Illumination module

An illumination module, comprising:

• a light source, configured to emit an illumination light beam;
• a reflective light valve, disposed on a path of the illumination light beam, and configured to form a plurality of pixels, wherein each pixel is adapted to be switched between a first state and a second state, the pixels in the first state among the pixels are configured to reflect the illumination light beam into an effective light beam, and the pixels in the second state among the pixels are configured to reflect the illumination light beam into a complementary light beam;
• a lens, disposed on a path of the effective light beam, and configured to project the effective light beam to an area to be illuminated;
• an image sensing module, disposed on a path of the complementary light beam from the reflective light valve, and configured to sense the complementary light beam and convert an image formed by the sensed complementary light beam into a sensing signal;
• and
• a controller, electrically connected to the reflective light valve and the image sensing module, wherein the controller is configured to provide an image signal to the reflective light valve to control a distribution of the first state and the second state of the pixels, and the controller is configured to determine whether the reflective light valve is operating normally by comparing the sensing signal and the image signal.