Modular 3-D shutter glasses and method

• US 20010038491A1
• Filed: 02/02/2001
• Published: 11/08/2001
• Est. Priority Date: 02/02/2000
• Status: Abandoned Application

• Current Assignee: X3D Technologies Corp. (Hong Kong Winalite Group, Inc.)
• Original Assignee: X3D Technologies Corp. (Hong Kong Winalite Group, Inc.)
• Inventors: Fergason, John D.
• Application Number:
  US09/776,408
• Publication Number:
  US 20010038491A1
• Time in Patent Office: Days
• US Class Current: 359/466
• CPC Class Codes: G02B 30/34 Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
• CPC Class Codes: G02C 7/101 having an electro-optical light valve electro-optical elements per se G02F
• CPC Class Codes: G02C 7/12 Polarisers
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: H04N 13/341 using temporal multiplexing

Abstract

Stereoscopic eyewear (10) enables a viewer to see a three dimensional image from a two dimensional image which is projected or displayed on a screen. The eyewear may be coordinated with the two dimensional image either with a signal transmitted through a cable (40) or with an infrared (IR) transmitter (200, 201) and receiver. The IR transmitter may include two sources of IR light to increase the likelihood of reception by the transmitter. The IR transmitter may have a curved bottom (202) covered with Velcro™ material (203) for attachment to another piece of Velcro™. The curved bottom in combination with the Velcro™ enables control of the orientation of the IR transmitter. When the eyewear is connected via a cable, guide bars (61, 62) or a cable loop (42, 43, 44) can be included to provide strain relieve. The shutter or lens of the eyewear may be made from a liquid crystal cell (11L, 11R). For example, a five sided twisted nematic cell having five sides oriented at 10° cooperating a swept back frame to provide a modern streamline look fore the eyewear.

Claims

1. Head mountable frame for light shutters for viewing of images, comprising

a retainer mechanism to retain a light shutter mechanism,

a cavity in the frame for a circuit to provide for operation of a light shutter, and

a closure for the cavity to retain a circuit.

2. The frame of

claim 1

, wherein the closure comprises tape.

3. The frame of

claim 1

, wherein the closure comprises a tape-like material for closing the cavity and for cooperating with the retainer mechanism to retain a light shutter mechanism with respect to the frame.

4. The frame of

claim 1

, wherein the closure comprises a bar that fits to the cavity to retain a circuit in the cavity.

5. The frame of

claim 1

, further comprising a circuit in the cavity, the circuit including wires.

6. The frame of

claim 5

, wherein the retainer mechanism comprises a pair of openings for retaining respective light shutters and the wires are connectable to respective light shutters.

7. The frame of

claim 5

, further comprising a strain relief in the frame to retain the wiring with respect to the frame.

8. The frame of

claim 7

, wherein the strain relief comprises openings in the frame for passage of the wiring in a loop with a sufficiently close spacing of the wiring to provide a secure frictional gripping of the wiring in response to tension applied to the wiring.

9. The frame of

claim 7

, wherein the strain relief comprises a number of bar-like protrusions on the frame for passing wiring therebetween.

10. The frame of

claim 9

, further comprising adhesive for adhering the wiring to the bar-like protrusions.

11. The frame of

claim 1

, further comprising a strain relief to retain with respect to the frame wiring to provide for operation of light shutters, the strain relief including at least two openings for threading of wiring therethrough to provide for relatively sharp bends in the wiring to resist pulling of the wiring through the openings while transmitting pull force directly to the frame.

12. A viewing apparatus for viewing stereoscopic images, comprising

a mounting frame for wearing on the head of a person,

a pair of light shutters in the mounting frame,

circuitry to provide signals to the light shutters for operating the shutters,

a cavity in the mounting frame for at least part of the circuitry, and

a closure for the cavity to retain the circuitry.

13. The apparatus of

claim 12

, wherein the closure is tape.

14. The apparatus of

claim 13

, Wherein the tape also provides for retaining the light shutters in the mounting frame.

15. The apparatus of

claim 12

, wherein the closure is a bar.

16. The apparatus of

claim 15

, wherein the bar includes a portion to cover at least part of the cavity to retain the circuitry therein, and also includes respective portions to provide for retaining the light shutters in the mounting frame.

17. The apparatus of

claim 12

, wherein the circuitry comprises wires for coupling signals to respective light shutters.

18. The apparatus of

claim 17

, wherein the circuitry includes a circuit board.

19. The apparatus of

claim 12

, further comprising wiring for coupling externally derived signals to the circuitry or to the light shutters.

20. The apparatus of

claim 19

, further comprising a strain relief in the mounting frame to retain the wiring with respect to the mounting frame.

21. The apparatus of

claim 20

, wherein the strain relief comprises openings in the mounting frame for passage of the wiring in a loop with a sufficiently close spacing of the wiring to provide a secure frictional gripping of the wiring in response to tension applied to the wiring.

22. The apparatus of

claim 12

, wherein the frame is eyewear, including temple pieces, an area for the nose of a user, and wherein the retainer mechanism comprises a pair of openings for retaining respective light shutters in position relative to the eyes of a user to control images provided to the eyes.

23. The apparatus of

claim 12

, wherein the light shutters comprise electro-optical light shutters having terminals, a cavity in the mounting frame for placement of the terminals with space for wiring connections to the terminals to provide for operation of the light shutters.

24. The apparatus of

claim 12

, wherein the mounting frame has openings for the light shutters, and further comprising tab retainers for retaining the light shutters in the openings.

25. The apparatus of

claim 24

, wherein the tab retainers include a pair of walls, one of the walls comprising a flange extending generally in parallel with a light shutter and the other wall spacing the flange away from the major portion of the mounting frame.

26. The apparatus of

claim 25

, wherein the openings have walls about at least a portion thereof extending generally in parallel with a light shutter for cooperating with tab retainer walls to retain a light shutter in a respective opening.

27. The apparatus of

claim 26

, further comprising tape covering a portion of each light shutter to retain the light shutter in the opening.

28. The apparatus of

claim 26

, further comprising a bar covering a portion of each light shutter to retain the light shutter in the opening.

29. The apparatus of

claim 12

, wherein the mounting frame has a non-planar, wrap-around shape.

30. The apparatus of

claim 12

or

29

, wherein the light shutters and openings in the mounting frame are non-rectangular.

31. The apparatus of

claim 30

, wherein the light shutters and openings are pentagonal.

32. The apparatus of

claim 31

, wherein the light shutters and openings have at least two right angle corners.

33. The apparatus of

claim 32

, wherein the light shutters are twisted nematic liquid crystal cells rubbed to provide rub direction axes other than parallel or perpendicular to walls adjoining such right angle corners.

34. The apparatus of

claim 30

, wherein the light shutters are twisted nematic liquid crystal cells rubbed to provide rub direction axes other than parallel or perpendicular to walls adjoining such right angle corners, such rub directions being oriented relative to the viewing direction through the light shutters to provide good contrast including substantially maximum dark condition with substantially minimal light leakage occurring in the light blocking mode

35. The apparatus of

claim 34

, wherein the light shutters are positioned in the mounting frame as to be generally non-perpendicular to the direction of viewing through the light shutters.

36. The apparatus of

claim 34

, wherein the rub directions of respective surfaces of a twisted nematic liquid crystal cell are perpendicular to each other.

37. The apparatus of

claim 12

, further comprising a strain relief to retain with respect to the frame wiring to provide for operation of light shutters, the strain relief including at least two openings for threading of wiring therethrough to provide for relatively sharp bends in the wiring to resist pulling of the wiring through the openings while transmitting pull force directly to the frame.

38. The apparatus of

claim 12

, further comprising a strain relief to retain with respect to the frame wiring to provide for operation of light shutters, wherein the strain relief comprises a number of bar-like protrusions on the frame for passing wiring therebetween.

39. The apparatus of

claim 38

, further comprising adhesive for adhering the wiring to the bar-like protrusions.

40. The apparatus of

claim 12

, wherein the mounting frame includes temple pieces, the circuitry comprising wiring connection to an external electrical source, and a clip slidable on a temple piece for clipping wiring with respect to the temple piece to hold the wiring in generally parallel relation with at least a portion of the temple piece and to determine the location along the temple piece where the wiring is released from substantially parallel relation.

41. The apparatus of

claim 40

, further comprising a strain relief for retaining the wiring relative to the mounting frame substantially independently of the clip.

42. A viewing apparatus for viewing stereoscopic images, comprising

a mounting frame for wearing on the head of a person,

a pair of light shutters in the mounting frame,

circuitry to provide signals to the light shutters for operating the shutters, and wherein the mounting frame has a non-planar, wrap-around shape.

43. The apparatus of

claim 42

, wherein the light shutters and openings in the mounting frame are non-rectangular.

44. The apparatus of

claim 43

, wherein the light shutters and openings are pentagonal.

45. The apparatus of

claim 43

, wherein the light shutters and openings have at least two right angle corners.

46. The apparatus of

claim 45

, wherein the light shutters are twisted nematic liquid crystal cells rubbed to provide rub direction axes other than parallel or perpendicular to walls adjoining such right angle corners.

47. The apparatus of

claim 42

, wherein the light shutters are twisted nematic liquid crystal cells rubbed to provide rub direction axes other than parallel or perpendicular to walls adjoining such right angle corners, such rub directions being oriented relative to the viewing direction through the light shutters to provide good contrast including substantially maximum dark condition with substantially minimal light leakage occurring in the light blocking mode

48. The apparatus of

claim 42

, wherein the light shutters are positioned in the mounting frame as to be generally non-perpendicular to the direction of viewing through the light shutters.

49. The apparatus of

claim 42

, wherein the rub directions of respective surfaces of a twisted nematic liquid crystal cell are perpendicular to each other.

50. A viewing apparatus for viewing stereoscopic images, comprising

a mounting frame for wearing on the head of a person,

a pair of light shutters in the mounting frame,

circuitry to provide signals to the light shutters for operating the shutters, and

further comprising a strain relief to retain with respect to the frame wiring to provide for operation of light shutters, the strain relief including at least two openings for threading of wiring therethrough to provide for relatively sharp bends in the wiring to resist pulling of the wiring through the openings while transmitting pull force directly to the frame.

51. A viewing apparatus for viewing stereoscopic images, comprising

a mounting frame for wearing on the head of a person,

a pair of light shutters in the mounting frame,

circuitry to provide signals to the light shutters for operating the shutters, and

further comprising a strain relief to retain with respect to the frame wiring to provide for operation of light shutters, wherein the strain relief comprises a number of bar-like protrusions on the frame for passing wiring therebetween.

52. The apparatus of

claim 51

, further comprising adhesive for adhering the wiring to the bar-like protrusions.

53. A viewing apparatus for viewing stereoscopic images, comprising

a mounting frame for wearing on the head of a person,

a pair of light shutters in the mounting frame,

circuitry to provide signals to the light shutters for operating the shutters,

wherein the mounting frame includes temple pieces, the circuitry comprising wiring connection to an external electrical source, and a clip slidable on a temple piece for clipping wiring with respect to the temple piece to hold the wiring in generally parallel relation with at least a portion of the temple piece and to determine the location along the temple piece where the wiring is released from substantially parallel relation.

54. The apparatus of

claim 53

, further comprising a strain relief for retaining the wiring relative to the mounting frame substantially independently of the clip.

55. A transmitter housing for a device for transmitting electromagnetic energy to a receiver, the transmitter comprising

a housing for an electromagnetic energy transmitter,

the housing having a curved wall for supporting the housing,

a variable retainer at the curved wall for cooperation with a support surface to position the housing at various directional angles relative to such support surface.

56. The housing of

claim 55

, wherein the variable retainer is Velcro type material.

57. The housing of

claim 56

, wherein the Velcro type material is cooperative for retention in relatively fixed orientation thereof and of the housing with respect to such support surface.

58. The housing of

claim 57

, further comprising an electromagnetic energy emitter located with respect to the housing to provide an electromagnetic energy output in a direction based on the orientation of the housing with respect to the support surface.

59. The housing of

claim 58

, wherein the electromagnetic energy emitter is light emitting diode.

60. The housing of

claim 59

, wherein the electromagnetic energy emitter comprises a number of light emitting diodes.

61. The housing of

claim 59

, wherein the light emitting diode emits infrared light.

62. The housing of

claim 57

, wherein the electromagnetic energy emitter provides infrared light.

63. A stereoscopic eyewear system comprising:

eyewear for generating a three dimension image from a viewed two dimensional image using a reference signal; and

at least two transmission sources for generating the reference signal,

wherein the reference signal coordinates the eyewear to the two dimensional image, and

wherein each of the at least two transmission sources transmits to an area not covered by another of the at least two transmission sources.

64. The system of

claim 63

, wherein the at least two transmission sources are wireless transmission sources.

65. The system of

claim 64

, wherein the at least two transmission sources are infrared transmission sources.

66. The system of

claim 63

, wherein the eyewear includes two shutters.

67. The system of

claim 66

, wherein the two shutters are non-rectangular.

68. The system of

claim 67

, wherein the two shutters each have five sides.

69. The system of

claim 67

, wherein each liquid crystal shutter has an maximum contrast axis at about 10°

from a top edge of the liquid crystal shutter.

70. The system of

claim 66

, wherein the two shutters are liquid crystal shutters.

71. The system of

claim 63

, wherein the at least two transmission sources are attachable to a surface such that a direction of transmission of the at least two transmission sources can be adjusted.

72. The system of

claim 71

, wherein the at least two transmission sources are housed in a curved housing at least partly covered with a material for attachment to another surface.

73. The system of

claim 72

, wherein the material for attachment to another surface is a hook and loop fabric material.

74. A stereoscopic eyewear system comprising:

eyewear for generating a three dimension image from a viewed two dimensional image using a reference signal, the eyewear including two shutters each having electrical connections;

a transmission line for conducting the reference signal to two shutters of the eyewear; and

at least one strain relief feature for relieving strain applied via the transmission line.

75. The system of

claim 74

, wherein the at least one strain relief feature includes a pair of guide bars.

76. The system of

claim 75

, further comprising an adhesive applied between the guide bars to secure the transmission line to the eyewear.

77. The system of

claim 75

, wherein the at least one strain relief feature further includes a transmission line loop.

78. The system of

claim 74

, wherein the at least one strain relief feature includes a transmission line loop.

79. The system of

claim 74

, wherein the transmission line is a cable that is enclosed in a cable way within the eyewear.

80. The system of

claim 74

, wherein the at least one strain relief feature relieves strain from the transmission line that might be applied to the electrical connections.

81. The system of

claim 74

, wherein the two shutters are non-rectangular.

82. The system of

claim 81

, wherein the two shutters each have five sides.

83. The system of

claim 81

, wherein the two shutters are liquid crystal shutters.

84. The system of

claim 81

, wherein each liquid crystal shutter has an maximum contrast axis at about 10°

from a top edge of the liquid crystal shutter.