We usually say that the 660nm laser diode belongs to red light, but many people will confuse 660nm with 650nm. In fact, they are two different products. Today, Xiaobian will give you a brief introduction to the use and price of 660nm laser diodes.

What kind of light is 660nm?

660nm belongs to the red light region, with high brightness, stable wavelength and moderate penetration. Compared with the common 635nm and 650nm, its red color is a little "darker" and visually darker.

This kind of laser diode is generally made of low power (ranging from several mW to several hundred mW), with high luminous efficiency, stable cost and long service life, so there are many application scenarios.

Main uses of 660nm laser diode

Industrial detection and positioning

Many displacement sensors, alignment systems and infrared barcode scanner actually use 660nm laser. Because the light in this band has stable reflection on metal and plastic surfaces, its anti-interference ability is stronger than 635nm.

Laser display and laser projection

Red laser is one of the three primary colors of RGB. 660nm is just in the warm red color range, and the visual effect is softer than 635nm. In some high-end projection and laser dance desk lamp equipment, 660nm is often selected as the red light source, which is matched with blue and green lasers to make a full-color picture.

Is the price expensive?

To tell the truth, 660nm laser diode is not expensive.

It belongs to a class of chips with mature production and stable technology in red light band, which are both made in China and imported, and the price span is relatively large:

If you are doing medical treatment or optical communication, which requires high reliability, imported QSI and that kind of red light diode are more suitable, with more stable life and consistency.

660nm laser diode is the most "practical" band in red laser, with comfortable brightness, stability and reliability, and wide applications. The price is not expensive, depending on whether you choose domestic or imported.

If you only do general positioning, testing and educational purposes, it is no problem to use domestic ones; However, if you want to pursue longevity, stability or medical direction, it is recommended to import chips, which will be more worry-free in the later stage.