SOLAR POWERED VARIABLE LIGHT ATTENUATING DEVICES AND ARRANGEMENTS

    公开(公告)号:CA2759857A1

    公开(公告)日:2010-10-28

    申请号:CA2759857

    申请日:2010-04-26

    Abstract: A solar powered variable light attenuating device includes a liquid crystal cell, a photovoltaic cell in electrical communication with the liquid crystal cell, and a light concentrator having a light absorbing surface and a light emitting surface optically coupled to the photovoltaic cell. At least a portion of light impinging on the light absorbing surface of the light concentrator is concentrated and directed through the light emitting surface to a photon- absorbing portion of the photovoltaic cell to generate a voltage. The generated voltage is used to change the liquid crystal cell from a de-energized state to an energized state in response to sunlight directed toward the photovoltaic cell.

    8.
    发明专利
    未知

    公开(公告)号:DE69920225D1

    公开(公告)日:2004-10-21

    申请号:DE69920225

    申请日:1999-06-18

    Abstract: A cell for the electronic attenuation of light suitable for use in eyewear includes spaced substrates coated with a conducting layer, and preferably a passivation layer and an alignment layer. Disposed between the substrates is a guest-host solution comprising a host material and a light-absorbing dichroic dye guest. A power circuit is provided with a power supply connected to the conducting layers. Adjustment of the power supply alters the orientation of the host material which in turn alters the orientation of the dichroic dye. Light is absorbed by the dichroic dye, depending upon its orientation without the need for polarizers.

    9.
    发明专利
    未知

    公开(公告)号:DE60006261D1

    公开(公告)日:2003-12-04

    申请号:DE60006261

    申请日:2000-08-30

    Abstract: A splicing asymmetric reflective array (10) for combining at least two input beams (12, 14) into a combined output (16). The arrays include a plurality of substantially reflecting, adjacently positioned layers (20). Each layer (20) has substantially the same width (24) and substantially the same thickness (22) while having a different height dimension (26). A collective entry portion (40) is formed by the adjacent layers' width and thickness dimensions, wherein at least two input beams are directed into and received therein. A collective exit portion (42) is formed by the adjacent layers' height dimensions, wherein the height dimensions are monotonically increasing. A cascade array (60) incorporating the array 10 and reduced size arrays (64, 66, 68, and 70) may be used to combine more than two input beams into one. A three-dimensional array (80), which alters the slope of each layer's height dimension, can be used to combine four input beams (82) into one output beam (84).

    3h-nafto[2,1-b]piranos como corantes dicróicos fotocrômicos e artigo óptico que os contém

    公开(公告)号:BRPI0621979B1

    公开(公告)日:2016-04-19

    申请号:BRPI0621979

    申请日:2006-09-06

    Abstract: 3h-nafto[2,1-b]piranos como corantes dicróicos fotocrômicos e artigo óptico que os contém um composto de naftopirano representado pela fórmula (i): onde n~ 1~, n~ 2~, p, q são um número inteiro compreendido de 0 a 5, inclusive; m é um número inteiro compreendido de 0 a 4, inclusive; r1 e r2 representam um grupo selecionado a partir de halogênio, -r~ a~, -oh, - or~ a~, -sh, sr~ a~, nh~ 2~, nr~ a~r~a~ ~ 1~, nr~ b~ ~ c~,-co-r~ a~, e ~co~ 2~r~ a~ ~ 1~ , onde r~ a~, r~ a~ ~ 1~, r~ b~ e r~ c~ são como definidos no relatório descritivo; r~ 3~ representa um grupo selecionado a partir de halogênio, - r~ a~, -oh, or~ a~, sh, -sr~ a~, nh~ 2~, e -nr~ a~r~ a~ ~1~; r~ 4~ representa um grupo selecionado a partir de halogênio, -r~ a~, -oh, -or~ a~, sh, -sr~ a~, nh~ 2~, nr~ a~r~ a~ ~ 1~, co-r~ a~, e -co~ 2~r~ a~~ 1; r~ 5~ representa um grupo selecionado a partir de: halogênio, -r~ a~ , -oh, -or~ a~, -sh, -sr~ a~, nh~ 2~, e -nr~ a~r~ a~ ~ 1~, onde r~ a~ e r~ a~ ~ 1~ são como definidos mais acima, ou quando q for igual a 2, então dois r~ 5~ juntos re- presentam adicionalmente um grupo -o-(ch~ 2~)~ q~~ 1~- o-, onde qi representa um número inteiro compreendido de 1 a 3, inclusive.

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