Optical: systems and elements – Compound lens system – Microscope
Patent
1996-08-08
1998-12-08
Nguyen, Thong
Optical: systems and elements
Compound lens system
Microscope
359363, 359384, 359434, 359861, G02B 2100, G02B 2136, G02B 2300, G02B 508
Patent
active
058478663
ABSTRACT:
A microscope apparatus having an objective optical system for condensing a beam emitted from a sample to form an intermediate image; a lens-barrel optical system for focusing a beam from the intermediate image to form an observation image; and an eyepiece optical system for enlarging and projecting a beam from the observation image; wherein the lens-barrel optical system includes a relay lens system for focusing a beam from the intermediate image formed by the objective optical system to form the observation image and guiding a beam from the observation image to the eyepiece optical system; and a beam rotating unit having a plurality of reflecting members three-dimensionally arranged in an optical path between the objective optical system and the observation image, wherein the plurality of reflecting members successively reflect the beam from the objective optical system to invert the beam about an optical axis of the relay lens system, thereby forming the observation image in the form of an inverted image. This arrangement permits the lens-barrel optical system to form the inverted observation image as focusing the beam from the inverted intermediate image in the compact, easy, and cheap structure.
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patent: 4527869 (1985-07-01), Nihoshi
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patent: 5146363 (1992-09-01), Nagano
patent: 5239171 (1993-08-01), Takabayashi et al.
patent: 5557456 (1996-09-01), Garner et al.
Nguyen Thong
Nikon Corporation
Robinson Mark A.
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