US 12,352,426 B2
Light source device
Norimasa Yoshida, Komatsushima (JP); and Tsuyoshi Okahisa, Tokushima (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Oct. 19, 2023, as Appl. No. 18/490,549.
Application 18/490,549 is a continuation of application No. 17/731,945, filed on Apr. 28, 2022, granted, now 11,867,390.
Application 17/731,945 is a continuation of application No. PCT/JP2020/034187, filed on Sep. 9, 2020.
Claims priority of application No. 2019-197985 (JP), filed on Oct. 30, 2019.
Prior Publication US 2024/0044473 A1, Feb. 8, 2024
Int. Cl. F21V 5/04 (2006.01); F21V 5/00 (2018.01)
CPC F21V 5/045 (2013.01) [F21V 5/008 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A light source device comprising:
a plurality of independently operable light emitting devices; and
a first lens having a lower face that faces the light emitting devices, and an upper face opposite the lower face; wherein:
the lower face of the first lens comprises:
an entrance part located in a center of the lower face where light from the light emitting devices enters, the entrance part comprising a convex protrusion protruding towards the light emitting devices, wherein, in a top plan view, the convex protrusion overlaps multiple ones of the light emitting devices, and
a light guide part located outward of the entrance part and configured to guide the light entering the entrance part;
the upper face of the first lens comprises a plurality of annular protruding portions; and
in the top plan view, at least an outermost one of the plurality of annular protruding portions encompasses a bottommost portion of the light guide part.