| 摘要 |
<p>A visual display device is provided for delivering a generated image, preferably combinable with environment light, to the eye of a user. In one embodiment an image generator is masked by at least two masks (222, 224) to provide for a high quality image without waste. In one embodiment, a removably mounted shield (302) or activatable device converts the apparatus from a see-through device to an immersion device and back again. A tracker (100) for outputting an indication of the orientation, attitude and/or position of a head-mounted display (HMD) may be provided. The tracker (100) can be configured so that it is incorporated in the HMD housing and/or can be easily decoupled from the HMD, so that the HMD can be used without the tracker (e.g. for watching movies). Preferably, the tracker provides pass-through of signal to the HMD and, when coupled to the HMD, only a single cable (134) connects the HMD-tracker combination to the host computer (510). In one embodiment, the tracker uses magnetic sensors (542a, 542b, 542c). In another embodiment, one or more inertial sensors, such as a rate gyro (52) and/or accelerometers are used (562a, 562b).</p> |
