Title:
ELECTRONIC FLUSH SUNGLASS OF SINE WAVE OUTPUT
Document Type and Number:
Japanese Patent JP2022075551
Kind Code:
A
Abstract:
To suppress frequency component that induces unnecessary brain wave and ensure safety of light stimulus by SSVEP (Steady State Visual Evoked Potentials) for treatment or prevention of neurologic disease due to an electronic flush sunglass.SOLUTION: A voltage level of three or more stages is provided in an absolute value drive voltage of a liquid crystal shutter element to control transmittance with a target value of substantially sine wave including intermediate gradations. In a case where an applied voltage is an AC voltage, a frequency F2 in which a drive voltage of an absolute value is inverted in polarity is set to be higher than a basic frequency F1 specified by a target value by induction upper limit frequency (100 Hz, for example) or more.SELECTED DRAWING: Figure 1
Inventors:
MATSUDA TOMOO
Application Number:
JP2021174199A
Publication Date:
May 18, 2022
Filing Date:
October 25, 2021
Export Citation:
Assignee:
MATSUDA TOMOO
International Classes:
A61N5/06; G02F1/13; G02F1/133
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