The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2003
Filed:
May. 10, 2001
Kenji Kaneko, Tokyo, JP;
Tadahisa Hoshino, Tokyo, JP;
Shinichi Suzuki, Saitama, JP;
Homu Takayama, Saitama, JP;
Takanori Yachi, Tokyo, JP;
Masayuki Ueno, Saitama, JP;
Masahiro Sakurai, Saitama, JP;
Go Watanabe, Tokyo, JP;
Pentax Precision Co., Ltd., Tokyo, JP;
Abstract
A surveying instrument having an AF apparatus, provided with a focusing lens and a collimation telescope, includes a focus detector for detecting a focus state through the collimation telescope, and a controller for moving the focusing lens of the collimation telescope to a focal position, based on the focus state detected by the focus detector. The surveying instrument includes a single focus mode at which only one detection of the output of the focus detector and only one control operation of the controller based on the detected output are carried out, and a continuous focus mode at which a plurality of detections of the output of the focus detector and a plurality of control operations of the controller based on the detected outputs are sequentially carried out, the single focus mode and the continuous mode being selectively performed.