Handheld vision tester and calibration thereof
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United States of America Patent
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May 24, 2016
Grant Date -
Aug 13, 2015
app pub date -
Apr 17, 2015
filing date -
May 9, 2009
priority date (Note) -
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Abstract
In one aspect, there is provided an embodiment of a calibration system for use with a vision tester having a display. In this particular embodiment, the calibration system comprises a calibration stand and a reflective surface. The calibration stand is configured to hold the vision tester. The reflective surface is coupled to the calibration stand and is oriented substantially parallel to the display. The calibration stand is configured to hold the display of the vision tester at a fixed distance from the reflective surface.
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