Head-mounted display assemblies and related methods for interpupillary distance adjustments
The disclosed head-mounted display assemblies may include a first eyecup and a second eyecup that are configured for respectively positioning a first lens and a second lens in front of intended locations of a user's eyes when the head-mounted display assembly is donned. The first eyecup and the second eyecup may be movable relative to each other to adjust for an interpupillary distance of the user's eyes. A single near-eye display screen may be configured for displaying an image to the user through the first and second eyecups. An enclosure over the single near-eye display screen may include a first transparent component positioned between the first lens and the single near-eye display screen and a second transparent component positioned between the second lens and the single near-eye display screen. Various other methods, devices, systems, and assemblies are also disclosed.
1. A head-mounted display assembly, comprising:
a first eyecup and a second eyecup configured for respectively positioning a first lens and a second lens in front of intended locations of a user's eyes when the head-mounted display assembly is donned by the user;
a single near-eye display screen configured for displaying an image to the user through the first eyecup and the second eyecup; and
an enclosure over the single near-eye display screen, the enclosure comprising:
a first transparent component positioned between the first lens and the single near-eye display screen; and
a second transparent component positioned between the second lens and the single near-eye display screen,
wherein the first eyecup and the second eyecup are movable relative to each other and relative to the first transparent component and the second transparent component to adjust for an interpupillary distance of the user's eyes, and
wherein the first transparent component and the second transparent component are positioned a distance from the single near-eye display screen such that contaminants disposed on the first transparent component and the second transparent component are substantially out-of-focus to a user viewing the single near-eye display screen through the first lens and the second lens.
2. The head-mounted display assembly of claim 1 , wherein the first transparent component is positioned a first distance from the single near-eye display screen and the second transparent component is positioned a second distance from the single near-eye display screen, wherein the second distance is less than the first distance.
3. The head-mounted display assembly of claim 2 , wherein each of the first distance and the second distance is in a range of about 10 mm to about 20 mm.
4. The head-mounted display assembly of claim 2 , wherein a difference between the first distance and the second distance is at least about 2 mm.
5. The head-mounted display assembly of claim 1 , wherein at least one of the first eyecup or the second eyecup is movable relative to the single near-eye display screen.
6. The head-mounted display assembly of claim 1 , wherein the first transparent component and the second transparent component comprise at least one of:
a polymer material;
a glass material; or
a crystalline material.
7. The head-mounted display assembly of claim 1 , wherein the enclosure comprises a hermetically sealed enclosure defined over the single near-eye display screen and under the first transparent component and the second transparent component.
8. The head-mounted display assembly of claim 1 , further comprising a first sealing element positioned between the first eyecup and the first transparent component and a second sealing element positioned between the second eyecup and the second transparent component.
9. The head-mounted display assembly of claim 8 , wherein a first sliding interface is between the first sealing element and the first transparent component and a second sliding interface is between the second sealing element and the second transparent component.
10. The head-mounted display assembly of claim 8 , wherein a first sliding interface is between the first sealing element and the first eyecup and a second sliding interface is between the second sealing element and the second eyecup.
11. The head-mounted display assembly of claim 8 , wherein each of the first sealing element and the second sealing element comprises at least one of:
an elastomeric material; and
a closed-cell foam material.
12. The head-mounted display assembly of claim 1 , wherein:
the first eyecup comprises a first sidewall and a first flange extending radially outward from the first sidewall adjacent to the first transparent component; and
the second eyecup comprises a second sidewall and a second flange extending radially outward from the second sidewall adjacent to the second transparent component.
13. The head-mounted display assembly of claim 1 , further comprising an interpupillary distance adjustment mechanism coupled to the first eyecup and to the second eyecup for adjusting a distance between the first eyecup and the second eyecup.
14. The head-mounted display assembly of claim 13 , further comprising a detent mechanism configured to maintain a relative position of the first eyecup and the second eyecup after an adjustment is made for the interpupillary distance of the user's eyes.
15. The head-mounted display assembly of claim 1 , wherein the first eyecup and the second eyecup are movable relative to each other over a distance of up to about 10 mm.
16. A method of fabricating a head-mounted display assembly, comprising:
hermetically sealing a first transparent component and a second transparent component over a single near-eye display screen to form an enclosure, wherein the first transparent component is positioned a first distance from the single near-eye display and the second transparent component is positioned a second distance from the single near-eye display screen, wherein the second distance is at least about 2 mm different from the first distance;
slidably positioning a first eyecup supporting a first lens over the first transparent component; and
slidably positioning a second eyecup supporting a second lens over the second transparent component, wherein the first eyecup and the second eyecup are positioned to move relative to each other and relative to the first transparent component and the second transparent component to adjust for an interpupillary distance of a user's eyes when the head-mounted display assembly is donned by the user.
17. The method of claim 16 , further comprising:
positioning a first sealing element between the first eyecup and the first transparent component; and
positioning a second sealing element between the second eyecup and the second transparent component.
18. The method of claim 16 , further comprising positioning the first transparent component at a first distance from the single near-eye display screen and positioning the second transparent component at a second distance from the single near-eye display screen, wherein the second distance is less than the first distance.
19. An artificial-reality device, comprising:
a first eyecup comprising a first lens;
a second eyecup comprising a second lens, wherein the first eyecup and the second eyecup are movable relative to each other over a distance of up to about 10 mm to adjust for an interpupillary distance of a user's eyes;
a single near-eye display screen configured for displaying an image to the user through the first eyecup and the second eyecup;
at least one processor configured for rendering the image for display on the single near-eye display screen; and
an enclosure over the single near-eye display screen, the enclosure comprising:
a first transparent component positioned between the first lens and the single near-eye display screen; and
a second transparent component positioned between the second lens and the single near-eye display screen, wherein the first transparent component and the second transparent component are stationary relative to the single near-eye display screen.