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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김기우
- 발행연도
- 2020
- 저작권
- 인하대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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This paper presents a miniature spectrometer manufactured based on a G-Fresnel Lens which is made by two optical lenses (i.e., Fresnel lens and diffraction grating) and performed by a digital image-processing algorithm focused on the color space transformation in the range of visible light. The miniature spectrometer is more economical than conventional spectrometers and composed with a miniature G-Fresnel lens, which disperses the visible light into the spectrum image and a processor platform installed an image-processing algorithm. The RGB color space which is regularly used in the digital image signal from a complementary metal?oxide?semiconductor (CMOS) or charge-coupled-device (CCD)-type image sensors is converted into the HSV color space, which is one of the most well-known methods to represent the colors using hue (H), saturation (S), and value (V) via the color space conversion algorithm. Because the HSV color space has the advantages of expressing the types of color as the H instead of three primary colors of light (i.e., red, green, blue) and also its intensity is represented as the V. Therefore, it was able to achieve the wavelength and intensity information of the visible light from spectrum image. In addition, this study yielded the wavelength of the visible light from hue with nonlinear sensitivity by experiment. In this study, we fabricate the G-Fresnel lens and introduce its potential, which is a miniature spectrometer, and also, the spectrum of mechano-luminescence (ML) which is emitted visible light by physical quantities (i.e., force, pressure, strain rate, etc) is measured by miniature spectrometer in different pressure for demonstrate the potential as a intraocular pressure monitoring system.
목차
Chapter 1 Introduction 11.1 Research background 11.2 Research contents 5Chapter 2 Fabrication of G-Fresnel Lens and ML composite 72.1 Fabrication of G-Fresnel Lens 72.2 Fabrication of Mechanoluminescence soft composite 9Chapter 3 Design of Spectrometer and Image Processing Algorithm 203.1 Design of Miniature Spectrometer 203.2 Image Processing Algorithm 223.3 Simulation of Spectrum Measuring Algorithm 25Chapter 4 Experimental validation of Miniature Spectrometer 324.1 Experimental setup of calibration Hue to Wavelength 324.2 Calibration result of Hue to Wavelength Conversion 334.3 Results of LED measuring using miniature spectrometer 34Chapter 5 Application to ML based IOP Monitoring System 455.1 IOP Monitoring System with miniature spectrometer 455.2 IOP Monitoring System using PMT sensor 465.3 Comparison of IOP Monitoring systen 48Chapter 6 Conclusion and Future work 546.1 Conclusion 546.2 Future works 55Chapter 7 Appendix: MATLAB code 58References 66
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