Close-In Illumination Module

An optical system comprising:

• a camera, wherein the camera comprises an optical axis and an outer lens element disposed along the optical axis;
• an illumination module, wherein the illumination module comprises an at least one light-emitter device configured to emit light along an emission axis;
• and
• a controller comprising at least one processor and a memory, wherein the controller is configured to execute instructions stored in the memory so as to carry out operations, the operations comprising:
• operating the optical system in a first operating mode;
• receiving information indicative of an operating temperature of the optical system;
• determining that the operating temperature of the optical system is outside of a predetermined temperature range;
• and
• in response to determining that the operating temperature of the optical system is outside of the predetermined temperature range, operating the optical system in a second operating mode.