Abstract:
Digital cameras for spectrally imaging an object or scene comprise an imaging component, a fixed one-dimensional disperser and an image sensor having sensor pixels, the disperser and image sensor arranged with matching optical parameters and in a predetermined spatial relationship. Each sensor pixel detects multiplexed spectral information from at least two adjacent object points and the spectral information detected by each sensor pixel is demultiplexed and processed into spectral-spatial data to provide spectral images.
Abstract:
The present technology relates to solid-state image sensor and an imaging system which are capable of providing a solid-state image sensor and an imaging system which are capable of realizing a spectroscopic/imaging device for visible/near-infrared light having a high sensitivity and high wavelength resolution, and of achieving two-dimensional spectrum mapping with high spatial resolution. There are provided a two-dimensional pixel array, and a plurality of types of filters that are arranged facing a pixel region of the two-dimensional pixel array, the filters each including a spectrum function and a periodic fine pattern shorter than a wavelength to be detected, wherein each of the filters forms a unit which is larger than the photoelectric conversion device of each pixel on the two-dimensional pixel array, where one type of filter is arranged for a plurality of adjacent photoelectric conversion device groups, wherein the plurality of types of filters are arranged for adjacent unit groups to form a filter bank, and wherein the filter banks are arranged in a unit of N×M, where N and M are integers of one or more, facing the pixel region of the two-dimensional pixel array.
Abstract:
Monitoring stress symptoms in plants is crucial to maximize crop productivity. Nondestructive imaging of physiological changes in plants has been intensively used as invaluable tools in the agricultural industry. However, this approach requires a bulky and expensive optical instrument for capturing full spectral information and often has intrinsic limitations for quantitative analyses. Disclosed herein are a method and system for spectrometerless hyperspectral imaging that can map out detailed spatial distribution of chlorophyll content, which is a key trait for physiological condition of plants. The combination of a handheld-type imaging system and a hyperspectral reconstruction algorithm offers the simplicity for instrumentation and operation avoiding the use of an imaging spectrograph. This imaging platform can be integrated into a compact, inexpensive, and portable imager for plant biologists and ecophysiologists.
Abstract:
The present technology relates to solid-state image sensor and an imaging system which are capable of providing a solid-state image sensor and an imaging system which are capable of realizing a spectroscopic/imaging device for visible/near-infrared light having a high sensitivity and high wavelength resolution, and of achieving two-dimensional spectrum mapping with high spatial resolution. There are provided a two-dimensional pixel array, and a plurality of types of filters that are arranged facing a pixel region of the two-dimensional pixel array, the filters each including a spectrum function and a periodic fine pattern shorter than a wavelength to be detected, wherein each of the filters forms a unit which is larger than the photoelectric conversion device of each pixel on the two-dimensional pixel array, where one type of filter is arranged for a plurality of adjacent photoelectric conversion device groups, wherein the plurality of types of filters are arranged for adjacent unit groups to form a filter bank, and wherein the filter banks are arranged in a unit of N×M, where N and M are integers of one or more, facing the pixel region of the two-dimensional pixel array.
Abstract:
Determining, applying and storing model spectral response parameters used to correct colors in a digital image. The model spectral response parameters may be estimated through a recursive error analysis and applied or stored to all digital imaging devices of a particular type, thereby occupying minimal firmware storage space and permitting on the fly correction of images.
Abstract:
A fluorescence correlation spectroscopy analyzer 1 is equipped with an excitation light illuminating optical system 21, a fluorescence imaging optical system 22, a CCD camera 15, and a data analyzer 16. The excitation light illuminating optical system 21 illuminates excitation light onto a predetermined region of a measured sample S. The fluorescence imaging optical system 22 images the fluorescence generated at the measured sample S onto the photodetection surface of the CCD camera 15. The CCD camera 15 performs photoelectric conversion of the fluorescence made incident onto the photodetection surface in accordance with the respective pixels and outputs the charges generated by the photoelectric conversion as detection signals from an output terminal. The data analyzer 16 inputs the detection signals based on the charges generated at the pixels, and computes autocorrelation functions of the input detection signals according to each pixel.
Abstract:
A fluorescence correlation spectroscopy analyzer 1 is equipped with an excitation light illuminating optical system 21, a fluorescence imaging optical system 22, a CCD camera 15, and a data analyzer 16. The excitation light illuminating optical system 21 illuminates excitation light onto a predetermined region of a measured sample S. The fluorescence imaging optical system 22 images the fluorescence generated at the measured sample S onto the photodetection surface of the CCD camera 15. The CCD camera 15 performs photoelectric conversion of the fluorescence made incident onto the photodetection surface in accordance with the respective pixels and outputs the charges generated by the photoelectric conversion as detection signals from an output terminal. The data analyzer 16 inputs the detection signals based on the charges generated at the pixels, and computes autocorrelation functions of the input detection signals according to each pixel.
Abstract:
A disease diagnosis and skin age measurement apparatus includes: a first light collection unit; a second light collection unit; a spectrometer configured to measure a spectrum of the light which is collected by the second light collection unit; a spectrum data comparison unit for disease diagnosis configured to compare the spectrum measured by the spectrometer and reference spectrum data for disease diagnosis; a CCD; an image data comparison unit configured to compare the digital image converted by the CCD and a reference image; a disease diagnosis unit configured to determine whether there is a disease in the body tissue; and/or a spectrum data comparison unit for skin age measurement configured to measure skin age by comparing a spectrum measured by the spectrometer and reference spectrum data for skin age measurement, wherein the light projected onto the body tissue is collimate light.
Abstract:
A disease diagnosis and skin age measurement apparatus includes: a first light collection unit; a second light collection unit; a spectrometer configured to measure a spectrum of the light which is collected by the second light collection unit; a spectrum data comparison unit for disease diagnosis configured to compare the spectrum measured by the spectrometer and reference spectrum data for disease diagnosis; a CCD; an image data comparison unit configured to compare the digital image converted by the CCD and a reference image; a disease diagnosis unit configured to determine whether there is a disease in the body tissue; and/or a spectrum data comparison unit for skin age measurement configured to measure skin age by comparing a spectrum measured by the spectrometer and reference spectrum data for skin age measurement, wherein the light projected onto the body tissue is collimate light.
Abstract:
The present disclosure relates to the field of optical systems. The envisaged multi-scan optical system is compact and stable. The system comprises an excitation source, a hydra fiber cable, a wavelength selector, an optical element, and a detector. The excitation source is configured to emit composite light. The hydra fiber cable has a head and a plurality of tentacles, and is configured to receive the composite light via a second lens. The plurality of tentacles is configured to emit the composite light towards the wavelength selector which includes a plurality of optical slits (s1-s8) and a plurality of shutters. The wavelength selector is configured to selectively collect and filter the composite light directed by a first lens and the plurality of tentacles by means of the plurality of shutters. The detector is configured to detect the plurality of spectral line scans reflected by the optical element for spectrometric analysis.