Multi-Laser Diodes Condenser/Homogenizer Applicable to Laser Projection Systems

Itoh, T.; Mizushima, Tetsuro; Furuya, Hiroyuki; Mizuuchi, Kiminori; Morikawa, Akihiro; Shikii, S.; Yamamoto, Kazuhisa; Kadowaki, Shin-ichi; Hiratsuka, Takashige; Takagi, Susumu; Mizoh, Yoshiaki

doi:10.1143/jjap.47.6794

jjap

2008

DOI: 10.1143/jjap.47.6794

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Multi-Laser Diodes Condenser/Homogenizer Applicable to Laser Projection Systems

T. Itoh

Tetsuro Mizushima

Hiroyuki Furuya

et al.

Abstract: PACS. 79.70 -Field emission and field ionization.Abstract. -We have observed ion emission from electrochemically etched tungsten tips at field strengths below the level of field ion microscopy. The tip potential-dependent emission curve is peaked at a field strength of about 2 V/nm. The temporal behaviour includes periodic outbursts of ions, the period being of the order of half an hour. Besides this, the system shows flickernoise at frequencies between and 0.1Hz.

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Cited by 3 publications

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Laser display technologies and their applications

Yamamoto

2012

Advanced Optical Technologies

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Laser displays have been attractive because extremely wide color expression can be realized by choosing the wavelength of laser sources. The high efficiency and small etendue of laser sources contribute to downsizing, and a long lifetime is also another merit for users. In this paper, laser display technologies using efficient red, green, and blue lasers are reviewed. Also, applications of laser displays using these laser display technologies are introduced.

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Laser display technologies and their applications

Yamamoto

2012

Advanced Optical Technologies

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Features of Laser TV and Development of Wavelength Conversion Green Laser

Hirano

Sakai

Sugiura

2010

The Review of Laser Engineering

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The fi rst laser TV named 'LaserVue', which has three primary colored lasers, has been newly developed. It provides an ultra wide color gamut with twice the range of colors as a conventional LCD-TV, a 65-inch wide screen with only 269 mm thickness, and a low power consumption of 135 W. A LD based extra-cavity SHG laser and a solid state laser based intra-cavity SHG laser has been developed, and the later is applied to the laser TV. The three essential planar-waveguide devices, which are suited to massproduction with wafer processing, of a pump LD, a solid state laser and a SHG are developed for the laser. To apply proximity coupling to these devices, we have miniaturized laser module with a volume as small as 10 cm 3 . This green laser provides an output power of 10 W with an electrical effi ciency of as high as 20 %. For practical use, a low temperature dependence of output power and a low temporal coherence of output light are also achieved.

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New Application of Visible Laser - Laser Lighting, Laser Display and Plant Factory -

Yamamoto

2013

The Review of Laser Engineering

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Laser displays with visible lasers are attractive because of their low electric power consumption and the wide range of colors that can be realized. Small etendue of laser sources are advantageous for downsizing display systems. Recently, because the reduction in costs of the visible laser can be attempted by the market expansion on laser displays, laser lighting applications have become also attractive. In this paper, technologies of laser displays and laser lightings using highly efficient visible lasers are reviewed. Also, their applications and future prospects are introduced.

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Multi-Laser Diodes Condenser/Homogenizer Applicable to Laser Projection Systems

Cited by 3 publications

References 8 publications

Laser display technologies and their applications

Laser display technologies and their applications

Features of Laser TV and Development of Wavelength Conversion Green Laser

New Application of Visible Laser - Laser Lighting, Laser Display and Plant Factory -

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