484007484007
發明背景 1.發明範圍 本叙明大体上是關於隱形眼鏡的領域，特 在溶液中之隱形眼鏡之前曲率半徑、後曲 疋/於 料厚度之量測。 二及中央材 10 15 經濟部智慧財產局員工消費合作社印製 20 2·先前技藝之討論 傳統技術廣泛使用於量測隱形眼鏡的光學參數 那些方法可以用於量測隱形眼鏡的直經（D)，但無方f 同時量測隱形眼鏡之前曲率半徑(FC)、後曲率 : 中央材料厚度(MT)。 工队)及 、美國寸利5，G62,297號揭示—種量測物件輪靡的方 法，其中超音波自超音波轉換器朝一由支撐構件支撐於水 中的物件發射，而在物件表面反射的波由轉換器谓測。、然 而:專利中所揭示的方法要求轉換器移動到不同的量測點 以獲得多數輪廓，藉以產生平均队^舰咖，因 此是無效率的。此量測之無效率的原因在於，它要求重覆 的參數里測，導致成本增加。此外，該專利的方法使用擴 政的起曰波束，其更易受隱形眼鏡的曲率改變之景多響，所 以不適用於複曲面透鏡。 故所欲者為，發展一種用於量測隱形眼鏡光學參數的 量測技術，其可解決前述問題。 圖式簡單說明 本紙張尺度適用中國國豕標準（CNS)A4規格（210 X 297公爱 丨裝---- I C請先閱讀背.面之注音？事項再填寫本頁) 訂. 484007 A7 ___B7__ 五、發明說明（2) 專褚於此技藝的人參考較佳實施例的下列詳細說明並 配合附圖，可更易於了解本發明，在附圖的若干視圖中， Q , , (請先閱讀背面之注意事項再填寫本頁) 相同的元件由相同的參考號碼表示，其中： 圖1示意繪示一依據本發明之量測系統的例子；而 5 圖2示意繪示圖1之支撐構件的頂視圖。； - 較佳實施例詳細說明 經濟部智慧財產局員工消費合作社印製 本發明是針對一種方法與裝置’用於同時量測透鏡特 別是複曲面透鏡之中央材料厚度與後曲率半《。超音波由 10 一轉換器朝一透鏡發射，接著反射離開透鏡φ前與後表 面。電壓與時間對照的波形是響應於所接收的反射超音 波，根據轉換器的輸出而產生。中央材料厚度的決定是藉 由量測在轉換器所接收之離開透鏡第一表面的反射波形與 離開第二表面的反射波形之間的時間差。根據時間的差 15 值，中央材料厚度可使用查詢表或資料庫而決定，查詢表 或資料庫代表在目前實驗溫度的透鏡材料之音速。此外， 垂直對分高度是藉由首先偵測離開透鏡第一表面的反射超 音波或回音與透鏡下方之一參考平面薄膜的回音之間的時 間差而量測。參考平面可以是實體的薄膜，或替代地，來 20自主要砰擊或觸發信號（其模擬來自一虛擬參考薄膜之回 音）的虛擬時間偏置。此時間差也轉換為距離量測，其代 表使用查詢表（LUT)或校準標準之透鏡的垂直對分高度。 在此事例，LUT代表透鏡座的直徑，以及浸入式介質的 聲速，其隨著溫度與浸入流体的種類而改變。根據測得的 -4- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 五、發明說明（3 ) ^直::分高度’使用一圓的弦與垂直對分高度之間的習知 成何關係，計算後曲率半徑。 多考圖1其頒不一較佳量測系統之例。一容納裝置 10 15 20 :二如::狀物，由一基部18支撐。環17較佳為介於碗 與土 °卩之間，以防止打滑。容納裝置1包含外盥内流-賴存器1在圖1讀示成—外儲存器19與-内、儲存 、、σσ 20 _存5 20裝有第一流体23a，諸如緩衝的鹽溶 夜卜儲存為19由-蓋16遮蓋，且裂有熱傳遞介質 23b ’例如蒸餾水，其大致上維持等溫，以使一測試物件 2二車:換為3的溫度穩定。在測試材料2的量測期間， 盍或盍子22安置於蓋16與内部容器20上方。較佳 地，蓋22包含一旋鈕25，以便利於將它自容納裝置^多 岐安置於容納裝置！ ±。轉換器3與一延遲介質/渡波 态28及一聚焦或聲透鏡3〇 一起配置於一外罩μ中。聚 焦透鏡使光束窄化成一小點，係在約4〇〇微米或更少的位 階’以確保量測是在透鏡表面的相對小部份進行，而非平 均分佈於整個光學區域。 外儲存器19具有-支撑構件2卜諸如圓錐推拔座， 推拔座具有一通過彼而界定的通道或槽道2U，槽道 向上突起進入内儲存器20。支持裝置27諸如鼻片9安置= 支撐構件21上。一複曲面溝槽或脊27b界定於支持器 的頂表面中，如圖2所示。-或更多徑向槽％界定二溝 槽27b中，以允許第一流体23a自由流動或通過於内儲存 器20與槽道21a之間。可使用内部界定一或更多徑向槽 本紙張尺度顧+關家標準（CNS)A4規格（210 X 297公爱BACKGROUND OF THE INVENTION 1. Scope of the Invention The present description is generally related to the field of contact lenses, especially the measurement of the radius of curvature and back curvature of contact lenses in solution. Second and Central Materials 10 15 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 20 2. Discussion of previous techniques Traditional techniques are widely used to measure the optical parameters of contact lenses. Those methods can be used to measure the straightness of contact lenses (D) , But no square f simultaneously measures the radius of curvature (FC) and back curvature of the contact lens: the thickness of the central material (MT). (Engineering Team) and the United States No. 5, G62,297 revealed a method for measuring object rotation, in which an ultrasonic wave is emitted from an ultrasonic converter toward an object supported by water in a supporting member, and the reflection of the object surface The wave is measured by the converter. However, the method disclosed in the patent requires the converter to be moved to different measurement points to obtain the majority of the contours, thereby generating an average team, and therefore inefficient. The reason for the inefficiency of this measurement is that it requires repeated measurement in the parameters, resulting in increased costs. In addition, the method of this patent uses an expanded starting beam, which is more susceptible to the scene of change in the curvature of contact lenses, so it is not suitable for toric lenses. Therefore, the desire is to develop a measurement technology for measuring the optical parameters of contact lenses, which can solve the aforementioned problems. Schematic description This paper size is applicable to China National Standard (CNS) A4 specifications (210 X 297 public love 丨 installed ---- IC please read the back. Note on the front? Matters before filling out this page) Order. 484007 A7 ___B7__ V. Description of the invention (2) Those skilled in the art can better understand the present invention by referring to the following detailed description of the preferred embodiment in conjunction with the accompanying drawings. In several views of the drawings, Q,, (Please read first Note on the back, please fill in this page again) The same components are indicated by the same reference numbers, where: Figure 1 schematically illustrates an example of a measurement system according to the present invention; and Figure 5 schematically illustrates the support member of Figure 1 top view. -The detailed description of the preferred embodiment is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economics. The present invention is directed to a method and device for measuring the thickness of the central material of the lens, especially the toric lens, and the rear curvature half. The ultrasonic waves are emitted by a 10-to-one converter toward a lens, and then reflected off the front and rear surfaces of the lens φ. The voltage versus time waveform is generated in response to the received reflected ultrasonic waves based on the output of the converter. The thickness of the central material is determined by measuring the time difference between the reflected waveform received by the converter leaving the first surface of the lens and the reflected waveform leaving the second surface. Depending on the time difference, the thickness of the central material can be determined using a lookup table or database, which represents the speed of sound of the lens material at the current experimental temperature. In addition, the vertical halving height is measured by first detecting the time difference between the reflected ultrasonic wave or echo leaving the first surface of the lens and the echo of a reference plane film below the lens. The reference plane may be a solid film, or alternatively, a virtual time offset from a main slam or trigger signal that simulates an echo from a virtual reference film. This time difference is also converted into a distance measurement, which represents the vertical halving height of the lens using a look-up table (LUT) or calibration standard. In this case, LUT stands for the diameter of the lens holder and the sound velocity of the immersion medium, which varies with temperature and the type of immersion fluid. According to the measured -4- this paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) V. Description of the invention (3) ^ Straight :: divide height 'uses a round chord and the vertical bisect height What is the relationship between learning, calculate the radius of curvature after calculation. Consider Figure 1 for an example of a better measurement system. A receiving device 10 15 20: two such as :: objects are supported by a base 18. The ring 17 is preferably between the bowl and the soil to prevent slipping. The containment device 1 contains an external toilet and an internal flow-the reservoir 1 is read as shown in Figure 1-the external reservoir 19 and the internal, storage, σσ 20 _ storage 5 20 is filled with a first fluid 23a, such as a buffered salt solution. The storage is 19 covered by the cover 16 and the heat transfer medium 23b 'is split, such as distilled water, which is maintained substantially isothermal, so that the temperature of one test object 2 and two vehicles: 3 is stable. During the measurement of the test material 2, a urn or a rafter 22 is placed above the lid 16 and the inner container 20. Preferably, the cover 22 includes a knob 25 to facilitate the placement of the self-contained device in the container! ±. The converter 3 is arranged in a housing µ together with a delay medium / wave state 28 and a focusing or acoustic lens 30. The focusing lens narrows the light beam to a small point, at an order of about 400 microns or less' to ensure that the measurement is performed on a relatively small portion of the lens surface, rather than being evenly distributed over the entire optical area. The outer reservoir 19 has a support member 2 such as a conical push-out seat. The push-out seat has a channel or channel 2U defined therethrough, the channel protruding upward into the internal reservoir 20. A support device 27 such as a nose piece 9 is placed on a support member 21. A toric groove or ridge 27b is defined in the top surface of the holder, as shown in FIG. -Or more radial grooves define two grooves 27b to allow the first fluid 23a to flow freely or pass between the inner reservoir 20 and the groove 21a. One or more radial grooves can be defined on the inside. This paper size is Gu + CNS A4 (210 X 297)
^δ^ϋϋ/ Α7 Β7 五、發明說明（5) 10 15 經 濟 部 智 慧 財 產 局 員 工 消 費 合 作 社 印 製 20 由通過春疋在支持器27中之可透過的隱形眼鏡 2與槽 27c而進入槽迢21a，但不與外儲存器a中的熱傳遞介質 2 3 b混合或交換。 連接至如形物總成丨的裝置，諸如電路，是用於決定 所使用的形眼鏡2之後曲線垂直對分高度(BC Μ)與 材料厚度(MT)。特別地，轉換器3朝隱形眼鏡2射出超 音電壓脈波產生器4諸如脈波器產生的超音波，其則被反 射離開隱形眼鏡且由轉換器接收。在一較佳實施例中，脈 波器可每秒跳動約！至約1〇,_次，每一脈波信號具有 自約5百萬赫兹至'約1〇〇百萬赫兹的頻率。特別地，隱形 ^鏡2具有—第—表面（最接近轉換器3)與-第二表面(最 遠離轉換器3)。每—表面提供—反射的超音波。—定時 閘5連接至超音電塵脈波產生器4,且與脈波信號或主要 撞擊同步:閘5也連接至處理器8、ι〇，限制來自轉換器 3之返回信號的處理’以只包含反射離開隱形眼鏡2之一 或二表面的超音波，且抑制反射離開流体仏表面的波。 -電屋用於驅動轉換器晶体或聚合物。特別地，所施 加的電I具有壓電效應’促使轉換器變形及傳送超音波。 f音波通過轉換器3與測試材料2之間的溶液或界面。一 ^分超音波反射離開隱形眼鏡的第一表面，而剩餘部分的 超音波通過隱形眼鏡2且反射離開第二表面。每一反射的 =曰波衝擊轉換器3且使之變形’藉以改變它錢與時間相 其可由電塵對照時間波形代表。來自轉換器的 -讀出由-分裂器26再生，且傳送到第一接收器卜 (請先閱讀背面之注意事項再填寫本頁} 壯衣i —.訂—.— I______ -7- 本紙張尺度適用標準（CNS)A彳規格⑵心观： 五、發明說明（6) 用於決^材料中心厚度(MT)，及傳送到第二接收器7，用 於決定水路徑（wp)，可由彼導出BCSA(}。 10 15 20 接收器6、7個別量測轉換器相對於時間的電壓輸 出，以產生MT與WP波形。隱形眼鏡的每一表面產生一 相關的反射超音波，其由一電壓對照時間波形代表。所產 生的MT波形其用於離開隱形眼鏡第—與第二表面之反射 波可用以決定隱形眼鏡的材料厚度。特別地，離開隱形眼 鏡第面之反射超音波的MT〉皮形與離開隱形眼鏡第二 表面之反射超音波的MT波形之間的時間差成正比於隱形 眼鏡的材料厚度。接收器6隨時镇測到的電壓資訊料到 -處理器 1 ’以根據離開第一與第二表面之反射超音波的 轉換器所個別接收者之間的時間差，計算隱形眼鏡的材料 厚度。特別地，自時間至對應空間距離的轉換可使用不同 厚度的物件之查詢表（LUT)或資料庫而執行。由於不同材 料與熱效應所導致的變化，故不使用絕對溫度量測。因 此，較佳為使用- LUT，其中該效應依據習知標準而校 〇 處理器10接收來自第二接收器7的輸出，且計算 WP或SAG高度。在量測以前，必須建立一參考平面， 以自該平面量測SAG高度。在一較佳實施例中，一實体 參考平面結構例如，塑膠板浸入第一流体23a中。參考板 較佳為由具有與所測試的隱形眼鏡聚合物大致上相同的舞 阻之材料製成。因為反射振幅依浸入流体與在二材料之門 的界面之反射物件之間的差異較，故此是有利的。因^ 本紙張尺度適用中國國家標 A7^ δ ^ ϋϋ / Α7 Β7 V. Description of the Invention (5) 10 15 Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 20 Entering the trough by passing through the contact lens 2 and trough 27c in the holder 27 21a, but not mixed or exchanged with the heat transfer medium 2 3 b in the external storage a. A device, such as a circuit, connected to a shaped object assembly, is used to determine the height of the vertical bisection of the curve (BCM) and the material thickness (MT) of the shaped lens 2 to be used. In particular, the converter 3 emits an ultrasonic wave generated by an ultrasonic voltage pulse generator 4 such as a pulse wave toward the contact lens 2, which is reflected off the contact lens and received by the converter. In a preferred embodiment, the pulser can beat approximately every second! To about 10,000 times, each pulse wave signal has a frequency from about 5 million hertz to 'about 100 million hertz. In particular, the invisible mirror 2 has a first surface (closest to the converter 3) and a second surface (farthest from the converter 3). Each-surface provides-reflected ultrasound. -The timing gate 5 is connected to the ultrasonic electric dust pulse wave generator 4 and is synchronized with the pulse signal or the main impact: the gate 5 is also connected to the processor 8 and ι〇, limiting the processing of the return signal from the converter 3 'to Only the ultrasonic waves reflected off one or both surfaces of the contact lens 2 are included, and the waves reflected off the surface of the fluid puppet are suppressed. -Electric houses are used to drive converter crystals or polymers. In particular, the applied electricity I has a piezoelectric effect 'which causes the converter to deform and transmit ultrasonic waves. The f sound waves pass through the solution or interface between the converter 3 and the test material 2. One minute ultrasonic reflection leaves the first surface of the contact lens, and the remaining ultrasonic waves pass through the contact lens 2 and are reflected off the second surface. Each reflected = wave impinges on the converter 3 and deforms it 'to change its money versus time. This can be represented by the electric dust versus time waveform. The -reading from the converter is regenerated by the -splitting device 26 and transmitted to the first receiver. (Please read the precautions on the back before filling this page} Zhuangyi i —.Order —. — I______ -7- Applicable Standard (CNS) A 彳 Specifications: 5. Description of the invention (6) It is used to determine the material center thickness (MT) and transmitted to the second receiver 7 to determine the water path (wp). They derived BCSA (}. 10 15 20 Receivers 6, 7 individually measure the voltage output of the converter with respect to time to generate MT and WP waveforms. Each surface of the contact lens generates a related reflected ultrasonic wave, which is formed by a The voltage is represented by the time waveform. The MT waveform generated is used to leave the first and second surfaces of the contact lens to determine the thickness of the material of the contact lens. In particular, the MT reflecting the ultrasonic wave leaving the first surface of the contact lens> The time difference between the skin shape and the MT waveform of the reflected ultrasonic wave leaving the second surface of the contact lens is directly proportional to the material thickness of the contact lens. The voltage information measured by the receiver 6 at any time is expected to the processor 1 'to First and second surface The time difference between the individual receivers of the ultrasonic reflecting converter is used to calculate the material thickness of the contact lens. In particular, the conversion from time to the corresponding spatial distance can be performed using lookup tables (LUTs) or databases of objects of different thicknesses. Because of the changes caused by different materials and thermal effects, absolute temperature measurement is not used. Therefore, it is preferable to use-LUT, where the effect is calibrated according to known standards. Processor 10 receives the output from the second receiver 7. And calculate the WP or SAG height. Before the measurement, a reference plane must be established to measure the SAG height from the plane. In a preferred embodiment, a solid reference plane structure such as a plastic plate immersed in the first fluid 23a Medium. The reference plate is preferably made of a material that has approximately the same dance resistance as the contact lens polymer tested. Because the reflection amplitude depends on the difference between the immersion fluid and the reflective object at the interface of the two material door Therefore, it is advantageous. Because ^ This paper size applies to Chinese national standard A7
對於振幅不同的信號而言，振幅增益電路9將電波形及_ 轉換為不同的角度，故如果參考板與所測試的隱形眼鏡具 有大致上相同的聲阻，則可獲得更精確的結果。例如，鋁 5板不甚佳，玻璃板較佳，而疏水性塑膠諸如定向聚烯烴更 就各種不同SAG局度的隱形眼鏡，量測離開隱形眼鏡 第一表面而到達塑膠參考板之反射超音波的〜？波形之間 2時間差，以發展校準標準或資料庫，用於在時間與距離 量測之間轉換。其後，移除實体板結構，且參考平面由在 10與塑膠板相同位置之一假想或虛擬參考平面以電子方式代 表。處理器10決定離開隱形眼鏡第一表面而到達假想參 考平面之反射超音波的Wp波形之時間差。然後，所決定 之時間差使用所發展的校準標準，轉換為一代表SAG高 度的距離量測。BC則由以下方程式決定 + - (1) 8/7 2 15其中 C是弦； R是後曲率半徑；而 h是物件的垂直對分高度。 20 物件的SAG局度已如上述而確定。當量測一隱形眼 鏡時’弦C代表在隱形眼鏡端部例如，隱形眼鏡的直徑-的固定假想平面，只要支撐件27與隱形眼鏡邊緣相交即 -9- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） C請先閱讀背面之注音？事項再填寫本頁} 裝 !.丨！ I 訂------ ---- 經濟部智慧財產局員工消費合作社印製 484007 A7For signals with different amplitudes, the amplitude gain circuit 9 converts the electrical waveform and _ into different angles, so if the reference plate and the contact lens under test have approximately the same acoustic resistance, more accurate results can be obtained. For example, the aluminum 5 plate is not very good, the glass plate is better, and hydrophobic plastics such as directional polyolefins are used for various contact lenses with different SAG localities. Measure the reflected ultrasonic waves that leave the first surface of the contact lens and reach the plastic reference plate. of~? 2 time difference between waveforms to develop a calibration standard or library for switching between time and distance measurements. Thereafter, the solid plate structure is removed and the reference plane is electronically represented by an imaginary or virtual reference plane at the same position as the plastic plate. The processor 10 decides the time difference between the Wp waveform of the reflected ultrasonic wave leaving the first surface of the contact lens and reaching the imaginary reference plane. The determined time difference is then converted into a distance measurement representing the height of the SAG using the developed calibration standard. BC is determined by the following equation +-(1) 8/7 2 15 where C is the chord; R is the radius of the rear curvature; and h is the vertical halving height of the object. The SAG locality of the object has been determined as described above. When measuring a contact lens, the 'string C' represents the fixed imaginary plane of the contact lens at the end of the contact lens, for example, as long as the support 27 intersects the edge of the contact lens. ) A4 size (210 X 297 mm) C Please read the phonetic on the back first? Fill out this page again for matters} Install !. 丨! Order I ------ ---- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 484007 A7
請 先 閱 讀 背 之 注 意 事 項 再 填 寫 本 頁Please read the notes of the memorandum before filling in this page
裝 訂 484007 A7 ___B7 五、發明說明（9) 經濟部智慧財產局員工消費合作社印製 圖式之元件代號說明 代號 說 明 1 容納裝置 2 隱形眼鏡 3 轉換器 4 超音電壓脈波產生器 5 定時閘 6 第一接收器 7 第二接收器 8 處理器 9 第一自動增益控制（AGC) 10 處理器 11 第二自動增益控制（AGC) 12 第一顯示器 13 第一警示器或指示器 14 第二顯示器 15 第二警示器或指示器 16 蓋 17 環 18 基部 19 外儲存器 20 内儲存器 21 支撐構件 21a 通道或槽道 22 蓋或蓋子 23a 第一流体 23b 熱傳遞介質 24 固定裝置 25 旋鈕 26 分裂器 27 支持裝置 27b 複曲面溝槽或脊 -11- ------------裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 484007 A7 _JB7 五、發明說明（1〇) 27c ·徑向槽 28 延遲介質/濾波器 29 外罩 30 聚焦或聲透鏡 -------------裝--------訂--------- (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Binding 484007 A7 ___B7 V. Description of the invention (9) Description of component codes printed by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives Description of code symbols 1 Receiving device 2 Contact lens 3 Converter 4 Ultrasonic voltage pulse generator 5 Timing gate 6 First receiver 7 Second receiver 8 Processor 9 First automatic gain control (AGC) 10 Processor 11 Second automatic gain control (AGC) 12 First display 13 First alarm or indicator 14 Second display 15 Second warning indicator or indicator 16 cover 17 ring 18 base 19 outer reservoir 20 inner reservoir 21 support member 21a channel or channel 22 cover or cover 23a first fluid 23b heat transfer medium 24 fixing device 25 knob 26 splitter 27 Support device 27b toric groove or ridge-11 ------------- install -------- order --------- (Please read the note on the back first Please fill in this page again for this matter) This paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) 484007 A7 _JB7 V. Description of the invention (1〇) 27c · Radial groove 28 Delay medium / filter 29 Cover 30 Focusing or acoustic lens ------------- Installation -------- Order --------- (Please read the notes on the back before filling this page) Intellectual Property Bureau of the Ministry of Economic Affairs The paper size printed by the employee consumer cooperative is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm)