Patent ID: 11898709
Assignee: JAPAN DISPLAY INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A lighting device comprising a first unit and a second unit,
a first unit including:
a first funnel shaped reflector having a first neck, a first opening, a first reflecting surface and a first light axis,
a first LED emitting a first color being disposed on the first neck,
a first liquid crystal lens being disposed at the first opening,
a second unit including:
a second funnel shaped reflector having a second neck, a second opening, a second reflecting surface and a second light axis,
a second LED emitting a second color being disposed on the second neck,
a second liquid crystal lens being disposed at the second opening,
wherein a length h1 of the first funnel shaped reflector along the first light axis is same as a length of the second funnel shaped reflector along the second light axis,
a diameter d1 of the first opening of the first funnel shaped reflector is same as a diameter of the second opening of the second funnel shaped reflector,
h1/d1 is two or more,
a first collimated light from the first funnel shaped reflector enters the first liquid crystal lens, and
a second collimated light from the second funnel shaped reflector enters the second liquid crystal lens.