Function-conversion device for ground monocular telescope

Details Function-conversion device for ground monocular telescope Function-conversion device for ground monocular telescope

1988-03-11

1989-06-13

Arnold, Bruce Y.

350247, 350254, 350559, 350566, G02B 2300, G02B 702, G02B 1502, G02B 2732

Patent

active

048386723

ABSTRACT:
A function-conversion device for a ground monocular telescope of an erecting-prism type ground monocular telescope. The device includes a rotational plate so mounted as to be horizontally movable in a vicinity of the focal plane of the objective lens of the telescope, with a plurality of windows being provided in the rotational plate and with a reticle and/or a visibility diphragm or a second objective lens being mounted in alignment with the windows. This arrangement provides a convenient and easy-to-handle function-conversion device since the windows can be selectively moved into the vicinity of the focal plane.

REFERENCES:
patent: 409927 (1889-08-01), Clements
patent: 1042346 (1912-10-01), Henle
patent: 1553211 (1925-09-01), Barr et al.
patent: 2531956 (1950-11-01), Waldorf et al.

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