JPS5578208A - Detector for tilt angle - Google Patents

Detector for tilt angle

Info

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
Application number
JP15344078A
Other languages
Japanese (ja)
Inventor
Yukio Yoshimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP15344078A priority Critical patent/JPS5578208A/en
Publication of JPS5578208A publication Critical patent/JPS5578208A/en
Pending legal-status Critical Current

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
JP15344078A 1978-12-11 1978-12-11 Detector for tilt angle Pending JPS5578208A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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