SPECIAL LENS FOR SPECTACLES AND SPECTACLES MOUNTED WITH SAID LENS

摘要

PURPOSE:To sharpen the video to the retina and to lessen fatigue by measuring the astimatism angle of the eyeball and mounting a polarizer having the specific angle with respect to the astigmatism angle to a lens for spectacles according to the degree of the astimatism angle. CONSTITUTION:The astimatism angle of the eyeball is measured and calculated and is divided to 0-90 deg. and 90-180 deg.. The polarizer (1) of the angle adding 90 deg. to the astimatism angle is mounted to the lens (2) in the cause of 0-90 deg.. The polarizer (1) decreasing 90 deg. from the astimatism angle is mounted to the lens (2) in the case of 90-180 deg.. Such polarizer (1) is adhered to the site of the lens (2) opposite from the eyeball or on the same side. The incidence of the irregular reflected light on the surface of the image on a cathode ray tube to the eye is prevented if the operator having the astigmatism wears such spectacles. The video to the retina is made sharper and the fatigue is prevented.