LOW-POWER CONSUMPTION AUTOMATIC PHOTOSENSITIVE SUNGLASSES

It is provided a pair of automatically photosensitive sunglasses with low power consumption, comprising a spectacle frame (10), two liquid crystal lenses (50) provided thereon, a power supply module (20), a photosensor (30), a microprocessor (40), and a high-frequency charging and discharging bootstrap circuit (1), wherein the microprocessor (40) comprises a low-frequency switching drive circuit (2) for switching to a low or a high driving voltage of the liquid crystal lenses (50). The photosensor 30 on the glasses triggers a switch by intelligently sensing the light change, and the lenses automatically become bright or dark accordingly, which is more convenient for users as it requires no manual operation. As the input power supply voltage is greatly increased by the high-frequency charging and discharging bootstrap circuit (1), simply a small and low voltage battery is enough to make it work. In addition, the frequency of the driving voltage of the liquid crystal lenses (50) is greatly reduced due to the low-frequency switching drive circuit 2, thereby an effectively reduced power consumption of the glasses as well as better power saving is achieved, and the life spans of the battery and the glasses is prolonged.