US3608996A
Expired / Lapsed
US
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Optical path detour stabilization system
Assignee: Optigon Research and Development Corp
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Filing: 1968-09-04
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Granted: 1971-09-28
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Expires: 1988-09-04
Abstract
Abstract An optical stabilizing device in which the image from an objective lens is passed through optics on an inertially stabilized platform, said platform comprising optics which divert the light rays from the optical path and return the light rays to the path in axial alignment with the light ray prior to divergence, the additional light path portion being a distance equal to one focal length of the objective lens.
Inventors
- 👤 William E Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:42
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/646
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
196 words
An image-stabilizing system comprising an objective lens means adapted to form an image; viewing means optically aligned and spaced from said objective lens means for viewing the image formed by the objective lens means, said viewing means and objective lens means rigidly mounted with respect to each other, an optical train comprised of an optically aligned optical path detour defined by an even number of reflecting surfaces arranged to provide an unrotated image and rigidly mounted with respect to each other and interposed between said objective lens means and said viewing means in the optical path between said objective lens means and the viewing means, said optical train is formed to increase the optical path distance between the objective lens means and the viewing means a distance substantially equal to the focal length of the objective lens means, said reflective surfaces optically aligned to receive light from the objective means, deflect the light and redirect the light toward the viewing means; means pivotally mounting said optical train for free movement relAtive to the objective lens means and viewing means; and means inertially stabilizing said optical train to maintain its orientation along the desired line of sight.
Claim 2
Dependent Claim
196 words
An image-stabilizing system comprising an objective lens means adapted to form an image; viewing means optically aligned and spaced from said objective lens means for viewing the image formed by the objective lens means, said viewing means and objective lens means rigidly mounted with respect to each other, an optical train comprised of an optically aligned optical path detour defined by an even number of reflecting surfaces arranged to provide an unrotated image and rigidly mounted with respect to each other and interposed between said objective lens means and said viewing means in the optical path between said objective lens means and the viewing means, said optical train is formed to increase the optical path distance between the objective lens means and the viewing means a distance substantially equal to the focal length of the objective lens means, said reflective surfaces optically aligned to receive light from the objective means, deflect the light and redirect the light toward the viewing means; means pivotally mounting said optical train for free movement relAtive to the objective lens means and viewing means; and means inertially stabilizing said optical train to maintain its orientation along the desired line of sight.
Claim 3
Dependent Claim
89 words
An image-stabilizing system as set forth in claim 1 wherein said viewing means comprises an ocular eyepiece system and said optical train is formed to increase the optical path length between the objective lens means and viewing means a distance approximately equal to (1 + or - (1/M)) times the focal length of the objective lens means and viewing means system wherein M equals the magnification of the stabilizing system and wherein the minus sign is used for erecting telescopes and the plus sign is used for inverting telescopes.
References Cited (Backward Citations)
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US2389142A
Cited
US3261260A
Cited
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Cited
GB1015916A
Cited
US3424520A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |