Camera and illuminator for iris imaging in cell phones and tablets
    2.
    发明授权
    Camera and illuminator for iris imaging in cell phones and tablets 有权
    相机和照明器用于手机和平板电脑中的虹膜成像

    公开(公告)号:US09465988B1

    公开(公告)日:2016-10-11

    申请号:US14572915

    申请日:2014-12-17

    CPC classification number: G06K9/00604

    Abstract: An electronic device including an illuminator and a camera configured for performing iris recognition while the user holds the device. The lens of the camera comprises four molded plastic elements with eight aspheric surfaces at a total thickness of only 3.4 mm that provides a mildly distorted image 1.2 mm across. The relative aperture is 3.5 with a fixed focal distance, providing a depth-of-field spanning a fixed focus region of at least 10 cm in depth that is 25 to 35 cm (centimeters) from the eye. The illuminator comprises a near-IR LED in a Cassegrain telescope configuration for efficient directing of flux toward the eye, thereby conserving device volume and electric energy use.

    Abstract translation: 一种电子设备,包括照明器和配置为在用户握持设备时执行光圈识别的照相机。 相机的镜头包括四个模制塑料元件,八个非球面表面,总厚度仅为3.4毫米,提供了1.2毫米的轻微变形图像。 相对孔径为3.5,具有固定的焦距,提供跨越距离眼睛25至35厘米(厘米)的至少10厘米深的固定焦点区域的景深。 照明器包括卡赛格望远镜配置中的近红外LED,用于有效地将光束引向眼睛,从而节省设备体积和电能使用。

    Low distortion wide angle lens for dynamic perspective
    3.
    发明授权
    Low distortion wide angle lens for dynamic perspective 有权
    低失真广角镜头,用于动态视角

    公开(公告)号:US09332181B1

    公开(公告)日:2016-05-03

    申请号:US14533663

    申请日:2014-11-05

    Abstract: An f-theta lens system for a camera that provides a wide field-of-view, relatively low distortion, and a compact footprint. The lens system comprises four molded plastic elements with seven aspheric surfaces. Within a total thickness of 2.5 millimeters, the system is able to provide an image that is 1.2 millimeters across with a horizontal field of view of 127 degrees. The images produced by the system are well-suited for use with conventional face tracking algorithms designed to process rectilinear images produced by cameras with a narrower field of view.

    Abstract translation: 用于相机的f-theta透镜系统,其提供宽视场,相对低的失真和紧凑的占地面积。 透镜系统包括具有七个非球面的四个模制塑料元件。 在2.5毫米的总厚度内,该系统能够提供一个1.2毫米横跨128度的水平视野的图像。 由系统生成的图像非常适用于用于处理具有较窄视场的相机产生的直线图像的常规面部跟踪算法。

    Display sheets with embossed mirror surfaces

    公开(公告)号:US10288996B1

    公开(公告)日:2019-05-14

    申请号:US15380338

    申请日:2016-12-15

    Abstract: Systems, methods, and computer-readable media are disclosed for display sheets with angled mirror surfaces. In one embodiment, an example display sheet may include a first layer and a plastic layer coupled to the first layer. The plastic layer may include a first portion with a first set of mirrors embossed on a surface of the plastic layer, where the first set of mirrors comprises a first tilt angle and a first roll angle. The plastic layer may include a second portion with a second set of mirrors embossed on the surface, where the second set of mirrors comprises a second tilt angle and a second roll angle. The display sheet may be configured to reflect light in a horizontal field of view and a vertical field of view with respect to a projector positioned to direct light at the display sheet.

    Structural alignment features for light emitting diode arrays

    公开(公告)号:US10288797B1

    公开(公告)日:2019-05-14

    申请号:US15384001

    申请日:2016-12-19

    Abstract: Systems, methods, and computer-readable media are disclosed for structural alignment features for light emitting diode arrays. In one embodiment, a device may include a light guide with a first surface, a second surface opposite the first surface, and a third surface perpendicular to the first surface and the second surface. The device may include a light emitting diode array with a first set of light emitting diodes arranged in a first row and a second set of light emitting diodes arranged in a second row. The first set of light emitting diodes may be optically and physically coupled to the first surface, and the second set of light emitting diodes may be optically coupled to the second surface.

    Projection system with refractive beam steering
    7.
    发明授权
    Projection system with refractive beam steering 有权
    具有折射光束转向的投影系统

    公开(公告)号:US09557630B1

    公开(公告)日:2017-01-31

    申请号:US13928261

    申请日:2013-06-26

    Abstract: A projection system projects images onto a surface as part of an augmented reality environment. Users may interact with the images and this interaction is captured as feedback to the system. The projection system includes a refractive beam steerer to direct the projected images onto specific surfaces within the environment, even if the surfaces are moved about the area. The beam steerer has multiple wedge-shaped prisms that are independently movable to steer the projected light beam as desired. Additionally, an infrared (IR) device may be used to illuminate the environment with IR light, and the IR light may be emitted along a common optical path through the refractive beam steerer as used by the projected light beam.

    Abstract translation: 投影系统将图像投影到表面上,作为增强现实环境的一部分。 用户可以与图像进行交互,这种交互作为对系统的反馈而被捕获。 投影系统包括折射光束传送器,用于将投影图像引导到环境中的特定表面上,即使表面围绕该区域移动。 光束转向器具有多个楔形棱镜,其独立地可移动以根据需要转向投影光束。 此外,可以使用红外(IR)装置用红外光照射环境,并且可以沿着通过投影光束所使用的折射束转向器的公共光路发射IR光。

    Ultra-short throw projector with transmissive liquid crystal display

    公开(公告)号:US11099469B1

    公开(公告)日:2021-08-24

    申请号:US16680299

    申请日:2019-11-11

    Abstract: Devices, systems, and methods are provided for an ultra-short throw projector. The projector may include an illuminator having an ellipsoidal reflector, a light emitting diode (LED) positioned inside of the ellipsoidal reflector, and a Fresnel lens positioned inside of the ellipsoidal reflector. The projector may include a circular transmissive liquid crystal display (LCD) and a three-element plastic projection lens positioned outside of the ellipsoidal reflector, wherein the circular transmissive LCD is positioned between the ellipsoidal reflector and the three-element plastic projection lens, wherein the ellipsoidal reflector reflects light emitted by the LED, wherein the Fresnel lens refracts light emitted by the LED, and wherein the three-element plastic projection lens projects the reflected light and the refracted light.

    Multiple frequency band image display system

    公开(公告)号:US10609350B1

    公开(公告)日:2020-03-31

    申请号:US15401942

    申请日:2017-01-09

    Abstract: Devices and techniques are generally described for multi-band projection of image data. In various examples, image data may be identified. In some examples, first image data of a first frequency may be generated from the image data. In some examples, second image data of a second frequency may be generated from the image data. In various examples, the first frequency may be higher than the second frequency. In some examples, a first image may be projected onto a projection surface using a raster projector. In an example, the first image may correspond to the first image data. In further examples, a second image may be projected onto the projection surface overlaying the first image. In various other examples, projecting the second image onto the projection surface may be performed using a lamp-based projector. In some examples, the second image may correspond to the second image data.

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