HEAD MOUNTED DISPLAY ASSEMBLY

• US 20140266987A1
• Filed: 03/14/2014
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Optique DEBT Investment LLC
• Original Assignee: Immy Inc.
• Inventors: Magyari, Douglas Peter
• Granted Patent: US 11,187,908 B2
• Time in Patent Office: Days
• US Class Current: 345/8
• CPC Class Codes: G02B 17/0642 off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
• CPC Class Codes: G02B 17/0663 off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
• CPC Class Codes: G02B 2027/0123 comprising devices increasing the field of view
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/015 involving arrangement aiming to get less bulky devices
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0176 characterised by mechanical features
• CPC Class Codes: G02B 5/10 with curved faces
• CPC Class Codes: G02B 7/004 Manual alignment, e.g. micromanipulators
• CPC Class Codes: G02B 7/04 with mechanism for focusing or varying magnification
• CPC Class Codes: G02B 7/1822 comprising means for aligning the optical axis G02B7/1821 takes precedence
• CPC Class Codes: Y10T 29/49464 Assembling of gear into force transmitting device
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A method for assembling a head mounted display includes providing a rigid structural frame, and forming an inner optical assembly by assembling optical components to the structural frame including at least one micro-display configured to generate an image, and at least one reflective optical component configured to direct the image to a user'"'"'s eye. The method includes assembling an outer frame to the inner optical assembly to provide protection for the optical components and customization of the head-mounted display for the user.

Claims

1. A method for assembling a head mounted display, comprising:

providing a rigid structural frame;

forming an inner optical assembly by assembling optical components to the structural frame including at least one micro-display configured to generate an image, and at least one reflective optical component configured to direct the image to a user'"'"'s eye; and

assembling an outer frame to the inner optical assembly to provide protection for the optical components and customization of the head-mounted display for the user.

2. The method of claim 1, wherein the structural frame maintains the optical components in alignment to define an optical light path for reflectively guiding a light ray bundle from the at least one micro-display to a user'"'"'s eyes.

3. The method of claim 1, wherein the structural frame includes opposing upper and lower rims between which are defined first and second openings, and wherein the method further comprises:

inserting the at least one micro-display into at least one pocket formed in the upper rim.

4. The method of claim 3, and further comprising:

incorporating the at least one micro-display into at least one micro-display mechanism that includes mechanisms for user adjustment of focus and interpupillary distance; and

wherein the inserting the at least one micro-display into at least one pocket formed in the upper rim comprises inserting the at least one micro-display mechanism with the at least one micro-display incorporated therein into the at least one pocket.

5. The method of claim 3, and further comprising:

attaching at least one second mirror to a mount formed on the at least one pocket.

6. The method of claim 1, and further comprising:

attaching a compound optical element to the structural frame on a front side of the at least one micro-display.

7. The method of claim 6, wherein the compound optical element includes a first mirror and a third mirror.

8. The method of claim 1, and further comprising:

attaching temple arms to the outer frame for securing the head-mounted display to a user'"'"'s head.

9. The method of claim 1, and further comprising:

attaching at least one lens to a front side of the outer frame to provide a front dust covering for protecting the optical components of the inner optical assembly.

10. The method of claim 9, and further comprising:

attaching at least one dust cover to a rear side of the outer frame to provide a rear dust covering for protecting the optical components of the inner optical assembly.

11. The method of claim 1 wherein the rigid structural frame defines datums and wherein assembling the optical components to the rigid structural frame includes engaging portions of the optical components to the datums in order to facilitate accurate alignment of the optical components during assembly.

12. A head mounted display device comprising:

a structural frame including opposing upper and lower rims between which are defined left and right openings;

left and right micro-displays coupled to the structural frame, and configured to project visual content in a substantially forward direction toward the left and right openings, respectively, and away from a user;

a plurality of optical elements coupled to the structural frame, wherein the structural frame maintains the micro-displays and the optical elements in alignment to define an optical light path for reflectively guiding a light ray bundle from the micro-displays to a user'"'"'s eyes; and

an outer frame coupled to the structural frame, wherein the outer frame provides protection for the micro-displays and optical elements and includes at least one mechanism for securing the head mounted display to a user'"'"'s head.

13. The head mounted display device of claim 12, wherein the at least one mechanism comprises temple arms.

14. The head mounted display device of claim 12, wherein the structural frame has a higher elastic modulus than the outer frame.

15. The head mounted display device of claim 12, wherein the outer frame comprises a polymer and the structural frame comprises an injection molded or cast magnesium alloy.

16. The head mounted display device of claim 12, wherein the outer frame includes left and right lenses on a front side of the outer frame to provide a front dust covering.

17. The head mounted display device of claim 12, wherein the outer frame includes at least one rear dust cover on a rear side of the outer frame.

18. The head mounted display device of claim 12, wherein the plurality of optical elements includes left and right compound optical elements coupled to the structural frame and respectively positioned over the left and right openings on a front side of the micro-displays.

19. The head mounted display device of claim 18, wherein each of the compound optical elements includes a plurality of mirrors.

20. The head mounted display device of claim 12, wherein the plurality of optical elements includes left and right second mirrors coupled to the structural frame with reflective optical surfaces facing in a substantially forward direction.

21. A method for assembling a head mounted display comprising:

providing a structural frame and an outer frame, wherein the structural frame has a higher elastic modulus than the outer frame;

attaching optical components to the structural frame including at least one micro-display configured to generate an image, and at least one reflective optical component configured to direct the image to a user'"'"'s eye;

attaching temple arms and at least one lens to the outer frame; and

assembling the outer frame with the temple arms and the at least one lens attached thereto to the structural frame with the optical components attached thereto.