Title:
レーザ受信装置
Document Type and Number:
Japanese Patent JP3811171
Kind Code:
B2
Abstract:
In a laser receiver receiving a laser beam from a laser transmitter and a laser receiving system composed of a plurality of laser receivers, a plurality of photo devices are arranged on an acceptance surface so that acceptance angles of the laser beam thereof are mutually different in order to detect distances between an acceptance position of a center point of a received laser beam on an acceptance surface and a reference point and an elevation angle of the received laser beam from a reference surface. Also, distance detection means respectively compare acceptance levels of the photo devices detected by the level detection means with thresholds, thereby detecting distance between the center point of the laser beam and the reference point of the acceptance surface by combination of comparison results thereof. Elevation angle detection means respectively compare acceptance levels of the photo devices detected by the level detection means with thresholds, thereby detecting elevation angles from the reference surface by combination of comparison results thereof.
Inventors:
Hiroki Akano
Application Number:
JP2004534060A
Publication Date:
August 16, 2006
Filing Date:
September 02, 2002
Export Citation:
Assignee:
富士通株式会社
International Classes:
G01B11/00; G01C21/02; G01C21/24; G01J1/42; G01S3/781; G01S3/783; G01S3/784; G01S11/12; G03G15/04; H01S3/00; G01S5/16
Domestic Patent References:
| JP2001111090A | ||||
| JP1098915A | ||||
| JP2502854A | ||||
| JP5145489A | ||||
| JP2115708A | ||||
| JP7253316A | ||||
| JP8043198A | ||||
| JP3099287A | ||||
| JP61191902A | ||||
| JP2004077080A |
Foreign References:
| US4769531 |
Attorney, Agent or Firm:
Shuji Moizumi
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