LED light guide design to enable installation of LED bar to LED reflector in a cooking appliance
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Solution Overview
Problem
Existing lighting systems for cooking cavities often lack effective guides for the installation of light guide rods, leading to difficulties in achieving proper optical coupling with reflective elements, which affects the uniformity and intensity of illumination.
Innovation Solution
A lighting system that includes a light guide rod and a reflective element optically coupled for illuminating a cooking cavity, with a guide for the light guide rod that is tapered and has hooks for secure insertion and alignment with the reflective element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lighting system is installed in a cooking appliance, then illumination of the cooking cavity is achieved, but proper optical coupling between the light guide rod and reflective element is difficult to achieve
Solution Approach 1:
The guide structure is pre-configured with a tapered inner surface that automatically guides the light guide rod into proper alignment with the reflective element during insertion. This preliminary guiding action ensures correct optical coupling is achieved simply by inserting the rod, eliminating complex alignment procedures and making installation straightforward while保证ing illumination quality
Solution Approach 2:
A dedicated guide structure serves as an intermediary component between the light guide rod and reflective element. The guide's tapered inner surface acts as a mediator that facilitates proper optical coupling by physically directing the light guide rod into the correct position relative to the reflective element, thereby resolving the installation difficulty without compromising illumination performance
2Manufacturing precision
If the guide inner surface is tapered to guide the light guide rod, then optical coupling precision is improved, but manufacturing complexity increases
Solution Approach 1:
The guide inner surface employs a tapered geometry where the diameter gradually changes from the insertion end to the distal end. This parameter change in the guide's dimensional profile creates a self-aligning mechanism that precisely positions the light guide rod relative to the reflective element, achieving high optical coupling precision through a relatively simple geometric modification rather than complex mechanical adjustments
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 described lighting system ensures efficient and uniform illumination of the cooking cavity by facilitating precise optical coupling between the light guide rod and the reflective element, thereby enhancing cooking visibility and safety.
Implementation Method 1
a reflective element optically coupled to the light guide rod for reflecting the illumination from the light guide rod toward the cooking cavity
Implementation Method 2
a reflective element optically coupled to the light guide rod for reflecting the illumination from the light guide rod toward the cooking cavity
Data Source
AI summary
A lighting system is provided for illuminating a cooking cavity in a cooking appliance. The lighting system includes a light guide rod configured to guide an illumination and a reflective element optically coupled to the light guide rod for reflecting the illumination from the light guide rod toward the cooking cavity. A guide for insertion of the light guide rod extends longitudinally between an insertion end and a reflective element connection end coupled to the reflective element. The guide defines an inner surface that is tapered, becoming narrower from the insertion end towards the reflective element connection end, for guiding the light guide rod during optical coupling with the reflective element.