US 11,686,996 B2
Light source apparatus and image projection apparatus
Makoto Nomoto, Saitama (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 7, 2021, as Appl. No. 17/368,975.
Claims priority of application No. JP2020-122866 (JP), filed on Jul. 17, 2020.
Prior Publication US 2022/0019136 A1, Jan. 20, 2022
Int. Cl. G03B 21/16 (2006.01); G03B 21/20 (2006.01); F21V 29/60 (2015.01)
CPC G03B 21/16 (2013.01) [F21V 29/60 (2015.01); G03B 21/204 (2013.01); G03B 21/2013 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A light source apparatus comprising:
a light source;
a first heat radiation unit configured to radiate heat from the light source;
a wavelength conversion element configured to convert the light from the light source into light with a different wavelength; and
a second heat radiation unit configured to radiate heat from the wavelength conversion element,
wherein the light source and the wavelength conversion element are disposed opposite to each other,
wherein a flowing direction of first cooling air flowing through the first heat radiation unit and a flowing direction of second cooling air flowing through the second heat radiation unit are same direction to each other, and
wherein a flow of the first cooling air is generated by a fan different from a fan that generates a flow of the second cooling air.