Observe tracking autostereoscopic display
First Claim
1. A display device for an autostereoscopic display apparatus, the display device comprising:
- a spatial light modulator comprising an array of pixels;
a first lens array and a second lens array, each aligned with the spatial light modulator and operable to direct light from spatially multiplexed sub-arrays of pixels into an array of at least three optical windows in a window plane, the optical windows of the first lens array being spatially offset from the optical windows of the second lens array; and
a lens switching arrangement capable of causing the lens arrays to switch between operation in a first mode in which the first lens array operates and the second lens array has substantially no optical effect and a second mode in which the first lens array has substantially no optical effect and the second lens array operates.
12 Assignments
0 Petitions
Accused Products
Abstract
A spatially multiplexed autostereoscopic display is arranged to provide landscape and portrait operation. Multiple optical windows may be provided by spatial and temporal multiplexing techniques. A fast response lens array pair is aligned with a fast response spatial light modulator, and synchronized to provide first and second sets of images with first and second respective directionalities to provide first and second sets of respective optical windows. The first and second sets of optical windows may each comprise two or more optical windows in each viewing lobe. The optical windows may be arranged with an inclination to the vertical of 25 degrees to 65 degrees. An observer tracking system may be arranged to direct left and right eye image data to the left and right eyes of an observer, respectively, for landscape and portrait orientations of the display.
72 Citations
32 Claims
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1. A display device for an autostereoscopic display apparatus, the display device comprising:
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a spatial light modulator comprising an array of pixels; a first lens array and a second lens array, each aligned with the spatial light modulator and operable to direct light from spatially multiplexed sub-arrays of pixels into an array of at least three optical windows in a window plane, the optical windows of the first lens array being spatially offset from the optical windows of the second lens array; and a lens switching arrangement capable of causing the lens arrays to switch between operation in a first mode in which the first lens array operates and the second lens array has substantially no optical effect and a second mode in which the first lens array has substantially no optical effect and the second lens array operates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An autostereoscopic display apparatus comprising:
a display device for an autostereoscopic display apparatus comprising; a spatial light modulator comprising an array of pixels; a first lens array and a second lens array, each aligned with the spatial light modulator and operable to direct light from spatially multiplexed sub-arrays of pixels into an array of at least three optical windows in a window plane, the optical windows of the first lens array being spatially offset from the optical windows of the second lens array; and a lens switching arrangement capable of causing the lens arrays to switch between operation in a first mode in which the first lens array operates and the second lens array has substantially no optical effect and a second mode in which the first lens array has substantially no optical effect and the second lens array operates, wherein the array of pixels are arranged in an aperture with a shape having two perpendicular axes of mirror symmetry and the first lens array and the second lens array are each arranged to direct light from spatially multiplexed sub-arrays of pixels into respective optical windows in a window plane having different positions and extending at an angle in a range from 25 to 65 degrees relative to one of said axes of the shape of the aperture. - View Dependent Claims (14, 15, 16)
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17. An observer tracking autostereoscopic display comprising:
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a first lens array and a second lens array; a lens switching apparatus arranged to switch the first lens array to operate in a first phase and the second lens array to operate in a second phase; a spatial light modulator arranged to display image data in first and second phases and comprising an array of pixels aligned with the first and second lens arrays; wherein the first lens array cooperates with the array of pixels to produce an array of at least three viewing windows, and the second lens array cooperates with the array of pixels to produce an array of at least three viewing windows; and wherein the first and second arrays of viewing windows are spatially interlaced. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An autostereoscopic display apparatus, comprising:
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a display device comprising an array of pixels arranged in an aperture with a shape having two perpendicular axes of mirror symmetry and a parallax element arranged to direct light from spatially multiplexed sub-arrays of pixels into respective optical windows in a window plane having different positions and extending at an angle in a range from 25 to 65 degrees relative to an axis of the shape of the aperture; a sensor system arranged to detect the position of an observer in two dimensions across the display device and the orientation of the view of the observer; and a control system arranged to control the display device to display left and right eye images on the sub-arrays of pixels so as to direct the left and right eye images to optical windows corresponding to the left and right eyes of the observer, in dependence on the detected position of the observer and on the detected orientation of the view. - View Dependent Claims (29, 30, 31)
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32. An autostereoscopic display apparatus comprising:
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a display device for an autostereoscopic display apparatus comprising; a spatial light modulator comprising an array of pixels; a first lens array and a second lens array, each aligned with the spatial light modulator and operable to direct light from spatially multiplexed sub-arrays of pixels into an array of at least three optical windows in a window plane, the optical windows of the first lens array being spatially offset from the optical windows of the second lens array; and a lens switching arrangement capable of causing the lens arrays to switch between operation in a first mode in which the first lens array operates and the second lens array has substantially no optical effect and a second mode in which the first lens array has substantially no optical effect and the second lens array operates; a sensor system arranged to detect the position of an observer relative to the display device; and a control system arranged to control the lens switching arrangement to switch the lens arrays to cause temporally multiplexed operation in the first mode and second mode and synchronously to cause the display device to display left and right eye images on the sub-arrays of pixels so as to direct the left and right eye images to optical windows corresponding to the left and right eyes of the observer, in dependence on the detected position of the observer.
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Specification