1982-11-08
1986-02-18
Corbin, John K.
350519, G02B 2122
Patent
active
045710384
ABSTRACT:
The invention resides in a binocular microscope which has a collimating lens 20 and a pair of monocular tubes 28 in optical alignment with it. Each tube has, as minimum components of its optical system, an objective 22 and an eyepiece 36. The optical axes 64 of the objectives are maintained at all times parallel to and at a fixed distance from each other. The optical axes 94 of the eyepieces are also at all times parallel to each other as well as to the axes of the objectives. However, the distance between the eyepiece axes 94 is variable, and there are means to vary the distance to accommodate the inter-pupillary distance of the viewer without causing line of sight convergence. A magnification changer 30 is positioned in each monocular tube 28 in the optical path between the eyepiece 36 and the objective 22. Means are provided for operating the magnification changers independently of changes in the distance between the eyepieces.
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Ophthalmic Surgery, Spring, 1973, vol. 4, No. 1, pp. 41-42.
Corbin John K.
Lemmo Vincent J.
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