Title: Position detecting device and inclination sensor device of surveying apparatus using the same
Application Number: 200610152410 Application Date: 2006.09.29
Publication Number: 1945208 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01C15/00
Applicant(s) Name: Topcon Corp. Address:
Inventor(s) Name: Kumagai Kaoru;Yamaguchi Shinji
Attorney & Agent: shouning zhanghua hui
Abstract:
    The present invention provided a position detecting device which can realize the miniaturization of the optical configuration of the projection optics system. A position detecting device includes: a liquid (7) having a free surface (7a); a light source (2) configured to irradiate a light flux toward the free surface (7a) of the liquid (7); a dark field pattern (4) provided between the liquid (7) and the light source (2) and configured to form a pattern of the light flux irradiated by the light source (2); a light-receiving sensor (9) configured to detect the pattern of the light flux reflected by the free surface (7a) of the liquid; and an arithmetic unit (11) configured to calculate a position of the pattern from results of detection of the light-receiving sensor (9), wherein the arithmetic unit (11) is configured to add the results of the detection of the light-receiving sensor (9) in an X-direction and a Y-direction of the light-receiving sensor (9), and the arithmetic unit is configured to calculate the position of the pattern from an output obtained by adding the results of the detection in the X-direction and the Y-direction.
Time: 7