GB899835A - Semiconductive two dimensional discriminating system of a photoelectric character - Google Patents
Semiconductive two dimensional discriminating system of a photoelectric characterInfo
- Publication number
- GB899835A GB899835A GB1146/60A GB114660A GB899835A GB 899835 A GB899835 A GB 899835A GB 1146/60 A GB1146/60 A GB 1146/60A GB 114660 A GB114660 A GB 114660A GB 899835 A GB899835 A GB 899835A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grain boundary
- photo
- light spot
- contacts
- jan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000013078 crystal Substances 0.000 abstract 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 229910052732 germanium Inorganic materials 0.000 abstract 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052738 indium Inorganic materials 0.000 abstract 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
- G01S3/782—Systems for determining direction or deviation from predetermined direction
- G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
- G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
899,835. Photo-electric tracking apparatus. GENERAL MILLS Inc. Jan. 12, 1960 [Jan. 13, 1959], No. 1146/60. Class 40(7). [Also in Group XXXVI] In a target tracking system a light spot from the target is imaged at 32 on to a photo-cell 10 capable of providing two outputs representing the displacement of the light spot in two co-ordinate directions. The photo-cell is of N-type germanium having a central grain boundary 12 and ohmic contacts 14, 16 on its ends. At each end of the grain boundary is a rectifying indium contact 18, 20. The output between contacts 14, 16 is shown in Fig. 2 changing sign abruptly at the grain boundary; that between contacts 18, 20 is shown in Fig. 3 is zero at the horizontal axis of symmetry of the crystal. The outputs are applied respectively to amplifiers 44, 46 to control servomotors 40, 42 which rotate a mirror 30 about vertical and horizontal axes to maintain the light spot on the grain boundary and on the horizontal axis of symmetry of the crystal. The servo mechanism may be replaced by voltmeters or cathode ray tubes providing a two dimensional display of spot position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US786491A US3038079A (en) | 1959-01-13 | 1959-01-13 | Semiconductive differential photodetector for two dimensional discrimination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB899835A true GB899835A (en) | 1962-06-27 |
Family
ID=25138749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1146/60A Expired GB899835A (en) | 1959-01-13 | 1960-01-12 | Semiconductive two dimensional discriminating system of a photoelectric character |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3038079A (en) |
| GB (1) | GB899835A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3135869A (en) * | 1960-12-22 | 1964-06-02 | Kollsman Instr Corp | Scanning system for photosensitive light tracking device |
| US3193689A (en) * | 1961-03-24 | 1965-07-06 | Perkin Elmer Corp | Photosensitive wire diameter gauge |
| US3121795A (en) * | 1961-05-05 | 1964-02-18 | Ncr Co | Photovoltaic apparatus for measuring displacement of an element |
| US3105625A (en) * | 1961-11-16 | 1963-10-01 | Barnes Eng Co | Rod mill loop control by imaging loop on differential detector system |
| US3211911A (en) * | 1962-09-11 | 1965-10-12 | Justin M Ruhge | Method and photocell device for obtaining light source position data |
| US3875402A (en) * | 1963-01-23 | 1975-04-01 | Massachusetts Inst Technology | Photosensitive tracking device with A-C readout of position of image on special photocell |
| US3249760A (en) * | 1963-02-11 | 1966-05-03 | Electro Optical Systems Inc | Pressure gauge instrument |
| US3356848A (en) * | 1963-04-03 | 1967-12-05 | Martin Marietta Corp | Electro-optical error measuring system for determining target displacement |
| US4107530A (en) * | 1966-01-26 | 1978-08-15 | Lockheed Aircraft Corporation | Infrared acquisition device |
| US3504182A (en) * | 1966-10-14 | 1970-03-31 | North American Rockwell | Optical communication system |
| IT1274451B (en) * | 1995-05-09 | 1997-07-17 | Finmeccanica Spa | METHOD AND EQUIPMENT FOR DETERMINING THE RELATIVE POSITIONING OF BODIES. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2641712A (en) * | 1951-07-13 | 1953-06-09 | Bell Telephone Labor Inc | Photoelectric device |
| US2976758A (en) * | 1957-01-02 | 1961-03-28 | Rca Corp | Protective system against damaging rays |
-
1959
- 1959-01-13 US US786491A patent/US3038079A/en not_active Expired - Lifetime
-
1960
- 1960-01-12 GB GB1146/60A patent/GB899835A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3038079A (en) | 1962-06-05 |
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