Laser television display unit

Drozhzhin, Anton; Kosovskii, L. A.; Mikhailova, L. N.; Chamorovskii, K.

doi:10.1070/qe1975v005n10abeh012076

Cited by 1 publication

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“…Most compact laser projectors use this approach, but other modulator technologies such as AOMs or EOMs can also be used [147,148]. Earlier works in laser-based displays were mainly based on acousto-optic modulation [1,[149][150][151], using acousto-optic devices for both beam modulation and scanning was also discussed in the literature [147] introduction of a new class of projectors called pico projectors; these use directly modulatable diode lasers and two-axis MEMS scanners, which allow a large reduction in size. Figure 26 shows such a two-axis MEMS device developed by Microvision.…”

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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