Angled Protective Lens Eliminates Laser Reflections
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Solution Overview
Problem
Laser module systems with traditional lenses suffer from extraneous light reflections, which can lead to unwanted illuminations on surfaces being illuminated, compromising the effectiveness and precision of the laser module's operation.
Innovation Solution
A lens with a smaller diameter portion offset at an angle relative to a larger diameter portion is used, designed to eliminate extraneous reflections by ensuring that any reflected light is directed outside the laser module's aperture, thereby preventing secondary reflections and unwanted illuminations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional lens is used to protect the laser module, then the laser module is protected from external conditions, but extraneous reflections are produced on the illuminated surface
Solution Approach 1:
The patent applies asymmetry by offsetting the smaller diameter portion of the lens at an angle relative to the larger diameter portion. This asymmetric configuration ensures that reflected light is directed outside the laser module's aperture, eliminating extraneous reflections while maintaining protection functionality
Solution Approach 2:
The patent converts the harmful reflection effect into a beneficial outcome by strategically angling the lens portions. The reflection is not eliminated but redirected away from the illuminated surface, transforming a harmful factor into a controlled directional output that prevents unwanted illuminations
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 angled lens configuration effectively eliminates extraneous reflections, ensuring focused illumination without secondary light beams, enhancing the operational precision and reliability of the laser module system.
Implementation Method 1
the smaller diameter portion is offset by an angle with respect to the larger diameter portion with the angle of offset being configured to eliminate extraneous reflections of light from the laser module
Data Source
AI summary
Protective lens for a laser module as well as systems that incorporate the lens. In one embodiment, a laser module system is disclosed. The laser module system includes a light-emitting diode lighting apparatus, a laser module that includes a laser-emitting aperture having a first dimension, and a protective lens that is disposed over the light-emitting diode lighting apparatus and the laser module. The protective lens includes both a smaller diameter portion that is configured to protect the laser module and a larger diameter portion that is larger in size than the smaller diameter portion and is configured to protect the light-emitting diode lighting apparatus. The smaller diameter portion is offset by an angle with respect to the larger diameter portion with the angle of offset being configured to eliminate extraneous reflections of light from the laser-emitting aperture of the laser module.