Transmission Sphere System
The transmission sphere system for the VI-direct 100 interferometer consists of an optical connector, which already contains parts of the lens system, and a transmission sphere system. The transmission sphere objective can thus be reduced to a minimum number of optical elements. The combination of connector and transmission sphere objective allows the test diameter to be enlarged. This results in a larger measuring range compared to standard 4 objectives. In addition, a D130 plano lens is available, which in combination with the optical connector, similar to a flaring lens, increases the test diameter of the VI-direct 100 interferometer to 130 mm by 30%.