Optical device and method of driving the same

A method of driving a optical device, comprising:

• displaying first and second images on first and second areas of a display device during a first period, respectively;
• outputting the first and second images as first polarized light during the first period;
• reflecting a first image of the first polarized light through a first polarizing mirror during the first period;
• displaying the first and second images on the first and second areas of the display device during a second period, respectively;
• outputting the first and second images as second polarized light during the second period;
• and
• reflecting a second image of the second polarized light through a second polarizing mirror during the second period.

A method of driving a optical device, comprising:

• displaying a first image on a first area of a display device during a first period;
• outputting the first image as first polarized light during the first period;
• reflecting a first image of the first polarized light through a first polarizing mirror during the first period;
• displaying a fifth image on the first area of the display device during a second period;
• outputting the fifth image as second polarized light during the second period;
• and
• reflecting a fifth image of the second polarized light through a second polarizing mirror during the second period.