Sealed Lens-Phosphor Package for Simpler Light Emission Control
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Solution Overview
Problem
Existing light emitting devices with external lenses for wavelength control have complex housing structures, necessitating a simpler package structure for improved design efficiency.
Innovation Solution
A light emitting device comprising a base, a light emitting element, a wavelength conversion member, and a lens member, where the lens is bonded to the wavelength conversion member within a sealed frame, simplifying the package structure while maintaining effective light control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a lens is disposed on the outside of the housing to control wavelength converted light, then light control function is achieved, but the housing structure becomes complex
Solution Approach 1:
The patent merges the lens with the housing structure by providing a lens portion that is integrally formed with the housing. This integration eliminates the need for separate external lenses while maintaining the light control function, thereby simplifying the overall housing structure and reducing component count.
Solution Approach 2:
The housing is designed to serve multiple functions: it provides structural support, encloses the light emitting elements, and simultaneously acts as a lens through its integrated lens portion. This multi-functionality reduces the need for additional dedicated light control components, simplifying the overall device structure.
2Stability of the object's composition
If multiple components are sealed in a frame, then structural integrity is enhanced, but manufacturing complexity increases
Solution Approach 1:
The housing is divided into distinct functional portions including a main body and an integrated lens portion. This segmentation allows for specialized manufacturing of each portion while maintaining overall structural integrity when assembled, balancing manufacturing ease with structural stability.
Solution Approach 2:
The lens portion is integrally formed with the housing, eliminating the need for separate assembly steps for attaching external lenses. This merging of components simplifies the manufacturing process while ensuring strong structural integrity between the lens and housing.
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 solution enables a more compact and simplified light emitting device design with effective light control, reducing the risk of light leakage and enhancing structural integrity.
Implementation Method 1
a wavelength conversion member 140... configured such that laser light emitted from the semiconductor laser is incident on a ceramic phosphor part and is converted to a different wavelength conversion
Implementation Method 2
The light emission surface is different from the incident surface. The lens member is bonded to the wavelength conversion member
Data Source
AI summary
A light emitting device includes a base, a light emitting element, a wavelength conversion member, a lens member, and a frame part. The light emitting element is disposed on an upper surface of the base and configured to emit light. The wavelength conversion member is disposed on the upper surface of the base. The wavelength conversion member has an incident surface on which the light is to be incident, and a light emission surface through which the light is extracted out of the wavelength conversion member. The light emission surface is different from the incident surface. The lens member is bonded to the wavelength conversion member on a light emission surface side of the wavelength conversion member. The frame part is connected to the base and forms a sealed space in which the light emitting element, the wavelength conversion member, and the lens member are sealed.