JPS5578208A - Detector for tilt angle - Google Patents
Detector for tilt angleInfo
- Publication number
- JPS5578208A JPS5578208A JP15344078A JP15344078A JPS5578208A JP S5578208 A JPS5578208 A JP S5578208A JP 15344078 A JP15344078 A JP 15344078A JP 15344078 A JP15344078 A JP 15344078A JP S5578208 A JPS5578208 A JP S5578208A
- Authority
- JP
- Japan
- Prior art keywords
- photo
- laser
- tilt angle
- polarized
- detector
- 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.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To obtain the tilt angle signal depending on the slope of photo detector, by providing linear polarized plate to the laser projector, and operating the deviation of the signals by two photo receptions, through the photo detection via the polarized plate by a given angle +θ, -θ, for the output beam.
CONSTITUTION: The linear polarized plate 3 is fitted to the projector 2 of the laser oscillator 1 and the laser beam L is outputted through only the light of vertical (hereinafter Y direction) component among laser lights. On the other hand, the tilt angle detector 8 is provided with the operation part 6 of the construction machine 5 via the support 7 to receive the laser light L. The photo detector 10 of the unit 8 has the polarized plates 11, 12 of semi-circular arc shape and the photo detectors 13, 14 of the same shape. The deflection shafts Y1, Y2 of the polarized plates 11, 12 have angles of specified one shifted by +θ and -θ to Y axis. Then, the Y axis component through the polarized plates 11, 12 is Ey cosθ (where; Ey is the incident electric field). The tilt of wheels Δθ is obtained as a value proportional to twice the difference between the both values, resulting in obtaining the tilt angle of wheels easily.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15344078A JPS5578208A (en) | 1978-12-11 | 1978-12-11 | Detector for tilt angle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15344078A JPS5578208A (en) | 1978-12-11 | 1978-12-11 | Detector for tilt angle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5578208A true JPS5578208A (en) | 1980-06-12 |
Family
ID=15562568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15344078A Pending JPS5578208A (en) | 1978-12-11 | 1978-12-11 | Detector for tilt angle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5578208A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103616017A (en) * | 2013-11-20 | 2014-03-05 | 国网河南省电力公司南阳供电公司 | Positioning device of electric power pole tower |
JP2015059760A (en) * | 2013-09-17 | 2015-03-30 | 株式会社トプコン | Direction detection device and survey system |
-
1978
- 1978-12-11 JP JP15344078A patent/JPS5578208A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015059760A (en) * | 2013-09-17 | 2015-03-30 | 株式会社トプコン | Direction detection device and survey system |
CN103616017A (en) * | 2013-11-20 | 2014-03-05 | 国网河南省电力公司南阳供电公司 | Positioning device of electric power pole tower |
CN105547263A (en) * | 2013-11-20 | 2016-05-04 | 河南行知专利服务有限公司 | Application method of electric tower positioning device |
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