Color difference meter module capable of performing real-time zero point adjustment and color measuring device using same
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United States of America Patent
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Sep 12, 2017
Grant Date -
Dec 29, 2016
app pub date -
Oct 13, 2014
filing date -
Mar 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A color measuring device includes a color difference meter module. The color difference meter module includes: a main detecting unit having an optical detecting unit configured to receive light introduced from an incident lens to generate a first current depending on a color, a first measuring unit configured to measure the first current, a sub-detecting unit having a dark detecting unit disposed adjacent to the main detecting unit and blocking the light to generate a second current in a dark state, a second measuring unit configured to measure the second current, a leakage measuring unit including a charging unit provided in the second measuring unit and charged with a predetermined set current, and measures a third current leaking from the charging unit, and a control unit that corrects the first current by reflecting the second current and the third current.
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