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2. General
Positioning the projector
FLOOR
SCREEN
SCREEN
PD
A
CD
SCREEN
SW
SW
SH
B
SH
B
CD
Image 2-5
On-Axis / Off-Axis projection
The position of the projector with reference to the screen may also be different depending on the installation. Basically the projector
can be positioned in On-Axis or Off-Axis configuration. On-Axis configuration means that the projector is positioned so as to have
the centre of the lens coinciding with the centre of the screen. Off-Axis projection is obtained by shifting the lens up, down, left or
right. Several parameters can be calculated determining the position in any installation.
Formula to calculate the distance CD for On-Axis projection:
CD = SH/2 + B - A
Shift range
The lens can be shifted with respect to the DMD (P) which result in a shifted image on the screen (Off-Axis). A 100% shift means that
the centre point of the projected image is shifted by half the screen size. In other words, the centre point of the projected image falls
together with the outline of the image in an On-Axis projection. Due to mechanical and optical limitations it’s recommended to keep
the shift values within the field of view (F) as illustrated below. Within these shift ranges the projector and lens perform excellently.
Configuring the projector outside these shift ranges will result in a slight decline of image quality.
R59770057 CLM HD8 16/07/2007
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Summary of Contents for CLM HD8 R9050130
Page 1: ...CLM HD8 User guide R9050130 R90501301 R59770057 00 16 07 2007...
Page 4: ......
Page 22: ...2 General 18 R59770057 CLM HD8 16 07 2007...
Page 34: ...3 Physical installation 30 R59770057 CLM HD8 16 07 2007...
Page 46: ...5 Connections 42 R59770057 CLM HD8 16 07 2007...
Page 58: ...6 Getting started 54 R59770057 CLM HD8 16 07 2007...
Page 92: ...9 Image menu 88 R59770057 CLM HD8 16 07 2007...
Page 154: ...15 Maintenance 150 R59770057 CLM HD8 16 07 2007...
Page 164: ...16 Servicing 160 R59770057 CLM HD8 16 07 2007...
Page 188: ...E Mounting optional Carry handle 184 R59770057 CLM HD8 16 07 2007...
Page 190: ...F Order info 186 R59770057 CLM HD8 16 07 2007...