56.4: <i>Invited Paper</i>: New‐Technology Light Sources for Projection Displays

Brennesholtz, Matthew S.

doi:10.1889/1.3069807

Cited by 13 publications

(10 citation statements)

References 17 publications

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“…The obtained results are summarized in Table 2. For an LCoS projector using a high-brightness LED lamp, the panel temperature is about 35°C due to thermal effect [16,17]. Therefore, all the data listed here are intended for 35°C operation.…”

Section: Materials Characterizationmentioning

confidence: 99%

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Submillisecond-response nematic liquid crystals for augmented reality displays

Chen

Gou

2016

Opt. Mater. Express

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We report a new nematic liquid crystal (LC) mixture with an ultra-low rotational viscosity (γ 1 = 53.4 mPas @ 35°C), relatively high birefringence (Δn ≈0.15), and moderate dielectric anisotropy (Δε = −2.80 @ 35°C). When employed in a liquid-crystal-on-silicon (LCoS) projector with RGB light-emitting diodes (LEDs), a sub-millisecond response time is obtained without the need for complicated overdrive circuitry. Such a fast response time enables field sequential color display, which not only triples the optical efficiency and resolution density, but also greatly suppresses the image blur and color breakup. Moreover, the required cell gap is 1.2 µm, which is still manageable for high-yield manufacturing. We believe this mixture would find widespread applications for the emerging augmented reality displays.

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Section: Materials Characterizationmentioning

confidence: 99%

“…Therefore, all the data listed here are intended for 35°C operation. On the other hand, for an LCoS data projector using a high power arc lamp, the chassis temperature would be about 50°C~55°C [16,18]. Here, we focus on the LCoS display using an LED lamp for wearable AR displays.…”

Section: Materials Characterizationmentioning

confidence: 99%

Submillisecond-response nematic liquid crystals for augmented reality displays

Chen

Gou

2016

Opt. Mater. Express

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“…Most projection systems use high intensity discharge lamps (HID) [1] to provide illumination for the images. Virtually all mainstream projectors today use HID lamps with either xenon or mercury fill.…”

Section: Solid-state Illumination For Projection Systemsmentioning

confidence: 99%

61.4: Wavelength Selection for Lasers and LEDs in Projection Systems

Brennesholtz¹

2012

Symp Digest of Tech Papers

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Red, green and blue lasers and LEDs are used increasingly as the light source for projection and other display systems. The choice of the correct red, green and blue wavelengths affects many properties of the projector, especially the power consumption and the colorimetry. This paper gives criteria for choosing the correct wavelengths based on both power and colorimetry considerations. / M. Brennesholtz • SID 2012 DIGESTISSN 0097-966X/12/4302-0834-$1.00

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“…Electronic projection displays have dated back to at least 1903 [1] and non-electronic projection pre-dates that by centuries. Projection systems have always used state-of-the-art light sources to make the brightest possible image on the screen [2]. In the 19 th century, that meant oil lamps.…”

Section: Introductionmentioning

confidence: 99%