ACTIVE BINOCULAR ALIGNMENT FOR NEAR EYE DISPLAYS

摘要

A system and method are disclosed for detecting angular displacement of a display element relative to a reference position on a head mounted display device for presenting a mixed reality or virtual reality experience. Once the displacement is detected, it may be corrected for to maintain the proper binocular disparity of virtual images displayed to the left and right display elements of the head mounted display device. In one example, the detection system uses an optical assembly including collimated LEDs and a camera which together are insensitive to linear displacement. Such a system provides a true measure of angular displacement of one or both display elements on the head mounted display device.

主权项

1. A system for detecting angular displacement of a display element relative to a reference position on a head mounted display device for displaying virtual images on the display element, the system comprising:
an alignment detection assembly, comprising:
an emitter affixed at one of the display element and the reference position, anda sensor affixed at the one of the display element and the reference position not including the emitter, the sensor capable of receiving emissions from the emitter, and the sensor capable of registering emissions from the emitter indicating an angular displacement of the display element while being insensitive to emissions from the emitter indicating a linear displacement of the display element; and a processing unit in communication with the alignment detection assembly and receiving feedback from the sensor, the processing unit determining the angular displacement of the display element from the feedback and the processing unit adjusting a display of the virtual images to the display element to compensate for the determined angular displacement of the display element.