Patent ID: 7597554

Claim:
A device for illumination of the oral cavity that comprises: light-emitting means to unilaterally or bilaterally illuminate the oral cavity; a pair of carrying members of light-emitting means to house and establish electric power supply to light-emitting means and keep them in fixed position; an illumination control system to supply electric power and to regulate an exit current that feeds the light-emitting means to unilaterally or bilaterally illuminate the oral cavity and to control the intensity of light emitted by each pair of the carrying members of the light-emitting means in an independent way, means to connect the carrying members of the light-emitting means to the illumination control system; and a feed source regulator of the electric power; wherein the control of the intensity of illumination of the light-emitting means is obtained by means of potentiometers, each potentiometer controls a pair of light-emitting means to increase the intensity of the light of both light-emitting means, or increase the intensity of light of one light-emitting means alone and/or diminish the intensity of the other one, and wherein the illumination control system also includes a control circuit that has a feed entry of 6 to 12 volts; a diode D 1 that protects the circuit against the polarity of the feed current; a resistor R 5 that reduces the feed voltage supply to a light-emitting diode that indicates that the circuit is receiving electricity; the feed voltage is forked to be supplied to transistors T 1 , T 2 , where each transistor regulates the entry voltage and reduces it to 5 volts; the reduced voltage is driven toward corresponding resistors R 2 , R 1 that reduces the voltage further from 5 volts to 3 volts to prevent heating of the light-emitting means connected to respective channels Ch 1 , Ch 2 ; the reduced voltage that leaves R 2 , R 1 is supplied to corresponding potentiometers POT 1 , POT 2 to regulate the exit voltage in each channel Ch 1 , Ch 2 , and in this way also regulates the intensity of the light of each light-emitting means of the illumination control circuit; and wherein the illumination control circuit also contains respective grounded resistors R 4 , R 3 to achieve the complete turning off of each light-emitting means connected to channels Ch 1 , Ch 2 , respectively; and diodes D 2 , D 3 that serve as protection against the polarity of each channel Ch 1 , Ch 2 .