| 摘要 |
A polarizing plate ( 11 ) having a rightward and upward polarization angle is provided on a display screen ( 10 ), and a ½-wave plate ( 21 ) whose optical axis is at 45 deg. to said polarization angle is applied to said right half. A ½-wave plate ( 22 ) whose optical axis is orthogonal to that of said ½-wave plate ( 21 ) is applied to a right-eye side of a polarizing plate ( 12 ) (glasses) which has a leftward and upward polarization angle and which is to be worn by a viewer. Thus, images for left and right eyes can be viewed by left and right eyes through the ½-wave plates. The image for a right eye ( 13 <SUB>R</SUB>) that should not enter a left eye ( 14 <SUB>L</SUB>) is completely blocked by a polarization angle orthogonal thereto. The image for a left eye ( 13 <SUB>L</SUB>) that should not enter a right eye ( 14 <SUB>R</SUB>) is completely blocked to prevent crosstalk between the left and right images because the optical axes of the two phase difference plates ( 21, 22 ) are in an orthogonal state in which the coordinate axis is rotated 90 deg. to cancel the phase difference to realize an orthogonal light-blocking state of the polarizing plates ( 11, 12 ).
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