Adjustable Lens System for Portable LED Lighting
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Solution Overview
Problem
Existing portable lighting devices with LED light sources face challenges in varying luminous intensity distribution without complex constructional measures, such as parabolic or hyperbolic reflectors, especially when using multiple or different light sources, and require precise alignment of light sources with reflectors while maintaining electrical supply.
Innovation Solution
A lens system that is adjustable in distance relative to the LED light source, allowing for varying luminous intensity distribution without the need for complex reflectors or precise alignment, and enabling easy on/off switching and cooling, with a rotatable lighting device head for easy handling and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If parabolic or hyperbolic reflectors are used to vary luminous intensity distribution, then the luminous intensity distribution can be varied, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent extracts and removes the complex parabolic or hyperbolic reflector components from the lighting device, replacing them with a simpler lens system that achieves the same luminous intensity distribution variation without requiring complex constructional measures
Solution Approach 2:
The patent substitutes the mechanical reflector system with an optical lens system that achieves luminous intensity distribution variation through refractive properties rather than reflective geometry, simplifying the overall device structure
2Manufacturing precision
If parabolic or hyperbolic reflectors are used to achieve uniform luminous intensity distribution, then uniform distribution is obtained, but manufacturing precision requirements increase
Solution Approach 1:
The patent removes the difficult-to-manufacture parabolic or hyperbolic reflectors and replaces them with a lens system that is easier to manufacture while achieving the same uniform luminous intensity distribution
Solution Approach 2:
The patent changes the optical parameter approach from geometric reflection (requiring precise parabolic/hyperbolic shapes) to refractive lens parameters, which are easier to manufacture while achieving uniform luminous intensity distribution
3Manufacturing precision
If light source position is adjusted relative to reflector for accurate alignment, then proper light distribution is achieved, but the electrical supply connection becomes complicated
Solution Approach 1:
The patent extracts the alignment adjustment mechanism from the reflector system and transfers it to the lens system, which can be positioned independently without complicating the electrical supply connections to the light source
Solution Approach 2:
The patent segments the optical system into independent light source and lens components, allowing the lens to be adjusted for optimal light distribution while the light source remains fixed with simple electrical connections
4Adaptability or versatility
If multiple LED light sources are used to provide different beam characteristics, then versatility is improved, but the difficulty of alignment and adjustment increases
Solution Approach 1:
The patent creates a universal lens system that can work with multiple different LED light sources and beam characteristics without requiring individual alignment adjustments for each source, allowing one lens design to serve multiple functions
Solution Approach 2:
The patent uses adjustable lens parameters (position, orientation) that can be optimized for different LED light sources and beam characteristics, allowing versatility without increasing alignment complexity through a single adjustable lens mechanism
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 simplifies the design and operation of portable lighting devices by achieving uniform luminous intensity distribution with misaligned components, improving service life and usability, and allowing for different LED light sources and beam characteristics, while maintaining electrical supply and ensuring explosion-proof and easy assembly.
Implementation Method 1
a lens system (5) which is variable in its distance in relation to the light source (2), wherein depending on the positioning of the lens system (5) relative to the LED light source (2), the luminous intensity distribution of the outwardly emitted light is varied
Data Source
AI summary
A portable lighting device has at least one LED light source (2). Associated with this light source are a voltage supply (3) which can be switched on and off and a light distribution device (4) for varying a luminous intensity distribution of the light source (2).In order to improve the light distribution device in the case of such a portable lighting device in a simple way in design terms and without a considerable amount of space being required, it has a lens system (5) which can be varied in its distance in relation to the light source (2).