Sun glasses

Abstract

The invention discloses sun glasses, and is applied to the technical field of glasses. The sun glasses employ a light intensity detector to detect the change of external light intensity. A microprocessor calculates a duty ratio which is a specific value of time for allowing left liquid crystal eyeglass and right liquid crystal eyeglass to be open for transmitting light and time for allowing left liquid crystal eyeglass and right liquid crystal eyeglass to be closed for non-transmitting light, according to the detection results of the change of the external light intensity by the light intensity detector, provides or does not provide corresponding voltage to the left liquid crystal eyeglass and the right liquid crystal eyeglass simultaneously, and controls the left liquid crystal eyeglass and the right liquid crystal eyeglass to open or to close simultaneously. When the calculated duty ratio increases, the light transmittance of the left liquid crystal eyeglass and the right liquid crystal eyeglass is high, and the light transmittance of the sun glasses is high; otherwise, the light transmittance of the sun glasses is low; so that the light transmittance of the sun glasses changing with the external light intensity can be realized; the sun glasses capable of automatically adjusting the light transmittance according to the change of the external light intensity can be realized; and sense organ requirements of human eyes for different external lights can be satisfied.

Description

technical field [0001] The invention relates to the technical field of glasses, in particular to a pair of sunglasses. Background technique [0002] Sunglasses, also known as sunshade glasses, people usually rely on adjusting the pupil size to adjust the luminous flux in the sun. When the external light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye, so in outdoor activities, especially in summer People generally use sunglasses to block the sun to reduce the fatigue caused by eye adjustment or the damage caused by strong light stimulation. [0003] The sunshade function of sunglasses is all reflected on the lens, but the light transmittance of the lens of the existing sun glasses is fixed, resulting in the light transmittance of the existing sun glasses is fixed, that is, the light transmittance will not change with the outside world. The light intensity changes, and it is impossible to adjust the light transmittance adaptiv...

AI Technical Summary

Problems solved by technology

[0003] The sunshade function of sunglasses is all reflected on the lens, but the light transmittance of the lens of the existing sun glasses is fixed, resulting in the light transmittance of the existing sun glasses is fixed, that is, the light transmittance will not change with the outside world. The light intensity changes, it is impossible to adjust the light transmittance adaptively according to the change of the external light intensity, and it cannot meet the sensory requirements of the human eye for different external light

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