Polygonal scanners for TV and HDTV laser projectors: spatial and temporal tolerances versus resolution

Marshall, Gerald F.; Rynkowski, Gerald A.; Ketabchi, Mehrdad

doi:10.1117/12.164719

Cited by 1 publication

(1 citation statement)

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“…Vertical and horizontal movement of the laser beam is achieved by a two-mirror system in which a very fast polygon mirror scans the horizontal axis while the other mirror slowly scans the vertical axis. The polygon mirror scanner systems were extensively discussed in the literature [142][143][144]. Developments in MEMS technology has led to the evolution of compact and silent two-axis MEMS scanners that can replace both mirrors mentioned earlier [145].…”

Section: B Displays With Two-axis Scanningmentioning

confidence: 99%

Laser-based displays: a review

2010

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After the invention of lasers, in the past 50 years progress made in laser-based display technology has been very promising, with commercial products awaiting release to the mass market. Compact laser systems, such as edge-emitting diodes, vertical-cavity surface-emitting lasers, and optically pumped semiconductor lasers, are suitable candidates for laser-based displays. Laser speckle is an important concern, as it degrades image quality. Typically, one or multiple speckle reduction techniques are employed in laser displays to reduce speckle contrast. Likewise, laser safety issues need to be carefully evaluated in designing laser displays under different usage scenarios. Laser beam shaping using refractive and diffractive components is an integral part of laser displays, and the requirements depend on the source specifications, modulation technique, and the scanning method being employed in the display. A variety of laser-based displays have been reported, and many products such as pico projectors and laser televisions are commercially available already.

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