5-3 Verticality of the Optical Path (Advanced Adjustment)

Goal: Both dots on the lens holder and the laser beam outlet be on the center of the circle.

Directions:
1. Move the laser head to the center of the working area manually. Place a piece of tape on the metal ring in front of the third reflecting mirror.
2. Close the door and press "Laser Pulse".
3. Open the door and measure the distance between the center of the dot and the center of the ring. Let the distance be "X".

4. Release three nuts behind the third mirror. Rotate the three screws equally so the mirror can move forward or backward in a paralleled direction. Make the gap between the metal pieces be "X mm".

5. Release the lens holder ring by rotating it clockwise and lower the lens holder to the middle. Fasten the holder at the position by rotating the ring counter-clockwise.
6. Place a piece of tape on the beam outlet.
7. Refer to the steps of "Third Reflecting Mirror" and readjust the screws behind the third mirror so the dot is on the center of the circle.
8. Release and remove the whole lens holder. Place a piece of tape on the spot shown in the picture below. Apply pressure to make a circular mark on the tape.

9. Close the door and press "Laser Pulse". Open the door and check the dot on the tape. There are three possibilities for the location of the shot:

　　a. The shot is in the center of the circle.
　　　Indicating the optical path is already vertical and the adjustment is done.
　　b. The dot is on the right side of the circle.
　　　Indicating the optical path has an angle which comes from the top-right and exit to
　　　the bottom-left. Release each screw counter-clockwise half round to decrease the
　　　the gap distance between the metal pieces. Repeat steps 5 - 9.
　　c. The dot is on the left side of the circle.
　　　Indicating the optical path has an angle that comes from the top-left and exits to the bottom-right.
　　　Tighten each screw clockwise half round to increase the gap distance between the metal pieces.
　　　Repeat steps 5 - 9.

Please run the "Camera Calibration" again after the adjustment is done.