SUNLIGHT BLOCKING SYSTEM USING THE PHOTOELECTRIC EFFECT AND LIQUID CRYSTAL

摘要

The present application relates to a light blocking system, which extends in one direction, at least one light focusing unit for focusing light in the one direction; At least one light reflection preventing member contacting each of the light concentrators, the light reflection preventing member being implemented similarly to the optical characteristics of the light converging unit so as to reduce the amount of reflection of the light transmitted from the light converging unit, Between the first semiconductor layer, the second semiconductor layer in contact with the first semiconductor layer, the current is formed on the basis of the light is focused by the light focusing unit and transmitted through the light reflection preventing member, the light reflection preventing member A photovoltaic unit disposed and including a first photovoltaic electrode in contact with the first semiconductor layer, and a second photovoltaic electrode in contact with the second semiconductor layer; And a first electrode electrically connected to the first photovoltaic electrode, a second electrode electrically connected to the second photovoltaic electrode, and disposed between the first electrode and the second electrode. There is provided a light blocking system including a transmittance changing layer whose transmittance is changed by a photovoltaic electrode or a power source based on the current transmitted from the second photovoltaic electrode.