Lens and light emitting module for surface illumination
DCFirst Claim
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1. A light emitting module, comprising:
- a circuit board;
light emitting elements disposed on the circuit board, each light emitting element comprising;
light emitting diode chips; and
a wavelength conversion layer coated on the light emitting diode chips; and
a lens disposed on the light emitting elements and configured to diffuse light emitted from the light emitting elements,wherein the lens comprises a concave part comprising a light incident surface and an upper surface through which the light incident on the lens is emitted,at least one of the light incident surface and the upper surface comprises sections disposed at least 15°
from a central axis and sequentially connected in a first direction,the sections comprise sequentially connected first, second, and third sections, andthicknesses of the first, second, and third sections are each at least 1 μ
m, and are less than the width of the light emitting element.
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Abstract
A light emitting module includes a circuit board, light emitting elements disposed on the circuit board, each light emitting element including light emitting diode chips and a wavelength conversion layer coated on the light emitting diode chips, and a lens disposed on the light emitting elements and configured to diffuse light emitted from the light emitting elements. The lens includes a concave part having a light incident surface and an upper surface through which the light incident on the lens is emitted, and at least one of the light incident surface and the upper surface includes sections disposed at least 15° from a central axis and sequentially connected in a first direction.
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19 Claims
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1. A light emitting module, comprising:
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a circuit board; light emitting elements disposed on the circuit board, each light emitting element comprising; light emitting diode chips; and a wavelength conversion layer coated on the light emitting diode chips; and a lens disposed on the light emitting elements and configured to diffuse light emitted from the light emitting elements, wherein the lens comprises a concave part comprising a light incident surface and an upper surface through which the light incident on the lens is emitted, at least one of the light incident surface and the upper surface comprises sections disposed at least 15°
from a central axis and sequentially connected in a first direction,the sections comprise sequentially connected first, second, and third sections, and thicknesses of the first, second, and third sections are each at least 1 μ
m, and are less than the width of the light emitting element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A lens configured to diffuse light emitted from light emitting elements, the lens comprising:
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a concave part defining a light incident surface; and an upper surface through which light incident on the lens is emitted, wherein at least one of the light incident surface and the upper surface comprises sections disposed at least 15°
from a central axis and sequentially connected in a first direction,the sections comprise sequentially connected first, second, and third sections, and thicknesses of the first, second, and third sections are each at least 1 μ
m and are less than the width of the light emitting element. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification