Title: Binocular barrel with adjustable interpupillary distance and target marker support

Abstract: The invention contemplates a binocular barrel system as for use in a microscope wherein an oriented target line at the focal plane of the eyepiece is kept at consistently the same orientation with respect to the viewed object, in spite of the fact that the eyepiece housings are swivel-mounted to the barrel for accommodation to the interpupillary distance of the observer. A parallelogram system so coordinates rotation of the target-line support at the eyepiece, with rotational displacement of the eyepiece about the barrel, that the correct orientation is seen by any and all observers, regardless of individual differences in interpupillary distance.

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Inventors: Keydell, Willi (Oberkochen, DT)
Binder, Herbert (Aalen-Hofherrnweiler, DT)

Application Number: 706202
Filing Date: 1976-07-19
Publication_date: 1978-04-04
Assignee: Carl Zeiss-Stiftung (Oberkochen, DT)
Primary Class(es): 359/375 359/412
Other Classes:
US Patent Ref:

1965755	Jul, 1934	Warmisham	350/75.
3914012	Oct, 1975	Boughton	350/75.

Other Refs: 410,993360,234

Apr, 1910	FR
Nov, 1931	UK

Primary Examiner: Henry, Jon W.
Assistant Examiner:
Attorney: Hopgood, Calimafde, Kalil, Blaustein & Lieberman