CN106249534B - 一种结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布 - Google Patents
一种结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布 Download PDFInfo
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Abstract
本发明提供了一种结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,PET基底层上固定有一层薄膜太阳能电池,薄膜太阳能电池上固定有呈阵列分布的三角聚光透镜,所述的三角聚光透镜的纵截面呈扇形,分别由贴合在薄膜太阳能电池上的贴合面、呈球面状的且用于聚光的聚光面以及位于聚光面下方的下斜面组成,所述下斜面上设置有一层UV光油层;当外界的环境光从各个角度照射至三角聚光透镜上时,聚光面将光线聚拢并传输至与其相连接的薄膜太阳能电池上,薄膜太阳能电池将上述光线吸收并将所吸收的太阳能转化为电能,节能环保。该幕布能够极大地提高对环境干扰光的吸收能力,使得幕布在明亮环境下可以高对比度高饱和度的还原所投影画面。
Description
技术领域
本发明提供了一种光学微结构幕布,尤其提供了一种既能够抗外界环境光干扰,同时又能够吸收光能转化为电能的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,属于光学材料技术领域。
背景技术
投影幕布在日光或灯光影响之下,所投影图像的对比度、饱和度大大下降,色彩还原性不理想,因此在高亮度环境下使用投影幕布,解决环境光对投影效果的干扰就显得尤为重要。
已有的光学幕布中,美国发明专利US6842282B2采用玻璃微珠层和光栅层相结合的结构,采用玻璃微珠的溯源反射特性,并用光栅的涂黑侧壁吸收了部分环境光,提高了投影图像的对比度,但由于玻璃微珠溯源特性固有的特点使得部分反射光线偏离方向过大,投影图像亮度急剧下降,画面亮度损失严重。成都菲斯特科技有限公司发明专利CN104062839A采用金属介质镜面反光膜和微棱镜阵列结构层以及漫反射层相结合的结构,在微棱镜阵列结构层的一个侧壁上添加吸收层以吸收环境光,金属介质镜面反光膜由极高的镜面反射率,用于提高画面增益,使得投影画面具有良好的对比度,但此发明中所用光线吸收层材料吸光效率较为低下,在高亮度的室外环境下,环境光对投影画面影响仍较为严重,画面对比度,色彩还原度都受到较大影响,从金属介质镜面反光膜反射出来的光线不能全部进入到漫反射层,这使得部分光线有所损失,对投影效果有着较大的影响。
发明内容
本发明提供了一种结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,解决了现有技术中的不足,该幕布能够极大地提高对环境干扰光的吸收能力,使得幕布在明亮环境下可以高对比度高饱和度的还原所投影画面;同时薄膜太阳能电池还能够将所吸收的光能转化为电能之后又对投影仪供电,节能环保。
实现本发明上述目的所采用的技术方案为:
一种结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,至少包括PET基底层,所述PET基底层上固定有一层薄膜太阳能电池,所述薄膜太阳能电池上通过粘合层固定有呈阵列分布的三角聚光透镜,且相邻的三角聚光透镜之间的间距不大于投影图像像素的1/2,所述的三角聚光透镜的纵截面呈扇形,分别由贴合在薄膜太阳能电池上的贴合面、呈球面状的且用于聚光的聚光面以及位于聚光面下方的下斜面组成,其中贴合面与下斜面之间的夹角为30~65度,所述下斜面上设置有一层UV光油层;当外界的环境光从各个角度照射至三角聚光透镜上时,聚光面将光线聚拢并传输至与其相连接的薄膜太阳能电池上,薄膜太阳能电池将上述光线吸收并将所吸收的太阳能转化为电能。
所述贴合面与下斜面之间的夹角为55度。
所述的薄膜太阳能电池为黑硅薄膜太阳能电池、非晶硅薄膜太阳能电池、碲化镉薄膜太阳能电池、染料敏化电池、砷化镓薄膜太阳能薄膜太阳能电池或铜铟镓硒薄膜太阳能电池。
与现有技术相比,本发明具有以下优点:1、本发明在高亮度的环境下,外界光从各个角度照射至三角聚光透镜上时,聚光面将光线聚拢并传输至与其相连接的薄膜太阳能电池上。而当投影仪投射出的光线从斜下方投射到幕布上时,光线投射到下斜面上,而下斜面上设置有高反射率的UV光油层,且所述的下斜面与贴合面之间的夹角为30~65度,因此投影仪所投射出的光线经反射后进入人眼。所以本发明所提供的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布在高亮度的环境中仍然可以保持所投影画面的高对比度和色彩还原度。2、所述薄膜太阳能电池将外界光吸收后,还可以进一步将所吸收的光能转化为电能,又可以为投影仪提供一定的电力支撑,节能环保。
附图说明
图1为本发明提供的光学微结构幕布的纵截面结构图;
图中:1-PET基底层,2-UV光油层,3-薄膜太阳能电池,4-三角聚光透镜,5-聚光面,6-粘合层。
具体实施方式
下面结合附图及具体实施例对本发明做详细具体的说明,但是本发明的保护范围并不局限于以下实施例。
本发明所提供的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,其结构如图1所示,所述PET基底层1上固定有一层薄膜太阳能电池3,所述薄膜太阳能电池3上通过粘合层6固定有呈阵列分布的三角聚光透镜4,且相邻的三角聚光透镜4之间的间距不大于投影图像像素的1/2。所述的三角聚光透镜的纵截面呈扇形,分别由贴合在薄膜太阳能电池上的贴合面、呈球面状的且用于聚光的聚光面5以及位于聚光面下方的下斜面组成,其中贴合面与下斜面之间的夹角为30~65度,作为优选,本实施例中所述贴合面与下斜面之间的夹角为55度。所述下斜面上设置有一层UV光油层2;当外界的环境光从各个角度照射至三角聚光透镜4上时,聚光面5将光线聚拢并传输至与其相连接的薄膜太阳能电池3上,薄膜太阳能电池3将上述光线吸收并将所吸收的太阳能转化为电能。
本实施例中所述的薄膜太阳能电池可选用黑硅薄膜太阳能电池、非晶硅薄膜太阳能电池、碲化镉薄膜太阳能电池、染料敏化太阳能电池、砷化镓薄膜太阳能电池以及铜铟镓硒薄膜太阳能电池中的一种。
本发明所提供的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布在高亮度的环境下,外界光从各个角度照射至三角聚光透镜上时,聚光面将光线聚拢并传输至与其相连接的薄膜太阳能电池上。而当投影仪投射出的光线从斜下方投射到幕布上时,光线投射到下斜面上,而下斜面上设置有高反射率的UV光油层,且所述的下斜面与贴合面之间的夹角为30~65度,因此投影仪所投射出的光线经反射后进入人眼,见图1中光线反射线路。所以本发明所提供的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布在高亮度的环境中仍然可以保持所投影画面的高对比度和色彩还原度。同时,由于薄膜太阳能电池对外界光吸收后,还可以进一步将所吸收的光能转化为电能,又可以为投影仪提供一定的电力支撑,节能环保。
Claims (3)
1.一种结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,至少包括PET基底层,其特征在于:所述PET基底层上固定有一层薄膜太阳能电池,所述薄膜太阳能电池上通过粘合层固定有呈阵列分布的三角聚光透镜,且相邻的三角聚光透镜之间的间距不大于投影图像像素的1/2,所述的三角聚光透镜的纵截面呈扇形,分别由贴合在薄膜太阳能电池上的贴合面、呈球面状的且用于聚光的聚光面以及位于聚光面下方的下斜面组成,其中贴合面与下斜面之间的夹角为30~65度,所述下斜面上设置有一层UV光油层;当外界的环境光从各个角度照射至三角聚光透镜上时,聚光面将光线聚拢并传输至与其相连接的薄膜太阳能电池上,薄膜太阳能电池将上述光线吸收并将所吸收的太阳能转化为电能。
2.根据权利要求1所述的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,其特征在于:所述贴合面与下斜面之间的夹角为55度。
3.根据权利要求1所述的结合聚光透镜和薄膜太阳能电池的正投光学微结构幕布,其特征在于:所述的薄膜太阳能电池为黑硅薄膜太阳能电池、非晶硅薄膜太阳能电池、碲化镉薄膜太阳能电池、染料敏化薄膜太阳能电池、砷化镓薄膜太阳能电池或铜铟镓硒薄膜太阳能电池。
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CN204807903U (zh) * | 2015-06-24 | 2015-11-25 | 沈绍骁 | 节能投影幕 |
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