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:
Mar. 18, 2008
Filed:
Jun. 08, 2004
Toru Noda, Kanagawa, JP;
Kazuhiko Onuma, Chiba, JP;
Yasufumi Fukuma, Tokyo, JP;
Koji Nishio, Tokyo, JP;
Hidetaka Aeba, Tokyo, JP;
Yoshio Okazaki, Tokyo, JP;
Masaru Sato, Tokyo, JP;
Yasuo Kato, Tokyo, JP;
Toru Noda, Kanagawa, JP;
Kazuhiko Onuma, Chiba, JP;
Yasufumi Fukuma, Tokyo, JP;
Koji Nishio, Tokyo, JP;
Hidetaka Aeba, Tokyo, JP;
Yoshio Okazaki, Tokyo, JP;
Masaru Sato, Tokyo, JP;
Yasuo Kato, Tokyo, JP;
Kabushiki Kaisha Topcon, Tokyo, JP;
Abstract
An observation apparatus is provided. An apex angle of a contact prism is inputted by operating an apex angle setting knob of a control panel. A fining angle of the contact prism is inputted by operating a fitting angle setting knob. A control unit determines the amount of correction for astigmatism of a left observation optical system and the amount of correction for astigmatism of a right observation optical system based on a recognized observation magnification and the inputted apex angle. An axial angle for the astigmatism of the left observation optical system and an axial angle for the astigmatism of the right observation optical system are determined based on the inputted fitting angle. Variable cross cylinder lens rotating drive units are controlled to rotate cylinder lenses of each of the right and left observation optical systems, thereby obtaining the determined axial angle and the determined amount of correction.