LED With Adjustable Light Beams And Controlling Unit
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Solution Overview
Problem
Conventional light-emitting diodes (LEDs) lack the ability to adjust light projection angles and are prone to vignetting and flashlight effects, limiting their application in devices like cameras.
Innovation Solution
A light-emitting diode design featuring a substrate with multiple dies divided into groups, a primary optical lens, and a controlling unit that selectively drives different groups of dies to emit light, allowing for adjustable light shapes and projection angles by varying the light beam's shape and intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional light-emitting diode uses a single light source, then the structure is simple, but the light projection angle cannot be adjusted and vignetting effect occurs
Solution Approach 1:
The patent divides the light-emitting diode structure into multiple dies (first group and second group) arranged in different spatial positions. The first group of dies is disposed at a center of the substrate, while the second group of dies is arranged in a ring enclosing the first group. This segmentation allows different groups to emit light in different directions and angles, enabling adjustable light projection angles while maintaining a relatively simple integrated structure.
2Object-affected harmful factors
If a conventional light-emitting diode uses a single light source, then the device is simple, but vignetting effect and flashlight effect occur
Solution Approach 1:
The patent applies local quality by assigning different spatial arrangements and emission characteristics to different groups of dies. The first group of dies at the center provides one type of light emission, while the second group of dies in the ring configuration provides another type of light emission with different projection angles. This local differentiation eliminates vignetting and flashlight effects by ensuring uniform light distribution across the imaging area.
3Adaptability or versatility
If multiple dies are used in different groups, then light shapes and projection angles become adjustable, but the control complexity increases
Solution Approach 1:
The patent implements dynamics by enabling independent control of the first and second groups of dies through a controlling unit. The controlling unit can selectively activate different groups of dies or adjust their emission intensities dynamically, allowing real-time adjustment of light shapes and projection angles. This dynamic control capability provides versatility while maintaining ease of operation through electronic control mechanisms.
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
Enables flexible light emission with adjustable shapes and angles, reducing vignetting and flashlight effects, thereby enhancing the LED's versatility and performance in various electronic devices.
Implementation Method 1
a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of the dies, the primary optical lens covers the dies
Data Source
AI summary
A light-emitting diode with adjustable light beams and a method for controlling the same. The light-emitting diode includes a substrate, multiple dies on the substrate, a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies, the primary optical lens covers the dies, and a controlling unit selectively drives the first or the second group to emit light, wherein a light beam formed by light that is emitted by the first group and passes through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group and passes through the primary optical lens.