Multifunction LED Light with Microprocessor Control and Aspherical Lens
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional portable lighting devices using light emitting diodes (LEDs) are limited by deficiencies in optical components and drive circuits, leading to inadequate brightness, operating life, durability, and energy efficiency, particularly in applications requiring versatile and high-intensity illumination.
Innovation Solution
A combination task lamp and flashlight with a tubular housing containing LED light sources, a lens system combining aspherical and spherical refracting surfaces for optimized light distribution, and a circuit with a current selector and switching regulator to manage LED arrays for flood and spot lighting, along with a microprocessor-controlled switch for mode operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional LED lighting devices are used, then power consumption is reduced, but brightness and illumination intensity are insufficient
Solution Approach 1:
The patent combines multiple LED light sources into arrays, merging their individual light output to achieve high-intensity illumination while maintaining the energy efficiency of LED technology. The flood light array and spot light array work together to provide comprehensive high-intensity lighting coverage.
Solution Approach 2:
The lighting device provides multiple lighting modes (flood light, spot light, and combination modes) through a single integrated system, making it universally applicable to various illumination requirements while maintaining consistent energy efficiency across all modes.
2Reliability
If specialized LED devices are designed for specific applications, then performance is optimized, but device complexity and cost increase
Solution Approach 1:
The patent designs a universal lighting device that can perform multiple specialized functions (flood lighting, spot lighting, and combination modes) through integrated LED arrays and optical systems, eliminating the need for multiple separate specialized devices while maintaining high performance in each mode.
Solution Approach 2:
The lighting device is segmented into functional modules (flood light array, spot light array, control circuitry) that can operate independently or in combination, allowing the system to provide specialized performance for different applications while maintaining overall system simplicity through modular architecture.
3Illumination intensity
If LED arrays are used for high-intensity illumination, then brightness is improved, but energy distribution uniformity deteriorates
Solution Approach 1:
The patent employs different optical configurations for different regions of the LED arrays - flood light lenses for broad area illumination and spot light lenses for focused beams - ensuring that each region of the device provides uniformly distributed energy appropriate to its intended function, while the overall system achieves high-intensity illumination.
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 provides a portable, efficient, and versatile lighting device capable of delivering high-intensity flood and spot lighting with improved brightness, uniformity, and extended operation, addressing the limitations of existing LED-based lighting technologies.
Implementation Method 1
The aspherical reflecting surface has a focal point and a central axis of symmetry—an optical axis—for reflecting light rays emitted from a compact light source located approximately at the focal point in a forward direction
Implementation Method 2
The spherical refracting surface is disposed in the path of the reflected light rays, centered on and normal to the central axis, concave in the forward direction of the reflected light rays
Data Source
AI summary
A method is provided for reducing the power rating of a current limiting resistor (R) in a branch circuit having at least one protected element and the current limiting resistor connected between first and second nodes. The method includes the steps of: determining a maximum fault current in the branch circuit; determining a total current limiting resistance to limit the current in the branch circuit having the short-circuited elements to the maximum fault current; inserting a fuse having an intrinsic resistance in the branch circuit; and dividing the determined total current limiting resistance between the resistor (R) and the intrinsic resistance of the fuse.