Service manual

CHAPTER 2
2 - 6
COPYRIGHT  2002 CANON INC. CANOSCAN 8000F REV.0 OCT. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
II. OPTICAL SYSTEM
A. Outline
The optical system consists of the scanning lamp, lens and mirrors. When scanning a
reflective document, the scanning lamp in the scanning unit exposes the document and
focuses the reflected light from the document on the light-sensitive device CCD (charge-coupled
device) via the lens and mirrors.
When scanning a film, FAU lamp in the Film Adapter Unit transmits the film and focuses the
transmitted light on the CCD.
When using FARE function, infrared LED transmits a film after FAU lamp does, and FARE
unit operates to scan the film.
Figure 2-5
CCD
FARE Unit
Lens
Scanning Lamp