4 results about "Imaging spectroscopy" patented technology

The invention discloses a DNA molecular marker rapid detection system and method based on imaging spectrum light splitting, and belongs to the technical field of molecular biological detection. The system comprises an exciting light array 1, a receiving and transmitting integrated detection light path 2, an optical fiber transmission array 3, a light splitting module 4, spectral data processing software 5 and a push-broom structure 6. The excitation light array 1 realizes excitation of different labeled samples; the receiving and transmitting integrated detection light path 2 reflects and focuses the array exciting light to a sample and converges fluorescence generated by the sample to an optical fiber input end; the optical fiber transmission array 3 realizes single-row multi-sample fluorescence transmission; the light splitting module 4 is used for dispersing exciting light and fluorescent light of multiple samples in a single row; the spectral analysis processing software 5 is used for acquiring and preprocessing data; the push-sweeping mechanism 6 realizes row-by-row detection of multiple rows of samples. According to the technology, high-throughput, high-sensitivity and rapid detection of the DNA molecular marker is realized. The method is suitable for the fields of fake material evidence identification, food and biological safety and the like, and has the advantages of simplicity and convenience in operation, strong anti-interference performance and the like.

The application provides a system and method for double light path switching of microscopic interference imaging spectrum and bright field imaging. In the microscopic interference imaging spectrum mode, the fluorescence generated by observing a sample is filtered by a multi-band filter box (CUBE) after passing through an infinite conjugate microscope objective, and parallel light is incident into a lateral shearing interference module. Two mutually parallel light beams obtained by the lateral shearing interference module pass through a Fourier lens group in an imaging lens, and an interference image is generated on a surface array camera. By inserting a mirror inside the lateral shearing interference structure, the interference light path is blocked, and the two coherent light beams are converted into single-path reflected light. At the same time, the multi-band filter box is removed from the microscopic light path, and a white light source is used for illumination, so that the switching from interference imaging to bright field imaging is realized. The double light path switching mode can share the illumination light path and the imaging light path, effectively utilize the space, and does not affect the layout and structure of the interference light path, thereby avoiding frequent light path adjustment.

The present application relates to a kind of fast imaging spectral measurement system and method, and the measurement system includes imaging objective, microlens surface array, optical fiber bundle, optical fiber support, lens linear array, cylindrical lens linear array, interferometer spectrometer and data processing system. Imaging objective is imaged to target, microlens surface array divides primary image surface into N sub image surfaces, lens linear array and cylindrical lens linear array are shaped to the output light of optical fiber linear array, and corresponding interference information is obtained to interferometer spectrometer, each cylindrical lens linear array corresponds one interferometer spectrometer, and the interference information of all optical fibers is obtained by simultaneously processing the output light of corresponding cylindrical lens linear array to multiple interferometer spectrometers, and the complete spectral data cube of target is obtained by processing through data processing system. The system utilizes optical fiber bundle and lens array to split image surface, converts high-dimensional data into low-dimensional data, realizes short exposure to obtain large information quantity data cube once, and improves imaging spectral measurement speed.

This invention discloses a terahertz autocorrelation near-field imaging spectroscopy system, relating to the interdisciplinary field of micro-nano photonics and terahertz photoelectric detection. The system includes: a terahertz emitter, an optical path adjustment unit, a scattering near-field scanning microscope, a terahertz receiver, a current amplifier, a lock-in amplifier, and a processor. This invention employs autocorrelation near-field imaging spectroscopy, which can obtain the time-domain information of terahertz waves by performing autocorrelation measurements on terahertz pulses. The autocorrelation near-field imaging spectroscopy method in this invention also has the ability to enhance signal intensity and suppress background noise. By controlling the optical path difference and adjusting the optical path, the two signals are accumulated to achieve a modulation of the probe resonance effect, which is beneficial for studying the resonance characteristics of the sample itself.