Výsledky vyhledávání - "Hisashi Asakawa"

Development of flying spot illumination system for stage lighting

Autor: Moriaki Wakaki, Hikari Koshiro, Katsunori Ishii, Junko Baba, Hisashi Asakawa

Publikováno v: Advances in Display Technologies IV.

The system to control the area of illumination is important for the luminaires used for stages and TV studios. Presently the methods to change the distance between a lamp and lenses, or to use a zooming projection of the aperture illuminated by the l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4213476f4a8ebb37c63a70612861487e
https://doi.org/10.1117/12.2038147

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Light-Controllable Spot Luminaires Using a Liquid Crystal Light Shutter and a High-Intensity Discharge Lamp

Autor: Takemi Tamura, Tsunehiro Hirabayashi, Takanori Fujii, Kensaku Takata, Kohji Hara, Hiroshi Kita, Kuniharu Takizawa, Yoshiaki Tanaka, Hideo Fujikake, Kenichi Hirakata, Hisashi Asakawa

Publikováno v: JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN. 83:534-542

New types of light-controllable luminaires using a metal halide lamp or a xenon lamp with a liquid crystal light shutter have been developed and demonstrated for spot or beam spot lighting of television program production. We fabricated a novel liqui

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e99252a93da966ec5184a9dbd80fdcde
https://doi.org/10.2150/jieij1980.83.8_534

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Development of luminaires using high power color LEDs and application to lighting system for color hologram

Autor: Moriaki Wakaki, Junko Baba, Hisashi Asakawa, Takehisa Shibuya

Publikováno v: SPIE Proceedings.

LEDs have been prevailing rapidly in the field of general lighting owing to the enhancement of output power and emission efficiency. We developed luminaires for general lighting using color LEDs. We also fabricated the lighting system for large size

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14a52d52b7d26a09032c094abf9c6c80
https://doi.org/10.1117/12.808478

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Liquid-crystal luminaire consisting of an optical shutter and a metal halide lamp

Autor: Hideo Fujikake, Kohji Hara, Hiroshi Kita, Yoshiaki Tanaka, Takanori Fujii, Kuniharu Takizawa, Tsunehiro Hirabayashi, Hisashi Asakawa, Satoshi Takano

Publikováno v: Scopus-Elsevier

We made a liquid-crystal (LC) luminaire for the first time to our knowledge by combining a metal halide lamp and an optical shutter composed of a compound of a very high nematic-isotropic point (172 degrees C) LC and a polymer (CLCP). The shutter can

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::505fcbb63fa56b966b9b90f5d77172a1
https://pubmed.ncbi.nlm.nih.gov/18319829

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Development of lighting system for hologram using high power LEDs

Autor: Junko Baba, Moriaki Wakaki, Hisashi Asakawa, Takehisa Shibuya, Asami Yaeda

Publikováno v: SPIE Proceedings.

Light emitting diode (LED) became popular rapidly by the appearance of blue LED. Three color (R, G, B) emitting LEDs are utilized for the image display system by the development of multi color emitting LED. White LEDs became to commercial base by com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6323979f76119342600cae908cae66b
https://doi.org/10.1117/12.698965

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Development of light distribution controllable luminaire using high-power LEDs

Autor: Asami Yaeda, Moriaki Wakaki, Hisashi Asakawa, Junko Baba

Publikováno v: Light-Emitting Diodes: Research, Manufacturing, and Applications XI.

The luminaires utilizing high power LED are prevailing for general use. In the application, multiple numbers of LED are required to attain the desired brightness. It is important to control the light distribution to combine the luminous flux from eac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c933e39684ba8ba6a2164f9c70cc62cb
https://doi.org/10.1117/12.698914

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