Color television display means including a multiplicity of light values

Claim 1

A MASK FOR ENABLING A SINGLE GUN CATHODE RAY TUBE TO PRODUCE COLOR IMAGES COMPRISING A POLARIZING SHEET CONTAINING A MULTIPLICITY OF SEGMENTS, ADJACENT ONES OF SAID SEGMENTS BEING IN CONTACT, SAID SEGMENTS BEING DIVIDED INTO THREE PORTIONS FOR PASSING LIGHT POLARIZED IN THREE DIFFERENT DIRECTIONS, THE AREA OF EACH OF SAID SEGMENTS BEING APPROXIMATELY EQUAL TO THE AREA OF THE CATHODE RAY OF SAID TUBE, SAID POLARIZING SHEET ADAPTED TO BE ATTACHED TO THE FACE OF SAID TUBE, AN ELECTRO-OPTICAL SHUTTER RESPONSIVE TO LIGHT DERIVING FROM SAID POLARIZING SHEET, SAID SHUTTER INCLUDING MEANS FOR PASSING LIGHT POLARIZED IN EACH OF SAD THREE DIRECTIONS, BUT IN ONLY ONE DIRECTION AT A TIME, A LIGHT FILTER CONTAINING A MULTIPLICITY OF SEGMENTS, THE SEGMENTS OF SAID LIGHT FILTER AND POLARIZING SHEET BEING APPROXIMATELY THE SAME AREA AND ALIGNED, EACH OF THE SEGMENTS OF SAID LIGHT FILTER BEING DIVIDED INTO THREE PORTIONS ALIGNED WITH CORRESPONDING PORTIONS OF SAID POLARIZING SHEET, THE THREE PORTIONS OF EACH SEGMENT HAVING COLOR FILTERS FOR RESPECTIVELY PASSING RED, GREEN AND BLUE LIGHT.