Samsung Electronics Co., Ltd.

Hyochul Kim

Younggeun Roh

Yeonsang Park

Jaesoong Lee

Youngzoon Yoon

Suyeon Lee

Unjeong Kim

Radwanul Hasan Siddique

Jineun Kim

Hyuck Choo

Moonil Jung

Daniel Assumpcao

Seungju Han

Junhyuk Moon

Chanwook Baik

Kyungsang Cho

Weonkyu Koh

Heejin Choi

Moonsook Lee

Provided is a spectral filter including a first Bragg reflective layer, a second Bragg reflective layer that is spaced apart from the first Bragg reflective layer and includes a cavity, the first resonance layer being provided between the first Bragg reflective layer and the second Bragg reflective layer, a second resonance layer including at least a portion of the first Bragg reflective layer, the second Bragg reflective layer, and the cavity, a third Bragg reflective layer, a fourth Bragg reflective layer spaced apart from the third Bragg reflective layer, wherein the second resonance layer is provided between the third Bragg reflective layer and the fourth Bragg reflective layer.

Spectral filter, and image sensor and electronic device including the spectral filter

Provided is a spectral filter, and an image sensor and an electronic device each including the spectral filter. The spectral filter includes: at least one first filter having a central wavelength in a first wavelength region; and at least one second filter having a central wavelength in a second wavelength region. The first filter includes: a plurality of first metal reflection layers vertically spaced apart from each other; and at least one first cavity provided between the plurality of first metal reflection layers. The second filter includes: a second metal reflection layer and a Bragg reflection layer vertically spaced apart from each other; and at least one second cavity disposed between the second metal reflection layer and the Bragg reflection layer.

Spectral filter, and image sensor and electronic device including spectral filter

An apparatus includes: a first image sensor configured to sense a first image of a subject; a second image sensor configured to sense a second image of the subject; and a third image sensor configured to sense a third image of the subject, wherein each of the first image, the second image, and the third image may include a spectral image different from each other, wherein one of the first image, the second image, and the third image may include an image that is used to obtain a correction value applied to correction of at least one of the others of the first image, the second image, and the third image, wherein the first image, the second image, and the third image sensor are included in a same device, and wherein the others of the first, second, and third images include uncorrected hyperspectral images.

Dual camera module including hyperspectral camera module, apparatuses including dual camera module, and method of operating the same

A polarized light emitting device and a polarization analysis apparatus including the same are disclosed. The polarized light emitting device includes a first reflective layer and a second reflective layer disposed to face each other in a first direction, a gain medium layer between the first reflective layer and the second reflective layer, and a linear polarizer layer, wherein the linear polarizer layer includes a plurality of first grating elements alternately arranged with a plurality of second grating elements along a second direction perpendicular to the first direction, wherein each of the first grating elements includes a first dielectric material having a first refractive index, and wherein each of the second grating elements includes a second dielectric material having a second refractive index different from the first refractive index.

Polarized light emitting device and polarization analysis apparatus

A method of deriving color response characteristics of an image acquisition device, the method including: collecting first training data sets; deriving a first-order color response characteristic of the image acquisition device by performing a matching operation of statistically matching a relationship between device coordinates and colorimetric coordinates of an image acquisition device using the first training data sets; collecting second training data sets corresponding to a spectrum of one or more edge regions of a color gamut of a color matching function representing a sensitivity of a human eye; and deriving a second-order color response characteristic of the image acquisition device by further performing the matching operation using the second training data sets.

Method of deriving color response characteristics of image acquisition device and image acquisition device therefor

Optical spectrometers may be used to determine the spectral components of electromagnetic waves. Spectrometers may be large, bulky devices and may require waves to enter at a nearly direct angle of incidence in order to record a measurement. What is disclosed is an ultra-compact spectrometer with nanophotonic components as light dispersion technology. Nanophotonic components may contain metasurfaces and Bragg filters. Each metasurface may contain light scattering nanostructures that may be randomized to create a large input angle, and the Bragg filter may result in the light dispersion independent of the input angle. The spectrometer may be capable of handling about 200 nm bandwidth. The ultra-compact spectrometer may be able to read image data in the visible (400-600 nm) and to read spectral data in the near-infrared (700-900 nm) wavelength range. The surface area of the spectrometer may be about 1 mm, allowing it to fit on mobile devices.

Image sensor and method of operating

An image sensor and an image processing method of the image sensor are provided. The image sensor includes: a spectral filter including a plurality of unit filters arranged in two dimensions and having different wavelengths; an image sensor including a pixel array receiving light transmitted through the spectral filter and outputting image signals; and a processor performing image processing on image signals output from the pixel array.

Image sensor and image processing method, and electronic device including the image sensor

Provided is a polarization spectral filter, including: a first reflector and a second reflector disposed to face each other in a first direction; and a grating layer disposed between the first reflector and the second reflector. The grating layer includes a plurality of first grating elements and a plurality of second grating elements, the plurality of first grating elements and the plurality of second grating elements being alternately arranged in a second direction perpendicular to the first direction. The plurality of first grating elements include a first dielectric material having a first refractive index. The plurality of second grating elements include a second dielectric material having a second refractive index different from the first refractive index.

Polarization spectral filter, polarization spectral filter array, and polarization spectral sensor

A spectral filter may include a plurality of filter arrays each including a plurality of unit filters having different center wavelengths from each other. Each of the plurality of unit filters may include a first metal reflection layer and a second metal reflection layer which are disposed to be apart from each other; a cavity including a first pattern and being arranged between the first metal reflection layer and the second metal reflection layer; and a lower pattern film being disposed under the first metal reflection layer and including a second pattern. In unit filters having a same center wavelength in each of the plurality of unit filters corresponding to the plurality of filter arrays, the first pattern of the cavity and the second pattern of the lower pattern film may vary according to a position of the unit filters.

An object recognition apparatus includes a first spectrometer configured to obtain a first type of spectrum data from light scattered, emitted, or reflected from an object; a second spectrometer configured to obtain a second type of spectrum data from the light scattered, emitted, or reflected from the object, the second type of spectrum data being different from the first type of spectrum data; an image sensor configured to obtain image data of the object; and a processor configured to identify the object using data obtained from at least two from among the first spectrometer, the second spectrometer, and the image sensor and using at least two pattern recognition algorithms.

Object recognition apparatus and operation method thereof

Provided is a spectral filter, and an image sensor and an electronic device each including the spectral filter. The spectral filter includes a first metal reflection layer and a second metal reflection layer spaced apart from each other, a plurality of cavities disposed between the first metal reflection layer and the second metal reflection layer, and a bandpass filter disposed between the plurality of cavities and selectively transmitting light of a certain wavelength region. Each of the plurality of cavities may have a multi-mode structure having a plurality of central wavelengths.

Provided are a dual image sensor including an image sensor including a first area and a second area, the first area and the second area including a plurality of pixels, respectively, a band-pass filter layer provided on the first area, the band-pass filter layer configured to transmit light emitted by an object and having a specific wavelength corresponding to physical property information of the object to the image sensor, and a planarization layer provided on the second area and on the same plane as the band-pass filter layer.

Dual image sensor

Provided are an optical filter and a spectrometer including the optical filter. The optical filter includes at least one first filter element having a first center wavelength of a first wavelength band, and at least one second filter element arranged on a same plane as the at least one first filter element, the at least one second filter element having a second center wavelength of a second wavelength band. The at least one first filter element includes a first bandpass filter including a plurality of first Bragg reflective layers and at least one first cavity provided between the plurality of first Bragg reflective layers, and a first multi-layer provided on the first bandpass filter, the first multi-layer having a center wavelength different than the first center wavelength of the first Bragg reflective layers in order to block light of a wavelength band other than the first wavelength band.

Optical filter and spectrometer including the same

Provided is an image acquisition apparatus including a first hyperspectral image sensor configured to obtain a first image, and a processor configured to process the first image obtained by the first hyperspectral image sensor, wherein the processor is further configured to extract a spectrum of each pixel of the first image obtained by the first hyperspectral image sensor, correct the spectrum by normalizing the spectrum of each pixel, distinguish an object from a background within the first image by recognizing a pattern of the spectrum of each pixel, and correct a color of the object and a color of the background by using a spatial distribution of illuminations.

Growing community of inventors

Yongin-si, South Korea

Hyochul Kim