3DV systems : ZCam - depth camera

ZCam is the RGB and depth cameras for gesture application. 3DV systems joined Microsoft Natal project for gaming technology development, and later they were acquired by Microsoft in 2009.

How Kinect works with PrimeSense

Microsoft applys 3D motion sensing technology into XBox - Kinect, letting users interact with gaming freely without controller in hand. Camera and gesture recognition make the function of motion sensing. PrimeSense delivers the chip and structure to the 3D sensing technology, helping Microsoft to achieve controller-free entertainment device.

Canesta: time-of-flight CMOS sensor

Recently, Canesta agree to be acquired by Microsoft.

Microsoft: 3D Gesture Recognition

Microsoft' CEO, Steven A. Ballmer, discussed Microsoft's plans to advance the gesture technology well beyond video games in recent interview. "I'm excited to be way out in front and want to push the pedal on that", he said.

OPTEX: 3D Image Camera

Optex is based in Otsu, Shiga Prefecture, Japan. 

Optex introduced the world's first infrared-based automatic door sensor in 1980 and since has become a world leading supplier of infrared-based sensor products for applications in the security, automatic door, factory automation, environment monitoring, and transportation fields. The company's core sensing technology - a fusion of infrared and image processing techniques - provides cost efficient and reliable products that can detect objects and humans with accuracy.