IMAGE DISPLAY DRIVING APPARATUS USING GRADATION - ADJUSTABLE LIGHT TRANSMISSION FILTER

摘要

The video display driving device through a use of a variable-gradation penetration filter comprises a source stop member(12) for controlling a transmission amount of incident light from a light-source lamp(10); and a projection stopping member(18) for performing in a gradation control type a permeation of reflective light reflected from a reflective light-amount controlling module(16) having numerous reflective mirror members and transferring it to a projection lens(20), the numerous reflective mirror member which receive light permeated through the source stop member(12) through a medium of a field lens(14), drive on/off the received light and reflect it, whereby extending a life of a video display driving device itself since it is available to process signals of a low speed.