System and/or method for reading, measuring and/or...

Details System and/or method for reading, measuring and/or... System and/or method for reading, measuring and/or...

2011-05-03

2011-05-03

Epps, Georgia Y (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S239000, C362S612000, C362S619000, C257S081000

Reexamination Certificate

active

07935916

ABSTRACT:
A system and/or a method reads, measures and/or controls intensity of light emitted from a light-emitting diode (LED). The system and/or the method have a light intensity detector adjacent to the LED for reading and/or measuring the intensity of light emitted from the LED. The system and/or the method have a control circuit that may be electrically connected to both the detector and/or the LED for measuring and/or for controlling an intensity of light emitted from the LED. A housing surrounds the light detector and/or the LED. The housing has a pathway that allows only light emitted from the LED to reach the light detector. The LED has a finish and/or a coating that eliminates and/or retards absorption of light by internal components of the LED. The finish and/or the coating eliminates and/or retards reflection of the light by the LED.

REFERENCES:
patent: 4777359 (1988-10-01), Havel
patent: 7157294 (2007-01-01), Uemura et al.

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