Title:
LIGHT EMISSION DEVICE AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/021108
Kind Code:
A1
Abstract:
The present invention is provided with: a light source unit (3) that emits excitation light (101); a light deflection unit (140) that deflects the excitation light (101); a wavelength conversion unit (160) that is irradiated with the excitation light (101) deflected by the light deflection unit (140), converts the excitation light (101) into wavelength-converted light of a different wavelength, and emits said wavelength-converted light; and a light-condensing unit (10) that condenses the excitation light (101) on the wavelength conversion unit (160). The light-condensing unit (10) comprises: a first optical system (11) that is disposed between the light source unit (3) and the light deflection unit (140); and a second optical system (12) that is disposed between the light deflection unit (140) and the wavelength conversion unit (160). If an axis in a direction in which a beam parameter product of the excitation light (101) is at a minimum is referred to as the Ax axis, and an axis in a direction orthogonal to the Ax axis is referred to as the Ay axis, in a cross section orthogonal to the travel direction of the excitation light (101), the focal distance in the Ay axis direction in the second optical system (12) is shorter than the focal distance in the Ax axis direction.
Inventors:
MURAKAMI KIMIHIRO
Application Number:
PCT/JP2017/026081
Publication Date:
February 01, 2018
Filing Date:
July 19, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F21S2/00; F21V5/04; F21V7/04; F21V13/00; F21V14/04; F21V14/06; G02B5/20; G02B13/00; G02B13/18; G02B17/08; G02B19/00; H01S5/022; F21Y115/30
Foreign References:
| JP2016046072A | 2016-04-04 | |||
| JP2005285792A | 2005-10-13 | |||
| JP2013232390A | 2013-11-14 |
Other References:
See also references of EP 3492799A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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