IMAGE DISPLAY APPARATUS
First Claim
Patent Images
1. An image display apparatus comprising:
- an image forming device including a plurality of pixels arranged in a two-dimensional matrix;
a collimating optical system configured to convert light emitted from each of the pixels in the image forming devices into parallel light; and
an optical device on which the parallel light is incident from the collimating optical system, in which the parallel light is guided, and from which the parallel light is emitted,wherein the optical device includesa light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection,first deflecting means configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, andsecond deflecting means configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate,wherein the first deflecting means and the second deflecting means are provided in the light guide plate, andwherein light having one wavelength emitted from at least one of the pixels satisfies the following condition
2t·
sin θ
−
2≦
WY≦
2t·
sin θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate.
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Abstract
An image display apparatus includes an image forming device, a collimating optical system, and an optical device. The optical device includes a light guide plate, a first deflecting member that deflects light incident on the light guide plate, and a second deflecting member that deflects the light, which propagates in the light guide plate by total reflection, a plurality of times. The first and second deflecting members are provided in the light guide plate. Light having one wavelength emitted from at least one pixel satisfies the following condition:
2t·sin θ−2≦WY≦2t·sin θ+2
where an axial direction of the light guide plate is the Y-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ represents the total reflection angle.
138 Citations
24 Claims
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1. An image display apparatus comprising:
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an image forming device including a plurality of pixels arranged in a two-dimensional matrix; a collimating optical system configured to convert light emitted from each of the pixels in the image forming devices into parallel light; and an optical device on which the parallel light is incident from the collimating optical system, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, first deflecting means configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and second deflecting means configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting means and the second deflecting means are provided in the light guide plate, and wherein light having one wavelength emitted from at least one of the pixels satisfies the following condition
2t·
sin θ
−
2≦
WY≦
2t·
sin θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate. - View Dependent Claims (2, 3)
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4. An image display apparatus comprising:
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a light source; a collimating optical system configured to convert light emitted from the light source into parallel light; scanning means configured to scan the parallel light emitted from the collimating optical system; a relay optical system configured to relay the parallel light scanned by the scanning means; and an optical device on which the parallel light from the relay optical system is incident, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, first deflecting means configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and second deflecting means configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting means and the second deflecting means are provided in the light guide plate, and wherein light having one wavelength emitted from at least one of the pixels satisfies the following condition;
2t·
sin θ
−
2≦
WY≦
2t·
sin θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate. - View Dependent Claims (5, 6)
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7. An image display apparatus comprising:
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an image forming device including a plurality of pixels arranged in a two-dimensional matrix; a collimating optical system configured to convert light emitted from each of the pixels in the image forming device into parallel light; and an optical device on which the parallel light is incident from the collimating optical system, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, first deflecting means configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and second deflecting means configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting means and the second deflecting means are provided on a surface of the light guide plate, and wherein the following condition is satisfied;
2t·
tan θ
−
2≦
WY≦
2t·
tan θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An image display apparatus comprising:
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a light source; a collimating optical system configured to convert light emitted from the light source into parallel light; scanning means configured to scan the parallel light emitted from the collimating optical system; a relay optical system configured to relay the parallel light scanned by the scanning means; and an optical device on which the parallel light from the relay optical system is incident, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, first deflecting means configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and second deflecting means configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting means and the second deflecting means are provided on a surface of the light guide plate, and wherein the following condition is satisfied
2t·
tan θ
−
2≦
WY≦
2t·
tan θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WYrepresents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An image display apparatus comprising:
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an image forming device including a plurality of pixels arranged in a two-dimensional matrix; a collimating optical system configured to convert light emitted from each of the pixels in the image forming devices into parallel light; and an optical device on which the parallel light is incident from the collimating optical system, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, a first deflecting member configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and a second deflecting member configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting member and the second deflecting member are provided in the light guide plate, and wherein light having one wavelength emitted from at least one of the pixels satisfies the following condition
2t·
sin θ
−
2≦
WY≦
2t·
sin θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate.
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22. An image display apparatus comprising:
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a light source; a collimating optical system configured to convert light emitted from the light source into parallel light; a scanning member scanning the parallel light emitted from the collimating optical system; a relay optical system configured to relay the parallel light scanned by the scanning member; and an optical device on which the parallel light from the relay optical system is incident, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, a first deflecting member configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and a second deflecting member configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting member and the second deflecting member are provided in the light guide plate, and wherein light having one wavelength emitted from at least one of the pixels satisfies the following condition;
2t·
sin θ
−
2≦
WY≦
2t·
sin θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate.
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23. An image display apparatus comprising:
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an image forming device including a plurality of pixels arranged in a two-dimensional matrix; a collimating optical system configured to convert light emitted from each of the pixels in the image forming device into parallel light; and an optical device on which the parallel light is incident from the collimating optical system, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, a first deflecting member configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and a second deflecting member configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting member and the second deflecting member are provided on a surface of the light guide plate, and wherein the following condition is satisfied;
2t·
tan θ
−
2≦
WY≦
2t·
tan θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate.
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24. An image display apparatus comprising:
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a light source; a collimating optical system configured to convert light emitted from the light source into parallel light; a scanning member scanning the parallel light emitted from the collimating optical system; a relay optical system configured to relay the parallel light scanned by the scanning member; and an optical device on which the parallel light from the relay optical system is incident, in which the parallel light is guided, and from which the parallel light is emitted, wherein the optical device includes a light guide plate from which the incident light is emitted after propagating in the light guide plate by total reflection, a first deflecting member configured to deflect the light incident on the light guide plate so that the incident light is totally reflected in the light guide plate, and a second deflecting member configured to deflect the light, which propagates in the light guide plate by total reflection, a plurality of times so as to emit the light from the light guide plate, wherein the first deflecting member and the second deflecting member are provided on a surface of the light guide plate, and wherein the following condition is satisfied
2t·
tan θ
−
2≦
WY≦
2t·
tan θ
+2where an axial direction of the light guide plate is the Y-direction, a normal direction of the light guide plate is the X-direction, WY represents the width in the Y-direction of the light incident on the light guide plate, t represents the thickness of the light guide plate, and θ
represents the incident angle of the light, which is totally reflected in the light guide plate, on an inner surface of the light guide plate.
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Specification
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Current AssigneeSony Corporation (Sony Group Corp.)
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Original AssigneeSony Corporation (Sony Group Corp.)
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InventorsMukawa, Hiroshi
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current362/97.100
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CPC Class CodesG02B 2027/0112 comprising device for gener...G02B 2027/0118 comprising devices for impr...G02B 2027/0174 holographicG02B 26/10 Scanning systemsG02B 26/101 with both horizontal and ve...G02B 27/0081 with means for altering, e....G02B 27/0172 characterised by optical fe...G02B 5/18 Diffraction gratings hologr...G02B 5/32 Holograms used as optical e...G02B 6/0033 Means for improving the cou...G02B 6/0055 Reflecting element, sheet o...
