ENGLISH-9
Projection relationships (continued)
■
Dimensional relationship
For details on the projection distance (L), refer to “Projected image size and Projection
distance” and “Projection distance formulas” in the Appendix.
Note
z
For details on “Projected image size and Projection distance” for projector models other
than PT-REQ12 / PT-REQ10 / PT-REQ80, refer to “Setting up” in the operating instructions
of the projector.
Perform the lens position shift within the adjustment range.
Perform lens shift adjustment within the ranges shown in the following illustrations.
The focus may change when the lens position is shifted out of the adjustment range.
This is because the movement of the lens is restricted to protect the optical parts.
Projection position can be adjusted with the optical axis shift based on the home position
in the respective range.
ET-C1W400 / ET-C1W500 /
ET-C1S600 / ET-C1T700
0.6V
0.29H
0.29H
0.6V
Standard projection position
Projected image
height V
Projected image width H
Optical axis center
ET-C1W300
0.5V
0.23H
0.23H
0.5V
Standard projection position
Projected image
height V
Projected image width H
Optical axis center
Note
z
The home position of the projector is a point of origin position for the lens shift (i.e., vertical
and horizontal positions of the lens) based on the results of lens calibration. It is not the
optical center position of the screen.
Lens shift ranges
