Illumination control system

An illumination system according to any preceding claim, wherein said system further comprises a monitor for monitoring at least one environmental condition and said microprocessor is adapted to control said pulse amplitude modulated voltage controlled current circuit in response to the monitored condition.

A light emitting diode illumination system arranged to drive one or more light emitting diode light sources which comprises a control system including a microprocessor arranged to control a pulse amplitude modulated (PAM) voltage controlled current circuit, and a current feedback means for monitoring current driving the light source(s), wherein the pulse amplitude modulated voltage control current circuit comprises means for providing a voltage for modulating pulse amplitude, and wherein said means for providing a voltage comprises a programmable digital potentiometer that is provided as voltage provider.

A light emitting diode illumination system arranged to drive one or more light emitting diode light sources which comprises a control system including a microprocessor arranged to control a pulse amplitude modulated (PAM) voltage controlled current circuit, and a current feedback means for monitoring current driving the light source(s), wherein the system further comprises means for receiving an external signal and for controlling the frequency and duty cycle of the pulse amplitude modulation control signal synchronism with the external signal, and wherein a solid state camera system is arranged to pass the external signal.

A light emitting diode illumination system arranged to drive one or more light diode light sources which comprises a control system including a microprocessor arranged to control a pulse amplitude modulated (PAM) voltage controlled current circuit, and means for modifying and controlling the pulse amplitude modulation signal timing period and duty cycle.

A light emitting diode illumination system arranged to drive one or more light emitting diode light sources which comprises a control system including a microprocessor arranged to control a pulse amplitude modulated (PAM) voltage controlled current circuit, wherein the pulse amplitude modulated voltage control current circuit comprises means for providing a voltage for modulating pulse amplitude, and a programmable digital potentiometer is provided as voltage divider.

A light emitting diode illumination system arranged to drive one or more light emitting diode light sources which comprises a control system including a microprocessor arranged to control a pulse amplitude modulated (PAM) voltage controlled current circuit, and the pulse amplitude modulated voltage control current circuit comprises a communications module providing a data connection interface to an internal or external controlling device.

A light emitting illumination system arranged to drive one or more light emitting diode sources which comprises a control system including a microprocessor arranged to control a pulse amplitude modulated (PAM) voltage controlled current circuit, and said system further comprises means for receiving an external signal and for controlling the frequency and duty cycle of the pulse amplitude modulation control signal in synchronism with the external signal.

A light emitting diode illumination system arranged to drive one or more light emitting diode light sources which comprises a control system including a microprocessor arranged to control a pulse amplitude (PAM) voltage controlled current circuit, the control system being constituted as a closed-loop illumination control system.