Image display apparatus, image generating device, and transmissive spatial light modulating device
First Claim
1. An image display apparatus comprising:
- (A) an image generating device including a light source and a transmissive spatial light modulating device formed with pixels arranged in a two-dimensional matrix; and
(B) a light guiding unit that guides light from the image generating device and emits the light toward an eye of a viewer,whereinthe transmissive spatial light modulating device includes, on a light emitting side thereof, a microlens array including a microlens corresponding to each pixel, andwhen an incident solid angle of light entering a pixel from the light source is assumed to be ω
in, and an emitting solid angle of light that passes through the pixel and is emitted from the microlens corresponding to the pixel is assumed to be ω
out, ω
out>
ω
in is satisfied;
wherein when a point at which light emitted from center of the image generating device enters the light guiding unit is assumed to be a point O, a normal in a portion of the light guiding unit passing through the point O is assumed to be an X-axis, an axis line of the light guiding unit in the portion of the light guiding unit passing through the point O is assumed to be a Y-axis, an optical axis of the light that is emitted from the center of the image generating device and enters the light guiding unit at the point O is assumed to be a ζ
-axis, and a virtual plane including the ζ
-axis and the Y-axis is assumed to be a ζ
-Y plane, light that is emitted from the image generating device and enters the light guiding unit at a point (0, Y1, Z1) forms an angle θ
Z with the ζ
-Y plane and forms an angle θ
Y with an X-Z plane, andin a case of Z1≠
0, θ
Z≠
θ
Y is satisfied,a value of θ
Y is constant, regardless of a value of Y1, and,as an absolute value of Z1 increases, an absolute value of θ
Z increases.
1 Assignment
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Accused Products
Abstract
An image display apparatus 100 includes: (A) an image generating device 111 including a light source 160 and a transmissive spatial light modulating device 150 formed with pixels 152 arranged in a two-dimensional matrix; and (B) a light guiding unit 120 that guides light from the image generating device 111, and emits the light toward an eye 21 of a viewer 20, wherein the transmissive spatial light modulating device 150 includes, on a light emitting side thereof, a microlens array 170 including a microlens corresponding to each pixel, and when an incident solid angle of light entering a pixel from the light source 160 is assumed to be ωin, and an emitting solid angle of light that passes through the pixel and is emitted from the microlens corresponding to the pixel is assumed to be ωout, ωout>ωin is satisfied.
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Citations
9 Claims
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1. An image display apparatus comprising:
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(A) an image generating device including a light source and a transmissive spatial light modulating device formed with pixels arranged in a two-dimensional matrix; and (B) a light guiding unit that guides light from the image generating device and emits the light toward an eye of a viewer, wherein the transmissive spatial light modulating device includes, on a light emitting side thereof, a microlens array including a microlens corresponding to each pixel, and when an incident solid angle of light entering a pixel from the light source is assumed to be ω
in, and an emitting solid angle of light that passes through the pixel and is emitted from the microlens corresponding to the pixel is assumed to be ω
out, ω
out>
ω
in is satisfied;wherein when a point at which light emitted from center of the image generating device enters the light guiding unit is assumed to be a point O, a normal in a portion of the light guiding unit passing through the point O is assumed to be an X-axis, an axis line of the light guiding unit in the portion of the light guiding unit passing through the point O is assumed to be a Y-axis, an optical axis of the light that is emitted from the center of the image generating device and enters the light guiding unit at the point O is assumed to be a ζ
-axis, and a virtual plane including the ζ
-axis and the Y-axis is assumed to be a ζ
-Y plane, light that is emitted from the image generating device and enters the light guiding unit at a point (0, Y1, Z1) forms an angle θ
Z with the ζ
-Y plane and forms an angle θ
Y with an X-Z plane, andin a case of Z1≠
0, θ
Z≠
θ
Y is satisfied,a value of θ
Y is constant, regardless of a value of Y1, and,as an absolute value of Z1 increases, an absolute value of θ
Z increases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification