Confocal Raman spectrometer and light path device thereof
A Raman spectrometer and confocal technology, applied in the field of optical instruments, can solve problems such as difficult measurement, complicated debugging, and large excitation focus spot, and achieve the effects of simple installation and adjustment, expanded detection range, and short optical path
Active Publication Date: 2015-07-01
JIANGSU SKYRAY INSTR
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Problems solved by technology
[0004] The optical path device of the existing Raman spectrometer has disadvantages such as complex adjustment, large excitation focus spot, and difficulty in measuring liquids with weak Raman signals such as water.
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[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0023] In the following, the optical path device of the confocal Raman spectrometer according to the embodiment of the present invention will be described first with reference to the accompanying drawings.
[0024] Such as figure 1 As shown, the optical path device of the confocal Raman spectrometer according to the embodiment of the present invention includes an excitation light source system (including 101 and 102 ) arranged sequentially on the optical path, and the excitation light source system includes an excitation light so...
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Abstract
The invention discloses a confocal Raman spectrometer and a light path device thereof. The light path device comprises the following structures which are sequentially arranged on a light path: a simulating light source system, a Raman light filter group, a microscope system, a monochromator and a single-photon counting device, wherein the simulating light source system comprises a simulating light source and a beam expander; the Raman light filter group is provided with a light filter structure capable of receiving horizontal incident light at one side and forming emergent light vertical to the incident light at the other side; the microscope system comprises a microobjective lens which is arranged at the sample emergent light side of the Raman light filter group and a tube lens which is arranged on the side opposite to the sample emergent light of the Raman light filter group; a Raman signal collected from the tube lens is transmitted to the monochromator; and the single-photon counting device is used for detecting the Raman signal from the monochromator. By virtue of the light path device of the confocal Raman spectrometer, disclosed by the embodiment of the invention, the light path is extremely easy to adjust, the light route is relatively short and the detection range is relatively wide.
Description
technical field [0001] The invention relates to the field of optical instruments, in particular to a confocal Raman spectrometer and an optical path device thereof. Background technique [0002] Raman spectroscopy is a kind of scattering spectrum, which was discovered by Indian physicist Chandrasekhara Venkata Raman in 1928 and won the Nobel Prize in Physics in 1930 for it. Raman spectroscopy has been widely used as a means of analyzing and testing the molecular structure of substances. Especially after the first laser came out in 1960, the introduction of laser light sources, the improvement of weak signal detection technology and the application of computers have made Raman spectroscopy analysis Great progress has been made in many application areas. At present, Raman spectroscopy has been widely used in petroleum, food, agriculture and animal husbandry, polymers, pharmaceuticals, biology, medicine and other fields. [0003] The working principle of the Raman spectromete...
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IPC IPC(8): G01N21/65G01N21/01
Inventor 刘召贵黄冲王立峰
Owner JIANGSU SKYRAY INSTR