An angular filter includes a first and a second array of plano-convex lenses and an array of openings. The planar surfaces of the lenses of the first array and of the second array face one another.

A display panel includes at least one pixel unit. The pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel. The first, second, third and fourth sub-pixels include a first color filter portion, second color filter portion, a third color filter portion and a fourth color filter portion, respectively. The first, second and third color filter portions are configured to emit light of three primary colors. A material of the fourth color filter portion includes at least one light conversion material configured to convert a portion of light directed to the fourth color filter portion into light of at least one primary color. The light of at least one primary color is capable of being mixed with another portion of the light directed to the fourth color filter portion to generate white light.

A light detecting device is provided with: a filter array including filters arranged two-dimensionally, each of the filters having a light-incident surface and a light-emitting surface, the filters including multiple types of filters having mutually different transmission spectra; and an image sensor having a light-detecting surface facing the light-emitting surface, the image sensor being provided with light-detecting elements arranged two-dimensionally on the light-detecting surface, wherein the distance between the light-emitting surface and the light-detecting surface is different for each of the filters.

Disclosed is an image sensor including a sensor substrate including a plurality of light sensing cells; a transparent spacer layer provided over the sensor substrate; and a color separation lens array provided over the spacer layer and including a plurality of nano-posts configured to change a phase of incident light according to an incident location, wherein the plurality of nano-posts are arranged in a plurality of layers, wherein, from among the plurality of nano-posts, nano-posts having widths less than wc may be arranged only in any one layer of the plurality of layers. Also, wc may be greater than or equal to 80 nm and less than or equal to 200 nm. Therefore, the minimum width of the nano-posts provided in the color separation lens array may be increased, which is advantageous for a manufacturing process.

Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. One embodiment of the multi-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.

A display panel includes: a light emitting device to generate light; a plurality of color conversion patterns including: a first color conversion pattern including first scattering particles dispersed in the first color conversion pattern and configured to scatter the light of the light emitting device; and a second color conversion pattern including second scattering particles dispersed in the second color conversion pattern and configured to scatter the light of the light emitting device; a plurality of color filters including: a first color filter overlapping the first color conversion pattern; and a second color filter overlapping the second color conversion pattern; and a single, low index of refraction layer substantially continuously extending in the surface direction to overlap the first and the second color conversion patterns. The single, low index of refraction layer has a refractive index lower than refractive indexes of the first and second color conversion patterns.

In one embodiment, a method includes accessing first image data generated by a first image sensor having a first filter array that has a first filter pattern. The first filter pattern includes a number of first filter types. The method also includes accessing second image data generated by a second image sensor having a second filter array that has a second filter pattern different from the first filter pattern. The second filter pattern includes a number of second filter types, the number of second filter types and the number of first filter types have at least one filter type in common. The method also includes determining a correspondence between one or more first pixels of the first image data and one or more second pixels of the second image data based on a portion of the first image data associated with the filter type in common.

A combination structure includes an in-plane pattern of unit cells, wherein the each unit cell includes nanostructures each having a dimension that is smaller than a near-infrared wavelength and a light-absorbing layer adjacent to the nanostructures and including a near-infrared absorbing material configured to absorb light in at least a portion of a near-infrared wavelength spectrum. The nanostructures are define a nanostructure array in the unit cells, and a wavelength width at 50% transmittance of a transmission spectrum in the near-infrared wavelength spectrum of the combination structure is wider than a wavelength width at 50% transmittance of a transmission spectrum in the near-infrared wavelength spectrum of the nanostructure array.

A spectroscopic module includes a plurality of beam splitters; a plurality of bandpass filters disposed on one side in a Z direction with respect to the plurality of beam splitters; a light detector disposed on the one side in the Z direction with respect to the plurality of bandpass filters and includes a plurality of light receiving regions; a first support body supporting the plurality of beam splitters; a second support body supporting the plurality of bandpass filters; and a casing including a third wall portion integrally formed with the second support body. The first support body is attached to the third wall portion such that an outer surface of the first support body is in contact with an inner surface of the third wall portion in a state where the position is defined by a plurality of positioning pins and a plurality of positioning holes.

A color-converting substrate includes a color-converting part including a wavelength-converting particle configured to change a wavelength of an incident light to emit a light having a color different from the incident light, a color filter pattern filtering the light emitted from the color-converting part, and a light-reflective layer disposed between the color-converting part and the color filter pattern to selectively reflect a light having a wavelength same as the wavelength of the incident light.