Optics: image projectors – Prism in light path
Reexamination Certificate
2006-04-27
2009-06-30
Dowling, William C (Department: 2851)
Optics: image projectors
Prism in light path
C348S771000, C359S831000
Reexamination Certificate
active
07553032
ABSTRACT:
An imaging system for an optical engine of projection apparatus comprises a body, a prism device, a digital micromirror assembly, a projection lens assembly, and an illumination system. A first slide mechanism disposed between the prism device and the body enables the prism device and the body to move transversely, relative to each other, to form an adjustable distance between the projection lens assembly and the prism device. A second slide mechanism disposed between the digital micromirror assembly and the prism device enables the digital micromirror assembly and the prism device to move transversely, relative to each other, to form an adjustable relative position between an effective optical processing area of the digital micromirror assembly and the bottom of the prism device. Users or technicians may adjust the relative movement between the assemblies conveniently using the springs of a fastening device to fasten the prism device to the body. Likewise, the positioning devices of the fastening devices could be used to fasten the digital micromirror assembly and the body in position. Thus, the imaging system for the optical engine of the projection system can be precisely focused and positioned according to the aforementioned arrangement. Furthermore, not only is the operation and adjustment of the imaging system easy, quick, and inexpensive to perform, but also, the manufacture of parts is easy to manage and control.
REFERENCES:
patent: 6185047 (2001-02-01), Peterson et al.
patent: 2007/0108028 (2007-05-01), Lu
Delta Electronics , Inc.
Dowling William C
Patterson Thuente Skaar & Christensen P.A.
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