APPLICATION

Qianmu has a wide range of applications in security laser lighting, depth sensing, gesture biometrics and industrial machine vision

The application of VCSEL in security

摘要：With the enthusiastic response of laser surveillance camera in 2013, laser camera is no longer just a concept of security industry development, but actually put into application
With the enthusiastic response of laser surveillance camera in 2013, laser camera is no longer just a concept of security industry development, but actually put into application. Benefit from the mass production development of VCSEL, the speed of laser camera from research and development to practical application is amazing.

 VCSEL IN SECURITY

Since the development of laser surveillance camera is inseparable from VCSEL, it is natural to explain the word VCSEL. The VCSEL, whose full name is the Vertical Cavity Surface Emitting Laser, is one of the light sources used in the optical communication. Different from traditional light-emitting diodes, VCSEL light source has adjustable frequency up to several GHz and transmission rate of gigabit BPS. Although traditional laser diodes also have the above properties, they are expensive and far less efficient than VCSEL.

Ordinary surveillance cameras have the problem of limited monitoring distance, or they can see at night but cannot see the image clearly. The VCSEL provides lasers that ignore light intensity, and even in total darkness, a laser camera equipped with the VCSEL and ultra-low-illumination light elements can achieve night vision for hundreds of meters. On the other hand, because the driving voltage and current required by VCSEL are small, the photoelectric conversion efficiency is higher and the thermal effect is lower, the heat source generated by the internal electronic components can be effectively exported by using the simple heat conduction module, thus greatly improving the service life of the internal electronic components of the monitoring camera.Simpler heat dissipation design requirements also mean that the number of holes in the whole monitoring camera can be reduced, which is conducive to the realization of waterproof and dustproof, and convenient for installation and use in the outdoor environment.

In addition to the above advantages, thanks to the characteristics of the laser, VCSEL laser camera has better dust and fog permeability. At the same time, the invisible light emitted by VCSEL laser camera also makes its red storm point smaller and better concealment, which is conducive to the installation in a special environment.A few years ago, when the Chinese market was still waiting to see the development of laser cameras, the European and American markets have gradually phased out infrared LED surveillance cameras and widely updated laser cameras.Now the laser camera has been derived to the civil security market in the Chinese market. VCSEL's laser camera is experiencing a rapid rise in the security industry.