Abstract: THERE HAS BEEN PLASTIC STICKS WITH NAIL TIP AT THE TOP USED TO TEST THE COLORS BUT THEY NEVER GOT POPULARLY USED BECAUSE IT WAS NOT USED AS DISPOSABLE TESTERS. IT HAS BEEN AND STIL IS USED MOSTLY TO MAKE SAMPLES OF THE COLORS. “MATCH NAIL POLISH TESTER” IS UNIQUE AND FIRST TO MAKE A TESTER IN DISPLAY AND ALSO DISPOSABLE FASHION.

Abstract: A solid state image sensor is provided having a vertical charge transfer unit, a horizontal charge transfer unit, a photoelectric conversion unit including a plurality of photoelectric conversion elements arranged in a matrix manner, each photoelectric conversion element having a photodiode and switching MOS transistors to output a signal accumulated in the photodiode, and a charge accumulation controller for controlling a charge accumulated by each photodiode in logarithmical proportion to the quantity of light incident on each corresponding photoelectric conversion element corresponding to one pixel. The charge accumulation controller includes a photochromic color filter layer made of a photochromic material. Alternatively, the charge accumulation controller includes a photochromic layer which is formed over an existing color filter layer at a light receiving window area.