Illuminating light beam axis adjusting mechanism in ophthalmosco

Details Illuminating light beam axis adjusting mechanism in ophthalmosco Illuminating light beam axis adjusting mechanism in ophthalmosco

1983-09-28

1986-09-23

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351205, A61B 314, A61B 310

Patent

active

046132180

ABSTRACT:
An apparatus for adjusting a direction of an illuminating light beam in an ophthalmoscope which contains a photographing device includes a click stop mechanism which click stops rotation of a mirror used to reflect the illuminating light beam so that the light beam is accurately reflected onto a photographic film in the photographing device. A knob is integrally connected to a rotary shaft which is rotatably coupled to a mirror frame so that rotation of the knob rotates the mirror frame, and an interlocking member is fixedly disposed on the rotary shaft and contains a click ball mechanism which selectively engages a hole in an outer frame so that rotation of the rotary shaft is click stopped at a predetermined position.

REFERENCES:
patent: 3915564 (1975-10-01), Urban
patent: 4149787 (1979-04-01), Kobayashi et al.
patent: 4235529 (1980-11-01), Kawase

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