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Optical interference measurement device design and method thereof based on TRIZ (Theory of the Solution of Inventive Problems)

An interferometric measurement and optical interference technology, applied in the field of precision measurement, can solve problems such as restricting the ability of independent innovation and lack of core technology in the detection equipment industry, and achieve the effect of convenient operation and convenient production.

Inactive Publication Date: 2013-09-11
JIANGNAN UNIV
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Problems solved by technology

[0002] At present, optical interferometer is the core technology of many large-scale detection instruments and industrial development. Its development level determines the competitiveness of detection instruments and industries. my country's detection equipment industry lacks core technologies. The backwardness has seriously restricted the further improvement of my country's independent innovation ability

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  • Optical interference measurement device design and method thereof based on TRIZ (Theory of the Solution of Inventive Problems)
  • Optical interference measurement device design and method thereof based on TRIZ (Theory of the Solution of Inventive Problems)
  • Optical interference measurement device design and method thereof based on TRIZ (Theory of the Solution of Inventive Problems)

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Embodiment Construction

[0013] in figure 1 In the experiment, the Jiman interferometer is analyzed. The interference fringe brightness of the Jiman interferometer is relatively high, but the distance between the two coherent beams A and B is related to the thickness of the parallel glass plate. Usually relatively small, which limits some experiments, so the adaptability of the instrument system is poor. According to the 2008TRIZ contradiction matrix table, the "adaptability" of the instrument system should be improved, but the "brightness" of interference fringes should be weakened (degraded). The engineering parameter numbers of "adaptability" and "brightness" are 32 and 23, respectively. In the matrix table, the number of the matrix element corresponding to the intersection of row 32 and column 23 is the recommended principle number of the invention, namely 1, 32, 35, 24, 17, 28, 26, 19. Based on the eight invention principles recommended by TRIZ as clues, seven of them are used to evolve the Jia...

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Abstract

The invention discloses a precise optical interference measurement device and a technical improvement route. A TRIZ (Theory of the Solution of Inventive Problems) and an optical interference principle are utilized in a device design. A laser device of the device produces a coherent light beam to pass through wedge semi-transparent semi-reflecting glass to be divided into two coherent light beams; one coherent light beam passes through four reflecting mirrors to increase the effective length of an interference arm and improve the measurement accuracy; the other coherent light beam passes through a phase modulator to produce a phase difference; the phase modulator is associated with the physical quantity to be tested; the two coherent light beams pass through the wedge semi-transparent semi-reflecting glass to output two interference light beams; interference is caused by the two light beams which are gathered together due to the phase difference and output light intensity changes along with transformation of the phase difference; and accordingly a value of the phase difference can be obtained through measurement of the light intensity and then a value of the physical quantity to be tested can be obtained. The optical interference measurement device design and a method thereof based on the TRIZ have important application prospects in fields of gravitational wave detection, micro-nano displacement measurement, optical fiber gyros, optical fiber sonar detection and the like.

Description

Technical field [0001] The invention relates to the field of precision measurement realized by the principle of TRIZ and optical interference, in particular to an optical interference measurement device and a method thereof. Background technique [0002] At present, optical interferometer is the core technology of many large-scale detection instruments and industrial development. Its development level determines the competitiveness of detection instruments and industry. my country's detection instrument and equipment industry lacks core technology, and its development is faced with internal and external difficulties. Backwardness has severely restricted the further improvement of my country's independent innovation capabilities. "Independent innovation, method first" is the technical route to improve my country's independent innovation capability. The National Development and Reform Commission, the Ministry of Science and Technology, the Ministry of Education and the China Associ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B9/02
Inventor 吴寿煜张宇红
Owner JIANGNAN UNIV
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