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ENGLISH - 55
Basic Operation
Adjusting the lens mounter when the focus is unbalanced
Focus balance
z
Relationship between the tilt of the lens and the screen focus surface
When the projection lens is tilted in contrast with the image forming surface, tilting the front side (screen side)
of the projection lens downwards (in the direction of the dotted arrow line), the upper side of the screen focus
surface will tilt inwards and the lower side will tilt outwards.
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,PDJHIRUPLQJVXUIDFH
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Figure 1 A diagram showing the effect of lens tilting
How to adjust the focus balance (adjustment by tilting the lens mounter)
When the entire screen surface is not uniform even if the lens focus has been adjusted, the lens mounter has
focus adjustment screws in 3 locations.
z
Lens mounter structure
The lens mount bracket can be moved back and forth by turning focus adjustment screws (a), (b), and (c).
Also, tightening the xed screws locks the lens mount bracket in place so it does not move.
Lens mount bracket Fixing screws
(Focus adjustment screws (a), (b), and (c) are adjusted with the lens attached.)
Figure 2 Front view diagram of the lens mounter (as seen from the screen side)
55


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