This application provides a camera module, an imaging method, and an imaging apparatus. The camera module 111 this application includes a filter module and a sensor module. The filter module is configured to output target optical signals of different bands in optical signals incident on the filter module to a same pixel on the sensor module at different times. The sensor module is configured to: convert the target optical signals incident on the sensor module into electrical signals, and output the electrical signals.

A multiband IR adjunct (MIRA) sensor to spectroscopically determine the content and the concentration of chemical composition of a targeted object, includes a sensor housing, a first front optics in a first optical channel, a second front optics in the first optical channel, an acousto-optic tunable filter (AOTF), a photo detector (PD), a set of back optics in the first optical channel that focuses polarized narrow-band light beams received from the AOTF device onto the PD, the PD converting the polarized narrow-band light beams into an electrical signal, and a data acquisition unit signal-connected to the PD, the data acquisition unit collecting the electrical signals. Multiple optical channels can be provided within the housing to analyze UV/VIS/near infrared (NIR), short-wavelength infrared (SWIR), mid-wavelength infrared (MWIR), and LWIR wavelength ranges respectively.

A spectroscopic camera includes: a spectral filter having an optical area that transmits light with a predetermined wavelength from incident light; an image sensor receiving transmitted light transmitted through the spectral filter; and a casing accommodating the spectral filter and the image sensor. A direction in which the incident light enters is a first direction. The casing includes: a cylindrical lens mount which a lens that the incident light enters is attachable to and removable from and which has a center axis along the first direction; a wall having an aperture that has an aperture center coaxial with the center axis of the lens mount and that is smaller than a cylindrical inner diameter of the lens mount and equal to or smaller than an outer diameter of the optical area; a filter accommodation unit accommodating the spectral filter at such a position that the optical area covers the aperture, as viewed in a plan view along the first direction; and an imaging sensor accommodation unit provided downstream of the filter accommodation unit in the first direction and accommodating the image sensor at such a position that the image sensor overlaps the aperture as viewed in the plan view.

The invention discloses a Trace Microanalysis Microscope System for high throughput screening. A multimodal imaging sensor arrangement acquires color, multispectral, hyperspectral and multi-directional polarized imaging, independently and in combinations thereof. In one aspect of this disclosure, the multimodal acquisition is combined with a plurality of sample illumination modes, further expanding the dimensionality of the generated data. In another aspect of this invention, machine learning-based methods combining and comparing a- priori data with the acquired multimodal data space, provide unique identifiers for the composition of the analyzed target objects. In yet another aspect of this invention, projection mapping of the identified compositional features navigates secondary sampling for subsequent analyses.

An imaging system, such as a surgical microscope, laparoscope, or endoscope or integrated with these devices, includes an illuminator providing patterned white light and/or fluorescent stimulus light. The system receives and images light hyperspectrally, in embodiments using a hyperspectral imaging array, and/or using narrowband tunable filters for passing filtered received light to an imager. Embodiments may construct a 3-D surface model from stereo images, and will estimate optical properties of the target using images taken in patterned light or using other approximations obtained from white light exposures. Hyperspectral images taken under stimulus light are displayed as fluorescent images, and corrected for optical properties of tissue to provide quantitative maps of fluorophore concentration. Spectral information from hyperspectral images is processed to provide depth of fluorophore below the tissue surface. Quantitative images of fluorescence at depth are also prepared. The images are displayed to a surgeon for use in surgery.

A multiband IR adjunct (MIRA) sensor to spectroscopically determine the content and the concentration of chemical composition of a targeted object, includes a sensor housing, a first front optics in a first optical channel, a second front optics in the first optical channel, an acousto-optic tunable filter (AOTF), a photo detector (PD), a set of back optics in the first optical channel that focuses polarized narrow-band light beams received from the AOTF device onto the PD, the PD converting the polarized narrow-band light beams into an electrical signal, and a data acquisition unit signal-connected to the PD, the data acquisition unit collecting the electrical signals. Multiple optical channels can be provided within the housing to analyze UV/VIS/near infrared (NIR), short-wavelength infrared (SWIR), mid-wavelength infrared (MWIR), and LWIR wavelength ranges respectively.

An analyte detection apparatus includes a radiation source for irradiating a sample and a receiver to receive an optical Raman spectrum of radiation transmitted back from the sample, the spectrum including one or more parts of significance to an analyte to be detected and one or more parts not of significance to an analyte to be detected. The receiver includes different types of analysis device each arranged to receive a selected part of the spectrum. The different types of analysis device include at least one analysis device having high resolution and/or high signal to noise ratio for detecting a part of the spectrum of significance to the analyte to be detected and at least one second type of analysis device which provides lower resolution and/or lower signal-to-noise ratio, for detecting a part of the spectrum not of significance to the analyte to be detected.

A detector device for the remote analysis of materials, in particular hazardous materials, including at least one laser, which is designed to emit pulsed laser light onto a sample located at a detection distance, and a telescope, which is designed to collect and/or focus laser light scattered on the sample and to forward the scattered laser light into an optical spectrometer. The optical spectrometer is designed for a spectral analysis of the laser light scattered on the sample. The laser is followed by a first beam path with a first reference beam and an additional beam path with a second reference beam for the scattered laser light. A unit is provided for determining a time difference between pulses of the first reference beam and pulses of the second reference beam, wherein the detection distance can be determined from the time difference. The unit is designed to determine the detection distance in real-time.

An imaging system, such as a surgical microscope, laparoscope, or endoscope or integrated with these devices, includes an illuminator providing patterned white light and/or fluorescent stimulus light. The system receives and images light hyperspectrally, in embodiments using a hyperspectral imaging array, and/or using narrowband tunable filters for passing filtered received light to an imager. Embodiments may construct a 3-D surface model from stereo images, and will estimate optical properties of the target using images taken in patterned light or using other approximations obtained from white light exposures. Hyperspectral images taken under stimulus light are displayed as fluorescent images, and corrected for optical properties of tissue to provide quantitative maps of fluorophore concentration. Spectral information from hyperspectral images is processed to provide depth of fluorophore below the tissue surface. Quantitative images of fluorescence at depth are also prepared. The images are displayed to a surgeon for use in surgery.

The present disclosure provides a radio frequency tagging optical spectrometer, comprising: a dynamic dispersion device, the dynamic dispersion device receiving a beam comprising more than two wavelength components and being driven by driving radio frequency signals, and the dynamic dispersion device encoding the intensity of each wavelength component into the amplitude of a different beat radio frequency signal based on different driving radio frequency signals, wherein the beat frequency of the different beat radio frequency signal is equal to the frequency of the corresponding driving radio frequency signal; a single-channel photodetector for detecting the sum of beat radio frequency signals formed by adding all the beat radio frequency signals; and a processing unit for performing Fourier transform on the sum of the beat radio frequency signals to obtain a spectrum or an associated radio frequency spectrum by which the optical spectrum is obtained.