An endoscope comprises a FPC (flexible printed circuit) having a first side and a second side, where the FPC comprises a first head part, a body part, and tail part. At least one solder pad is on the first side of the first head part, and at least one solder pad is on the first side of the body part. The endoscope further comprises a camera module mounted on the first side of the body part and a first LED (light emitting diode). A first side of the first LED is mounted on the first side of the first head part and a second side of the first LED is mounted on a first side of the camera module, while the first head part is bent. The second side of the body part is mounted on an end of a flexible fiber, and the tail part of the FPC is bent to mount on the flexible fiber.