Glare protecting device utilizing both optical and non-optical detectors and method of controlling thereof

A glare protecting device comprising:

• a glare protecting plate of which optical transmittance is adjusted by a driving signal;
• a solar cell which generates a solar voltage when light is applied thereto;
• a voltage generator for being charged by said solar voltage and generating a reset voltage;
• an optical detector for generating a light detecting signal by detecting a change in said light;
• a non-optical detector for generating an electromagnetic wave detecting signal by detecting an electromagnetic wave;
• a controller shifting into an operating mode in response to said light detecting signal, for generating a starting control signal and a driving control signal for starting time and driving time, respectively, of said operating mode in response to said electromagnetic wave detecting signal and said light detecting signal;
• and
• a driving means for selectively generating a starting voltage in response to said starting control signal and a driving voltage in response to said driving control signal as said driving signal,
• said controller:
• being reset in response to said reset voltage from said voltage generator;
• generating said starting control signal in response to said light detecting signal when said driving control signal is disabled in said operating mode;
• enabling said driving control signal in response to said electromagnetic wave detecting signal or said light detecting signal after generating said starting control signal in said operating mode;
• shifting into and maintaining a stop mode until shifting into said operating mode.