊的第一菲涅尔透镜。 第二表面包括具有与第一方向不同的第二方向上定向的多个菲涅尔脊的第二菲涅耳透镜。 提供具有不同取向菲涅耳脊的第一菲涅尔透镜和第二菲涅尔透镜允许传感器盖将来自任务表面的较大部分的光聚焦到光传感器,同时保持较小。

    TRAPEZOIDAL PIR SENSOR LENS
    50.
    发明申请
    TRAPEZOIDAL PIR SENSOR LENS 有权
    TRAPEZOIDAL PIR传感器镜头

    公开(公告)号:US20160369991A1

    公开(公告)日:2016-12-22

    申请号:US14745854

    申请日:2015-06-22

    Applicant: Cree, Inc.

    Abstract: A sensor module for a lighting fixture includes a housing configured to be mounted to a lighting fixture, a light sensor mounted in the housing, and a sensor cover over the light sensor. The sensor cover includes a parallel surface and an angled surface. The parallel surface is parallel to a task surface within an area of interest, and includes a first number of lens sections, each of which are configured to focus light from a different portion of a first subset of the task surface to the light sensor. The angled surface includes a second number of lens sections, each of which extend from an edge of the parallel surface to form a facet of the angled surface and are configured to focus light from a different portion of a second subset of the task surface to the light sensor.

    Abstract translation: 用于照明器具的传感器模块包括被配置为安装到照明器具的壳体,安装在壳体中的光传感器和光传感器上的传感器盖。 传感器盖包括平行表面和倾斜表面。 平行表面平行于感兴趣区域内的任务表面,并且包括第一数量的透镜部分,每个透镜部分被配置为将来自任务表面的第一子集的不同部分的光聚焦到光传感器。 倾斜表面包括第二数量的透镜部分,每个透镜部分从平行表面的边缘延伸以形成倾斜表面的小平面,并且被配置为将来自任务表面的第二子集的不同部分的光聚焦到 光传感器。

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