D
D. Scott Dewald
Researcher at Texas Instruments
Publications - 9
Citations - 234
D. Scott Dewald is an academic researcher from Texas Instruments. The author has contributed to research in topics: Projection (set theory) & Aperture. The author has an hindex of 7, co-authored 9 publications receiving 234 citations.
Papers
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Patent
Illumination system for scrolling color recycling
TL;DR: Distortion optics are used to efficiently couple a spiral color wheel and an orthogonal modulator as discussed by the authors, where a light source enters an aperture in a reflective end of a recycling integrator rod 604.
Patent
Color correction filter for displays
TL;DR: In this paper, the primary color beams of light are selectively modulated by spatial light modulators ( 220, 222, 224 ) before passing through a projection lens ( 104 ) which focuses the beams of the light onto an image plane.
Patent
High contrast projection
TL;DR: An asymmetric aperture stop improves the contrast ratio of a projected image using slightly offset projection, where the majority of the on-state projection light from the modulator array passes through a region that is not centered in the projection lens pupil as discussed by the authors.
Journal ArticleDOI
40.2: Sequential Color Recapture and Dynamic Filtering: A Method of Scrolling Color
TL;DR: The authors present the techniques of dynamic filtering and sequential color recapture (SCR) to achieve the same result with no moving components other than a color wheel, showing that the efficiency of 3‐modulator systems can be approached with one modulator.
Journal ArticleDOI
Advances in contrast enhancement for DLP projection displays
TL;DR: An overview of the contrast performance of DLP projectors over time is presented as well as illumination and projection techniques that optimize the performance of the DMD.