US 11,988,375 B2
Light source unit, light source module, and lighting device
Yohei Kawano, Tokushima (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Appl. No. 17/769,316
Filed by NICHIA CORPORATION, Anan (JP)
PCT Filed Oct. 6, 2020, PCT No. PCT/JP2020/037842
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2021/095399, PCT Pub. Date May 20, 2021.
Claims priority of application No. 2019-206387 (JP), filed on Nov. 14, 2019.
Prior Publication US 2024/0125456 A1, Apr. 18, 2024
Int. Cl. F21V 5/04 (2006.01); F21V 7/00 (2006.01); F21V 11/00 (2015.01); F21V 13/04 (2006.01); F21W 131/202 (2006.01); F21Y 113/13 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 5/043 (2013.01) [F21V 7/0033 (2013.01); F21V 11/00 (2013.01); F21V 13/04 (2013.01); F21W 2131/202 (2013.01); F21Y 2113/13 (2016.08); F21Y 2115/10 (2016.08)] 20 Claims
OG exemplary drawing
 
1. A light source unit, comprising:
a first light-emitting element and a second light-emitting element;
a rod lens including
a first end surface, light emitted from the first and second light-emitting elements being incident on the first end surface,
a second end surface positioned at a side opposite to the first end surface, and
a side surface positioned between the first end surface and the second end surface, a surface area of the second end surface being less than a surface area of the first end surface; and
a light-shielding body separated from the side surface,
the light-shielding body covering the side surface,
the light-shielding body including an opening that exposes at least a portion of the second end surface,
the light-shielding body including a tip that protrudes further than the second end surface in a first direction,
the first direction being from the first end surface toward the second end surface,
a first plane crossing the first direction and being positioned at a same position as the tip in the first direction,
a second plane crossing the first direction and being positioned at a same position as the second end surface in the first direction or between the tip and the second end surface, and
a first surface area of the opening at the first plane being greater than a second surface area of the opening at the second plane.