The disclosed electronic shutter may include (1) an optical structure including a medium through which light from an environment passes to a lens of a camera for capturing an image of the environment; and (2) a controlling circuit that (a) detects a first condition of a signal, where the first condition indicates an activation of the camera, (b) controls, in response, to the first condition, the optical structure such that the medium attains a transparent optical state, (c) detects a second condition of the signal, where the second condition indicates a deactivation of the camera, and (d) controls, in response to the second condition, the optical structure such that the medium attains a non-transparent optical state in a manner that prevents visual detection of the lens from the environment. Various other methods and systems are also disclosed.

A light modulation element that can vary between a bright transparent mode and a dark scattering mode is provided. The light modulation element has a first light modulation layer and a second light modulation layer comprising nematic liquid crystals and a dichroic dye in a scattering mode when a voltage is applied. The first light modulation layer and the second light modulation layer are disposed to overlap each other. The light modulation element has an improved contrast ratio and haze-variable characteristics, without precipitation of dichroic dyes and an increase in power consumption.

A light modulation element that can vary between a bright transparent mode and a dark scattering mode is provided. The light modulation element has a first light modulation layer and a second light modulation layer comprising nematic liquid crystals and a dichroic dye in a scattering mode when a voltage is applied. The first light modulation layer and the second light modulation layer are disposed to overlap each other. The light modulation element has an improved contrast ratio and haze-variable characteristics, without precipitation of dichroic dyes and an increase in power consumption.

A liquid crystal cell, a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.

A liquid crystal cell and a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.

A liquid crystal cell, a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.

The present application relates to a novel liquid crystal compound and a use thereof. The novel liquid crystal compounds of the present application can exhibit a smectic A phase over a wide temperature range. The novel liquid crystal compounds of the present application can be usefully used in the technical fields to which smectic A liquid crystals can be applied, for example, bistable devices.

A liquid crystal cell and a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.

The disclosed electronic shutter may include (1) an optical structure including a medium through which light from an environment passes to a lens of a camera for capturing an image of the environment; and (2) a controlling circuit that (a) detects a first condition of a signal, where the first condition indicates an activation of the camera, (b) controls, in response, to the first condition, the optical structure such that the medium attains a transparent optical state, (c) detects a second condition of the signal, where the second condition indicates a deactivation of the camera, and (d) controls, in response to the second condition, the optical structure such that the medium attains a non-transparent optical state in a manner that prevents visual detection of the lens from the environment. Various other methods and systems are also disclosed.

A device (100) for speckle reduction, comprising an optical cell (110) and a controller (130). The optical cell (110) comprises a first and second cell wall (121, 122) spaced apart by a gap, and a liquid crystal composition (114) in the gap. The controller (130) is configured to cause fluid turbulence in the liquid crystal composition. The fluid turbulence in the liquid crystal composition (114) results in time varying spatially random scattering of light (102) transmitted through the liquid crystal composition (114). The liquid crystal composition (114) has a chiral nematic phase.