Motion-detecting module with a built-in light source

A motion-detecting module with a built-in light source, comprising:

• a chip unit having a PCB (Printed Circuit Board), a light-emitting chip, and an image-sensing chip, wherein both the light-emitting chip and the image-sensing chip are electrically disposed on the PCB, respectively and the light-emitting chip generates beams;
• a cover unit covered on the image-sensing chip, wherein the cover unit has a first opening for exposing the image-sensing chip;
• and
• a light-guiding unit disposed on a bottom side of the cover unit, wherein the light-guiding unit has a reflective layer on an surface thereof to form a reflective surface for reflecting and condensing the beams that generate from the light-emitting chip to form first beams;
• Whereby, the first beams are reflected from the reflective surface of light-guiding unit to project onto an object surface and are reflected by the object surface to form second beams, and the second beams are reflected from the object surface to project onto the image-sensing chip.