DEVICE FOR ADJUSTING THE VALUE OF CHROMATISM ABERRATIONS OF AN OPTICAL SYSTEM AND METHOD INCLUDING THE APPLICATION OF SUCH A DEVICE FOR ADJUSTING COLOR TELEVISION CAMERAS USING A DIASCOPE

摘要

A. DEVICE FOR ADJUSTING THE VALUE OF THE CHROMATISM ABERRATIONS OF AN OPTICAL SYSTEM. /P P B. THIS DEVICE CONSISTS OF A SET OF AT LEAST FOUR PRISMATIC BLADES FORMING TWO OPTICALLY PARALLEL GROUPS OF THICKNESS VARIABLE, EACH CONSISTING OF TWO OF THESE BLADES, AND WHICH ARE MADE OF TRANSPARENT MATERIALS HAVING THE SAME REFRACTION INDEX AND THE SAME DISPERSION INDEX FOR THE BLADES OF THE SAME GROUP, BUT A DISPERSION INDEX FOR THE BLADES OF THE SAME GROUP , BUT A DIFFERENT DISPERSION INDEX FOR EACH GROUP, CONTROL MEANS ALLOWING TO VARY THE THICKNESS OF EACH GROUP OF BLADES WHILE KEEPING A CONSTANT TOTAL THICKNESS. /P P C. DEVICE FOR ADJUSTING CAMERAS OF COLOR TELEVISION USING A DIASCOPE.