||In 1966, Karl Storz realized the optical potential of making telescopes using a unique rod lens system that had been invented by the English physicist Professor H. Hopkins.
This system utilized a series of long cylinders of optical quality glass which have lens surfaces on each end.
These rod lenses are positioned in such a way that spaces which act as air lenses are created between the ends of the rods.
The result of this Hopkin's rod air lens system is a higher degree of brightness, resolution (sharpness) and greater depth of field than could be obtained with conventional telescopes.
In addition the optical diameter of the rod lens system can be made very small to enable extremely thin instruments to be manufactured while maintaining high optical quality.
This is obtained by the large aperture of the rod lens system which enhances image brightness.