Oculus Patent | Passive locators for a virtual reality headset
Publication Number: 10198032
Publication Date: 2019-02-05
A virtual reality (VR) headset includes a plurality of marker groups each corresponding to a different location on the VR headset. Each marker group includes one or more passive locators having positions relative to each other. Passive locators included in a marker group are configured to reflect one or more bands of light emitted by a source device. A VR system determines positions of passive locators relative to each other in a marker group and bands of light reflected by the passive locators included in the marker group to determine a location on the VR headset. Based on the location on the VR headset, the VR system determines a position of the VR headset and identifies content to provide to the VR headset.
The present disclosure generally relates to virtual reality headsets, and specifically relates to passive locators on a virtual reality headset.
Virtual reality (VR) systems include components for determining position and movement of a VR headset worn by a user. Conventional VR systems determine position and movement of a VR headset through active devices (e.g., light emitting diodes) that emit light used by the VR system to track the location of the VR headset. However, using active components increases the complexity of design and manufacture of VR headsets.
A virtual reality (VR) system includes a VR headset, a source device, an imaging device, and a VR console. The VR headset includes an electronic display configured to present content to a user of the VR headset. Additionally, the VR headset includes a plurality of marker groups, each marker group comprising one or more passive locators and corresponding to a different location on the VR headset. The source device illuminates the VR headset, and the imaging device captures a series of images of the VR headset. At least one image of the series of images includes a marker group that has been illuminated by the imaging device. The VR console receives the series of images from the imaging device and, based at least in part on the reflectance configuration of the marker group included in the series of images, determines a location on the VR headset that corresponds to the marker group included in the series of images. Based on the determined location on the VR headset corresponding to the marker group, the VR console determines a position of the VR headset. Using the determined position of the VR headset, the VR console updates content and provides the updated content to the VR headset.
Each marker group on a VR headset has a unique reflectance configuration. The reflectance configuration of a marker group describes a spatial configuration (e.g., a number and arrangement of passive locators) of passive locators within the marker group and describes a reflectance type for each of the passive locators within the marker group. The reflectance type of a passive locator describes a particular band of light (e.g., a set of wavelengths of light) reflected by the passive locator. In some embodiments, at least one marker group on the VR headset includes two or more passive locators having differing reflectance types.