Optical module and electronic apparatus

An optical module for a colorimeter comprising:

• a base having a first window and a second window;
• a light source that is disposed in the base and radiates initial light through the second window onto a measurement position of a measurement target in a direction crossing a measurement optical axis;
• an incident optical system that is disposed in the base and receives reflected light, the reflected light being obtained by reflecting the initial light at the measurement position of the measurement target, the reflected light traveling along the measurement optical axis through the first window;
• a shutter having a shutter face facing the first window and the second window of the base;
• a shutter holder supporting the shutter, the shutter holder being configured to open or close the first window with the shutter;
• a reference object disposed on at least a part of the shutter face;
• and
• a light guide disposed between the base and the shutter face;
• wherein the first window and the second window face the shutter face of the shutter when the first window is closed with the shutter so that the light guide diffusively guides the initial light from the second window to the reference object.