In this paper the approach and the procedure to complete the TV camera zoom lens design by means of CAE technique have been stated. The solid modeling for all parts has been created in terms of the concept design of CAE. The files which give the attributes such as volume weight

center of gravity moment of inertia

product of inertia for every part are generated. Based on the weight and center of gravity gained from each part the program is compiled with FOTRAN and AI for calculating the center of gravity and the center of gravity shift. The center of gravity shift curve is showed. The proper balance position is indicated. The system center of gravity is computed with different materials (aluminium

invar). The computation offers a reliable standard for modification. Finally all drawings for optical and mechanical parts and assemblies are drafted with computer and plotter. It is due to using the CAE technique the optimization in every designing step can be carried out for many times. By this way the design can be successfully finished within one period. This is a fine example in which the CAE technique has been perfectly used in our institute.