Optical: systems and elements – Compound lens system – With relay
Patent
1998-11-20
2000-06-13
Nguyen, Thong
Optical: systems and elements
Compound lens system
With relay
359368, 359380, G03B 1306, G02B 2106
Patent
active
060756462
ABSTRACT:
An observation optical apparatus includes an objective unit; the first path splitting member placed on the optical axis of the objective unit for splitting an optical path from the objective unit into two; the first optical system situated on one of two optical paths split by the first path splitting member, for forming an image at least twice; the first observation device-located at the imaging position of the first optical system; the second optical system situated on the other of the two optical paths, having a higher total magnification and a larger numerical aperture than the first optical system; the second observation device located at the imaging position of the second optical system; and a stop for low magnification, placed at the pupil position of the first optical system, for reducing the numerical aperture.
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Nguyen Thong
Olympus Optical Co,. Ltd.
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