Optical Housing Unit; Optical Path - Ricoh G157 Service Manual

6.4 OPTICAL HOUSING UNIT

6.4.1 OPTICAL PATH

[A]
[B]
[C]
[D]
[E]
The laser beam moves as follows:
1. The laser diode unit [D] emits the laser beam.
2. The cylinder lens [E] condenses the laser beam.
3. The polygon mirror [I] reflects the laser beam.
4. The F-θ Lens [G] focuses the laser beam on the first mirror.
5. The first mirror [B] reflects the laser beam.
6. The second mirror [H] reflects the laser beam.
7. The barrel toroidal lens [F] focuses the laser beam on the third mirror.
8. The third mirror [A] reflects the laser beam.
9. The fourth mirror [C] reflects the laser beam.
SM
OPTICAL HOUSING UNIT
G157D914.WMFF
6-15
[F]
[G]
[H]
[I]
G157