GB1454625A - Four-quadrant photoelectric receiver - Google Patents
Four-quadrant photoelectric receiverInfo
- Publication number
- GB1454625A GB1454625A GB3851874A GB3851874A GB1454625A GB 1454625 A GB1454625 A GB 1454625A GB 3851874 A GB3851874 A GB 3851874A GB 3851874 A GB3851874 A GB 3851874A GB 1454625 A GB1454625 A GB 1454625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detector
- quadrant
- direction finder
- star
- lens
- 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
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
- G01S3/783—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from static detectors or detector systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Focusing (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
1454625 Direction finder ELTRO GmbH GES FUR STRAHLUNGSTECHNIK 3 Sept 1974 [30 Oct 1973] 38518/74 Heading H4D In a photoelectric direction finder, of the kind comprising a lens producing a circular out of focus image 19, Fig. 4, of a point source object on a quadrant type photodetector 8, 9, 10, 11 the X, Y position output signals of the direction finder, based directly of the outputs of the four detecting elements 8, 9, 10 11, vary non-linearly with the position of the image. To achieve the linearity and/or produce a signal useful in determining the distance of the object, a fifth detector element 12 may be formed on the quadrant detector taking out a section of each of the quadrant detector elements 8, 9, 10, 11. The fifth element may have the straight line section star shape as shown, or may be a star formed from four hyperboli, Fig. 5 (not shown). Alternatively, a star shaped diaphragm may be interposed between the lens and the detector to cast an inhibiting shadow on said detector.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732354244 DE2354244C3 (en) | 1973-10-30 | 1973-10-30 | Four-quadrant receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1454625A true GB1454625A (en) | 1976-11-03 |
Family
ID=5896806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3851874A Expired GB1454625A (en) | 1973-10-30 | 1974-09-03 | Four-quadrant photoelectric receiver |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2354244C3 (en) |
| FR (1) | FR2249342B3 (en) |
| GB (1) | GB1454625A (en) |
| IT (1) | IT1020841B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10052424C1 (en) * | 2000-10-23 | 2002-05-02 | Astrium Gmbh | Arrangement for determining the position of a light source |
-
1973
- 1973-10-30 DE DE19732354244 patent/DE2354244C3/en not_active Expired
-
1974
- 1974-09-03 GB GB3851874A patent/GB1454625A/en not_active Expired
- 1974-09-20 IT IT6985074A patent/IT1020841B/en active
- 1974-10-09 FR FR7433893A patent/FR2249342B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2249342B3 (en) | 1977-07-15 |
| DE2354244C3 (en) | 1980-05-08 |
| DE2354244A1 (en) | 1975-05-22 |
| IT1020841B (en) | 1977-12-30 |
| FR2249342A1 (en) | 1975-05-23 |
| DE2354244B2 (en) | 1975-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |