US3922097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical apparatus for the microscopic examination of the internal walls of an opening
Assignee: Societe dOptique Precision Electronique et Mecanique SOPELEM SA
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Filing: 1974-05-28
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Granted: 1975-11-25
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Expires: 1994-05-28
Abstract
Abstract A device for mounting in or incorporation in a microscope apparatus for examining the walls of orifices of small size, the device including a plurality of mirrors carried on a mount and inclined relative to a common axis toward which they face, the mirrors diverging from that axis in the direction of the apparatus and away from the orifice to be examined.
Inventors
- 👤 Philippe Nachet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:48
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/2407; G02B21/00; G02B21/06; G02B21/08; G02B21/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
Optical device for the microscopic examination of the inner walls of an orifice, comprising a mounting for location between a microscope apparatus and the orifice centered on the optical axis of the apparatus, and plane mirrors providing images of the walls of the orifice arranged in the mounting whose reflecting surfaces are turned towards an axis of the mounting which will be on the optical axis, the mirrors being inclined in relation to the mounting axis, so that the spacing of the mirrors from that axis in relation will decrease in the direction from the lens to the orifice.
Claim 2
Dependent Claim
99 words
Optical device for the microscopic examination of the inner walls of an orifice, comprising a mounting for location between a microscope apparatus and the orifice centered on the optical axis of the apparatus, and plane mirrors providing images of the walls of the orifice arranged in the mounting whose reflecting surfaces are turned towards an axis of the mounting which will be on the optical axis, the mirrors being inclined in relation to the mounting axis, so that the spacing of the mirrors from that axis in relation will decrease in the direction from the lens to the orifice.
References Cited (Backward Citations)
US2028430A
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US2372192A
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US2987960A
Cited
US3067648A
Cited
US3283653A
Cited
US3670157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |