LIGHT SOURCE DEVICE AND LIGHT PROJECTION DEVICE

WIPO Patent Application WO/2018/163885

A1

Provided is a light source device capable of controlling a light deflector appropriately and highly accurately in such a manner that the scanning speed of a laser light is relatively slower in a predetermined scanning range, even when a high-weight scanning means, such as a high-reflectivity mirror, is used as scanning means for scanning light with respect to a wavelength conversion member. Also provided is a light projection device equipped with this light source device. The light source device (2) comprises: a laser light source emitting a laser light; a wavelength conversion member (15) converting the wavelength of the laser light into another wavelength while diffusing the wavelength-converted laser light; and a light deflector (14) causing the laser light to perform a scan over the surface of incidence of the wavelength conversion member (15) at least in one dimension. The light deflector (14) comprises a coil, and a magnetic circuit applying a magnetic field to the coil. The magnetic circuit is configured such that the relative intensity of a magnetic field applied to a coil decreases as a movable part approaches a predetermined moving position.

MATSUMURA KAZUYUKI
ASO JUNYA
UENO HIROTAKA
MURAKAMI KIMIHIRO
KOGA TOSHIHIRO

PCT/JP2018/006974

September 13, 2018

February 26, 2018

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PANASONIC IP MAN CO LTD (JP)

F21S41/00; F21S2/00; F21S43/00; F21S45/00; F21V7/24; F21V7/26; F21V7/28; F21V7/30; F21V9/00; F21V14/04; G02B26/08; G02B26/10; F21W102/00; F21W103/00; F21W104/00; F21W105/00; F21Y115/30

JP2015184591A	2015-10-22
JPH02119564A	1990-05-07
JP2009109928A	2009-05-21

KAMATA Kenji et al. (JP)

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