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Light-focusing optical element, light-focusing device, photovoltaic device and photothermal conversion device

一种光学元件、光学构件的技术，应用在光学元件、光伏发电、光学等方向，能够解决不容易获得、高效率太阳能电池昂贵等问题，达到消除需要、消除移动的效果

Active Publication Date: 2013-02-27
NIKON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, high-efficiency solar cells such as those described above are expensive and therefore not readily available except for special applications such as aerospace applications

Method used

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  • Light-focusing optical element, light-focusing device, photovoltaic device and photothermal conversion device
  • Light-focusing optical element, light-focusing device, photovoltaic device and photothermal conversion device
  • Light-focusing optical element, light-focusing device, photovoltaic device and photothermal conversion device

Examples

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no. 2 example —

[0070] The following is a description of first and second embodiments of the present invention given with reference to the accompanying drawings. figure 1 is a perspective view providing an external view of a photovoltaic power generation device 1 including the light concentrating optical element 10 realized in the first embodiment of the present invention or the light concentrating optical element realized in the second embodiment of the present invention 20, while figure 2 provided as in figure 1 Arrow II-II in indicates a schematic cross-sectional view taken. It should be noted that, for the sake of illustration, if figure 1 The coordinate system shown in defines a coordinate system configured with x-axis, y-axis and z-axis extending perpendicularly to each other. The y-axis extends along the thickness of the light-condensing optical element 10 , ie, along the optical axis, while the x-axis and the y-axis cross each other orthogonally in a plane parallel to the surface ...

no. 4 example —

[0188] The light concentrating optical element 10 realized in the third embodiment is equivalent to the light concentrating optical element 10 realized in the first embodiment, and the refractive index matching axis M 1 inclination angle is set equal to 90°. The light concentrating optical element 20 realized in the fourth embodiment is equivalent to the light concentrating optical element 20 in the second embodiment, and the refractive index matching axis M 1 inclination angle and γ are both set equal to 90°. The photovoltaic power generation device 1 may include the light concentrating optical element 10 realized in the third embodiment of the present invention or the light concentrating optical element 20 realized in the fourth embodiment of the present invention, and the external view of the photovoltaic power generation device 1 is shown in perspective Figure provided in figure 1 middle. Figure 17 is along by in figure 1 A schematic cross-sectional view taken in ...

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Abstract

A light-focusing optical element contains a substrate, and a plurality of micro optical members distributed inside the substrate. Each of the plurality of micro optical members: emits light, which penetrates the substrate and enters each of a plurality of optical elements in at least one incident direction, in the same direction as at least one incident direction; and emits light, which enters in another incident direction that is different to at least one incident direction, in at least one emission direction that is different to the other incident direction. Thus, the plurality of micro optical members deflects the direction of travel of light that enters inside the substrate from the substrate surface and travels inside the substrate in the same direction, and the light that travels inside the substrate that was deflected in the same direction by the plurality of micro optical elements is focused at the ends of the substrate.

Description

technical field [0001] The present invention relates to a light concentrating optical element that condenses light that has entered its surface toward a side surface extending along one side of an input surface. The invention also relates to a light concentrating device, a photovoltaic power generation device and a photothermal conversion device, each of which is equipped with the light concentrating optical element. Background technique [0002] Solar cells that convert light energy into electrical energy are composed of silicon-based materials, compound-based materials, organic materials, or dye-sensitized materials. Standard solar cells typically achieve power conversion efficiencies on the order of 10 to 20%. On the other hand, much improved power conversion efficiency of up to 40% is guaranteed by multi-junction solar cells developed in recent years, which include a plurality of semiconductor layers stacked on top of each other. The layer has an optimal bandgap for ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02H01L31/052F24S23/70
CPCH01L31/0525Y02E10/50Y02E10/52F24J2/1047G02B5/10G02B5/0236F24S23/80G02B6/0056G02B6/0076H01L31/0543Y02E10/40H01L31/0547
Inventor 丹羽达雄内田和歌奈
Owner NIKON CORP
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