US 11,815,259 B2
Lighting device
Masafumi Okada, Tokyo (JP); and Nobuyuki Suzuki, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/897,331.
Claims priority of application No. 2021-143759 (JP), filed on Sep. 3, 2021.
Prior Publication US 2023/0076604 A1, Mar. 9, 2023
Int. Cl. F21V 7/06 (2006.01); G02F 1/29 (2006.01); F21Y 115/10 (2016.01)
CPC F21V 7/06 (2013.01) [G02F 1/29 (2013.01); F21Y 2115/10 (2016.08)] 7 Claims
OG exemplary drawing
 
1. A lighting device comprising:
a circular funnel shaped reflector including a first neck portion, a circular opening portion, a first reflecting surface, and a first optical axis,
a rectangle funnel shaped reflector including a second neck portion, a rectangle opening portion, a second reflecting surface, and a second optical axis,
provided a distance from the first neck portion to the circular opening portion along the first optical axis is h1, and a diameter of the circle is d1,
h1/d1 is two or larger,
provided a distance from the second neck portion to the rectangle opening portion along the second optical axis is h2, and a length of one side of the rectangle is d2,
h2/d2 is two or larger, and
the circular funnel shaped reflector and the rectangle funnel shaped reflector are disposed adjacently.