Provided are: a polarizing plate comprising a polarizer, and a protective layer formed on at least one surface of the polarizer, and an optical display device comprising same. The polarizing plate comprises a first area and second area which are in an image display area, wherein the first area and second area have mutually different light transmittances at the same wavelength, the first area has a light transmittance of approximately 50% to 80%, and the first area has a color value a* of approximately −13 to 2, and a color value b* of approximately 1 to 35.

A polarization filter effect is prevented from being changed due to a change in orientation of an imaging apparatus. An imaging apparatus according to the present technique includes an imaging section including a first pixel capable of receiving light in a first polarization direction and a second pixel capable of receiving light in a second polarization direction different from the first polarization direction, a detection section detecting an orientation of the imaging section, and an image generating section generating, on the basis of signals for the first and second pixels, an image corresponding to a polarization direction corresponding to a detection result from the detection section. Thus, as an image corresponding to a particular polarization direction, that is, an image corresponding to application of a polarization filter effect, an image can be generated that corresponds to a polarization direction corresponding to a change in the orientation of the imaging section.

A folded-path optical component usable as an ocular lens in a near-eye display is disclosed. The folded-path optical component includes a cavity formed by a pair of spaced apart coaxial curved reflective polarizers, and a partial reflector in the cavity for splitting an impinging light beam to propagate along two optical paths ending at an exit pupil of the optical component. Each optical path includes a reflection from one of the reflective polarizers and a transmission through the other one of the reflective polarizers.

A waveguide display for use in a near-eye display system includes a waveguide stack having at least one waveguide substrate, an input coupler coupling light into the waveguide substrate and an optical arrangement that includes a birefringent reflective polarizer, a mirror and a polarization state converting element configured to convert light in a linear polarization state to a circular polarization state and to convert light in a circular polarization state to a linear polarization state. The mirror is arranged to receive light from the polarization state converting element and reflect the light back to the polarization state converting element. The optical arrangement causes a transmission path of light that traverses the waveguide stack a first time to be folded back through the waveguide stack such that at least a portion of light not coupled into the waveguide substrate is caused to traverse the waveguide stack a plurality of additional times.

An optical lens device includes an optical substrate layer, an etched miniature-structure polarization layer and an etched miniature surface structure. The optical substrate layer is provided with a first surface and a second surface and a ray of light passes through the optical substrate layer. The etched miniature-structure polarization layer is provided on the first surface or the second surface of the optical substrate layer. The etched miniature surface structure is etched to form the miniature-structure etched polarization layer and provides a characteristic of optical polarization in the etched miniature-structure polarization layer. The etched miniature surface structure of the etched miniature-structure polarization layer provides an effect of optical polarization to the ray of light while passing through it.

A polarizer stack including an absorbing polarizer and a multilayer polymeric reflective polarizer bonded together is described. The absorbing polarizer has a first block axis and the reflective polarizer has a second block axis substantially parallel to the first block axis. The reflective polarizer may be substantially free of micro-wrinkling when the polarizer stack adhered to a glass layer is heated at 95° C. for 100 hours.

A monomer represented by Chemical Formula 1: ##STR00001##
wherein, in Chemical Formula 1, R.sup.1, R.sup.2, A.sup.1, A.sup.2, L.sup.1, L.sup.2, o, p, q, and r are the same as defined in the detailed description.

Provided are an imaging apparatus and a method capable of capturing a high-quality multi spectral image. The imaging apparatus includes: an optical system that has three or more aperture regions at a pupil position or near the pupil position, each of the aperture regions being provided with a different combination of a polarizing filter and a bandpass filter such that the aperture region transmits light having a combination of a different polarization angle and a different wavelength range; an image sensor in which three or more types of pixels that receive light having different polarization angles are arranged two-dimensionally; and a processor that performs interference removal processing on a signal output from the image sensor and generates an image signal for each of the aperture regions. In a case where the optical system has three or more types of the polarizing filters and the polarizing filters are arranged in an order of the polarization angles, at least one of differences in the polarization angles of the adjacent polarizing filters is different from the others.

An optical film includes a polarizer. The polarizer includes a base layer, and a material of the base layer is obtained by dyeing a base material with a dye. The base material includes a polyvinyl alcohol material, and the dye is selected from blue dichroism organic dyes.

An optical lens device includes an optical substrate layer, an optical polarization layer and a miniature surface structure. The optical substrate layer has a first surface and a second surface and rays of light passes through the optical substrate layer. The optical polarization layer is provided on the first surface or the second surface of the optical substrate layer. The miniature surface structure is physically processed to form the optical polarization layer and provides a characteristic of optical polarization in the optical polarization layer. The miniature surface structure of the optical polarization layer provides an optical polarization effect to the rays of light while passing through it.