Barrier structure of optical engine accommodating multiple light sources

A barrier structure of an optical engine, the barrier structure comprising:

• a first plane surface, comprising a first opening connecting to a first space below the first plane surface, wherein the first space is configured to accommodate a first light source;
• a second plane surface, comprising:
• a second opening, connecting to a second space below the second plane surface, wherein the second space is configured to accommodate a lens;
• and
• a third opening, connecting to a third space below the second plane surface, wherein the third space is configured to accommodate a second light source and an image sensor;
• and
• a wall, perpendicularly extending between the first space and the second space, and having a first protrusion structure transversely extending inside the first space.

A barrier structure of an optical engine, the barrier structure comprising:

• a first plane surface, comprising a first opening connecting to a first space below the first plane surface, wherein the first space is configured to accommodate a first light source;
• a second plane surface, lower than the first plane surface, and comprising a second opening connecting to a second space below the second plane surface, wherein the second space is configured to accommodate a lens;
• and
• a third plane surface, higher than the second plane surface, and comprising a third opening connecting to a third space below the third plane surface, wherein the third space is configured to accommodate a second light source and an image sensor.