US3704932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereomicroscope
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1971-11-22
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Granted: 1972-12-05
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Expires: 1991-11-22
Abstract
Abstract In a stereomicroscope with two parallel image-forming bundles of light beams and oblique image viewing a Schmidt prism is so arranged that either bundle of light beams impinges completely on only one respective roof surface of the Schmidt prism. Two sets of reflectors in Rhombus arrangement are provided behind the Schmidt prism in the direction of light travel so as to deflect a respective one of the beams emerging from the prism to the eyepieces. The arrangement allows a distortion-free adjustment of the eye distance; and in the manufacture of the component parts of the system less accuracy may be observed compared with prior art systems.
Inventors
- 👤 Dieter Schick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20; G02B21/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
An image deflection system for deflecting an image produced by a stereomicroscope, comprising: a. optical means to produce two image-forming beams derived from an object; b. a Schmidt prism so located in the paths of both of the imageforming beams produced by the optical means that each of the beams impinges on only a respective one of the two roof surfaces of the prism; and c. two sets of reflectors in Rhombus arrangement, each set being arranged to deflect a respective one of the beams emerging from the prism to an observation arrangement.
Claim 2
Dependent Claim
93 words
An image deflection system for deflecting an image produced by a stereomicroscope, comprising: a. optical means to produce two image-forming beams derived from an object; b. a Schmidt prism so located in the paths of both of the imageforming beams produced by the optical means that each of the beams impinges on only a respective one of the two roof surfaces of the prism; and c. two sets of reflectors in Rhombus arrangement, each set being arranged to deflect a respective one of the beams emerging from the prism to an observation arrangement.
Claim 3
Dependent Claim
21 words
A system as claimed in claim 1, wherein the two sets of reflectors are so arranged that the beams mutually cross.
Claim 4
Dependent Claim
29 words
A system as claimed in claim 1, wherein each set of reflectors comprises at least one reflector mounted to be pivotable about the axis of the beam impinging thereon.
References Cited (Backward Citations)
CA719076A
Cited
US1862031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |