SEE-THROUGH COMPUTER DISPLAY SYSTEMS

• US 20160091718A1
• Filed: 09/26/2014
• Published: 03/31/2016
• Est. Priority Date: 09/26/2014
• Status: Active Grant

• Current Assignee: Mentor Acquisition One, LLC (Magic Leap, Inc.)
• Original Assignee: Osterhout Design Group
• Inventors: Border, John N., Bietry, Joseph, Hires, Gregory
• Granted Patent: US 9,366,868 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0121 Parasitic image effect attenuation by suitable positioning of the parasitic images
• CPC Class Codes: G02B 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0179 Display position adjusting means not related to the information to be displayed
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid

Abstract

Aspects of the present invention relate to providing see-through computer display optics.

Claims

1. A display assembly for a head mounted display comprising:

a. a light source;

b. a reflective image source;

c. one or more lenses;

d. a combiner that redirects light reflected by the reflective image source for viewing by a user'"'"'s eye and provides a see-through view of an environment; and

e. a segmented partially reflective layer that redirects light from the light source towards the reflective image source and transmits light reflected by the reflective image source, wherein the segmented partially reflective layer includes at least one flat segment;

wherein the segmented partially reflective layer is positioned between the one or more lenses and the combiner.

2-7. -7. (canceled)

8. A display assembly for a head mounted display comprising:

a. a light source;

b. a reflective image source;

c. one or more lenses;

d. a combiner that redirects light reflected by the reflective image source for viewing by a user'"'"'s eye and provides a see-through view of an environment;

e. a segmented partially reflective layer that redirects light from the light source towards the reflective image source and transmits light reflected by the reflective image source, wherein the segmented partially reflective layer includes at least one flat segment; and

f. a trim polarizer between the one or more lenses and the combiner and wherein at least one of the lenses is a plastic lens.

9. The display assembly of claim 8 further comprising a half wave retarder between the trim polarizer and the combiner.

10. A display assembly for a head mounted display comprising;

a. a light source;

b. a reflective image source;

c. one or more lenses;

d. a combiner that redirects light reflected by the reflective image source for viewing by a h view of an environment;

e. a segmented partially reflective layer that redirects light from the light source towards the reflective image source and transmits light reflected by the reflective image source, wherein the segmented partially reflective layer includes at least one flat segment;

wherein the segmented partially reflective layer includes a multiple polarizer comprising a reflective polarizer and an absorptive polarizer and the reflective image source includes a quarter wave retarder and wherein the reflective polarizer is laminated to the absorptive polarizer and the reflective polarizer encompasses a smaller area than the absorptive polarizer.

11. The display assembly of claim 10 wherein the reflective polarizer encompasses less than 80% of the area of the absorptive polarizer.

12. The display assembly of claim 10 wherein the reflective polarizer encompasses less than 50% of the area of the absorptive polarizer.

13. A display assembly for a head mounted display comprising:

a. a light source;

b. a reflective image source;

c. one or more lenses;

d. a combiner that redirects light reflected by the reflective image source for viewing by a h view of an environment;

e. a segmented partially reflective layer that redirects light from the light source towards the reflective image source and transmits light reflected by the reflective image source, wherein the segmented partially reflective layer includes at least one flat segment;

wherein the segmented partially reflective layer includes a multiple polarizer comprising a reflective polarizer and an absorptive polarizer and the reflective image source includes a quarter wave retarder and wherein the reflective polarizer is supported by a transparent carrier film and the absorptive polarizer is a separate film.

14-25. -25. (canceled)