US3582212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabry-perot resonators
Assignee: Jenoptik AG
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Filing: 1968-08-27
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Granted: 1971-06-01
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Expires: 1988-08-27
Abstract
Abstract A Fabry-Perot resonator comprises two plates which are displaceable relatively to each other by means of concentric series of electrostrictive rods, the number of rods being the same in each series. The rods of the consecutive series are arranged along radii which enclose given angles. The consecutive rods are interconnected in meanderlike fashion. Two opposite surfaces of each rod bear electrically conductive linings, so that applied voltage produces an electric field between these linings. Differential influences on two radially consecutive rods produce changes in the distance apart of, or the angle between, the plates. Equality in the dimensions and thermal properties of the rods renders the resonator insensitive to thermal influence. Suitable coordination of the plate carriers relative to each other permits relatively great changes in the distances of the plates from each other and at the same time excludes thermal influence.
Inventors
- 👤 Gerhard Hesse
- 👤 Wolfgang Reimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:06
CPC Classifications
G; G01; G01B; G01B9/00; G01B9/02; G01J; G01J3/00; G01J3/12; G01J3/26; G01B2290/00; G01B2290/25
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A Fabry-Perot resonator comprising two optical plates at a variable distance from one another, rods of electrostrictive material extending parallel to the distance between said two plates, elements for interconnecting said rods, said rods being arranged in at least two equal series in radial juxtaposition to each other, every such two of said rods as are adjacent to one another along a radius being interconnected alternately at their one ends and their other ends, each of said rods bearing electrically conductive linings along their longitudinal extension on two opposite surfaces for producing an electric field, each of said linings being connected with a voltage source through at least one voltage control, and mechanical connecting means, said connecting means and said rods connecting said plates with each other.
Claim 2
Dependent Claim
127 words
A Fabry-Perot resonator comprising two optical plates at a variable distance from one another, rods of electrostrictive material extending parallel to the distance between said two plates, elements for interconnecting said rods, said rods being arranged in at least two equal series in radial juxtaposition to each other, every such two of said rods as are adjacent to one another along a radius being interconnected alternately at their one ends and their other ends, each of said rods bearing electrically conductive linings along their longitudinal extension on two opposite surfaces for producing an electric field, each of said linings being connected with a voltage source through at least one voltage control, and mechanical connecting means, said connecting means and said rods connecting said plates with each other.
Claim 3
Dependent Claim
22 words
A Fabry-perot resonator as claimed in claim 1, wherein the connections of said rods with said plates or said carriers are detachable.
Claim 4
Dependent Claim
29 words
A Fabry-Perot resonator as claimed in claim 2, wherein the same electric potentials are applied to the linings of the interfacing sides of the rods of two neighboring series.
Claim 5
Dependent Claim
29 words
A Fabry-Perot resonator as claimed in claim 3, wherein said rods are arranged in an even number of equal series and every two series have the same thermal properties.
Claim 6
Dependent Claim
76 words
A Fabry-Perot resonator as claimed in claim 4, wherein the series or rods are all of the same length and the connecting means are made up of two telescoping bodies of different materials which touch each other along at least one peripheral line of contact and extend in different lengths parallel to the rods and which have such coefficients of expansion that both bodies when exposed to a change of temperature expand by the same amount.
Claim 7
Dependent Claim
49 words
A Fabry-Perot resonator as claimed in claim 5, wherein said two bodies are displaceable relatively to one another, one of said bodies carrying a scale and the other of said bodies carrying an index, said scale and said index working against one another for the reading of the displacement.
Claim 8
Dependent Claim
31 words
A Fabry-Perot resonator as claimed in claim 6 comprising two series of rods, wherein each of said bodies carries one of said series and both series extend along the same direction.
Claim 9
Dependent Claim
17 words
A Fabry-Perot resonator as claimed in claim 6, wherein one of said bodies carries all said series.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |