US3777160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical radiation detecting apparatus
Assignee: Siemens AG
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Filing: 1972-02-09
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Granted: 1973-12-04
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Expires: 1992-02-09
Abstract
Abstract The invention relates to an infrared position detector for determining two-dimensional position changes of the radiator. Several ring-sector formed radiation detectors are arranged in the air gap of an annular magnet and an image of the radiator is produced on one of the respective detectors by means of a reflector serving as discriminator, as well as an elliptical mirror optic. Semiconductor detectors are used as radiation detectors. The position detector is suitable for long-wave radiation and has a very small time constant.
Inventors
- 👤 P Bernt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/783
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
98 words
In an apparatus for detecting two dimensional radiation, comprising a magnet having an annular gap, radiation detecting means in said gap adapted to detect position deviation from the origin of such radiation in one dimention, said detecting means including a ring having cooperative radiation responsive sectors of semiconductor elements juxtaposed to one another, means for receiving and transducing the output of an electromagnetic energy radiator to said apparatus, and means for producing an image of an electromagnetic energy radiator as a function of a change in position of origin thereof on at least one of said semiconductor elements.
Claim 2
Dependent Claim
98 words
In an apparatus for detecting two dimensional radiation, comprising a magnet having an annular gap, radiation detecting means in said gap adapted to detect position deviation from the origin of such radiation in one dimention, said detecting means including a ring having cooperative radiation responsive sectors of semiconductor elements juxtaposed to one another, means for receiving and transducing the output of an electromagnetic energy radiator to said apparatus, and means for producing an image of an electromagnetic energy radiator as a function of a change in position of origin thereof on at least one of said semiconductor elements.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1, wherein said semiconductor elements are responsive to a photoelectromagnetic effect.
Claim 4
Dependent Claim
22 words
Apparatus according to claim 1, wherein said semiconductor elements are comprised of a semiconductor material responsive to an optically induced Ettingshausen-Nernst effect.
Claim 5
Dependent Claim
44 words
Apparatus according to claim 3, wherein the semiconductor elements consist of a semiconductor material, the crystal of which contains eutectic precipitations of a second electrically conducting crystalline phase disposed in parallel to one another and vertically to the irradiated surface of said semiconductor elements.
Claim 6
Dependent Claim
22 words
Apparatus according to claim 4, wherein said semiconductor elements consist of indium antimonide (InSb) and said precipitations consist of nickel antimonide (NiSb).
Claim 7
Dependent Claim
67 words
Apparatus according to claim 1, wherein said semiconductor elements comprise four in number, means for electrically insulating said elements from one another, further including means for connecting those of said elements disposed in juxtaposition in electrical opposition, and means for deriving an output signal from said detector elements indicative of a change in the angle of the received radiation relative to the optical axis of the apparatus.
Claim 8
Dependent Claim
36 words
Apparatus according to claim 1, wherein said receiving and transducing means comprise a radiation collector, a discriminator, a mirror optic and said detector riNg, said discriminator and mirror each having reflecting surfaces forming rotational conical sections.
Claim 9
Dependent Claim
26 words
Apparatus according to claim 7, wherein the reflecting surface of said discriminator comprises a cone shaped shell and that of said mirror optic comprises an ellipsoid.
Claim 10
Dependent Claim
75 words
Apparatus according to claim 8, wherein the large main axis of the ellipse generating the reflection surface of said mirror optic equals the sum of the distance R of one of its focal points on the surface of said detector ring from the center of said ring and of the distance h of its second focal point on the apex of said discriminator cone from the plane of the irradiated surface of said detector ring.
Claim 11
Dependent Claim
40 words
Apparatus according to claim 9, wherein said discriminator and said mirror optic comprise means for reproducing adjacent the apex of said discriminator the focal circle consisting of the sum of the focal points on the surface of said detector ring.
Claim 12
Dependent Claim
45 words
Apparatus according to claim 10, wherein the distance r of the focal point adjacent the apex of said discriminator from the optical axis substantially equals 1/10 of the distance R of the focal point on the surface of said detector ring from the optical axis.
Claim 13
Dependent Claim
36 words
Apparatus according to claim 7, wherein the reflection surface of said discriminator has the form of a hyperboloid and the reflection surface of said mirror optic has the form of an ellipsoid which is confocal therewith.
Claim 14
Dependent Claim
24 words
Apparatus according to claim 7, wherein the reflection surfaces of said discriminator and of said mirror optic, respectively, have the form of a paraboloid.
Claim 15
Dependent Claim
21 words
Apparatus according to claim 1, wherein said semiconductor elements are comprised of a material which is responsive to an electromagnetic effect.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |