Variable magnification viewfinder device and method for changing luminance of displayed information
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United States of America Patent
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Mar 10, 2015
Grant Date -
Aug 14, 2014
app pub date -
Apr 18, 2014
filing date -
Oct 19, 2011
priority date (Note) -
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Abstract
In a variable magnification viewfinder device, information displayed on a liquid crystal panel and a viewfinder image are combined with each other through a prism. When a variable power lens is inserted in a viewfinder optical path, viewfinder magnification is changed. Based on the change in the viewfinder magnification, brightness of a backlight unit is changed and luminance of the information displayed on the liquid crystal panel is changed. In a viewfinder field of view, the information and the viewfinder image are displayed at substantially the same brightness.
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