索尼近日提出了一份Lighthouse风格的VR追踪系统的专利申请，专利上描述（原文）：
A method for determining an orientation of a photosensor of a controller with respect to a projector is described. The method includes generating, by a beam generator of the projector, a beam. The method further includes modifying a direction of travel of the beam using a micro-electro-mechanical system (MEMS) mirror that moves in a pattern, deflecting the beam, calculating a time at which the beam is detected and determining based on the pattern and the time an orientation of the beam to determine the orientation of the photosensor.
一种用于确定控制器光传感器相对于投影仪方向的方法，所述方法包括通过投影仪的光束发生器产生光束。所述方法还包括使用以下步骤：以特定模式移动的微机电系统（MEMS）反色镜调整光束的行进方向 ；偏转所述光束；计算所述光束被监测到的时间，并基于所述模式和所述时间以确定光传感器的方向。
