
Mechanical and Electrical
4
4.1.6 Projection Lens
The Projection Lens enlarges the image of the Microfilm and projects it onto the Screen or CCD.
Each Projection Lens comes in a unit. The Focus Ring and Zoom Ring of the Unit are used to bring the image on the Screen into focus and enlarge or reduce it, respectively.
The Prism Lens for image rotation is installed in the Prism Holder fixed to the machine.
The Projection Lens Unit is slid into position in the Lens Holder of the machine. To insert the Unit, raise the Prism Holder and, at the same time, push it into position.
When a Projection Lens Unit is installed, the Brightness Shift Lever must be moved as required according to each magnification.
Prism Unit
Prism Holder
Zoom Ring
Lens Holder
Focus Ring
Projection Lens Unit
41