Illumination control system

An illumination control system comprising:

• illumination amplifier means for controlling illumination in response to an electrical control signal;
• feedback means for generating an analog feedback signal in response to the illumination;
• ramp means for generating a ramp signal;
• and
• comparing means for comparing the ramp signal with the feedback signal and for generating the electrical control signal having a pulse width that is related to the amplitude of the analog feedback signal.

An illumination control system comprising:

• controlling means for controlling illumination in response to at least one control signal;
• feedback means for generating a feedback signal in response to the controlled illumination;
• command means for generating a command signal related to desired illumination and
• comparing means for comparing the command signal with the feedback signal, said comparing means including means for generating the control signal in response to the comparison.

An illumination control system comprising:

• illumination amplifier means for controlling illumination in response to an illumination control signal;
• illumination feedback means for generating a feedback signal in response to the controlled illumination;
• command means for generating a command signal related to a desired illumination characteristic;
• and
• means for generating the illumination control signal in response to the feedback signal and the command signal.

An illumination control system comprising:

• illumination generating means for generating controlled illumination in response to an illumination control signal;
• duty cycle means for generating the illumination control signal in response to an illumination sensor signal, said illumination control signal having a plurality of signal states, and said illumination control signal having an information content related to duration of each of said plurality of signal states;
• and
• an illumination sensor for generating the illumination sensor signal in response to the sensed illumination.

An illumination control system comprising:

• controlling means for controlling illumination in response to an illumination control signal, said controlling means having a transmissivity that is controllable in response to the illumination control signal for controlling the illumination;
• an illumination transducer for generating an illumination feedback signal in response to the controlled illumination;
• illumination command means for generating an illumination command signal related to a desired illumination;
• and
• means for generating the illumination control signal in response to the illumination feedback signal and the illumination command signal.

An illumination control system comprising:

• means for controlling transmission of illumination in response to a pulse modulated signal;
• pulse means for generating the pulse modulated signal in response to a feedback signal;
• and
• feedback means for generating the feedback signal in response to illumination transmitted by said transmission controlling means.

An illumination control system comprising:

• means for controlling reflection of illumination in response to a pulse modulated signal;
• pulse means for generating the pulse modulated signal in response to a feedback signal;
• and
• feedback means for generating the feedback signal in response to illumination reflected by said reflecting controlling means.

An illumination control system comprising:

• illumination control means for controlling illumination in response to a pulse modulated signal;
• pulse means for generating the pulse modulated signal in response to a feedback signal and a command signal;
• command means for generating the command signal being related to desired illumination;
• and
• feedback means for generating the feedback signal in response to the controlled illumination.