TH25892Y - Device for detecting explosives and suspected chemicals from a distance using Raman spectroscopy techniques - Google Patents

Abstract

OCR 10KL (05/03/2025) A device for detecting explosives and suspected chemicals from a distance using Raman spectroscopy according to the present invention comprises: a signal excitation part (100) that fires a laser beam at the explosive or suspected chemical (800), a signal collection part (200) that collects all the scattered light and sends it to a signal screening and focusing part (300) mounted behind the signal collection part (200), where the signal screening and focusing part (300) consists of three parts: a focusing lens (301) and a light separating mirror (302) and a light filtering mirror (303). On the top of the signal screening and focusing part (300) there is a target identification part (400) mounted that functions to find and identify the location of the explosive or suspected chemical (800), which comprises: A microscope camera (401) is connected to a display (402). Next to the screening and focusing section (300), a spectral separation section (500) is mounted. Next to the spectral separation section (500), a signal amplifier (600) is mounted behind it to intensify or amplify the received Raman spectrum. Finally, there is a signal conversion and processing section (700).

Claims (5)

OCR 10KL (05/03/2568) 1. The device for remote detection of explosives and suspected chemicals using Raman spectroscopy consists of a signal trigger (100) which is a high-energy laser that emits a laser beam onto the suspected explosive or chemical (800). The scattered light emitted from the suspected explosive or chemical (800) is then sent to a signal collector (200) which collects all the scattered light and sends it to a signal filtering and focusing unit (300) mounted behind the signal collector (200) and positioned aligned with the direction of the light emitted from the signal collector (200). The signal filtering and focusing unit (300) consists of three parts: a focusing lens (301) that focuses the light; a splitter mirror (302), which is a thin, circular mirror that splits the light into two paths: reflected and transmitted; and a filter mirror (303) mounted away from the splitter mirror (302) and positioned aligned with the direction of the light. The upper part of the signal filtering and focusing section (300) is attached to the targeting section (400), which contains a microscope (401) connected to a display (402). The microscope (401) is mounted on the signal collecting section (200) in a position aligned with the optical splitter (302) to match the focal distance of the light falling on the microscope's image sensor (401). Next to the signal filtering and focusing section (300) is the spectrum splitter (500), which aligns the optical path axes to split the Raman light. At the end is the transducer and processor (700), which receives and converts the Raman spectrum signal into an image or graph for display on the display (702), which is controlled by a spectrum analysis program. This section consists of: The self-cooled astronomical camera (701) is mounted with a select grism spectrograph (500) and a select night vision probe (600) mounted behind the selector spectrograph (500) to increase the intensity or amplify the received Raman spectrum. 2. A device for remote detection of explosives and suspected chemicals using Raman spectroscopy, in accordance with claim 1, in which the optical focusing lens (301) is a circular achromatic lens with a diameter of 1 or 2 inches and a focal length in the range of 30-50 millimeters. 3. A device for remote detection of explosives and suspected chemicals using Raman spectroscopy technique under claim 1 or 2, in which a splitter (302) has a diameter of 1 - 2 inches, is specially coated with properties that selectively allow light to pass through and reflect in a ratio of 9:1, 8:2 or 7:3. 4. A device for remote detection of explosives and suspected chemicals by Raman spectroscopy, in accordance with any of the claims 1-3, where the trigger (100) is a pulsed laser or a continuous laser. 5. A device for remote detection of explosives and suspected chemicals using Raman spectroscopy, pursuant to any one of claims 1-3, where the grating density is in the range of 500-1000 slits/mm and the slit width is in the range of 25-100 micrometers.