Head mount display device

• US 9,658,460 B2
• Filed: 03/17/2016
• Issued: 05/23/2017
• Est. Priority Date: 10/08/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Minjong, Im, Sanghyuk
• Primary Examiner(s): SHENG, TOM V
• Application Number:
  US15/073,336
• Publication Number:
  US 20170102549A1
• Time in Patent Office: 432 Days
• CPC Class Codes: G02B 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0156 with optionally usable elements
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 2027/0185 Displaying image at variable distance
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0176 characterised by mechanical features
• CPC Class Codes: G02B 27/0179 Display position adjusting means not related to the information to be displayed
• CPC Class Codes: H04N 13/344 with head-mounted left-right displays

Abstract

A head mount display device including a housing comprising a closed, front side and a back side having an opening, a pair of optic modules arranged horizontally and a head fixing unit configured to fix the housing to a user'"'"'s head is provided. Each of the optic modules includes a display provided in the housing; a barrel comprising one side arranged in the housing and the other side exposed outside the housing via the opening; a lens fixed to the barrel; a focus adjuster configured to adjust a distance between the barrel and the display; and a horizontal adjusting unit configured to guide horizontal movement of the optic module, and the focus adjuster and the horizontal adjusting unit provided in one of the optic modules is operable independently from the focus adjuster and the horizontal adjusting unit provided in the other optic module.

Claims

1. A head mount display device comprising:

a housing comprising a closed front side and a back side having a pair of openings;

a pair of optic modules arranged horizontally behind the front side in the pair of openings, each optic module including;

a display provided in the housing;

a barrel having one end arranged in the housing and an opposite end exposed outside the housing via the opening;

a lens fixed to the barrel;

a focus adjuster configured to adjust a distance between the barrel and the display; and

a horizontal adjuster configured to guide horizontal movement of the optic module with respect to the housing; and

a display frame coupled to the back side of the display, the display frame including a barrel accommodating part configured to surround a circumference of the barrel; and

a head fixing unit configured to fix the housing to a user'"'"'s head,

wherein the focus adjuster and the horizontal adjuster provided in one optic module of the pair of optic modules is operable independently from the focus adjuster and the horizontal adjuster provided in the other optical module in the pair of optic modules, and

wherein the focus adjuster changes a position of the barrel arranged in the barrel accommodating part.

2. The head mount display device of claim 1, wherein the focus adjuster comprises:

a screw thread formed in the circumference of the barrel; and

a screw groove formed in the barrel accommodating part, the screw groove corresponding to the screw thread.

3. The head mount display device of claim 2, further comprising at least one friction groove formed in the circumference of the barrel, the at least one friction groove being spaced from the screw thread.

4. The head mount display device of claim 1, wherein the horizontal adjuster comprises:

a coupling portion formed in the optic module, the coupling portion having a fixing hole; and

a slide shaft having opposite ends coupled to the housing, the slide shaft extending horizontally through the fixing hole, and

wherein, when the optic module is moved horizontally, the coupling portion moves along the slide shaft.

5. The head mount display device of claim 4, wherein the coupling portion comprises:

a first coupling portion arranged at a top of the optic module;

a second coupling portion arranged at a bottom of the optic module;

a first fixing hole formed in the first coupling portion that is equal to the cross section of the slide shaft; and

a second fixing hole formed in the second coupling portion that is longer than the cross section of the slide shaft.

6. The head mount display device of claim 4, wherein the coupling portion further comprises a friction member in the fixing hole, the friction member being configured to increase contact friction with respect to the slide shaft.

7. The head mount display device of claim 1, wherein each opening of the pair of openings formed in the housing extends along an axis of the respective barrel and is longer than the respective barrel.

8. The head mount display device of claim 1, wherein the focus adjuster comprises:

a screw having one side rotatably fixed to one of the display frame and the barrel and inserted in a screw groove formed in the other of the display frame and the barrel; and

a wheel coupled to an outer circumference of the screw,

wherein, when rotating the wheel, the screw is movable inward and outward with respect to the screw hole to adjust the position of the barrel.

9. The head mount display device of claim 8, further comprising a magnet arranged adjacent to the screw.

10. The head mount display device of claim 8, further comprising:

a first guide hole formed in the barrel;

a second guide hole formed in the display frame; and

a guide shaft extending parallel to the screw through the first guide hole and the second guide hole,

wherein the first guide hole or the second guide hole moves along the guide shaft when the barrel moves.

11. The head mount display device of claim 10, wherein the first guide hole is located between the front side of the housing and the second guide hole.

12. The head mount display device of claim 1, wherein the horizontal adjuster comprises a rail fixed to the housing, the rail extending horizontally, and

wherein the optic module is connected to the rail and moves horizontally along the rail.

13. The head mount display device of claim 12, further comprising a magnet provided in the optic module, the magnet being arranged to be adjacent to the rail.

14. The head mount display device of claim 12, wherein the focus adjuster comprises:

a screw having one side rotatably fixed to one of the display frame and the barrel and inserted in a screw groove formed in the other of the display frame and the barrel; and

a wheel coupled to an outer circumference of the screw,

wherein, when rotating the wheel, the screw is movable inward and outward with respect to the screw hole to adjust the position of the barrel.

15. The head mount display device of claim 14, wherein the horizontal adjuster comprises:

a button exposed outside the housing; and

a coupling pole extending from the button, the coupling pole being coupled to the optic module through a button opening formed in the housing, the button opening extending horizontally.

16. The head mount display device of claim 15, wherein the button includes a wheel opening exposing one side of the wheel therethrough.

17. The head mount display device of claim 16, further comprising a pair of spacers coupled to right and left sides of the barrel, respectively, and equal to or longer than a diameter of the barrel and a difference between the right and left lengths of the opening,

wherein the spacers cover the wheel opening.

18. The head mount display device of claim 1, further comprising a main board provided between the optic modules and configured to receive an image signal from an external device to provide the image signal to the displays of the optic modules,

wherein each optic module includes:

a display driver coupled to one end of the display and configured to control pixels of the display according to the signal transmitted from the main board; and

a connecting portion configured to connect the main board to the display, and

wherein the display drivers of the optical modules are symmetrically arranged in the housing.

19. The head mount display device of claim 18, wherein the connecting portion is arranged vertically in a center of the main board.

20. The head mount display device of claim 18, wherein the connecting portion comprises a flexible material.

21. The head mount display device of claim 18, further comprising:

an interface provided in a predetermined portion of the housing or the head fixing unit, the interface being connectable to an external terminal; and

a flexible board configured to connect the interface unit to the main board.

22. The head mount display device of claim 1, claim 18, wherein the main board is arranged in a different plane surface from the displays and partially overlap the displays.

23. The head mount display device of claim 1, wherein the head fixing unit further comprises an eyeglass temple unit coupled to right and left ends of the housing to be supported by the user'"'"'s ears;

and

a cushion arranged on an inner surface of each of the eyeglass temple units.

24. The head mount display device of claim 1, further comprising a hood unit provided between the housing and the user'"'"'s face, the hood unit being configured to block external light when the head mount display device is worn.

25. The head mount display device of claim 1, further comprising:

a proximity sensor arranged in a center of the back side of the housing; and

a controller configured to control the displays when sensing an object coming close to the proximity sensor.

26. The head mount display device of claim 1, further comprising:

a gyro sensor configured to sense variation of the housing direction;

a hold button exposed outside the housing; and

a main board configured to control the displays to output different images according to the direction sensed by the gyro sensor except when a hold signal is generated from the hold button.

27. The head mount display device of claim 1, further comprising a nose pad projected between the pair of the optic modules to be placed on the user'"'"'s nose, the nose pad having a V-shape so as to cover a top and both sides of the nose.