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R5905754 /13
DPxK-32B
71
5.7 Scheimpflug adjustment
What has to be done ?
The lens holder has to be adjusted so that the
“
sharp focus plane
”
of the projected image falls together with
the plane of the screen (Fp1
→
Fp2). This is achieved by changing the distance between the DMD plane and
the lens plane (Lp1
→
Lp2). The closer the lens plane comes to the DMD plane the further the sharp focus
plane will be. It can sometimes happen that you won't be able to get a complete focused image on the screen
due to a tilt (or swing) of the lens plane with respect to the DMD plane. This is also known as Sheimpflug's law.
To solve this the lens plane must be placed parallel with the DMD plane. This can be achieved by turning the
lens holder to remove the tilt (or swing) between lens plane and DMD plane (Lp3
→
Lp4).
Image 5-22: Scheimpflug principle
Scheimpflug principle
The "plane of sharp focus" can be changed so that any plane can be brought into sharp focus.
When the DMD plane and lens plane are parallel, the plane of sharp focus will also be parallel to
these two planes. If, however, the lens plane is tilted with respect to the DMD plane, the plane of
sharp focus will also be tilted according to geometrical and optical properties. The DMD plane, the
principal lens plane and the sharp focus plane will intersect in a line below the projector for
downward lens tilt.
Scheimpflug adjustment points
4
1
2
3
d
D
c
C
A
a
B
b
Image 5-23: Scheimpflug adjustments
Indication on
drawing
Function
4
Locking nut
1, 2 and 3
Scheimpflug adjustment nuts
A, B, C and D
Set screws
a, b, c and d
lock nuts
Summary of Contents for DP K-32B Series
Page 1: ...ENABLING BRIGHT OUTCOMES User and Installation manual For DP2K 32B and DP4K 32B DPxK 32B ...
Page 8: ...R5905754 13 DPxK 32B 8 ...
Page 58: ...R5905754 13 DPxK 32B 58 Lamp Lamp House ...
Page 76: ...R5905754 13 DPxK 32B 76 Lenses lens holder ...
Page 94: ...R5905754 13 DPxK 32B 94 Input communication ...
Page 96: ...R5905754 13 DPxK 32B 96 Installing a HDD into the ICMP ICMP ...
Page 128: ...R5905754 13 DPxK 32B 128 Communicator Touch Panel ...
Page 154: ...R5905754 13 DPxK 32B 154 Maintenance ...
Page 162: ...R5905754 13 DPxK 32B 162 Convergence ...
Page 170: ...R5905754 13 DPxK 32B 170 Specifications ...
Page 188: ...Index R5905754 13 DPxK 32B 188 USB 3 0 101 User definition 10 Z Zoom 65 ...
Page 189: ...R5905754 13 DPxK 32B 189 ...
Page 190: ...Barco NV President Kennedypark 35 8500 Kortrijk Belgium www barco com R5905754 13 2018 11 12 ...