An augmented reality device includes an eyeglass frame and a combiner mounted on the eyeglass frame. The combiner includes an inner surface and an outer surface disposed opposite the inner surface. The device further includes an active shutter lens mounted on the combiner and an image projector mounted on the eyeglass frame and configured to project display light to the combiner such that a first portion of the display light is emitted from the inner surface of the combiner and a second portion of the display light is emitted from the outer surface of the combiner. The device additionally includes a processor coupled to the image projector and the active shutter lens. The active shutter lens is configured to shield the display light emitted from the outer surface of the combiner. The combiner is configured to emit ambient light from the inner surface thereof.

According to one embodiment, a display device including a display panel which displays images, a polarization axis rotation element located between the display panel and an observer, and a polarizer located between the display panel and the polarization axis rotation element, wherein the polarization axis rotation element includes a first area and a second area different from the first area, and an orientation of a first polarization axis of a first polarization component transmitted through the first area is different from an orientation of a second polarization axis of a second polarization component transmitted through the second area.

Provided is a viewing angle control system and an image display device which are capable of controlling the viewing angle of a display screen in a longitudinal direction and improving the visibility in a specific lateral direction. The viewing angle control system includes a polarizer, and a light absorption anisotropic layer, in which the polarizer has an in-plane absorption axis in a film, an angle θ between a transmittance central axis of the light absorption anisotropic layer and a normal line of the film is in a range of 0.1° to 45°, and an angle φ between a direction in which the transmittance central axis of the light absorption anisotropic layer is orthographically projected onto the film surface and the absorption axis of the polarizer is 0° or greater and less than 85°, greater than 95° and less than 265°, or greater than 275° and 360° or less.

A transmittance-variable device is provided in the present application. The present application provides a transmittance-variable device, which can be applied to various applications without causing problems such as a crosstalk phenomenon, a rainbow phenomenon or a mirroring phenomenon, while having excellent transmittance-variable characteristics.

A see-through window display includes a display panel having a plurality of pixels and a drive circuit that applies a voltage according to input gray scale data to the plurality of pixels, in which the display panel includes a first substrate having a pixel electrode, a second substrate, a liquid crystal layer interposed between the first substrate and the second substrate, a first polarizer provided on the first substrate having a first polarization axis, and a second polarizer provided on the second substrate having a second polarization axis, and when a transmittance of each of the pixels when the drive circuit applies a minimum voltage to the pixel is set to TW and a transmittance of each of the pixels when the drive circuit applies a maximum voltage to the pixel is set to TB, the display panel has a normally white characteristic satisfying TW>TB.

A transmissive liquid crystal diffraction element includes a rod-like liquid crystal layer where a rod-like liquid crystal compound is aligned and a disk-like liquid crystal layer where a disk-like liquid crystal compound is aligned that are alternately laminated, in which each of the liquid crystal layers has a predetermined liquid crystal alignment pattern, rotation directions of optical axes in the liquid crystal alignment patterns are the same, single periods of the liquid crystal alignment patterns are the same, a thickness direction retardation |Rth| of each of the liquid crystal layers is 65 nm or less, and at an interface between the liquid crystal layers, longitudinal directions of the liquid crystal compounds match with each other.

A one-way glass with switching modes includes an absorbing layer located on a weak light side, a reflecting layer located on an intense light side, and a converting layer stacked between the absorbing layer and the reflecting layer. The absorbing layer absorbs first polarized light and allows second polarized light to pass through. The reflecting layer reflects the first polarized light and allows the second polarized light to pass through. Unpolarized light incident from the weak light side or from the intense light side is respectively converted into the polarized light. During the process of gradually adjusting the converting layer from a twisted state to a vertical state, rotated angles of polarization directions of the first polarized light and the second polarized light gradually decrease.

The invention provides a display device in which the tint is difficult to observe in a case where white display is visually confirmed from a front direction, and the tint is also difficult to observe at any azimuthal angle in a case where white display is visually confirmed from an oblique direction. A display device of the invention includes, from a viewing side, an anisotropic light absorbing layer and a self light emitting display element which emits at least red light, green light, and blue light, the self light emitting display element has a microcavity structure, the anisotropic light absorbing layer is formed of a composition containing a dichroic substance and a liquid crystal compound, the dichroic substance has a maximum absorption wavelength of 400 to 500 nm, and the anisotropic light absorbing layer satisfies a requirement represented by Expression (1) and a requirement represented by Expression (2),

1.50<Amax(60)/A(0)  Expression (1)

1.00≤Amax(60)/Amin(60)≤1.20.  Expression (2)

An electronic mirror device includes: a liquid crystal panel that displays an image; a linearly reflective polarizing layer that transmits a polarization component of incident light in a first direction and reflects a polarization component of the incident light in a second direction different from the first direction; a glass that transmits the incident light; and a PET film bonded to the glass. The linearly reflective polarizing layer is disposed between the liquid crystal panel and the PET film. The PET film contains polyethylene terephthalate and has a retardation value in a range of 2000 nm or more and 4000 nm or less. An angle between a slow axis of the PET film and a polarization reflection axis of the linearly reflective polarizing layer is 30 degrees or more and 60 degrees or less.

A composite film including a first polarizing film, at least one second polarizing film, and at least one first phase compensation film is provided. The first polarizing film has a first transmission axis. Each second polarizing film has a second transmission axis parallel to the first transmission axis. The at least one first phase compensation film is disposed between the first polarizing film and the at least one second polarizing film. Each first phase compensation film has a first optical axis. An orthographic projection of the first optical axis on the first polarizing film is parallel to an axial direction of the first transmission axis, and a first included angle between the first optical axis and the first polarizing film is greater than 0 degrees and less than 90 degrees. A display device is also provided.