Optical Lens with Concentric Pattern for LED Flash Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current light emitting diode (LED) flash systems for mobile devices lack an effective optical lens design that enhances light uniformity, adhesion reliability, and prevents foreign substances from entering, while also failing to adjust correlated color temperature effectively.
Innovation Solution
A light emitting module featuring an optical lens with a concentric circular pattern on its periphery, a light-transmitting first body, and an emitting part that protrudes from the lens, coupled with a light emitting device having LEDs of warm and cool white colors, and an improved adhesion area between the lens and the device, ensuring secure attachment and efficient light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional LED flash system without an optical lens is used, then the device complexity is reduced, but the light uniformity and optical reliability are insufficient
Solution Approach 1:
The optical lens is divided into distinct functional parts: a first body for light transmission, an incident part with concentric circular patterns for light reception and distribution, and an emitting part for light output. This segmentation allows each part to be optimized for its specific function, improving overall optical reliability while maintaining manageable complexity
Solution Approach 2:
The incident part features concentric circular patterns with curved surfaces that help distribute light uniformly across the emitting part. The circular geometry naturally directs light rays to achieve more uniform illumination, enhancing optical reliability through geometric optimization
2Reliability
If the optical lens structure is simplified, then the manufacturing precision requirements are reduced, but the adhesion reliability between lens and device deteriorates
Solution Approach 1:
The optical lens incorporates protrusion portions that extend in the vertical dimension beyond the main body. These protrusions fit into corresponding recesses in the device housing, creating mechanical interlocking that significantly improves adhesion reliability without requiring extremely precise manufacturing tolerances for the entire lens structure
3Productivity
If the optical lens is designed with a protruding emitting part, then the light emission efficiency is improved, but foreign substances may enter the structure
Solution Approach 1:
The optical lens design includes a configuration where the emitting part protrudes from the first body, creating a sealed optical path. The integrated structure acts as a protective barrier that prevents foreign substances from entering the internal cavity while maintaining efficient light emission through the protruding emitting surface
4Adaptability or versatility
If a single LED type is used, then the device complexity is reduced, but the correlated color temperature adjustment capability is lost
Solution Approach 1:
The optical lens is designed as a universal structure that can accommodate multiple LED types with different correlated color temperatures. The incident part's concentric circular pattern and the overall lens geometry are optimized to work with various LED configurations, allowing color temperature adjustment without requiring fundamentally different lens designs
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 enhances the optical reliability and light uniformity of the LED flash, prevents foreign substances from entering, and allows for adjustable correlated color temperature, improving the overall performance and reliability of the flash module.
Implementation Method 1
Light emitting devices, for example, light emitting diodes, are one type of semiconductor devices that convert electrical energy into light
Implementation Method 2
an optical lens includes a light-transmitting first body, an incident part including an incident surface... an emitting part protruding from an upper portion of the first body and configured to emit light incident from the incident part
Data Source
AI summary
Embodiments disclose an optical lens and a light emitting module having the same. The disclosed light emitting module includes: an optical lens including a light-transmitting first body, an incident part including an incident surface and a pattern on a periphery of the incident surface under the first body, and an emitting part protruding from an upper surface of the first body; a light emitting device having a second body having a cavity in which the incident part of the optical lens is disposed, a light emitting diode in the cavity, and a recess in which an outer lower surface of the first body faces a periphery of the cavity; and an adhesive for bonding the outer lower surface of the first body of the optical lens to the recess of the light emitting device, wherein a lower portion of the first body is disposed in the recess.