Roller blind for hidden camera or sound recording equipment used for house monitoring applications, prevents transit or transmission of light of certain wavelength and is integrated into screen device of recording equipment

摘要

The roller blind prevents transit or insight or transmission of radiating light or radiation of certain wavelength. The roller blind is integrated into screen device of two or three-dimensional functional image and/or sound recording equipment and in hidden devices. The roller blind is installed in functional units of the hidden device and integrated in fixed and variable units. The roller blind is integrated into devices made of glass.