Light selective permeable blind

PURPOSE: To improve the control effect of a selective light by constituting it with a high molecular sheet which absorbs UV rays and IR rays, permeating a visible light selectively, and has a good transparency in itself. CONSTITUTION: A high molecular sheet is made up of a plastic sheet 1 or a base substance for this high molecular sheet, an absorbing layer 21 containing both organic UV and IR absorbents and a protecting film layer 3. Next, as for the sheet 1, polycarbonate or the like high in transparency and excellent in durability is used. Also as for the UV absorbent, a benzophenone compound that makes the extent of transmissivity at a wavelength of about 350nm down to less than 5% without entailing any damage to the transmission of a visible light, is used. As for the IR absorbent, an amino compound that makes the extent of infrared transmissivity at a wavelength of about 1100nm down to less than 20% without entailing any damage to the transmission of the visible light, is used. With this constitution, such a light selective control effect that transmits the visible light alone, and interrupts harmful UV and IR rays is improvable. COPYRIGHT: (C)1993,JPO&Japio