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R5906848 /04
DP2K SLP Series
200
17.1 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 17-1: 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 DP2K SLP Series
Page 1: ...ENABLING BRIGHT OUTCOMES Service Manual DP2K SLP Series ...
Page 4: ......
Page 10: ...R5906848 04 DP2K SLP Series 10 ...
Page 14: ...R5906848 04 DP2K SLP Series 14 Safety ...
Page 24: ...R5906848 04 DP2K SLP Series 24 General ...
Page 30: ...R5906848 04 DP2K SLP Series 30 Preventative maintenance actions ...
Page 38: ...R5906848 04 DP2K SLP Series 38 Mains Input ...
Page 90: ...R5906848 04 DP2K SLP Series 90 Laser Phosphor Light Source ...
Page 94: ...R5906848 04 DP2K SLP Series 94 10 Reinstall all covers Liquid cooling circuit ...
Page 138: ...R5906848 04 DP2K SLP Series 138 Light Pipe ...
Page 147: ...147 R5906848 04 DP2K SLP Series Optical alignment 12 ...
Page 150: ...R5906848 04 DP2K SLP Series 150 Optical alignment ...
Page 248: ...R5906848 04 DP2K SLP Series 248 Card Cage ...
Page 263: ...263 R5906848 04 DP2K SLP Series Exhaust system 20 ...
Page 265: ...265 R5906848 04 DP2K SLP Series Board Diagnostic LED s 21 ...
Page 270: ...R5906848 04 DP2K SLP Series 270 Board Diagnostic LED s ...
Page 290: ...R5906848 04 DP2K SLP Series 290 Dust Filters ...
Page 294: ...R5906848 04 DP2K SLP Series 294 Troubleshooting ...
Page 382: ...R5906848 04 DP2K SLP Series 382 Troubleshooting ...
Page 394: ...R5906848 04 DP2K SLP Series 394 Projector cleaning ...
Page 395: ...395 Overview Hazards R5906848 04 DP2K SLP Series Appendix A ...
Page 409: ...R5906848 04 DP2K SLP Series 409 ...