Ocular optical system

Details Ocular optical system Ocular optical system

1980-12-09

1983-06-21

Corbin, John K.

350445, G02B 2504

Patent

active

043890970

ABSTRACT:
An ocular optical system having a wide diopter adjustment range including, in order from the viewing side, a first lens component having a negative refracting power, a second lens component having a positive refracting power, a third lens component having a negative refracting power, a pentaprism and a condenser lens component. The second lens component having the positive refracting power is movable for diopter adjustment. The optical system satisfies the following conditions:

REFERENCES:
patent: 3182576 (1965-05-01), Papke
patent: 3663092 (1972-05-01), Schlegel

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