Lighting device
AssigneeLG Innotek Co., Ltd.
InventorsDong Hyun Lee, Dong Mug Seong, Jun Phill Eom, Beom Sun Hong
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Abstract
Disclosed is a light device comprising: a diffusion unit for diffusing and radiating light incident from a light source; and a condensing unit installed on a light radiating surface of the diffusion unit, including a micro lens array of lenses having sag determined depending on one of a light emitting area of the lighting device and total light flux of the lighting device. Thus, the lighting device can reduce a light flux emitted at the angle between 65 deg and 90 deg, thereby meeting UGR conditions.
Claims19
A lighting device, comprising:
- a light source unit;
- a diffusion unit for diffusing light emitted from the light source unit;
- and
- a condensing unit including a microlens array on a light emitting surface of the diffusion unit;
- wherein the microlens array includes a plurality of lenses having a sag determined based on any one of a light emitting area and a total luminous flux, and
- wherein the lenses of the plurality of lenses are spaced apart from each other.
A lighting device, comprising:
- a light source unit;
- a diffusion unit for diffusing light emitted from the light source unit;
- a condensing unit including a microlens array on a light emitting surface of the diffusion unit;
- and
- a light diffusion member between the diffusion unit and the condensing unit;
- wherein the microlens array includes a plurality of lenses having a sag determined based on any one of a light emitting area and a total luminous flux,
- wherein the diffusion unit and the condensing unit are bonded so as to form a spaced part, and
- wherein the light diffusion member has a bead structure.
A lighting device, comprising:
- a light source unit;
- a diffusion unit for diffusing light emitted from the light source unit;
- and
- a condensing unit on a light emitting surface of the diffusion unit;
- wherein the condensing unit includes a first concave part on a first surface facing the light emitting surface of the diffusion unit,
- wherein the condensing unit includes a plurality of lenses on a second surface opposite to the first surface, and
- wherein the plurality of lenses has a sag determined based on any one of a light emitting area and a total luminous flux.
Dependencies are inferred from the claim text.