Light-Emitting Package Optics for Uniform Color Emission
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Solution Overview
Problem
Conventional light emitting packages face limitations in achieving uniform color emission across their entire optic region due to differences in light color passing through the upper and side surfaces, primarily due to the structure of the phosphor layer surrounding the light emitting diode.
Innovation Solution
A light emitting package design incorporating a substrate with a circuit pattern, a first optic portion, a light controller, and a second optic portion, where the light controller reflects side-emitted light and the second optic portion secures the first optic portion, ensuring uniform light emission by utilizing a light controller to direct side-emitted light towards the upper surface and an optical characteristic converter to adjust light characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a phosphor layer surrounds the light emitting diode, then light emission is enhanced, but color uniformity across the optic region deteriorates
Solution Approach 1:
The patent divides the optic portion into multiple regions: a first optic portion directly receiving light from the LED, a light controller surrounding the first optic portion, and a second optic portion covering both. This segmentation allows different regions to perform specialized functions - the first optic portion for direct light transmission, the light controller for reflecting and redirecting side-emitted light, and the second optic portion for final light output, thereby achieving both high light emission and uniform color distribution.
Solution Approach 2:
The light controller acts as an intermediary component between the first optic portion and the second optic portion. It receives light from the first optic portion, reflects and redirects it toward the second optic portion, and ensures uniform color distribution. This intermediary structure resolves the contradiction by mediating the light path to achieve both intensity and uniformity.
2Productivity
If light is emitted from side surface of the first optic portion, then light output is increased, but color consistency deteriorates
Solution Approach 1:
The patent utilizes three-dimensional spatial arrangement by positioning the light controller to surround the first optic portion and redirect light from the side surface to the upper surface. This dimensional approach allows the system to capture light emitted in multiple directions and redirect it uniformly through the second optic portion, achieving both increased light output and color consistency.
Solution Approach 2:
The light controller is designed to reflect and redirect light while maintaining color consistency. By controlling the reflection and redirection of light from the side surface to the upper surface, the light controller ensures that the color characteristics remain uniform across the entire optic region, resolving the contradiction between increased light output and color consistency.
3Device complexity
If a conventional phosphor layer structure is used, then device complexity is reduced, but light intensity is insufficient
Solution Approach 1:
The patent segments the light guiding function into three distinct components: the first optic portion for direct light reception, the light controller for light redirection, and the second optic portion for final output. This segmentation increases light intensity by efficiently managing light paths while keeping each individual component relatively simple in structure.
Solution Approach 2:
The light controller serves multiple functions: it surrounds the first optic portion, reflects light from the side surface, redirects light toward the second optic portion, and ensures uniform color distribution. This multi-functionality increases light intensity without proportionally increasing device complexity, as one component performs multiple critical roles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances light intensity and achieves uniform color emission throughout the entire region of the light emitting package, effectively utilizing light from both the upper and side surfaces, thereby improving the overall light output and color consistency.
Implementation Method 1
The light controller may be formed to cover a side surface of the first optic portion, and may reflect light emitted from the side surface of the first optic portion
Implementation Method 2
The phosphor layer excites some of light emitted from the light emitting diode to emit light in different wavelength ranges
Data Source
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AI summary
The present disclosure relates to a light emitting package. According to an embodiment of the present disclosure, a light emitting package including a substrate on which an circuit pattern is formed, a first optic portion, a light controller, and a second optic portion is provided. The first optic portion may be arranged on the substrate to be electrically connected to the circuit pattern, and may generate and emit light. The light controller may be formed to cover a side surface of the first optic portion, and may reflect light emitted from the side surface of the first optic portion. In addition, the second optic portion may cover the first optic portion and the light controller, and may be secured on the light controller. Herein, the second optic portion may include a securing region secured on the substrate and a light emitting region disposed over the securing region. Light emitted from the first optic portion may be emitted to the outside of the second optic portion through the second optic portion.