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Harry Zoellner Ph.D.

After world war ii (1947), Harry Zoellner Ph.D. (now Carl Zeiss Jena factory's technical director), through the application development of the new element thorium glass designed a Tessar f2.8/5 cm, 1951 years of this Tessar lens to formal devotion market began to sales, compared with f3.5, in addition to increasing aperture outside, in the imaging quality aspect to a Tessar lens of a new vertex.

In 1965 dr Harry Zoellner design Tessarf2.4, has reached the apex of the optical level at that time, but due to excessive aperture and bring the image loss, make this a lens development by half.

Located in Stuttgart nearby Carl Zeiss Oberkochen factory, is also working hard Tessar lens of development, and Tessar series for the improvement of the quality of optical lens made a great of contribution, 1956 years Wandersleb improved 1938 has already been patented Tessar original lens design, produce for Contaflex three-quarters of lens shutter type between super Tessar f4/35 mm f4 / and 85 mm.

1962 super Tessar open fully aperture and was promoted web camera manufacturer dab4d59ck to 1:3. 2. After the company fixed Zeiss wide Angle Tessar and dishes Tessar before the mirror group, make Tessa

The camera lens can finally the serialization of r used in Contaxflex camera, meet the needs of users each focal length. So far Tessar lens family organized the construction has been completed, since the s, since more after improvement Tessar lenses are photographer used.

At the same time, other camera factory also in succession Tessar lens design production from a series of deformation varieties, which also includes Leitz company early Elmar series lens. If anyone want to collect Tessar lens, then the present in the world at least still has more than 400 different kinds of Tessar to choose from.

The huge Tessar family to show people,HD webcam manufacturer dab4d59ck optical technology progress how can 1840 years of a structure simple four pieces of glasses, and the development in the field of photography, become today still decisive lens.