Invention Grant
- Patent Title: Auto-focus camera with adjustable lens movement pitch
- Patent Title (中): 自动对焦相机，可调节镜头移动间距
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Application No.: US11819099Application Date: 2007-06-25
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Publication No.: US07965334B2Publication Date: 2011-06-21
- Inventor: Toshimi Watanabe , Toshiaki Maeda , Tadashi Ohta
- Applicant: Toshimi Watanabe , Toshiaki Maeda , Tadashi Ohta
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2002-114831 20020417
- Main IPC: H04N5/232
- IPC: H04N5/232 ; G03B13/00
Abstract:
An auto-focus (AF) camera enables AF operation with high speed and enhanced accuracy. The AF operation encompasses step-scanning the focus lens of the camera from the closest focal position to infinity, or vice versa. In one embodiment, the steps in the step-scanning are made smaller around a position judged to be close to the focus position, and the steps are made larger at other positions.
Public/Granted literature
- US20070247542A1 Camera Public/Granted day:2007-10-25
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