The present application relates to a light modulating device and an eyewear. The present application can provide a light modulation device having both excellent mechanical properties and optical properties by applying a polymer film that is also optically anisotropic and mechanically anisotropic to a substrate.

A display panel and a display apparatus are provided. The display panel includes a display substrate and a birefringence layer disposed on a display surface of the display substrate. The birefringence layer includes a first region; the first region is disposed at least in the display region; a plurality of repeating units are sequentially disposed in the first region along a first direction parallel to the display surface of the display substrate, and one repeating unit includes at least two refractive regions that are sequentially arranged along the first direction to form. Refractive indexes of the at least two refractive regions are different from each other. An interface between the at least two refractive regions forms an acute angle with the display surface of the display substrate. A width of the repeating unit is smaller than a wavelength of light emitted from the display panel.

A switchable view angle control device for a privacy view display system includes an electrically switchable view angle control LCD that is operable in a first state and a second state; a front polarizer located on a viewing side of the switchable view angle control LCD; and a polarized light source located on a non-viewing side of the switchable view angle control LCD that emits polarized light. When the switchable view angle control LCD in the first state, the view angle control device operates in a narrow angle view mode in which off-axis polarized light from the polarized light source is changed by the switchable view angle control LCD so that the off-axis light is absorbed by the front polarizer, and on-axis light passes through the switchable view angle control LCD and the front polarizer. When the switchable view angle control LCD is in the second state, the view angle control device operates in a wide angle view mode in which the polarized light from the polarized light source is scattered by the switchable view angle control LCD and passes through the front polarizer.

A head-mounted display, or other near-to-eye display, incorporates optics that include a spatially-varying retarder (SVR). The SVR may include one or more layers of birefringent material. Light that enters and exits the SVR experiences a change in polarization where the phase of the light is modified by amounts that are different for different portions of the SVR. Focal length of light of an image generated by a pixelated display device is shortened by the optics so that the image can be focused onto a user's eye, which is relatively close to the pixelated display device.

The present application relates to a light modulation device and a use thereof. The present application can provide a light modulation device having both excellent mechanical properties and optical properties by applying a polymer film that is also optically anisotropic and mechanically anisotropic to a substrate.

A device includes a number of grating stages having a liquid crystal layer disposed between at least two substrates, where at least one is coated with a photo-alignment layer and transparent electrodes. Each grating stage may be switchably responsive to a voltage, with grating periods of each grating stage selected such that, when the voltage is applied to a grating stage and a laser beam is passed therethrough, optical energy from the laser beam in plus and minus first orders is deflected toward sides of the grating stage and optical energy from a zero order of the laser beam is allowed to pass through the grating stage. A polarization state of the laser beam may be maintained from an input through an output. Each grating stage may include a thickness selected to achromatize the laser beam through the grating stages.

The optical element is an optical element comprising a first optically anisotropic layer which is a cured layer of a liquid crystal composition containing a first disk-like liquid crystal compound, in which the optical element has a liquid crystal alignment pattern in which an optical axis of the first disk-like liquid crystal compound is parallel to a surface of the first optically anisotropic layer, the first optically anisotropic layer is disposed along at least one direction in a plane of the first optically anisotropic layer, and orientation of the optical axis of the first disk-like liquid crystal compound rotationally changes continuously, and the orientation of the optical axis rotates by 180 with a period of 0.5m to 5m.

A 3D display device comprises first and second substrates disposed opposite one another; a liquid crystal layer; a color filter layer between the first substrate and the liquid crystal layer, a plurality of pixel regions arranged in an array being formed on the color filter layer, and each of the plurality of pixel regions comprising first and second sub-pixels; and a first polarizer on a side of the first substrate, the first polarizer comprising a plurality of wire grid polarizers arranged in an array, two adjacent ones of the plurality of wire grid polarizers comprising a plurality of columns of first sub-wire grid polarizers and second sub-wire grid polarizers which are alternately arranged with each other. An orthographic projection of each column of the first and second sub-wire grid polarizers on the pixel regions is overlapped with at least one column of first sub-pixels and second sub-pixels, respectively.

An optically anisotropic layered body including a first optically anisotropic layer and a second optically anisotropic layer, wherein the first optically anisotropic layer satisfies 220 nm<Re1(590)<330 nm, Re1(450)/Re1(550)1.0, Re1(650)/Re1(550)1.0, and 0.95<NZ1<2.00, and the second optically anisotropic layer satisfies 110 nm<Re2(590)<165 nm, Re2(450)/Re2(550)1.0, Re2(650)/Re2(550)1.0, and 1.5NZ20.00.

A display device, a driving method thereof and a display system are disclosed. The display device includes a display panel, a polarizer disposed on a side, where a light emitting surface of the display panel is located, of the display panel, and a phase retarder disposed on a side, where a light emitting surface of the polarizer is located, of the polarizer. The display region of the display panel includes a peep-proof area and a compensation area; the phase retarder includes a first phase retarder and a second phase retarder respectively corresponding to the peep-proof area and the compensation area; both the first and second phase retarder are a quarter-wave phase retarder; and the first and second phase retarder are configured to respectively convert light that is incident into the first phase retarder and the second phase retarder into polarized light with opposite rotation directions, in operation.