Patent FR781384A successfully refreshed from Google Patents.
Patent US3677618A successfully refreshed from Google Patents.
US3677618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binoculars having stabilizing reflectors
Assignee: Optical Research and Development Corp
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Filing: 1970-09-28
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Granted: 1972-07-18
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Expires: 1990-09-28
Abstract
Abstract An optical instrument is disclosed having a single light input, paired variable ocular outputs and a folded and split light path therebetween. Provision is made in the folding of the light path for the insertion of a stabilizing mirror to remove apparent image vibration due to ambient instrument vibration.
Inventors
- 👤 Arnold J Schwemin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:59
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/646
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
A hand held optical instrument comprising: an objective for providing a converging light path; a mirror located in said light path for retrodirecting said converging light path toward said objective; means for mounting said mirror for combined stabilizing pivotal motion relative to two axes, each axis being orthogonal to both the light path between said objective and mirror and the remaining axis; beam splitter means between said objective and mirror and within said retrodirected light path for providing first and second ocular paths; and means for periscoping away from said beamsplitter a portion of each of said ocular paths along path portions substantially parallel to and separate from the path between said objective and mirror.
Claim 2
Dependent Claim
115 words
A hand held optical instrument comprising: an objective for providing a converging light path; a mirror located in said light path for retrodirecting said converging light path toward said objective; means for mounting said mirror for combined stabilizing pivotal motion relative to two axes, each axis being orthogonal to both the light path between said objective and mirror and the remaining axis; beam splitter means between said objective and mirror and within said retrodirected light path for providing first and second ocular paths; and means for periscoping away from said beamsplitter a portion of each of said ocular paths along path portions substantially parallel to and separate from the path between said objective and mirror.
Claim 3
Dependent Claim
23 words
The invention of claim 1 and wherein said path portions are mounted for relative rotation about an axis between said objective and mirror.
Claim 4
Dependent Claim
29 words
The invention of claim 1 and wherein each of said path portions is equidistant from and parallel to a portion of the light path between said objective and mirror.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |