LED Lighting Array for Portable Task Light

The patent applies the dynamics principle by making the LED emission planes adjustable rather than fixed. The LEDs can be oriented at different angles relative to the tube axis, allowing the illumination pattern to be dynamically optimized for different target distances. This enables the system to achieve higher beam disk flux efficiency by adapting the LED orientations to match the specific application requirements, resolving the contradiction between illumination efficiency and structural simplicity.

The patent implements periodic action by using pulsed direct current drive instead of continuous current. The pulsed drive circuit operates at a frequency that maximizes LED intensity output, creating periodic illumination cycles that enhance the overall illumination efficiency and beam disk flux efficiency. This periodic operation allows the LEDs to be driven at higher peak currents while maintaining lower average power consumption, thereby improving illumination intensity without excessive heat generation.

The patent applies asymmetry by orienting LEDs at different angles relative to the tube axis rather than using uniform orientations. Specifically, LEDs in different columns are angled at different angles (e.g., first column at angle α, second column at angle β, third column at angle γ), creating an asymmetric emission pattern that eliminates exclusion zones and provides uniform illumination coverage across the target area. This asymmetric arrangement allows the light beams to overlap more effectively, covering the entire beam disk area without dark spots.

The patent transitions from a two-dimensional planar arrangement to a three-dimensional spatial configuration by mounting LEDs on multiple planes that are angled relative to each other. The first, second, and third columns of LEDs are disposed on different planes with different orientations, creating a three-dimensional emission pattern. This dimensional change allows the illumination to cover a broader area and eliminates the exclusion zones that would exist with planar arrangements, while the modular column structure maintains manufacturing simplicity.

The patent extracts and eliminates the transformer component from the power system by using a pulsed direct current drive circuit that can operate directly from rectified AC power or battery power without requiring voltage transformation. This extraction of the transformer removes unnecessary weight and complexity from the portable task light while maintaining reliable power delivery through efficient pulsed current operation that maximizes LED power conversion efficiency.

The patent changes the electrical operating parameters by using pulsed direct current with specific pulse widths and frequencies optimized for LED operation. The pulsed drive circuit converts AC or battery power into pulsed DC with parameters (pulse width, frequency, duty cycle) that maximize LED light output while minimizing power consumption and heat generation. This parameter optimization improves power efficiency and reduces the energy requirements, thereby reducing the size and weight of the power source needed.