雷射二極體(LD)與發光二極體(LED)的區別
LD, Laser Diode：
A semiconductor-based light source that generates a focused beam via stimulated emission. Features high monochromaticity, strong directionality, phase consistency, and stable energy output, ideal for high-precision and high-efficiency applications.
LED, Light Emitting Diode：
A light source based on spontaneous emission with high beam divergence. Features a simple structure and low cost, widely used in various everyday applications.
| Laser Diode | Light Emitting Diode | |
| Optical Characteristics | Coherent, stable-output | Incoherent, diffuse-energy |
| Output Power | High | Low |
| Beam Concentration | high | Low |
| tolerances | Low | High |
| Case |  |
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│ Tips: Lasers exhibit a speckle pattern and a Gaussian distribution (Left), whereas LEDs feature a wider, more diffused beam spread (Right).
Taking the EasyAir data as an example, the advantage of Laser Diodes (LD) lies in their stable energy output and concentrated light, allowing them to precisely target the intended area and enhance product efficacy and accuracy. This stable and high-efficiency characteristic is unmatched by LEDs.
Both LD and LED possess unique technical characteristics suitable for different application scenarios. By combining LD with Photobiomodulation (PBM) technology, LECC Technology unlocks more possibilities for high-precision, low-power, and non-invasive applications, demonstrating tremendous potential especially in wellness and health sectors. As technology advances, these applications will further transform our lives.
Laser Diodes (LD) feature concentrated and precise wavelengths, making them ideal for high-precision applications; whereas Light Emitting Diodes (LED) have a broader wavelength distribution and a more diffuse beam.
Laser Diodes (LD) can output higher energy in the same amount of time while stably maintaining a longer runtime.
As shown in the chart, Laser Diodes (LD) feature higher optical power output and can maintain stability over a longer duration.
Further Reading：
What is Photobiomodulation (PBM)?
