| CPC F21V 9/35 (2018.02) [F21V 5/04 (2013.01); F21V 7/06 (2013.01); F21V 9/45 (2018.02); F21V 29/502 (2015.01)] | 13 Claims |
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1. A photoconversion device, comprising:
a holder holding an output portion configured to output excitation light;
a wavelength converter including an incident surface section including a protruding surface to receive an excitation light from the output portion, the wavelength converter being configured to emit a fluorescence in response to the excitation light that is incident on the incident surface section;
an optical element including a reflector surrounding the wavelength converter, the reflector including a focal point surrounded by the incident surface section to direct the fluorescence emitted by the wavelength converter in a predetermined direction, the reflector being configured to reflect the fluorescence emitted by the wavelength converter;
a drive configured to change an illuminating area to receive the excitation light in the incident surface section, wherein
the incident surface section includes a plurality of phosphor areas including a first phosphor area and a second phosphor area,
the first phosphor area emits a first fluorescence with a first wavelength spectrum in response to the excitation light,
the second phosphor area emits a second fluorescence with a second wavelength spectrum different from the first wavelength spectrum in response to the excitation light,
the drive moves a part of at least one of the holder or the wavelength converter to change a relative positional relationship between the output portion and the plurality of phosphor areas,
the drive includes a mover configured to move the wavelength converter and the holder relative to each other in an intersecting direction intersecting with an optical axis of the excitation light, and
the plurality of phosphor areas is arranged in the intersecting direction in a plan view of the wavelength converter in a direction parallel to the optical axis.
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