Optical assembly and optical system

An optical assembly comprising:

• a plurality of light sources that, in operation, emit a plurality of light beams, the plurality of light beams having a plurality of wavelengths;
• at least one fiber combiner arranged on an optical path of the plurality of light beams to combine the plurality of light beams into a combined beam, the at least one fiber combiner having a first end and a second end, wherein the plurality of light beams enter the at least one fiber combiner at the first end and the combined beam exits the at least one fiber combiner at the second end;
• at least one optical homogenizer for producing a homogenous intensity profile of the combined beam, the at least one optical homogenizer having a third end and a fourth end, wherein the combined beam having a non-homogenous intensity profile is received from the at least one fiber combiner at the third end and the combined beam having the homogeneous intensity profile exits the at least one optical homogenizer at the fourth end;
• at least one first optical element and at least one second optical element arranged on an optical path of the combined beam, between the at least one optical homogenizer and at least one light guide, wherein the at least one first optical element and the at least one second optical element collectively steer the combined beam towards the at least one light guide, and wherein when the optical assembly is in use, the at least one second optical element is adjustable to steer the combined beam;
• at least one first actuator coupled to the at least one first optical element;
• and
• a controller communicably coupled to the at least one first actuator, the controller being configured to generate a first signal for controlling the at least one first actuator to adjust the at least one first optical element in a manner that the combined beam is steered by the at least one first optical element whilst also causing vibration of the at least one first optical element at a randomized pattern.