Lighting Device Lens Height Adjustment Mechanism
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Solution Overview
Problem
Existing methods for mounting secondary lenses on substrates in light emitting device packages either lack effective protection against external factors or suffer from optical performance issues due to deformation and require larger attachment areas, making precise arrangement and heat radiation inefficient.
Innovation Solution
A lighting device design featuring a light source module, a lens unit with an accommodating groove, a housing unit for protection, a supporting unit for stable coupling, and a height adjustment mechanism using screw threads and grooves to allow vertical movement and adjust the lens unit's height, enabling precise positioning and improved heat radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a secondary lens is attached directly to a substrate, then economic advantage is achieved, but protection function against external circumstances is defective
Solution Approach 1:
The patent divides the mounting structure into separate functional components: a substrate, a lens unit with its own housing, and a supporting unit. This segmentation allows the lens unit to be protected from external circumstances while maintaining economical manufacturing through modular assembly rather than direct attachment.
Solution Approach 2:
The patent introduces a supporting unit as an intermediary component between the substrate and the lens unit housing. This supporting unit provides both mechanical support and protection functions, resolving the contradiction by enabling protected mounting without requiring direct lens-to-substrate attachment.
2Device complexity
If a secondary lens is attached directly to a substrate, then attachment is simplified, but an attachment area wider than a diameter of the lens is required
Solution Approach 1:
The patent employs a nested structure where the lens unit is housed within a housing unit that fits onto the supporting unit. This nesting arrangement allows the lens to be mounted with minimal attachment area on the substrate, as the housing and supporting unit provide the necessary structural footprint rather than requiring a large direct attachment area.
3Reliability
If a pillar-shaped device is used to fix the secondary lens, then fixation is achieved, but deformation of the pillar-shaped device causes adverse effects on arrangement and optical performance
Solution Approach 1:
The patent separates the fixation function from the optical component by using a supporting unit with a coupling hole rather than a solid pillar-shaped device. This segmentation allows the supporting unit to provide stable fixation while the lens unit maintains its optical integrity without deformation, as the coupling hole design prevents mechanical stress on the lens.
Solution Approach 2:
The supporting unit acts as an intermediary that provides mechanical fixation through a coupling hole mechanism rather than directly deforming the lens or requiring the lens to bear fixation stresses. This intermediary approach maintains optical performance while achieving reliable fixation.
4Ease of manufacture
If injection molding is used to create the pillar structure, then fixation is achieved, but precise arrangement of the light emitting device package is not facilitated
Solution Approach 1:
The patent divides the mounting structure into separately manufacturable components (substrate, supporting unit, lens unit housing) that can be precisely assembled together. This segmentation facilitates precise arrangement of the light emitting device package, as each component can be manufactured and positioned with high precision rather than relying on injection molding of a complex integrated structure.
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 provides stable protection for the lens unit from external environments, enhances heat radiation efficiency, and allows for adjustable orientation angles, addressing the limitations of existing methods by ensuring precise arrangement and efficient heat dissipation.
Implementation Method 1
a screw thread formed along an outer side of a bottom of the housing unit and a screw groove formed along an inner circumferential surface of the coupling hole of the supporting unit, corresponding to the screw thread
Data Source
AI summary
A lighting device is provided. The lighting device includes: a light source module mounted on a substrate; a lens unit provided on the light source module and including an accommodating groove accommodating the light source module; a housing unit accommodating the lens unit therein to protect the lens unit from an outside; a supporting unit fixed to the substrate and including a coupling hole having the housing unit coupled thereto to thereby support the housing unit; and a height adjustment unit allowing the housing unit to be vertically-movably coupled to the supporting unit and adjusting a height of the lens unit such that the height of the lens unit is varied.