Optical package with components under-stacked

An optical package comprising:

• a light source module including a light source, a first component for driving the light source, and a light source board having a first side on which the light source is stacked and a second side on which the first component is under-stacked;
• a main board which supplies electricity to the light source board while separating the light source board upwardly through a conductor spacer, and in which a fourth component is disposed in a separation space formed between the main board and the light source board by the conductor spacer;
• and
• a sensor module including an optical sensor board disposed to be spaced apart from the main board through a non-conductor spacer, and a second component disposed in a separation space between the optical sensor board and the main board.