Patent ID: 7667766

Claim:
An image acquisition system, comprising: a light emitting system, comprising: a plurality of red light emitters; a plurality of green light emitters; and a plurality of blue light emitters; a driver system, comprising: a first set of drivers configured to provide a first set of drive signals for driving each of the plurality of red light emitters; a second set of drivers configured to provide a second set of drive signals for driving each of the plurality of green light emitters; and a third set of drivers configured to provide a third set of drive signals for driving each of the plurality of blue light emitters; a first manual control operable by a user of the image acquisition system to control the driver system for varying an amplitude of at least one of the first, second or third set of drive signals thereby adjusting the spectral content of light emitted by the light emitting system; and a second manual control operable by the user to control the driver system for varying the intensity of light emitted by the light emitting system without varying the spectral content.