MULTICHANNEL COLOR SENSOR
    1.
    发明公开

    公开(公告)号:US20230184589A1

    公开(公告)日:2023-06-15

    申请号:US17912158

    申请日:2021-03-18

    CPC classification number: G01J3/2823 G01J3/36 G01J3/51 G01J3/524 G01J2003/1213

    Abstract: An integrated radiation sensor for color matching functions comprises a plurality of color matching channels, each color matching channel comprising a radiation sensing element and an associated optical filter defining a spectral sensitivity profile corresponding to a color matching function. The sensors comprise a plurality of compensation channels, each compensation channel comprising a radiation sensing element and an associated optical filter defining a spectral sensitivity profile for use in compensating a color sensed by the color matching channels. The spectral sensitivity profile of each compensation channel substantially corresponds to a mean of an upper deviation spectra and a lower deviation spectra, wherein the upper deviation spectra corresponds to a spectral sensitivity profile of a typical color matching channel increased by a fixed deviation in wavelength and the lower deviation spectra corresponds to the spectral sensitivity profile of the typical color matching channel decreased by the fixed deviation in wavelength.

    Sectional Multi Spectral Sensor with Optical Blurring

    公开(公告)号:US20250085160A1

    公开(公告)日:2025-03-13

    申请号:US18291882

    申请日:2022-07-22

    Abstract: In a first aspect of the disclosure there is provided a multi-spectral optical sensor comprising: a monolithic semiconductor chip defining a plurality of subarrays of optical detector regions, each array comprising the same number and relative spatial arrangement of optical detector regions; a plurality of optical filters; and a plurality of lens elements, wherein each optical filter is positioned between a corresponding lens element and a corresponding subarray of optical detector regions such that light from a scene incident on any one of the lens elements along a direction of incidence propagates through the corresponding optical filter towards a corresponding one of the optical detector regions of the corresponding subarray of optical detector regions, which corresponding one of the optical detector regions depending on the direction of incidence, and wherein the incident light forms an out-of-focus image of the scene at a plane of the optical detector regions.

    COMPENSATION OF OPTICAL ALIGNMENT ISSUES FOR SECTORED-VIEW MULTI-SPECTRAL OPTICAL SENSORS

    公开(公告)号:US20250067596A1

    公开(公告)日:2025-02-27

    申请号:US18723363

    申请日:2022-12-08

    Inventor: Gunter SIESS

    Abstract: A multi-spectral optical sensor comprises a plurality of apertures, a plurality of lens arrangements, a plurality of optical filters and a monolithic semiconductor chip defining a plurality of sub-arrays of optical detector regions, each sub-array comprising the same number and relative spatial arrangement of optical detector regions and the optical detector regions of each sub-array being arranged on a predetermined pitch in a direction parallel to a surface of the of the semiconductor chip. The multi-spectral optical sensor is configured so that light from a scene incident on any one of the apertures along any given direction of incidence is transmitted through the corresponding lens arrangement and the corresponding optical filter to the corresponding sub-array of optical detector regions so as to form an out-of-focus image at a plane of the optical detector regions of the corresponding sub-array of optical detector regions.

    MULTI-SPECTRAL OPTICAL SENSOR AND SYSTEM
    6.
    发明公开

    公开(公告)号:US20230388660A1

    公开(公告)日:2023-11-30

    申请号:US18248246

    申请日:2021-10-06

    Abstract: A monolithic semiconductor chip defines a plurality of subarrays of optical detector regions, wherein each subarray of optical detector regions includes a corresponding plurality of optical detector regions and wherein each subarray of optical detector regions has the same relative spatial arrangement of optical detector regions as each of the other subarrays of optical detector regions. A multi-spectral optical sensor comprises the monolithic semiconductor chip, a plurality of optical filters, and a plurality of lens elements, wherein each optical filter is aligned between a corresponding lens element and a corresponding subarray of optical detector regions such that light which is incident on any one of the lens elements along a direction of incidence converges through the corresponding optical filter onto a corresponding one of the optical detector regions of the corresponding subarray of optical detector regions, which corresponding one of the optical detector regions depends on the direction of incidence. Such a multi-spectral optical sensor may be used to measure spectral information relating to different parts or sectors of a scene captured by an image sensor or a camera. A multi-spectral optical system and an image sensing system are also disclosed which comprise the multi-spectral optical sensor.

    COLOR MEASUREMENT
    8.
    发明申请

    公开(公告)号:US20230003578A1

    公开(公告)日:2023-01-05

    申请号:US17781711

    申请日:2020-12-02

    Inventor: Gunter SIESS

    Abstract: A method of measuring the color of a surface may include a device positioned above the surface. The device may include an optical sensor and a display screen. The optical sensor measures visible light level reflected from the surface in a plurality of spectral channels. A plurality of patterns are sequentially displayed on the display screen. The optical sensor is used to measure light reflected by the surface during display of each pattern. A value is determined for the distance from the optical sensor to the illuminated region for a first local maximum of intensity of the measured light reflected by the surface. A location in a color space corresponding to a color of the surface or a reflectance spectrum of the surface is determined based on the visible light level in each spectral channel for the value of the distance corresponding to the first local maximum.

    METHOD AND APPARATUS FOR DETERMINING OR CLASSIFYING THE SURFACE COLOUR OF AT LEAST PARTLY TRANSLUCENT MATERIALS

    公开(公告)号:US20220196472A1

    公开(公告)日:2022-06-23

    申请号:US17593284

    申请日:2020-03-16

    Abstract: An apparatus for determining a colour of a translucent material. The apparatus comprises a first light source configured to illuminate a translucent material at a first surface location, a second light source configured to illuminate the translucent material at a second surface location spaced apart from said first surface location, and a light spectral sensor configured to detect light at said first surface location. The apparatus is configured to operate the first and second light sources alternately, and such that light detected by the light spectral sensor originating from said first source is principally light diffusely reflected from said first surface location, whilst light detected by the detector originating from said second source is principally light scattered by scattering centres in the interior of the translucent material.

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