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. 28, 1993
Filed:
Apr. 06, 1992
Nobuyuki Taniguchi, Tondabayashi, JP;
Takeshi Egawa, Sennan, JP;
Tohru Matsui, Sakai, JP;
Takanobu Omaki, Sennan, JP;
Norio Ishikawa, Osaka, JP;
Akiyoshi Nakamura, Sakai, JP;
Shuzo Matsushita, Ikeda, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An auto-focusing system includes a focus condition detector which detects focus condition based on the infrared light. A data producer is provided for producing a deflection signal indicating a difference between an image forming distance for the infrared light and that for the visible light, due to aberration. In accordance with the detected focus condition and deflection signal, an objective lens is shifted to a position for properly focusing an image of visible light on an image forming plane.