| 摘要 |
PURPOSE:To eliminate the eye strain and to prevent visual acuity from failing by using a special frame for preventing light from being incident from above and below and a special frame for preventing light from being incident laterally. CONSTITUTION:Reinforcement is attained by lenses for the correction of astigmatism. Irregular reflection on the surface of V.D.T. needs to be eliminated so as to remove glare. For the purpose, polarizing films are used on the lenses. The incidence of light from above and below and in lateral directions needs to be eliminated so as to eliminate the reflection, and a suitable frame is designed. Then, the polarizing films are colored thinnly to 70-80% transmissivity larger than conventional one so as to adjust brightness. The opposite color from the color which is used most among colors of V.D.T. is used to complement the color, thereby eliminating a stimulus due to the chromatic aberration.
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