US3572907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical cell for attenuating, scattering and polarizing electromagnetic radiation
Assignee: CHAIN LAKES RES CORP
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Filing: 1969-04-28
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Granted: 1971-03-30
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Expires: 1989-04-28
Abstract
Abstract An optical cell for attenuating, scattering or phase shifting electromagnetic radiation such as light comprising an annular member telescopically engaged with a mounting ring to thereby define a chamber. The ends of the chamber are formed by windows supported in the mounting ring and in a cylindrical frame in contiguous relationship with the annular member. A fluid having light affecting properties fills the chamber and is transferable between the chamber and a reservoir in fluid communication with the chamber. Telescopic operation of the optical cell varies the length of the fluid light path between the windows, to thereby cause variable attentuating and the like effect upon traversing light.
Inventors
- 👤 Ivan Cindrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:55
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/06; G02B26/00; G02B26/02; G02B5/00; G02B5/20; G02B5/22; G02B5/24; G02B5/30; G02B5/3025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
164 words
An optical cell of variable effective axial length comprising in combination: a first annular collar, a first transparent planar window member carried by the first collar to define one axial end of the cell, a second annular collar disposed radially over and sealingly engaging the first collar, a second transparent planar window member carried by the second collar to define the other axial end of the cell, means for effecting relative axial displacement between the first and second annular collars to vary the axial dimension of the volume between the transparent window members, a third annular member disposed radially over and fixed to the second collar and defining a closed annular space externally surrounding the second collar, extensible annular bladder means disposed in the space, a fluid conduit extending radially through the second collar from said volume to said bladder means to permit the passage of fluid therethrough in both direction, and a radiation attenuating fluid in said volume and in said bladder means.
Claim 2
Dependent Claim
164 words
An optical cell of variable effective axial length comprising in combination: a first annular collar, a first transparent planar window member carried by the first collar to define one axial end of the cell, a second annular collar disposed radially over and sealingly engaging the first collar, a second transparent planar window member carried by the second collar to define the other axial end of the cell, means for effecting relative axial displacement between the first and second annular collars to vary the axial dimension of the volume between the transparent window members, a third annular member disposed radially over and fixed to the second collar and defining a closed annular space externally surrounding the second collar, extensible annular bladder means disposed in the space, a fluid conduit extending radially through the second collar from said volume to said bladder means to permit the passage of fluid therethrough in both direction, and a radiation attenuating fluid in said volume and in said bladder means.
Claim 3
Dependent Claim
51 words
The optical cell defined in claim 1 wherein said means for effecting relative axial displacement between the first and second annular collars comprises a fourth annular member threadedly engaging the second collar and axially abutting the first collar, and means for effecting an axial bias between the first and second collars.
Claim 4
Dependent Claim
44 words
The optical cell defined in claim 1 wherein said bladder means comprises a pair of substantially identical semicircular extensible bladders disposed in said space in oppositely symmetrical relation, said fluid conduit comprising a T-shaped fitting having terminal ends in fluid communication with respective bladders.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |