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R5906788-03
Thor series
112
11.1 Scheimpflug introduction
What is Scheimpflug?
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 occur 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 Scheimpflug'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 11-1: 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
The front plate of the Lens holder is equipped with four bronze (Scheimpflug) nuts and four set screws with
lock nut. These screws and nuts are used for Scheimpflug adjustment.
Summary of Contents for Thor Series
Page 1: ...ENABLING BRIGHT OUTCOMES Installation manual Thor series...
Page 2: ...Barco NV President Kennedypark 35 8500 Kortrijk Belgium www barco com en support www barco com...
Page 8: ...R5906788 03 Thor series 8...
Page 24: ...R5906788 03 Thor series 24 Safety Information...
Page 26: ...R5906788 03 Thor series 26 Commander Web Commander System overview...
Page 44: ...R5906788 03 Thor series 44 Installation process...
Page 68: ...R5906788 03 Thor series 68 Lenses Lens selection...
Page 78: ...R5906788 03 Thor series 78 Installing a HDD into the ICMP ICMP...
Page 110: ...R5906788 03 Thor series 110 Starting up...
Page 122: ...R5906788 03 Thor series 122 Scheimpflug...
Page 130: ...R5906788 03 Thor series 130 Convergence...
Page 142: ...R5906788 03 Thor series 142 Preventative maintenance actions...
Page 160: ...R5906788 03 Thor series 160 Specifications...
Page 168: ...R5906788 03 Thor series 168 Pin configurations...
Page 172: ...R5906788 03 Thor series 172 Environmental information...
Page 176: ...Glossary R5906788 03 Thor series 176...
Page 181: ...R5906788 03 Thor series 181...
Page 182: ...Barco NV President Kennedypark 35 8500 Kortrijk Belgium www barco com R5906788 03 07 09 2018...