Invention Grant
- Patent Title: Zoom lens system
- Patent Title (中): 变焦镜头系统
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Application No.: US174594Application Date: 1998-10-19
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Publication No.: US6101044APublication Date: 2000-08-08
- Inventor: Yuichiro Ori , Shigeto Ohmori
- Applicant: Yuichiro Ori , Shigeto Ohmori
- Applicant Address: JPX Osaka
- Assignee: Minolta Co., Ltd.
- Current Assignee: Minolta Co., Ltd.
- Current Assignee Address: JPX Osaka
- Priority: JPX9-287072 19971020
- Main IPC: G02B13/18
- IPC: G02B13/18 ; G02B15/16 ; G02B15/177 ; G02B27/42 ; G02B15/14
Abstract:
A zoom lens system has, from the object side, a first lens unit having a negative optical power and including at least one diffractive optical surface and a second lens unit having a positive optical power and including at least one diffractive optical surface. A distance between the first and second lens units varies during zooming operation.
Public/Granted literature
- US5463366A Current limiting fuse and dropout fuseholder Public/Granted day:1995-10-31
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