Lighting Module Lens Side Protrusion Reduces Interference
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Solution Overview
Problem
Existing lighting modules face issues with light interference between optical lenses, leading to reduced brightness distribution and increased noise from hot spots, which affects the reliability and image quality of the lighting system.
Innovation Solution
A lighting module design where the side protruding parts of optical lenses protrude outward from the circuit board, with a transmittance lower than the second light output surface, and are arranged in a specific direction to minimize interference, allowing for controlled light emission and reduced distance between light emitting devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If optical lenses are arranged closely on the circuit board to reduce the number of light emitting devices, then device complexity is reduced, but light interference between lenses increases causing brightness distribution degradation and hot spot noise
Solution Approach 1:
The patent introduces a side protruding part that extends in the lateral direction (second axis) perpendicular to the arrangement direction of optical lenses. This dimensional extension creates spatial separation between adjacent lenses without increasing the footprint area, thereby reducing light interference while maintaining compact device layout.
Solution Approach 2:
The side protruding part acts as an intermediary structure between adjacent optical lenses. It provides physical separation and light blocking functionality, preventing direct light interference between lenses while allowing the lenses to remain closely spaced for compact device design.
2Use of energy by moving object
If the side protruding part has high transmittance to allow light emission, then light output efficiency is improved, but light interference between adjacent lenses increases
Solution Approach 1:
The optical lens structure exhibits spatially varying transmittance properties: the second light output surface has high transmittance for useful light emission, while the side protruding part has low transmittance to block lateral light interference. This local differentiation of optical properties resolves the contradiction between light output efficiency and interference prevention.
3Productivity
If optical lenses are arranged in a compact grid pattern to increase productivity, then manufacturing efficiency is improved, but light interference causes increased noise from hot spots
Solution Approach 1:
The side protruding part segments the continuous light field between adjacent optical lenses, creating distinct optical zones. This segmentation prevents light from one lens from interfering with adjacent lenses, eliminating hot spot noise while maintaining compact grid arrangement for high manufacturing efficiency.
4Object-generated harmful factors
If the side protruding part extends far outward to maximize light isolation, then light interference is reduced, but device area increases
Solution Approach 1:
Instead of extending the isolation structure in the planar direction (first axis) which would increase device area, the patent extends the side protruding part in the lateral direction (second axis). This dimensional change achieves light isolation effectiveness without increasing the footprint area, maintaining compact device design.
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
This design reduces light interference, improves brightness distribution, decreases noise from hot spots, and enhances the reliability of the lighting module by minimizing the number of light emitting devices required, thereby improving image quality and system reliability.
Implementation Method 1
an outer side surface of the side protruding part has a transmittance lower than that of the second light output surface
Implementation Method 2
a first light output surface upwardly emitting light incident through the incident surface; a second light output surface emitting the incident light in a lateral direction
Data Source
Figure 1~2
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AI summary
A lighting module includes a circuit board of which length in a direction of a first axis is longer than that in a direction of a second axis; a plurality of optical lenses arranged in the direction of the first axis on the circuit board; and at least one light emitting device respectively disposed between the circuit board and the plurality of optical lenses, wherein the optical lens includes: an incident surface disposed on the circuit board; a first light output surface upwardly emitting light incident through the incident surface; a second light output surface emitting the incident light in a lateral direction; and a side protruding part protruding outward from a first region of the second light output surface, wherein the side protruding part of each of the optical lenses protrudes outward of the circuit board.