Multi-LED A-19 Emitter Recess Lens Wide-Angle Output
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Solution Overview
Problem
Conventional LED-based lamps for replacing A-19 incandescent bulbs face challenges in providing high power and wide-angle light due to size limitations, resulting in limited brightness and efficiency.
Innovation Solution
A high-power LED emitter module with multiple LEDs disposed in a recess on a substrate and a single lens, designed to provide wide-angle light output without additional secondary optical components, allowing for lower power consumption and higher energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional LED-based lamps are used to replace A-19 incandescent bulbs, then energy efficiency is improved, but brightness and power output are limited due to size constraints
Solution Approach 1:
The patent divides the LED emitter into multiple discrete LED chips (e.g., 9 LEDs arranged in a 3x3 array) mounted on a common substrate. This segmentation allows each LED to contribute to the overall light output, achieving high power equivalent to 40W+ incandescent bulbs while maintaining the compact A-19 form factor. The modular arrangement optimizes both energy efficiency and total brightness output.
2Use of energy by stationary object
If conventional LED emitters are used in A-19 lamps, then energy consumption is reduced, but wide-angle light distribution cannot be achieved
Solution Approach 1:
The patent combines multiple LED chips on a single substrate with a unified optical lens system. The lens is positioned to receive light from all LEDs and redirect it into a wide-angle distribution pattern (120-160 degrees). This merging approach achieves both low power consumption and wide-angle illumination that mimics traditional incandescent bulb performance.
3Power
If multiple LEDs are placed in a compact A-19 bulb, then high power output is achieved, but optical efficiency is reduced without secondary lenses
Solution Approach 1:
The patent introduces a single optical lens as an intermediary element between the multiple LED chips and the external environment. This lens serves as a mediator that collects light from all LEDs and redirects it into a wide-angle beam, achieving both high power output and maintained optical efficiency without requiring complex secondary optical components.
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 enables LED-based A-19 lamps to replace incandescent bulbs with improved brightness and efficiency, offering wide-angle light distribution up to 130 degrees at 50% peak intensity and higher optical efficiency compared to conventional systems.
Implementation Method 1
The LED emitter includes a plurality of light-emitting diodes (LEDs) disposed in a recess in a substrate
Implementation Method 2
a single lens disposed over the LEDs and the substrate
Data Source
AI summary
An LED (light-emitting diode) high-power wide-angle A-19 lamp needs only a single LED emitter having multiple LEDs. The LED A-19 lamp includes a lamp envelop structure configured for transmission of light therethrough and a base structure coupled to a lower portion of the lamp envelop structure for coupling to an external power source. The dimensions of the lamp envelop structure and the base structure conform to requirement of a conventional A-19 lamp. The LED emitter includes a plurality of light-emitting diodes (LEDs) disposed in a single recess in a substrate and a single lens disposed over the LEDs and the substrate. In a specific embodiment, the emitter is configured to consume electrical power of 30 Watts or higher and to provide light distribution at 130 degrees or wider at 50% peak intensity without additional secondary optical components.