OFF-AXIS ILLUMINATION LED LUMINAIRE

    公开(公告)号:US20120170260A1

    公开(公告)日:2012-07-05

    申请号:US12983787

    申请日:2011-01-03

    IPC分类号: F21V7/06 B05D5/06

    摘要: This is directed to a LED light fixture having a shaped light guide array with a CPC reflector for directing light off-axis, and methods for constructing the same. A LED light fixture includes a LED module providing light and an elongated light guide array placed adjacent to the LED module. The elongated light guide array can include a curved outer surface through which light is emitted into an environment. To further control the output of light, and to direct light off-axis, the light guide array can include a CPC reflector disposed around a boundary or periphery of the light guide array. The CPC reflector can be angled such that light is directed at angles above a cut-off angle by which the reflector is rotated about a focus.

    摘要翻译: 这涉及一种LED灯具,其具有带有CPC反射器的成形光导阵列,用于将光引导离轴,以及用于构造它的方法。 LED灯具包括提供光的LED模块和与LED模块相邻放置的细长的光导阵列。 细长的光导阵列可以包括弯曲的外表面,光通过该外表面发射到环境中。 为了进一步控制光的输出并且将光引导到轴外,光导阵列可以包括围绕光导阵列的边界或周边设置的CPC反射器。 CPC反射器可以是成角度的,使得光以高于反射器围绕焦点旋转的截止角度的角度定向。

    HIGH EFFICIENCY EDGE-LIT LIGHT FIXTURE
    15.
    发明申请
    HIGH EFFICIENCY EDGE-LIT LIGHT FIXTURE 审中-公开
    高效率边缘光固定

    公开(公告)号:US20120155116A1

    公开(公告)日:2012-06-21

    申请号:US12973678

    申请日:2010-12-20

    申请人: Robert C. Gardner

    发明人: Robert C. Gardner

    IPC分类号: F21V7/22 G02B6/00

    CPC分类号: G02B6/002 G02B6/001

    摘要: This is directed to a LED light fixture having a light guide array with a retroreflective element used to redirect light into the light guide array, and methods for constructing the same. A LED light fixture includes a LED module providing light and an elongated light guide array placed adjacent to the LED module. Light emitted by the LED module propagates through the light guide array and is redirected by the light guide array into the environment of the fixture. To prevent light from propagating through the end of the light guide array opposite the LED module, the light guide array can include angled facets forming a retroreflective element at an end of the light guide array for redirecting light back into the LGA.

    摘要翻译: 这涉及具有导光阵列的LED灯具,其具有用于将光重定向到导光阵列中的回射元件,以及用于构造该导光阵列的方法。 LED灯具包括提供光的LED模块和与LED模块相邻放置的细长的光导阵列。 由LED模块发出的光线通过光导阵列传播,并被光导阵列重定向到固定装置的环境中。 为了防止光通过与LED模块相对的光导阵列的端部传播,光导阵列可以包括在光导阵列的端部处形成逆反射元件的倾斜小面,用于将光重新导向到LGA中。

    High efficiency lamp or light accepter
    16.
    发明授权
    High efficiency lamp or light accepter 失效
    高效灯或光接收器

    公开(公告)号:US5055892A

    公开(公告)日:1991-10-08

    申请号:US399832

    申请日:1989-08-29

    摘要: A lamp has a reflective cup with a light emitting device in the bottom of the cup. A transparent material having an index of refraction n fills the cup and extends to a hemispherical surface with radius R and an equator parallel to the opening of the cup. The reflective walls of the cup project substantially all of the light within a cutoff cone having an included half angle equal to the Brewster's angle of the transparent material. The center of the hemispherical lens surface is spaced from the rim of the opening of the cup a distance R/n. Thus, the opening of the cup is the locus of aplanatic points of the equator if the hemisphere. Most rays from within the cup are incident on the hemispherical lens surface at no more than the complement of the Brewster's angle. Thus, minimal light losses occur at the interface between the transparent medium and air. An aplanatic image is formed outside the hemispherical lens of a virtual source comprising a hemispherical surface extending through the rim of the cup opening. Such optics may also be used for a light accepting device. These principles may also be applicable to a an elongated cavity with a semicylindrical lens of radius R and edges spaced from the edge of the cavity a distance R/n.