Described herein is an optical device comprising an optical element, which is mounted on a carrier by means of a platform, in which the platform comprises a base and an elastic structure, wherein the base is connected to the optical element, the elastic structure connects the base and the carrier, the platform extends along an x-y plane defined by an x-direction and a y-direction, an actuator is arranged to apply a force to the base in a direction along the x-y-plane, the elastic structure is elastic in the x-direction and in the y-direction, and the base and the elastic structure are fabricated in a one-piece manner

A filter module and a projection apparatus are provided. The filter module includes a filter layer and a diffusion layer. The filter layer includes a first filter region and a second filter region, which respectively allow light having a first waveband and light having a second waveband to pass through. The diffusion layer is disposed on a side of the filter module opposite to the filter layer and includes a first diffusion portion with a first haze value and a second diffusion portion with a second haze value. The first diffusion portion is disposed corresponding to the first filter region and allows the light having the first waveband to pass through. The second diffusion portion is disposed corresponding to the second filter region and allows the light having the second waveband to pass through. The first haze value is different from the second haze value.

A method for processing a transparent cover plate for a flat body includes the following steps of providing the transparent cover plate having an outer side and an opposite inner side, wherein the transparent cover plate includes a structured area with a light-scattering structure, forming of at least one optical interference layer on a cover plate side including applying a mask to the transparent cover plate, wherein the mask does not cover a first area of a cover plate surface and covers a second area of the cover plate side, and the first area and the second area are arranged to overlap the structured area, the at least one optical interference layer is applied in overlap with the mask, and removing of the mask, whereby the at least one optical interference layer is also removed.

A base with a low-reflection film includes: a transparent base; a low-reflection film formed on a first principal surface of the transparent base; and a black printed part formed on a part of a second principal surface of the transparent base opposite to the first principal surface, in which a luminous reflectance R of the base with the low-reflection film with respect to incident light from the low-reflection film side is 2% or less in a region of the transparent base having the black printed part, and a ratio R.sub.1/R.sub.2 between a luminous reflectance R.sub.1 of a surface of the low-reflection film and a luminous reflectance R.sub.2 at an interface of the black printed part with the transparent base is ⅙ or more.

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems. The screens have a multi-layered structure configured to selectively reflect light in a tailored polarization state. Adjacent screens can be configured to selectively reflect light in orthogonal polarization states. The projector systems can be configured to project video onto their respective screens with light in a suitable polarization state. The screens can be further configured to selectively reflect light within a plurality of tailored spectral bands, the spectral bands being different for respective screens.

Presently described is a method for coupling an optical film to a substrate, laminated optical constructions comprising an optical film and an optical coupling layer disposed on a surface layer of the optical film, and coating compositions useful for optical an optical coupling layer. The coating compositions comprise at least 40 wt.-% inorganic nanoparticles having a refractive index of at least 1.85 and a polymeric silane surface treatment.

A polarizing plate and a liquid crystal display including the same are provided. A polarizing plate includes a polarizing film and a contrast-improving optical film sequentially stacked in the stated order. The contrast-improving optical film includes a contrast-improving layer including a first resin layer and a second resin layer facing the first resin layer. The second resin layer includes a patterned portion having optical patterns and a flat section between the optical patterns. The second resin layer satisfies Equation 1, and the polarizing plate has a contrast ratio gain of about 1.00 or more, as represented by Equation 2.

An optical deflector is used for optically scanning a target surface. The optical deflector includes: a mirror device configured to include a mirror capable of oscillating; and a casing configured to include a window unit for facing the mirror device, and to accommodate the mirror device. The window unit has a transmissive reflection structure in which part of an incident beam is caused to transmit through the window unit toward the mirror, and at least part of a remainder of the incident beam is reflected by the window unit to a direction separated from an optical deflection range that is deflected by the mirror device, and the transmissive reflection structure includes a diffraction grating provided on one of a front surface and a back surface of the window unit.

An image display system includes a projector, a transparent screen, and a polarization adjuster. The projector projects image light. The transparent screen diffuses the image light that has been projected, to display an image. The polarization adjuster adjusts the image light that is to enter the transparent screen so that the image light is p-polarized.

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems. The screens have a multi-layered structure configured to selectively reflect light in narrow wavelength bands. Each screen is configured to strongly diffusely reflect light in narrow wavelength bands that are different from the wavelength bands reflected by other screens in the immersive display system. Projector systems can be configured to provide light to associated screens in the narrow wavelength bands reflected by those screens.