Title:
基準照射光検出装置
Document Type and Number:
Japanese Patent JP4152504
Kind Code:
B2
Abstract:
Conventional reference beam detecting apparatus require the use of transits and levels in addition to the reference beam detecting apparatus itself to make the operation of determining the height of construction very cumbersome. A reference beam detecting apparatus 404 according to the invention comprises a first light receiving section 412 and a second light receiving section 414. The angle SFH formed by the first light receiving section 412 and the front surface of the apparatus main body and the angle SFG formed by the second light receiving section 414 and the front surface of the apparatus main body are same and equal to about 30° . The reference beam detecting apparatus further comprises a light receiving position display section 118, a notch 140 and a data display section 404. An angular displacement computing circuit determines the angular displacement of the reference beam detecting apparatus 404 on the basis of the output signal of a laser beam detecting circuit to correct the error due to the angular displacement of the reference beam detecting apparatus.
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Inventors:
Takaaki Yamazaki
Application Number:
JP32176498A
Publication Date:
September 17, 2008
Filing Date:
November 12, 1998
Export Citation:
Assignee:
Topcon Co., Ltd.
International Classes:
G01C5/00; G01C15/00; G01C15/06
Domestic Patent References:
| JP8122072A | ||||
| JP1232213A |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Fumiaki Otsuka
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
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