Abstract: An optical element and a stereoscopic image display device are provided. The optical element is a light-dividing element, for example an element that can divide incident light into at least two kinds of light having different polarized states. Therefore, the optical element can be used to realize a stereoscopic image.

Abstract: An optical device is provided. The optical device according to one embodiment may be a light-dividing device, for example, a device that can divide incident light into at least two kinds of light having different polarization states. For example, the optical device can be used to realize a stereoscopic image.

Abstract: The present invention relates to a polarizer in which contents of zinc, boron, and potassium are controlled to be within a certain range, a polarizing plate, and an image display device having excellent durability and heat resistance, and a method of manufacturing the polarizer. In one embodiment, the present invention provides a polarizer, in which the value of zinc content (wt. %)×boron content (wt. %)/potassium content (wt. %) is 0.1 to 4.0, boron content is 1.0 wt. % to 5.0 wt. % and potassium content is 0.3 wt. % to 2.0 wt. %, based on the weight of the polarizer, a polarizing plate and an image display device including the same. Further, the present invention provides a method of manufacturing a polarizer, the method including at least a dyeing process, a cross-linking process, a stretching process and a washing process.

Abstract: A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer.