September 10, 2018 - LG Innotek launches its first Vertical Cavity Surface Emitting Laser (VCSEL) new product Bidos PLPVQ 940A series. The products are aimed at new applications, including 3D sensing, and are another futuristic technology in LG Innotek's new product portfolio. The phone's facial recognition technology is one of several new industry standards being built by LG Innotek with VCSEL technology.

As a light source, VCSEL can emit infrared light to illuminate the face evenly, and then the camera can capture the important features of the face of the user. The image captured is compared to the user image stored in the system -- the device unlocks after the two match. The VCSEL combines significant advantages of two lighting technologies - both IRED's high power density and simple packaging, but also the laser's narrow spectrum width and high switching speed. Unlike a laser diode (side emitting laser), a Bidos is a laser that emits light perpendicular to the surface of a semiconductor chip. And the temperature has little effect on the wavelength. VCSEL chips are easier to install in terminal applications - you can use the existing packaging of leds, or you can use as an array (each VCSEL chip consists of hundreds of individual light-emitting holes).

"Compared with other infrared technologies, the VCSEL has better beam quality, better focus and compact size," said the market Team leader of LG Innotek semiconductor infrared/laser/sensor business unit. Our current infrared portfolio includes IRED, side-fired lasers, and VCSEL, and customers can now choose the best solution for their particular application.

The PLPVQ 940A with a wavelength of 940 nm provides a maximum efficiency of 27% and an output power of 300 mW. Double welded wire can supply energy to laser diode quickly and uniformly. VCSEL illumination Angle of 65 ° 65 ° x. The package is extremely small and the size is only 1.9mm x 2.20mm x 0.85mm.

VCSEL products are widely used and diversified. In addition to facial recognition, it also applies to areas such as robotics, drones, augmented reality (AR) and virtual reality (VR).