Backlight module including cicular and cylinder fresnel lenses
AssigneeHon Hai Precision Industry Co., Ltd.
InventorLI-YING WANG HE
Life of this patent
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Abstract
A backlight module includes a carrier plate, a plurality of light sources, a plurality of circular Fresnel lenses, and a plurality of cylinder Fresnel lenses. The circular Fresnel lenses are arranged in an array form on the carrier plate. The light sources correspond to the circular Fresnel lenses, and are located in a side away from the carrier plate. One cylinder Fresnel lens is set between every two adjacent circular Fresnel lenses. A length direction of each cylinder Fresnel lens is parallel to an extending direction of adjacent column of the circular Fresnel lens. The circular and cylinder Fresnel lenses are used to reflect a light incident into their surfaces, and to increase an emission angle of the reflected light.
Claims6
A backlight module, comprising:
- a carrier plate;
- a plurality of light sources;
- a plurality of circular Fresnel lenses, wherein the plurality of circular Fresnel lenses are arranged in an array form on the carrier plate;
- and
- a plurality of cylinder Fresnel lenses that are parallel to each other;
- wherein the plurality of light sources correspond with the plurality of circular Fresnel lenses, and are positioned in a side away from the carrier plate;
- one cylinder Fresnel lens is set between every two adjacent circular Fresnel lenses;
- a length direction of each cylinder Fresnel lens is parallel to an extending direction of adjacent column of the circular Fresnel lens;
- the plurality of circular and cylinder Fresnel lenses arranged to reflect light incident into surfaces of the plurality of circular and cylinder Fresnel lenses, and to increase an emission angle of the reflected light.
Dependencies are inferred from the claim text.