Patent ID: 8405699

Claim:
A light stabilizer used for an electronic device including a plurality of electronic parts and a main power source for supplying a drive current to the electronic parts, the light stabilizer comprises: a light source operably connected to the main power source; a heating power source operably connected to the light source, the heating power source operative to supply a heating current to the light source to make the light source self-heat in a non-light emitting state; and a control section operably connected to the main power source and the heating power source, the control section operative to execute control so that after the main power source is activated, the heating current is supplied to the light source to increase temperature of the light source equal to or higher than dew point temperature while the drive current is not supplied to the electronic parts, and, after the temperature of the light source is equal to or higher than the dew point temperature, the drive current is supplied to the electronic parts while the heating current continues to be supplied to the light source and, upon activating the electronic device, the heating power source is de-activated thus discontinuing supply of the heating current to the light source and the main power source supplies the drive current to the electronic parts and the light source, the drive current being supplied to the light source is sufficient to cause the light source to be heated to a light-emitting state.