A method for influencing light propagation directions of a light-emitting surface emitting light of a first wavelength range in a first direction and light of a second and wavelength range in a second direction. The wavelength ranges have a wavelength-dependent spectral radiance and differ in a peak wavelength. A switchable color converter is arranged in front of the light-emitting surface. The method includes the steps of a) deactivating the color converter for a first mode so that the second-wavelength range is transmitted and the first-wavelength range is absorbed, such that light from the light-emitting surface is only perceptible from the second direction, or b) activating the color converter for a second mode so that light of the first-wavelength range is converted into light of the second-wavelength range and light of the second-wavelength range is transmitted, such that light from the light-emitting surface is perceptible from both directions.

A method for influencing light propagation directions of a light-emitting surface emitting light of a first wavelength range in a first direction and light of a second and wavelength range in a second direction. The wavelength ranges have a wavelength-dependent spectral radiance and differ in a peak wavelength. A switchable color converter is arranged in front of the light-emitting surface. The method includes the steps of a) deactivating the color converter for a first mode so that the second-wavelength range is transmitted and the first-wavelength range is absorbed, such that light from the light-emitting surface is only perceptible from the second direction, or b) activating the color converter for a second mode so that light of the first-wavelength range is converted into light of the second-wavelength range and light of the second-wavelength range is transmitted, such that light from the light-emitting surface is perceptible from both directions.

The present invention provides a quantum dot material structure, a liquid crystal display device, and an electronic device. The quantum dot material structure is applied in the liquid crystal display device. The quantum dot material structure includes a quantum dot core, a quantum dot shell, and a quantum dot ligand layer in order from an inside to an outside. The quantum dot core comprises a cadmium arsenide magic-size, and the quantum dot core is used to absorb green light of a predetermined wavelength. The quantum dot shell is used to protect the quantum dot core. The quantum dot ligand layer is used to promote a structural dispersion of the quantum dot material.

The present invention provides a quantum dot material structure, a liquid crystal display device, and an electronic device. The quantum dot material structure is applied in the liquid crystal display device. The quantum dot material structure includes a quantum dot core, a quantum dot shell, and a quantum dot ligand layer in order from an inside to an outside. The quantum dot core comprises a cadmium arsenide magic-size, and the quantum dot core is used to absorb green light of a predetermined wavelength. The quantum dot shell is used to protect the quantum dot core. The quantum dot ligand layer is used to promote a structural dispersion of the quantum dot material.

A system for association-based scattering processing includes a spatial light modulator configured to modulate one or more of phase and amplitude of light irradiated from a light source to a target object. Additionally, the system includes processing circuitry configured to evaluate a field distribution for one localized illumination, induce a set of field distributions for a plurality of localized illuminations based on the field distribution for the one localized illumination, and apply the set of field distributions to the spatial light modulator, scanning a plurality of localized illuminations on the target object.

A wide viewing angle liquid crystal display includes color filters having a quantum dot and scattering particles and liquid crystal layer disposed in a microcavity, a distance between the color filter and the liquid crystal layer being sized to minimize display deterioration due to parallax.

A wide viewing angle liquid crystal display includes color filters having a quantum dot and scattering particles and liquid crystal layer disposed in a microcavity, a distance between the color filter and the liquid crystal layer being sized to minimize display deterioration due to parallax.

A compact photonic converter for radio frequency (RF) signals comprising fewer components than in the prior art. The fields of the invention are electronics, oscillating circuits, radio frequency circuits and optoelectronics. The converter comprises an optoelectronic oscillator (OEO), which is the local oscillator (LO) for the frequency conversion operation, and an RF signal injection circuit. The OEO uses a single Mach-Zehnder (MZ) electro-optic modulator and a single photodetector to enable simultaneous up/down frequency conversion of the radio frequency signal from the input of the converter. The frequency conversion is based on the intermodulation that occurs inside the MZ modulator.

An integrated electro-optic frequency comb generator based on ultralow loss integrated, e.g. thin-film lithium niobate, platform, which enables low power consumption comb generation spanning over a wider range of optical frequencies. The comb generator includes an intensity modulator, and at least one phase modulator, which provides a powerful technique to generate a broad high power comb, without using an optical resonator. A compact integrated electro-optic modulator based frequency comb generator, provides the benefits of integrated, e.g. lithium niobate, platform including low waveguide loss, high electro-optic modulation efficiency, small bending radius and flexible microwave design.

An optical frequency control device includes: a detection circuit to receive first light including a first frequency, receive second light including a second frequency, modulate the first light with a local oscillation signal, and detect a differential beat signal between the frequency of sideband light included in the modulated first light and the second frequency; a light source control circuit to change the second frequency by frequency-dividing the differential beat signal with a first frequency division number, by frequency-dividing a reference signal with a second frequency division number, and by outputting a phase error signal indicating a phase difference between the frequency-divided differential beat signal and the frequency-divided reference signal; and a signal processing unit to set each of the first frequency division number and the second frequency division number according to the set value of a frequency difference between the first frequency and the second frequency.