A rear-view mirror includes a body, wherein the body includes a first polarizer, a dimming layer, a transflective polarizer, and a display component which are sequentially laminated. The dimming layer is configured to adjust a polarization direction of light passing through the dimming layer. By adjusting the polarization direction of the light passing through the dimming layer via the dimming layer, the reflectivity and transmittance of the transflective polarizer to the light can be changed, such that both an anti-glare function and a display function of the rear-view mirror can be achieved.

A projection system includes a first optical system including a plurality of lenses and a deflector, and a second optical system including an optical element having a concave reflection surface and disposed at the enlargement side of the first optical system. The deflector is disposed in one air gap of a plurality of air gaps provided between the lenses adjacent to each other in the first optical system, the air gap having the largest axial inter-surface distance in the first optical system. The first optical system includes a first section located at the reduction side of the deflector and a second section located at the enlargement side of the deflector. A first optical axis section of the first section and a second optical axis section of the second section intersect each other. The second section includes three or more lenses. The second section is shorter than the first section.

The present disclosure relates to a mirror display device, an image display method, an electronic device and a storage medium are provided and related to the technical field of optics. The mirror display device comprises: an optical switch array (101) comprising multiple optical switches, the optical switches being used for obtaining, in a first state, a first light beam based on incident light; a reflection layer (102) arranged on one side of the optical switch array (101) and used for receiving and reflecting the first light beam incident to the reflection layer (102); and a control module (103) for determining a reflection region and a non-reflection region, controlling the optical switch corresponding to the reflection region to be in the first state, and controlling the optical switch corresponding to the non-reflection region to be in a second state that is different from the first state.

A transparent display panel and a control method and apparatus therefor, a display system, and a computer-readable storage medium. The transparent display panel includes: a liquid crystal panel (11), and a transflective optical film layer (12) disposed on one side of the liquid crystal panel (11), wherein a plurality of microstructures (31) for scattering incident light rays are provided in the transflective optical film layer (12), in order to present a projected image. The transparency level of the transparent display panel is determined by acquiring the ambient light intensity of the transparent display panel or a grayscale average of a projected image at each first region, and the light transmittance level of the liquid crystal panel is adjusted according to the transparency level, thereby improving the projection display effect.

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 is notably directed to a transflective display device. The device comprises a set of pixels, wherein each of the pixels comprises a portion of bi-stable, phase change material, hereafter a PCM portion, having at least two reversibly switchable states, in which it has two different values of refractive index and/or optical absorption. The device further comprises one or more spacers, optically transmissive, and extending under PCM portions of the set of pixels. One or more reflectors extend under the one or more spacers. An energization structure is in thermal or electrical communication with the PCM portions, via the one or more spacers. Moreover, a display controller is configured to selectively energize, via the energization structure, PCM portions of the pixels, so as to reversibly switch a state of a PCM portion of any of the pixels from one of its reversibly switchable states to the other. A backlight unit is furthermore configured, in the device, to allow illumination of the PCM portions through the one or more spacers. The backlight unit is controlled by a backlight unit controller, which is configured for modulating one or more physical properties of light emitted from the backlight unit. The invention is further directed to related devices and methods of operation.

An optical element is provided. The optical element includes an optical film including a birefringent material having a chirality. Optically anisotropic molecules of the birefringent material disposed adjacent a first surface of the optical film are configured with a first pretilt angle in a range of greater than 10° and less than 80°, or in a range of greater than −80° and less than −10°. Optically anisotropic molecules of the birefringent material disposed adjacent a second surface of the optical film opposing the first surface are configured with a second pretilt angle in the range of greater than 10° and less than 80°, or in the range of greater than −80° and less than −10°.

Embodiments of the disclosure provide a display panel and a display device. The display panel includes a substrate, a plurality of light emitting elements and at least one transmissive-reflective module, where the light emitting elements are arranged on the substrate; each of the light emitting elements includes a first electrode, a light emitting functional layer and a second electrode arranged along a direction vertical to the substrate and away from the substrate; the at least one transmissive-reflective module is arranged on a side, close to the substrate, of the first electrode of at least one of the light emitting elements, and/or on a side, away from the substrate, of the second electrode of at least one of the light emitting elements; the transmissive-reflective module is configured to switch between a transmissive state and a reflective state.

A display device includes a first region and a second region adjacent to the first region. A display element included in the first region has a function of reflecting visible light and a function of emitting visible light. A display element included in the second region has a function of emitting visible light. In an electronic device including the display device, the first region is located on a first surface (e.g., top surface) on which a main image is displayed, and the second region is located on a second surface (e.g., side surface) on which an auxiliary image is displayed.

An embodiment of the present invention discloses a reflective type display device, relating to the technical field of display. The liquid crystal display device is relatively thin and light, with low energy consumption. The reflective type display device comprises a polarizer, a transparent first substrate, a liquid crystal molecular layer and a second substrate arranged in sequence; wherein the reflective type display device further comprises: a selective reflecting layer located between the liquid crystal molecular layer and the second substrate; the selective reflecting layer reflects light with wavelength within a specific wavelength range.