Virtual display system and method

• US 6,353,422 B1
• Filed: 03/31/2000
• Issued: 03/05/2002
• Est. Priority Date: 03/31/2000
• Status: Expired due to Term

• Current Assignee: Rearden, LLC
• Original Assignee: Stephen G. Perlman
• Inventors: Perlman, Stephen G.
• Primary Examiner(s): Nguyen, Chanh
• Assistant Examiner(s): Alphonse, Fritz
• Application Number:
  US09/540,134
• Time in Patent Office: 704 Days
• Field of Search: 345/156, 345/7, 345/8, 359/13, 359/360, 348/56, 623/6.63
• US Class Current: 345/7
• CPC Class Codes: G02B 2027/0174 holographic
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 2027/0198 System for aligning or maintaining alignment of an image in a predetermined direction
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/025 with scanning or deflecting the beams in two directions or dimensions

Abstract

A virtual image system is disclosed comprising: a passive optical unit for interfacing with portions of a user'"'"'s head; and an optical projection unit directing a retinal scanning beam into the passive optical unit, the optical projection unit detached from the passive optical unit.

Claims

1. A virtual image system comprising:

a passive optical unit for interfacing with portions of a user'"'"'s head;

a plurality of optical projection units directing retinal scanning beams into said passive optical unit,

wherein said optical projection units are detached from said passive optical unit; and

wherein said optical projection units are disposed across an area such that when said user moves out of range of one of said optical projection units, said user is within the range of another of said optical projection units.

2. The virtual image system as claimed in claim 1 further comprising a motion capture system for collecting and transmitting positional data on users within the virtual space.

3. The virtual image system as claimed in claim 1 wherein a control unit, responsive to said positional data, causes one or more of said optical projection units to generate virtual images corresponding to the movement of the users.

4. The virtual image system as claimed in claim 1 further including a tracking unit for tracking said passive optical unit and generating positional data based on the position of said passive optical unit.

5. The virtual image system as claimed claim 4 further including a control unit for controlling said scanning beams produced by said optical projection units in response to said positional data.

6. The virtual image system as claimed in claim 5 wherein said control unit causes said scanning beams to follow said passive optical unit when said passive optical unit is moved in a direction substantially perpendicular to said scanning beams.

7. The virtual image system as claimed in claim 5 wherein said optical projection units generate said scanning beams via horizontal and vertical deflection voltages and where, in response to a rotational motion of said passive optical unit, said control unit modifies said horizontal and vertical deflection voltages.

8. The virtual image system as claimed in claim 1 wherein said passive optical unit comprises a pair of contact lenses.

9. The virtual image system as claimed in claim 1 wherein said passive optical unit comprises a pair of glasses.

10. The virtual image system as claimed in claim 1 wherein said passive optical unit comprises one or more holographic lenses.

11. The virtual image system as claimed in claim 1 wherein said optical projection units direct retinal scanning beams into two or more of said passive optical units worn concurrently by two or more users.

12. The virtual image system as claimed in claim 1 wherein two optical projection units direct separate scanning beams into different lenses of said optical projection unit.

13. A virtual image system comprising:

a tracking unit generating positional data responsive to a position of a passive optical unit, said passive optical unit adapted to fit around portions of a user'"'"'s head;

a control unit generating control signals responsive to said positional data; and

one or more optical projection units directing a retinal scanning beams into lenses of said passive optical unit responsive to said control signals,

said optical projection units disposed across an area such that when said user moves out of range of one of said optical projection units, said user is within the range of another of said optical projection units.

14. The virtual image system as claimed in claim 13 wherein said control unit is a computer.

15. The virtual image system as claimed in claim 13 wherein said retinal scanning signal is a raster scan signal.

16. The virtual image system as claimed in claim 15 wherein said optical projection unit generates said scanning signal via horizontal and vertical deflection voltages and where, in response to a rotational motion of said passive optical unit, said control unit modifies said horizontal and vertical deflection voltages.

17. The virtual image system as claimed in claim 13 wherein said control signal is a vector scan signal.

18. The virtual image system as claimed in claim 13 wherein said control unit causes said scanning signal to follow said passive optical unit when said passive optical unit is moved in a direction substantially perpendicular to said scanning beam.

19. The virtual image system as claimed in claim 13 wherein said positional data includes the three-dimensional coordinates (e.g., ‘

x,’

‘

y,’

‘

z’

coordinates) and angle (e.g., ‘

yaw,’

‘

pitch,’ and

‘

roll’

) of the passive optical unit.

20. The virtual image system as claimed in claim 13 wherein said passive optical unit is a pair of contact lenses.

21. The virtual image system as claimed in claim 13 wherein said passive optical unit is a pair of glasses.

22. The virtual image system as claimed in claim 13 wherein said passive optical unit includes one or more holographic lenses.

23. The virtual image system as claimed in claim 13 wherein said optical projection units directs retinal scanning beams into two or more of said passive optical units worn concurrently by two or more users.

24. The virtual image system as claimed in claim 13 wherein two of said optical projection units direct separate scanning beams into different lenses of said optical projection unit.

25. The virtual image system as claimed in claim 13 further comprising a motion capture system for collecting and transmitting positional data on users within a virtual space.

26. The virtual image system as claimed in claim 25 wherein a control unit, responsive to said positional data, causes one or more of said optical projection units to generate virtual images corresponding to the movement of said users.