US4756611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-purpose microscope
Assignee: Olympus Corp
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Filing: 1986-05-05
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Granted: 1988-07-12
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Expires: 2006-05-05
Abstract
Abstract A multiple-purpose microscope comprising: a stage for placing a specimen; a revolver for carrying a plurality of objective lenses; a differential interference unit mounted adjacent to the revolver so as to be moved into and out of a path of light beam; and two dichroic mirror units for reflecting fluorescence mounted so as to be moved into and out of the path of a light beam, whereby enabling its user to perform various different types of microscope examinations by a simplified examination mode changeover operation. The dichroic mirror unit for reflecting fluorescence is comprised of a dichroic mirror, an exciting filter and a barrier filter.
Inventors
- 👤 Ken Yonekubo
- 👤 Yasuo Inoue
- 👤 Itaru Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:05
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/06; G02B21/08; G02B21/086; G02B21/14; G02B21/16; G02B7/00; G02B7/02; G02B7/14; G02B7/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
210 words
A multi-purpose microscope, comprising: a microscope body; an illuminating unit mounted to said microscope body for emitting an illuminating light beam; a condensor lens unit mounted to said microscope body and including a selectable positioning unit for selectively positioning one of a cavity hole, a ring slit and a polarizing-side unit for a differential interference microscopy into a path of the light beam from said illuminating unit; a stage fixedly mounted to said microscope body; a revolver mounted to said microscope body for holding a plurality of objectives and including an analyzing-side unit for differential interference microscopy mounted for movement through a guide into and out of an optical path of said microscope body; focusing means mounted to said microscope body and coupled to said revolver for moving said revolver along said optical path of said microscope body; a fluorescent light source mounted to said microscope body at a point spaced from said optical path of said microscope body for emitting a fluorescent light beam; and a dichroic mirror unit mounted to said microscope body and being selectively insertable into said optical path of said microscope body at a point spaced from said revolver for bringing a reflecting illumination light beam from said fluorescent light source into said optical path.
Claim 2
Dependent Claim
210 words
A multi-purpose microscope, comprising: a microscope body; an illuminating unit mounted to said microscope body for emitting an illuminating light beam; a condensor lens unit mounted to said microscope body and including a selectable positioning unit for selectively positioning one of a cavity hole, a ring slit and a polarizing-side unit for a differential interference microscopy into a path of the light beam from said illuminating unit; a stage fixedly mounted to said microscope body; a revolver mounted to said microscope body for holding a plurality of objectives and including an analyzing-side unit for differential interference microscopy mounted for movement through a guide into and out of an optical path of said microscope body; focusing means mounted to said microscope body and coupled to said revolver for moving said revolver along said optical path of said microscope body; a fluorescent light source mounted to said microscope body at a point spaced from said optical path of said microscope body for emitting a fluorescent light beam; and a dichroic mirror unit mounted to said microscope body and being selectively insertable into said optical path of said microscope body at a point spaced from said revolver for bringing a reflecting illumination light beam from said fluorescent light source into said optical path.
Claim 3
Dependent Claim
22 words
A multiple-purpose microscope according to claim 1, in which: said analyzing side unit is constructed in the form of a Nomarski slider.
Claim 4
Dependent Claim
27 words
A multiple-purpose microscope according to claim 1, in which: said dichroic mirror unit for reflecting fluorescence comprises: a dichroic mirror, an exciting filter and a barrier filter.
References Cited (Backward Citations)
US3503662A
Cited
US4407569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |