US4417789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Observation device
Assignee: Canon Inc
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Filing: 1980-12-31
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Granted: 1983-11-29
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Expires: 2000-12-31
Abstract
Abstract A device for observing, by use of two microscopes, two adjacent regions on two objects which are superposed with respect to the direction of an optical axis is provided with a magnifying and image projecting lens interposed between the microscopes and the objects. The two microscopes are disposed at a space interval between their optical axes which is greater than the space interval between the two adjacent regions, and the two regions of the magnified object images formed by the image projecting lens is observed through these two microscopes.
Inventors
- 👤 Ichiro Kano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:16
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
147 words
A device for simultaneously observing a plurality of sets of adjacent regions respectively on at least two objects which are superposed on each other with respect to the direction of the optical axis of said device, any one set of said adjacent regions respectively on said objects being spaced from other sets of said adjacent regions in a direction generally perpendicular to the optical axis of said device; said device comprising: (a) a single magnifying image projecting optical system for forming enlarged and projected images of said objects including said sets of said adjacent regions; and (b) a plurality of microscopes disposed with their optical axes spaced by a distance greater than the space between said any of said sets of said adjacent regions on said objects, each said microscope being positioned to observe the enlarged and projected images of one said set of said adjacent regions.
Claim 2
Independent Claim
147 words
A device for simultaneously observing a plurality of sets of adjacent regions respectively on at least two objects which are superposed on each other with respect to the direction of the optical axis of said device, any one set of said adjacent regions respectively on said objects being spaced from other sets of said adjacent regions in a direction generally perpendicular to the optical axis of said device; said device comprising: (a) a single magnifying image projecting optical system for forming enlarged and projected images of said objects including said sets of said adjacent regions; and (b) a plurality of microscopes disposed with their optical axes spaced by a distance greater than the space between said any of said sets of said adjacent regions on said objects, each said microscope being positioned to observe the enlarged and projected images of one said set of said adjacent regions.
Claim 3
Dependent Claim
26 words
The device as set forth in claim 1, wherein said magnifying image projecting optical system is telecentric at both sides of said objects and projected images.
Claim 4
Dependent Claim
23 words
The device as set forth in claim 1, wherein said magnifying image projecting system is telecentric at, at least the object side thereof.
Claim 5
Independent Claim
158 words
A device for observing first adjacent regions respectively on each of a first object and a second object superposed on each other with respect to the direction of the optical axis of the device and for simultaneously observing second adjacent regions respectively on said first and second objects, said first regions being spaced from said second regions in the direction generally perpendicular to the optical axis of the device, said device comprising: (a) a single magnifying image projecting optical system for forming enlarged and projected images of said objects, including said first regions and said second regions; and (b) a first microscope and a second microscope disposed with their optical axes spaced by a distance greater than the space between said first regions and said second regions, said first microscope observing on said objects said enlarged and projected images of said first regions and said second microscope simultaneously observing said enlarged and projected images of said second regions.
Claim 6
Independent Claim
158 words
A device for observing first adjacent regions respectively on each of a first object and a second object superposed on each other with respect to the direction of the optical axis of the device and for simultaneously observing second adjacent regions respectively on said first and second objects, said first regions being spaced from said second regions in the direction generally perpendicular to the optical axis of the device, said device comprising: (a) a single magnifying image projecting optical system for forming enlarged and projected images of said objects, including said first regions and said second regions; and (b) a first microscope and a second microscope disposed with their optical axes spaced by a distance greater than the space between said first regions and said second regions, said first microscope observing on said objects said enlarged and projected images of said first regions and said second microscope simultaneously observing said enlarged and projected images of said second regions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |