US3590246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for modulating radiation energy and for bundling it into a very small section
Assignee: Eltro GmbH and Co
•
Filing: 1969-01-17
•
Granted: 1971-06-29
•
Expires: 1989-01-17
Abstract
Abstract The invention provides a modulation device for electromagnetic radiation such as infrared radiation and the like. The modulator itself consists of a plurality of strips separated by slots through which the radiation can pass. This group of strips constitutes a grid which is rotated about an axis and which feeds modulated energy to a radiation-responsive device. Between the grid and radiation responsive device is provided an optical system consisting of a plurality of fibers which at one end are formed in groups corresponding to the aforesaid slots and which at the other end are bundled into a circular arrangement corresponding to the radiation-responsive device.
Inventors
- 👤 Franz Menke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:19
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/0403; G01J1/0407; G01J1/0411; G01J1/0425; G01J1/0437; G01S; G01S3/00; G01S3/78; G01S3/781; G02; G02B; G02B6/00; G02B6/04; G02B6/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
Apparatus comprising means to receive electromagnetic radiation, radiation means responsive to said radiation, and modulation means interposed between the first two said means and including bridges opaque to said radiation with slots being provided between the bridges through which the radiation can pass and fiber optical means including radiation-conducting fibers having radiation-entrance ends packed in groups corresponding to said slots and aligned in the direction of radiation incidence and radiation-exit ends combined in a bundle corresponding to said means to receive electromagnetic radiation, said modulation means including said fiber-optical means being rotatably supported about an axis parallel to said direction of radiation incidence.
Claim 2
Dependent Claim
103 words
Apparatus comprising means to receive electromagnetic radiation, radiation means responsive to said radiation, and modulation means interposed between the first two said means and including bridges opaque to said radiation with slots being provided between the bridges through which the radiation can pass and fiber optical means including radiation-conducting fibers having radiation-entrance ends packed in groups corresponding to said slots and aligned in the direction of radiation incidence and radiation-exit ends combined in a bundle corresponding to said means to receive electromagnetic radiation, said modulation means including said fiber-optical means being rotatably supported about an axis parallel to said direction of radiation incidence.
Claim 3
Dependent Claim
12 words
Apparatus as claimed in claim 1 wherein the bridges are parallel strips.
Claim 4
Dependent Claim
14 words
Apparatus as claimed in claim 2 wherein the bundle is of circular cross section.
Claim 5
Dependent Claim
15 words
Apparatus as claimed in claim 3 comprising a rotatable housing supporting all of said means.
Claim 6
Dependent Claim
22 words
Apparatus as claimed in claim 1 comprising a counter coupled to the first said means to count the modulated radiation received thereby.
Claim 7
Dependent Claim
32 words
Apparatus as claimed in claim 5 comprising a gate coupled to the counter to pass a signal when the modulated radiation includes a number of pulses corresponding to the number of slots.
Claim 8
Dependent Claim
15 words
Apparatus as claimed in claim 2 wherein the bridges and slots are rectilinear in shape.
References Cited (Backward Citations)
US2981842A
Cited
US3106642A
Cited
US3239672A
Cited
US3224279A
Cited
US3411010A
Cited
US3411011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |