Zoom lens apparatus
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United States of America Patent
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-
Nov 2, 2004
Grant Date -
Jan 15, 2004
app pub date -
Jul 7, 2003
filing date -
Jul 11, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In the zoom lens apparatus, a lens frame for a variable-magnification lens or a correcting lens is configured of an inner frame and an outer frame, and any focus blurring due to variations in wavelength of subject light can be compensated for accurately by shifting the inner frame holding the lens relative to the outer frame. The correcting lens frame for the correcting lens is configured of the inner frame and the outer frame, and the inner frame is shifted according to variations in wavelength of subject light. Any focus blurring can be thereby compensated for steplessly according to variations in wavelength of subject light.
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