A polymerizable LC material comprising one or more reactive mesogenic compounds, one or more chiral compounds and a block copolymer that comprises at least one polyfluorooxetane block bonded to a polyether block, said polyfluorooxetane block having a repeating unit of the formula ##STR00001## Further, a method for its preparation, a polymer film obtainable from a corresponding polymerizable LC material, a method of preparation of such polymer film, and the use of such polymer film and said polymerizable LC material in optical, electro-optical, decorative or security devices.

The disclosure is generally directed to compounds and compositions that can be used as liquid crystal materials in adjustable ophthalmic lenses.

A compound is represented by general formula (I), a liquid-crystal composition contains this compound, and devices are made using this liquid-crystal composition. Having a large refractive-index anisotropy Δn and a sufficiently high Tni, highly compatible with liquid-crystal compositions, and exhibiting a high dielectric anisotropy in the radio frequency range, the compound is a useful material for RF phase shifters, phased-array antennae, image recognition devices, distance meters, liquid-crystal displays, liquid-crystal lenses, and birefringent lenses for 3D image display, among other devices. ##STR00001##

A compound is represented by general formula (I), a liquid-crystal composition contains this compound, and devices are made using this liquid-crystal composition. Having a large refractive-index anisotropy Δn and a sufficiently high Tni, highly compatible with liquid-crystal compositions, and exhibiting a high dielectric anisotropy in the radio frequency range, the compound is a useful material for RF phase shifters, phased-array antennae, image recognition devices, distance meters, liquid-crystal displays, liquid-crystal lenses, and birefringent lenses for 3D image display, among other devices. ##STR00001##

The present invention provides a compound, a composition, a cured object, an optically anisotropic body, and a reflective film which have high refractive index anisotropy Δn and excellent light resistance, and which exhibit liquid crystallinity. The compound of the present invention is a compound represented by General Formula (1). ##STR00001##

The present invention provides a compound, a composition, a cured object, an optically anisotropic body, and a reflective film which have high refractive index anisotropy Δn and excellent light resistance, and which exhibit liquid crystallinity. The compound of the present invention is a compound represented by General Formula (1). ##STR00001##

An optical system in one aspect of the present disclosure includes a first light source, a second light source, a first spatial optical phase modulator, a second spatial optical phase modulator, and a projector. The first spatial optical phase modulator outputs first phase-modulated light based on an input light having a first wavelength from the first light source. The second spatial optical phase modulator outputs second phase-modulated light based on input light having a second wavelength from the second light source. The projector projects the first phase-modulated light and the second phase-modulated light on a target. The first spatial optical phase modulator is a liquid crystal device including a first liquid crystal layer. The second spatial optical phase modulator is a liquid crystal device including a second liquid crystal layer. The first liquid crystal layer includes a liquid crystal material different from that of the second liquid crystal layer.

A LC lens and a liquid-crystal medium used in said LC lens, wherein the medium contains one or more compounds of each of formulae I and II ##STR00001##

A LC lens and a liquid-crystal medium used in said LC lens, wherein the medium contains one or more compounds of each of formulae I and II ##STR00001##

An optical element includes an optically-anisotropic layer that is formed of a liquid crystal composition including a liquid crystal compound having a polymerizable group, in which a ratio of a bend elastic constant K33 to a splay elastic constant K11 in the liquid crystal composition satisfies 0.8≤K33/K11≤1.2 at any temperature of a nematic temperature range, and the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction.