Optical illuminating and observing apparatus
August 18, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOptical system of colposcope Eye fundus camera having variable power photographing optical system Variable magnification apparatus having illumination compensating ability Ophthalmoscopic slit lamp Automatic substage illumination for microscopes Projecting apparatus Variable image magnification eye fundus camera Binocular zoom microscope Optical apparatus using polarized light Magnification changing mechanism of a microscope InventorsAssigneeApplicationNo. 329898 filed on 04/27/1989US Classes:359/380, Variable magnification359/385, Illuminator359/432Variable magnificationExaminersPrimary: Arnold, Bruce Y.Assistant: Nguyen, Thinh Attorney, Agent or FirmInternational ClassesG02B 007/02G02B 021/06 Foreign Application Priority Data1987-06-30 JPAbstractAn optical illuminating and observing apparatus having a first drive system for changing the magnification of the apparatus and a second drive system for changing the illuminating field of the apparatus. The two drive systems can be operated either in an interlocking relationship or independently of each other. In a preferred embodiment, a clutch-gear is used to connect and disconnect the two drive systems to or from each other.Field of SearchIncluding eye photographyIncluding projected target image Including diaphram or slit Including illuminator Microscope With viewed screen Spacing of optical elements axially adjustable Variable magnification Imaging elements movable in and out of optical axis Entire microscope adjustable along optical axis Focus adjustment With rotatable adjustment Illuminator Using polarized light With annular lighting structure With optical switching means With illumination and viewing paths coaxial at the image field With illuminator support With macro-type focusing Adjusting mechanism Three or more movable lens groups Motor driven Condition responsive Auto focusing With adjustment lock | |
