激光透镜系统的核心原理与应用分析（第一部分）

The term "laser lens" is a composite concept. It typically does not refer to a single component, but rather a system that integrates a laser emitter and optical lenses.

Its core principle is as follows: A laser generator emits laser light of a specific wavelength, which is then shaped, expanded, focused, or collimated through a specially designed lens assembly. Finally, the laser light is projected onto the target area to achieve various specific functions.

Below, we will gain an in-depth understanding from the following aspects:

Laser Diode: Serving as the light source, it generates laser light. Common types include infrared lasers, red lasers (e.g., 650nm), and blue lasers (e.g., 450nm), with power ranging from milliwatts to watts.

Optical Lens Assembly: Como el núcleo de la tecnología, determina la forma y calidad del haz láser. Generalmente incluye:

``` - Collimating Lens: Convierte la luz divergente emitida por el láser en un haz paralelo (luz colimada). Esta es su función más básica. ```

``` - Beam Expander: 增加激光束的直径，同时减小其发散角度，从而在较长距离内实现更小的光斑和更集中能量。 ```

``` - Focusing Lens: Concentra el haz de láser paralelo en un punto extremadamente pequeño para obtener una densidad de potencia extremadamente alta (por ejemplo, para fines de corte y grabado). ```

Diffractive Optical Element (DOE) / Holographic Optical Element (HOE): These are advanced components that can split a single laser beam into tens of thousands of beams (for structured light measurement) or shape it into specific patterns (e.g., linear, circular, grid-like, or even custom patterns).

For more information, please refer to the news about PART 2.