請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/17741
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 蔡睿哲(Jui-che Tsai) | |
dc.contributor.author | Tzu-Yu Chen | en |
dc.contributor.author | 陳姿羽 | zh_TW |
dc.date.accessioned | 2021-06-08T00:42:51Z | - |
dc.date.copyright | 2015-08-28 | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015-08-14 | |
dc.identifier.citation | [1] H. Kapadia and A. Patel, “Application of Hough transform and sub-pixel edge detection in 1-D barcode scanning,” International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, vol. 2, pp. 2173-2184, June 2013. [2] W. Y. Chen and J. W. Wang, “Nested image steganography scheme using QR-barcode technique,” Optical Engineering, vol. 48, p. 057004, May 2009. [3] E. Brinksmeier, R. Glabe, and C. Flucke, “Manufacturing of molds for replication of micro cube corner retroreflectors,” Production Engineering, vol. 2, pp. 33-38, Apr. 2008. [4] K. L. Jolic, M. K. Ghantasala, and E. C. Harvey, “Excimer laser machining of corner cube structures,” Journal of Micromechanics and Microengineering, vol. 14, pp. 388-397, 2004 [5] H. Hockel, R. Martins, J. Sung, and E. G. Johnson, “Design and fabrication of trihedral corner-cube arrays using analog exposure based on phase masks,” in Proc. SPIE Int. Soc. Opt. Eng., pp. 5720, 2005. [6] M. K. Kilaru, B. Cumby, and J. Heikenfeld, “Electrowetting retroreflectors: Scalable and wide-spectrum modulation between corner cube and scattering reflection,” Applied Physics Letters, vol. 94, p. 041108, 2009. [7] Y. F. Chen, B. J. Yang, Y. J. Lin, K. H. Chao, C. C. Chang, J. H. Huang, and J. C. Tsai, “Three-leaf trefoil-type MEMS tunable corner cube retro-reflector,” in Proc. 2011 Int. Conf. Opt. MEMS Nanophoton, pp. 181–182, Aug. 2011. [8] J. Park, J. Won, D. Kim, M. S. Jo, and J. Y. Park, “Piezoelectrically operated MEMS corner cube retroreflector for optical communications,” Journal of Micromechanics and Microengineering, vol. 22, pp. 055007, 2012. [9] V. Fakhfouri, N. Cantale, G. Mermoud, J. K. Kim, D. Boiko, E. Charbon, A. Martinoli, and J. Brugger, “Inkjet printing of SU-8 for polymer-based MEMS a case study for microlenses,” in Proc. IEEE 21st Int. Conf. Micro Electro Mech. Syst., pp. 407-410, 2008. [10] D. J. Kang, J. P. Jeong, and B. S. Bae, “Direct photofabrication of focal-length-controlled microlens array using photoinduced migration mechanisms of photosensitive sol-gel hybrid materials,” Optics Express, vol. 14, no. 18, pp. 8347-8353, Sep. 2006. [11] C. Tsou and C. Lin, “A new method for microlens fabrication by a heating encapsulated air process,” IEEE Photonics Technology Letters, vol. 18, no. 23, pp. 2490-2492, Dec. 2006. [12] K. H. Jeong, G. L. Liu, N. Chronis, and L. P. Lee, “Tunable microdoublet lens array,” Optics Express, vol. 12, no. 11, pp. 2494-2500, May 2004. [13] H. Ren, Y. H. Fan, Y. H. Lin, and S. T. Wu, “Tunable-focus microlens arrays using nanosized polymer-dispersed liquid crystal droplets,” Optical Communications, vol. 247, pp. 101-106, 2005. [14] H. Ren, H. Xianyu, S. Xu, and S. T. Wu, “Adaptive dielectric liquid lens,” Optics Express, vol. 16, no. 19, pp. 14954-14960, Sep. 2008. [15] X. Zeng, C. Li, D. Zhu, H. J. Cho, and H. Jiang, “Tunable microlens arrays actuated by various thermo-responsive hydrogel structures,” Journal of Micromechanics and Microengineering, vol. 20, pp. 115035, 2010. [16] K. H. Chao, C. D. Liao, and J. C. Tsai, “Array of cat’s eye retro-reflectors with modulability for an optical identification system,” in Proc. 2010 Int. Conf. Opt. MEMS Nanophoton, pp. 7-8, 2010. [17] K. H. Chao, C. D. Liao, B. J. Yang, and J. C. Tsai, “Fabrication and characterization of a micro tunable cat’s eye retro-reflector,” Optics Communications, pp. 5221-5224, 2011. [18] C. C. Chang, M. C. Su, Y. C. Yang, and J. C. Tsai, “Design, fabrication, and characterization of tunable cat’s eye retroreflector arrays as optical identification tags,” Journal of Lightwave Technology, vol. 32, no. 3, pp. 384-391, Feb. 2014. [19] 張智傑,《應用於光學辨識系統之可獨立調變貓眼回射器陣列》,台北:國立台灣大學光電工程學研究所碩士論文,2012。 [20] 張旭棠,《結合磁性粒子磁驅動之45°組裝鞦韆式微鏡面》,台北:國立台灣大學光電工程學研究所碩士論文,2013。 [21] https://www.norlandprod.com/adhesives/noa%2065.htm [22] T. Y. Chen, C. C. Chang, S. A. Chien, N. W. Chang, and J. C. Tsai, “Magnetically-actuated MEMS cat’s eye retroreflector for optical identification,” 2015 International Conference on Optical MEMS and Nanophotonics, Jerusalem, Israel, Aug. 2015. [23] 陳姿羽、張智傑、蔡睿哲,磁驅動之微型貓眼回射器,第19屆奈米工程暨微系統技術研討會,台北,2015年8月。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/17741 | - |
dc.description.abstract | 現今常見的辨識系統包含無線射頻辨識(RFID)系統和光學辨識系統,無線射頻辨識系統是以發散式的電磁波來傳遞訊號,不需要建立機械或光學接觸即可讀取資訊,卻容易受外界訊號干擾;光學條碼辨識系統是將入射條碼的光以散射光方式傳回,操作簡便,但訊號強度相對較弱,兩種辨識系統傳遞資訊均為全方向性(omnidirectional),資料易被從旁竊取,會有侵犯隱私的疑慮。 本論文提出光學貓眼回射器改善上述的問題,回射器可將反射光沿原入射路徑回傳,傳遞方向單一可以提高資料傳輸的隱密性。貓眼回射器由前聚焦微透鏡和後凹面反射鏡所構成,調整適當的前後模組間距,可以讓入射光線聚焦在後反射鏡上,使得反射光沿原入射方向行進。為了增加光學標籤的多樣性,調變貓眼回射器也是本文重要的一環,從文獻可知調變微透鏡的方法有許多種,例如透過腔內壓力的變化來改變透鏡的曲率,或是以液晶作為透鏡材料,施加電壓改變透鏡焦距等,大多著重於微透鏡曲率的調變,本文將結合磁性材料與經過微機電系統製程的後反射模組,利用磁鐵作為外加磁場,吸引磁性粒子進而帶動後反射鏡轉動,讓回射器能呈現ON或OFF的狀態。 本文利用磁驅動方式調變貓眼回射器,調變前回射效率可達到15 %,調變後,後反射鏡可達到最大轉動角度為25.8°,而回射效率僅剩1.72 %,藉由調控磁鐵的位置,此可獨立調變的光學元件能作為光學標籤的基礎,運用於光學辨識系統中。 | zh_TW |
dc.description.abstract | Radio frequency identification(RFID) system is widely used and applied in our daily life. The RFID system is a wireless use of electromagnetic fields to transfer information. It can function without batteries and identify tags without attaching to objects. However, due to the radiating nature of electromagnetic waves, received signals are easily to be intercepted. Optical identification is another dominant ID technology. Examples of optical ID tags include 1-D and 2-D barcodes. They can easily be read by barcode readers. However, the barcode scatters, instead of reflecting, the scanning laser beam sent from the reader. Therefore, the information contained in barcodes is not secure. An optical retro-reflector directs the light back along its incoming path instead of scattering the light. With a properly designed acceptance angle, the security of optical ID tags can be enhanced. In this thesis, we present a MEMS tunable cat’s eye retro-reflector consisting of a front micro lens and a rotational back concave reflecting mirror. Magnetic beads are attached to the rotatable unit to enable magnetic actuation. The magnetically-actuated reflecting mirror achieves a large rotation angle. The rotational angle of the concave micro mirror of the cat’s eye retro-reflector can be change from 0° to 25.8°, with the retro-reflection efficiency varying from 15 % to 1.72 %. A dynamic image is also demonstrated by changing the position of magnets. This tunable device can be used as a optical tag in identification system. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T00:42:51Z (GMT). No. of bitstreams: 1 ntu-104-R02941043-1.pdf: 6696509 bytes, checksum: 0070bd13c00d7a7c11f2387e87a2e2af (MD5) Previous issue date: 2015 | en |
dc.description.tableofcontents | 致謝 i 中文摘要 ii ABSTRACT iii 目錄 iv LIST OF FIGURES vi LIST OF TABLES x Chapter 1 緒論 1 1.1 前言 1 1.1.1 微機電系統 1 1.1.2 辨識系統 1 1.2 文獻回顧 2 1.2.1 Corner cube retro-reflector製作方法之介紹 3 1.2.2 Corner cube retro-reflector調變機制之介紹 5 1.2.3 微透鏡製作方法之介紹 7 1.2.4 微透鏡調變機制之介紹 9 1.3 研究動機 12 Chapter 2 理論分析與設計 15 2.1 貓眼回射器理論分析 15 2.2 磁性材料驅動原理分析 19 2.3 元件設計 21 Chapter 3 磁驅動貓眼回射器之製作 25 3.1 貓眼回射器製作 25 3.1.1 前聚焦微透鏡(Front micro lens)之製作 25 3.1.2 後凹面反射鏡(Back concave reflecting mirror)之製作 30 3.2 磁驅動機制製作 33 3.2.1 磁性粒子特性 33 3.2.2 磁性粒子滴製 33 Chapter 4 實驗量測與結果 35 4.1 磁驅動貓眼回射器組裝 35 4.2 未加入磁鐵調變之貓眼回射器實驗量測 37 4.2.1 回射效率計算定義 37 4.2.2 實驗架構與回射器特性分析 37 4.3 加入磁鐵調變之磁驅動貓眼回射器實驗量測 43 4.3.1 磁鐵特性分析 44 4.3.2 磁驅動調變回射器實驗架構與回射器特性分析 47 4.3.3 貓眼回射器陣列動態圖樣調變 51 Chapter 5 結論與未來展望 53 5.1 結論 53 5.2 未來展望 54 REFERENCE 55 | |
dc.language.iso | zh-TW | |
dc.title | 可運用於光學辨識系統之磁驅動微型貓眼回射器陣列 | zh_TW |
dc.title | Magnetically-driven micro cat’s eye retro-reflector array for optical identification | en |
dc.type | Thesis | |
dc.date.schoolyear | 103-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 孫家偉,呂志偉 | |
dc.subject.keyword | 貓眼回射器,磁驅動,微機電系統,光學標籤,磁性粒子, | zh_TW |
dc.subject.keyword | cat’s eye retro-reflectorm,agnetically-actuated,MEMS,magnetic beads,optical tags, | en |
dc.relation.page | 57 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2015-08-14 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
顯示於系所單位: | 光電工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-104-1.pdf 目前未授權公開取用 | 6.54 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。