楔形光度計 的英文怎麼說
中文拼音 [xiēxíngguāngdùjì]
楔形光度計
英文
wedge photometer-
Results the occlusion contact data and graph of wedge - shaped teeth defect had the features of trauma occlusion. 42. 97 % of them has the larger axial gradient degree, 96. 09 % of them has abration in different classes, 46. 29 % missing the front teeth and 57. 03 % missing the buccal teeth
方法採用臨床物理檢查和石膏模型測量，確定楔狀缺損牙軸傾度、磨損指數、牙缺失等指標；採用計算機圖像處理技術，自行編制軟體程式及硬體系統，測試被檢光（牙合）片，分析並提取楔狀缺損牙接觸（牙合）力、面積、接觸點（牙合）應力等資料和圖形信息。Two wedge interferometers are designed that the thickness of one is higher than the other. so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift, but the incident incoherent light only result in consistent intensity signal. through a differentiating amplifier, two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals. this method largely improves the system and the ability of detection. the spacing of line fringes is a function of incident laser wavelength, by analyzing, we can extract the wavelength of incident laser. the optical unit analyzing and results also simulated with matlab
當背景光入射時，直接穿過干涉儀，僅發生強度的衰減，在兩個探測平面上產生幅度基本一致的灰度信號，通過差分放大器，相消為零，從而抑制了背景干擾。當激光信號入射，穿過干涉儀時受到調制，在探測平面上產生干涉條紋。通過所設計的存在平均厚度差的雙楔形干涉儀，兩路干涉條紋圖案出現相對移位：在兩個探測平面對應的位置上，一路出現亮紋，另一路出現暗紋。
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