公开(公告)号：US20160252395A1

公开(公告)日：2016-09-01

申请号：US15059715

申请日：2016-03-03

Applicant: IMEC

Inventor： Klaas Tack ,  Andy Lambrechts ,  Luc Haspeslagh

IPC: G01J3/26 ,  G01J3/12 ,  H04N5/33 ,  G01J3/28

CPC classification number: G01J3/2823 ,  G01J3/12 ,  G01J3/26 ,  G01J3/2803 ,  G01J2003/1226 ,  G01J2003/265 ,  G01J2003/2806 ,  G01J2003/2826 ,  H04N5/332 ,  H04N5/378

Abstract: An integrated circuit for an imaging system is disclosed. In one aspect, an integrated circuit has an array of optical sensors, an array of optical filters integrated with the sensors and configured to pass a band of wavelengths onto one or more of the sensors, and read out circuitry to read out pixel values from the sensors to represent an image. Different ones of the optical filters are configured to have a different thickness, to pass different bands of wavelengths by means of interference, and to allow detection of a spectrum of wavelengths. The read out circuitry can enable multiple pixels under one optical filter to be read out in parallel. The thicknesses may vary non-monotonically across the array. The read out, or later image processing, may involve selection or interpolation between wavelengths, to carry out spectral sampling or shifting, to compensate for thickness errors.

Abstract translation: 公开了一种用于成像系统的集成电路。 在一个方面，集成电路具有光学传感器阵列，与传感器集成的光学滤波器阵列，并被配置为将波长带传递到一个或多个传感器上，并且读出电路以从 传感器来表示图像。 不同的滤光器被配置为具有不同的厚度，以通过干涉传递不同波长的波段，并且允许检测波长谱。 读出电路可以使一个光学滤波器下的多个像素平行读出。 厚度可以在阵列之间非单调地变化。 读出或稍后的图像处理可能涉及波长之间的选择或插值，以进行频谱采样或移位，以补偿厚度误差。

公开(公告)号：US09366573B2

公开(公告)日：2016-06-14

申请号：US14267776

申请日：2014-05-01

Applicant: IMEC

Inventor： Bert Geelen ,  Andy Lambrechts ,  Klaas Tack

IPC: H04N9/07 ,  H04N9/04 ,  G01J3/28 ,  G01J3/51 ,  G01J3/02

CPC classification number: G01J3/2803 ,  G01J3/0208 ,  G01J3/0229 ,  G01J3/0235 ,  G01J3/0264 ,  G01J3/2823 ,  G01J3/513 ,  Y10T29/49826

Abstract: A spectral camera having an objective lens, an array of lenses for producing optical copies of segments of the image, an array of filters for the different optical channels and having an interleaved spatial pattern, and a sensor array to detect the copies of the image segments is disclosed. Further, detected segment copies of spatially adjacent optical channels have different passbands and represent overlapping segments of the image, and detected segment copies of the same passband on spatially non-adjacent optical channels represent adjacent segments of the image which fit together. Having segments of the image copied can help enable better optical quality for a given cost. Having an interleaved pattern of the filter bands with overlapping segments enables each point of the image to be sensed at different bands to obtain the spectral output for many bands simultaneously to provide better temporal resolution.

Abstract translation: 具有物镜的光谱相机，用于产生图像的片段的光学副本的透镜阵列，用于不同光学信道的滤光器阵列并具有交错的空间图案，以及用于检测图像片段的副本的传感器阵列 被披露。 此外，空间相邻光通道的检测到的片段副本具有不同的通带并且表示图像的重叠片段，并且在空间上不相邻的光学通道上检测到相同通带的片段副本表示装配在一起的图像的相邻片段。 复制图像的片段有助于为给定成本提供更好的光学质量。 具有重叠片段的滤波器带的交错图案使得能够在不同频带处感测图像的每个点，以同时获得许多频带的频谱输出以提供更好的时间分辨率。

公开(公告)号：US20150288894A1

公开(公告)日：2015-10-08

申请号：US14267781

申请日：2014-05-01

Applicant: IMEC

Inventor： Bert Geelen ,  Andy Lambrechts ,  Klaas Tack

IPC: H04N5/33 ,  H04N17/00 ,  H04N5/265

CPC classification number: H04N5/332 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/2823 ,  G01J2003/2826 ,  H04N5/265 ,  H04N17/002

Abstract: A spectral camera for producing a spectral output is disclosed. The spectral camera has an objective lens for producing an image, an array of mirrors, an array of filters for passing a different passband of the optical spectrum for different ones of the optical channels arranged so as to project multiple of the optical channels onto different parts of the same focal plane, and a sensor array at the focal plane to detect the filtered image copies simultaneously. By using mirrors, there may be less optical degradation and the trade off of cost with optical quality can be better. By projecting the optical channels onto different parts of the same focal plane a single sensor or coplanar multiple sensors can to be used to detect the different optical channels simultaneously which promotes simpler alignment and manufacturing.

Abstract translation: 公开了一种用于产生光谱输出的光谱相机。 光谱相机具有用于产生图像的物镜，反射镜阵列，用于通过不同的光通道的不同光通道的不同通带的滤光器阵列，其布置成将多个光通道投影到不同的部分上 并且在焦平面处的传感器阵列同时检测经滤波的图像拷贝。 通过使用镜子，可能会有较少的光学劣化，并且与光学质量的成本的折衷可以更好。 通过将光通道投影到同一焦平面的不同部分上，可以使用单个传感器或共面多个传感器来同时检测不同的光学通道，从而促进更简单的对准和制造。

公开(公告)号：US20140175265A1

公开(公告)日：2014-06-26

申请号：US14135872

申请日：2013-12-20

Applicant: IMEC

Inventor： Pilar Gonzalez ,  Murali Jayapala ,  Andy Lambrechts ,  Klaas Tack

IPC: H01L27/146

CPC classification number: H01L27/14625 ,  G01B7/08 ,  G01J3/0297 ,  G01J3/26 ,  G01J3/2823 ,  G01J3/36

Abstract: A solid-state spectral imaging device is described. The device includes an image sensor and a plurality of optical filters directly processed on top of the image sensor. Each optical filter includes a first mirror and a second mirror defining an optical filter cavity having a fixed height. Each optical filter also includes a first electrode and a second electrode having a fixed position located opposite to each other and positioned to measure the height of the optical filter cavity. Further, a method to calibrate spectral data of light and a computer program for calibrating light is described.

Abstract translation: 描述了固态光谱成像装置。 该装置包括在图像传感器的顶部直接处理的图像传感器和多个光学滤波器。 每个滤光器包括第一反射镜和限定具有固定高度的光学滤光腔的第二反射镜。 每个滤光器还包括第一电极和第二电极，所述第一电极和第二电极具有彼此相对定位并固定以测量光学滤光器空腔的高度的固定位置。 此外，描述了校准光的光谱数据的方法和用于校准光的计算机程序。

公开(公告)号：US11946850B2

公开(公告)日：2024-04-02

申请号：US17127980

申请日：2020-12-18

Applicant: IMEC VZW

Inventor： Geert Vanmeerbeeck ,  Ziduo Lin ,  Abdulkadir Yurt ,  Richard Stahl ,  Andy Lambrechts

IPC: G01N15/14 ,  G01N15/1434 ,  G03H1/08 ,  G01N15/06

CPC classification number: G01N15/1434 ,  G03H1/0866 ,  G01N15/06 ,  G01N2015/1454 ,  G01N2015/1486 ,  G03H2001/0883

Abstract: A device for detecting particles in air; said device comprising:



a receiver for receiving a flow of air comprising particles;
a particle capturing arrangement configured to transfer the particles from the flow of air to a liquid for collection of a set of particles in the liquid;
a flow channel configured to pass a flow of the liquid comprising the set of particles through the flow channel;
a light source configured to illuminate the set of particles in the flow channel, such that an interference pattern is formed by interference between light being scattered by the set of particles and non-scattered light from the light source; and
an image sensor comprising a plurality of photo-sensitive elements configured to detect incident light, the image sensor being configured to detect the interference pattern.

公开(公告)号：US11095835B2

公开(公告)日：2021-08-17

申请号：US16722877

申请日：2019-12-20

Applicant: IMEC VZW

Inventor： Nicolaas Tack ,  Andy Lambrechts

IPC: H04N5/33 ,  G02B5/28 ,  H04N5/357 ,  H04N5/374

Abstract: An example method and hyperspectral imaging (HSI) system for imaging a scene are provided. The method is for imaging the scene with the HSI system including a sensor with a plurality of sensor pixels and a plurality of spectral filters, each of the spectral filters being associated with one of the sensor pixels. The method comprises obtaining a higher-resolution spatial image by illuminating the scene with a first set of wavelengths, wherein each spectral filter passes the first set of wavelengths to the sensor pixel it is associated with. The method further comprises obtaining a lower-resolution hyperspectral image by illuminating the scene with a second set of wavelengths, wherein each spectral filter passes only a subset of the second set of wavelengths to the sensor pixel it is associated with.

公开(公告)号：US10126709B2

公开(公告)日：2018-11-13

申请号：US15727832

申请日：2017-10-09

Applicant: IMEC VZW

Inventor： Richard Stahl ,  Murali Jayapala ,  Andy Lambrechts ,  Geert Vanmeerbeeck

IPC: G03H1/04 ,  G03H1/26 ,  G01N15/14 ,  G01N15/10

Abstract: Embodiments described herein relate to lens-free imaging. One example embodiment may include a lens-free imaging device for imaging a moving sample. The lens-free imaging device may include a radiation source configured to emit a set of at least two different wavelengths towards the moving sample. The lens-free imaging device is configured to image samples for which a spectral response does not substantially vary for a set of at least two different wavelengths. The lens-free imaging device may also include a line scanner configured to obtain a line scan per wavelength emitted by the radiation source and reflected by, scattered by, or transmitted through the moving sample. The line scanner is configured to regularly obtain a line scan per wavelength. Either the radiation source or the line scanner is configured to isolate data of the at least two different wavelengths.

公开(公告)号：US20170195586A1

公开(公告)日：2017-07-06

申请号：US15389057

申请日：2016-12-22

Applicant: IMEC VZW

Inventor： Jonathan Borremans ,  Andy Lambrechts ,  Jerome Baron

IPC: H04N5/33 ,  G06T7/90 ,  H04N5/232 ,  G01J3/28 ,  G01C3/08

CPC classification number: H04N5/332 ,  G01C3/08 ,  G01J3/0237 ,  G01J3/0248 ,  G01J3/0278 ,  G01J3/28 ,  G01J3/2823 ,  G01J2003/2826 ,  G06T7/90 ,  G06T2207/10016 ,  H04N5/23212 ,  H04N5/23222 ,  H04N5/23293

Abstract: A user device including a camera, a spectrometer module, and a processing unit is disclosed. In one aspect, the camera is adapted to acquire at least one image of a scenery which falls within a field of view of the camera. The spectrometer module is adapted to acquire spectral information from a region within the scenery which region falls within a field of view of the spectrometer module. The processing unit is adapted to determine, based on information relating the field of view of the spectrometer module to the field of view of the camera, a spectrometer module target area, within the at least one image, corresponding to the region. The processing unit is adapted to output display data to a screen of the user device for providing an indication of the target area on the display.

公开(公告)号：US20150276478A1

公开(公告)日：2015-10-01

申请号：US14267758

申请日：2014-05-01

Applicant: IMEC

Inventor： Bert Geelen ,  Andy Lambrechts ,  Klaas Tack

IPC: G01J3/26 ,  G01J3/28 ,  G01J3/02

CPC classification number: G01J3/26 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0235 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/2823 ,  G01J2003/2826

Abstract: A spectral camera for producing a spectral output is disclosed. The spectral camera has an objective lens for producing an image, a mosaic of filters for passing different bands of the optical spectrum, and a sensor array arranged to detect pixels of the image at the different bands passed by the filters, wherein for each of the pixels, the sensor array has a cluster of sensor elements for detecting the different bands, and the mosaic has a corresponding cluster of filters of different bands, integrated on the sensor element so that the image can be detected simultaneously at the different bands. Further, the filters are first order Fabry-Perot filters, which can give any desired passband to give high spectral definition. Cross talk can be reduced since there is no longer a parasitic cavity.

Abstract translation: 公开了一种用于产生光谱输出的光谱相机。 光谱相机具有用于产生图像的物镜，用于通过光谱的不同频带的滤波器的马赛克;以及传感器阵列，其布置成检测由滤色器通过的不同频带处的图像的像素，其中对于每个 传感器阵列具有用于检测不同频带的传感器元件簇，并且马赛克具有集成在传感器元件上的不同频带的相应的滤波器簇，使得可以在不同频带处同时检测图像。 此外，滤波器是第一级法布里 - 珀罗滤波器，其可以给出任何期望的通带以提供高光谱定义。 可以减少串扰，因为不再有寄生腔。

公开(公告)号：US11733095B2

公开(公告)日：2023-08-22

申请号：US17302217

申请日：2021-04-27

Applicant: IMEC

Inventor： Nicolaas Tack ,  Andy Lambrechts ,  Luc Haspeslagh

IPC: G01J3/28 ,  H04N23/11 ,  H04N25/75 ,  G01J3/26 ,  G01J3/12

CPC classification number: G01J3/2823 ,  G01J3/12 ,  G01J3/26 ,  G01J3/2803 ,  H04N23/11 ,  H04N25/75 ,  G01J2003/1226 ,  G01J2003/265 ,  G01J2003/2806 ,  G01J2003/2826

Abstract: A method for calibrating an image sensor begins by illuminating a portion of the image sensor with an input light spectrum, where the input light spectrum includes light of known wavelength and intensity. The method continues by sampling an output for each optical sensor of the image sensor, where each optical sensor is associated with one or more optical filters and where each optical filter being associated with a group of optical filters of a plurality of groups of optical filters. Each optical filter of a group of optical filters is configured to pass light in a different wavelength range and at least some optical filters in different groups of the plurality of groups of optical filters are configured to pass light in substantially a same wavelength range. The method then continues by comparing a sampled output for each optical sensor of the plurality of optical sensors with an expected output and generating a calibration factor for each of at least a subset of the plurality of optical sensors and storing the generated calibration factors in memory.