The present invention relates to a method and a backlight module that achieve high color saturation of an LCD device. The backlight module that achieves high color saturation of the LCD device includes a notch filter. Light of backlighting of the backlight module is subjected to light filtering by the notch filter and then enters a liquid crystal cell of the LCD device. The notch filter has a cut-off central wavelength of 500-640 nanometers. The half peak width of the cut-off wave band is 10-120 nanometers. The notch filter has a thickness of 0.3-15 millimeters. The present invention also provides a method for achieving high color saturation of an LCD device. The present invention proposes a novel high color saturation technique that allows the color saturation to be increased at different extents in different backlighting and that may have NTSC reach 100% when used with an RG LED.

Light detection devices and corresponding methods are provided. The devices include a reaction structure to contain a reaction solution and at least one reaction site that generates light emissions in response to incident excitation light after treatment with the reaction solution. The devices also include a plurality of light sensors and device circuitry. The devices further include a plurality of light guides extending toward at least one corresponding light sensor from input regions that receive the excitation light and the light emissions from at least one corresponding reaction recess. The light guides comprise a first filter region that filters the excitation light and permits the light emissions of a first wavelength to pass to the at least one corresponding light sensor, and a second filter region that filters the excitation light and the permits light emissions of a second wavelength to pass to the at least one corresponding light sensor.

A backlight module including a back plate, a light guide plate, a light-penetration layer, and a light source is provided. The light guide plate is disposed on the back plate and has a light incident surface and a light-emitting surface. The light-penetration layer is disposed on the light incident surface and adapted to absorb a light in a wavelength range. The light source is disposed on the back plate and faces the light incident surface, wherein the light source is adapted to provide a light. After the light passes through the light-penetration layer, the light enters the light guide plate from the light incident surface and is emitted from the light-emitting surface. In addition, a display having the backlight module is also provided.

An input-coupler of an optical waveguide couples light corresponding to the image and having a corresponding FOV into the optical waveguide, and the input-coupler splits the FOV of the image coupled into the optical waveguide into first and second portions by diffracting a portion of the light corresponding to the image in a first direction toward a first intermediate-component, and diffracting a portion of the light corresponding to the image in a second direction toward a second intermediate-component. An output-coupler of the waveguide combines the light corresponding to the first and second portions of the FOV, and couples the light corresponding to the combined first and second portions of the FOV out of the optical waveguide so that the light corresponding to the image and the combined first and second portions of the FOV is output from the optical waveguide. The intermediate-components and the output-coupler also provide for pupil expansion.

A light concentrator (11) is disclosed which comprises at least one lighting element (1) configured to emit light (32), an optical filter (3) arranged so as to receive light having a wavelength within a selected wavelength emission band via a light in-coupling surface (4) and configured to selectively transmit light incident on the light in-coupling surface through the optical filter and output the light via a light out-coupling surface (5), on a condition that the light incident on the light in-coupling surface has a wavelength within a selected wavelength transmission band, a light-redirection element (6) having a light-redirection surface (7) arranged substantially parallel in relation to the light out-coupling surface (5) of the optical filter so as to receive at least some of the light out-coupled via the light out-coupling surface (5), and configured to redirect light impinging on the light-redirection surface, and a light-guiding region (8), which is delimited at least by the light-redirection surface and the light out-coupling surface (5) of the optical filter, for guiding light out-coupled via the light out-coupling surface towards at least one light-exiting region (9) arranged substantially perpendicular to the light out-coupling surface (5) via which light may leave the light concentrator. The optical filter (3) is configured such that characteristics of the wavelength transmission band depend at least in part on the angle of incidence of light incident on the light in-coupling surface (4), and wherein the optical filter (3) is configured

A liquid crystal display device includes a light source that emits light having a predetermined color; a lens that concentrates the light emitted from the light source and causes the light to exit; a band-pass filter that transmits specific-band light having a specific-band wavelength in the light exiting from the lens; and a light guide plate disposed on a rear surface side of a display panel. The specific-band light transmitted through the band-pass filter is incident on a lateral surface of the light guide plate.

One embodiment of the present invention relates to an optical conversion member including an optical conversion layer containing a quantum dot emitting fluorescent light which is excited by incident excitation light, in which the optical conversion layer contains a quantum dot and polyorganosilsesquioxane, and an adjacent inorganic layer is directly in contact with the optical conversion layer.

An optoelectronic module includes a light guide arranged to receive light, such as ambient light or light reflected by an object. The light guide has a diffractive grating that includes multiple sections, each of which is tuned to a respective wavelength or narrow band of wavelengths. The module further includes multiple photosensitive elements, each of which is arranged to receive light diffracted by a respective one of the sections of the diffractive grating. The module can be integrated, for example, as part of a spectrometer or other apparatus for optically determining characteristics of an object.

According to one embodiment, a display device includes a first arrangement layer and a second arrangement layer. The first layer includes a first pixel, a second pixel, and a third pixel are arranged periodically in one direction. The second layer is opposed to the first layer, and the second layer includes a first element, a second element, and a third element which are arranged periodically to correspond to the first pixel, the second pixel, and the third pixel, respectively, and separate emission light to light of wavelength corresponding to a first color, light of wavelength corresponding to a second color, and light of wavelength corresponding to a third color to be emitted on the first pixel, the second pixel, and the third pixel, respectively.

There is provided a near-to-eye display device, including: an optical waveguide; at least one in-coupling grating on a surface of the optical waveguide and configured to couple received parallel light into the optical waveguide for propagating by total internal reflection; a light out-coupling structure on the surface of the optical waveguide and configured to extract the light propagating by total internal reflection in the optical waveguide to become an outgoing light from the optical waveguide; and an optical lens configured to receive the outgoing light, remain an outgoing direction of the outgoing light with a first polarization direction, and converge or diverge the outgoing light with a second polarization direction. There is further provided an augmented reality apparatus including the near-to-eye display device.