SE9702441D0 - detection Equipment - Google Patents
detection EquipmentInfo
- Publication number
- SE9702441D0 SE9702441D0 SE9702441A SE9702441A SE9702441D0 SE 9702441 D0 SE9702441 D0 SE 9702441D0 SE 9702441 A SE9702441 A SE 9702441A SE 9702441 A SE9702441 A SE 9702441A SE 9702441 D0 SE9702441 D0 SE 9702441D0
- Authority
- SE
- Sweden
- Prior art keywords
- lens
- light
- detector
- measuring cell
- signal
- Prior art date
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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/46—Indirect determination of position data
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Measurement Of Optical Distance (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A laser shines light onto an object which is reflected back through a lens onto a light-sensitive measuring cell linked to a signal generating circuit, which only sends a signal when an object is detected within a given variable detection region. Light from a laser (26) is reflected by an object (40) through a lens (20), which directs it towards a light-sensitive measuring cell (24). The optical axes (23, 27) of the laser and lens are parallel to each other. The measuring cell comprises an analogue position detector which emits signals indicating the centre point for each beam of light received. The detector is positioned below the focal point (21) of the lens and at right angles to the optical axis (23) of the lens, with most (preferably all) of its detector surface protruding sideways beyond this optical axis. The position of the lens is chosen so that light reflected by an object in front of it is focused onto the measuring cell when the object is at the very limit (30) of the detector region (28). The out ports of the detector are coupled to a signal processing circuit (32, 33) which generates a signal only when an object is detected within the adjustable detector region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9702441A SE519295C2 (en) | 1997-06-25 | 1997-06-25 | Electro optical detection system used as sensor for monitoring device on automated production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9702441A SE519295C2 (en) | 1997-06-25 | 1997-06-25 | Electro optical detection system used as sensor for monitoring device on automated production line |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9702441D0 true SE9702441D0 (en) | 1997-06-25 |
| SE9702441L SE9702441L (en) | 1998-12-26 |
| SE519295C2 SE519295C2 (en) | 2003-02-11 |
Family
ID=20407515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9702441A SE519295C2 (en) | 1997-06-25 | 1997-06-25 | Electro optical detection system used as sensor for monitoring device on automated production line |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE519295C2 (en) |
-
1997
- 1997-06-25 SE SE9702441A patent/SE519295C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE9702441L (en) | 1998-12-26 |
| SE519295C2 (en) | 2003-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |