TW202305346A - Prism capable of measuring concentration of liquid including an accommodating space, an interface, a first light-transmitting surface, a second light-transmitting surface, a third light-transmitting surface and a light-emitting surface - Google Patents
Prism capable of measuring concentration of liquid including an accommodating space, an interface, a first light-transmitting surface, a second light-transmitting surface, a third light-transmitting surface and a light-emitting surface Download PDFInfo
- Publication number
- TW202305346A TW202305346A TW110128133A TW110128133A TW202305346A TW 202305346 A TW202305346 A TW 202305346A TW 110128133 A TW110128133 A TW 110128133A TW 110128133 A TW110128133 A TW 110128133A TW 202305346 A TW202305346 A TW 202305346A
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- transmitting surface
- incident
- transmitting
- liquid
- Prior art date
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
本發明係有關於一種稜鏡,特別是有關於一種可量測液體濃度之稜鏡。The present invention relates to a squid, in particular to a squid capable of measuring the concentration of a liquid.
溶液係由溶質加溶劑組合而成,溶劑係用於溶解溶質,溶質係加入溶劑中而被稀釋。一般常見的溶劑包含水,溶質包含鹽、糖、顏料、或者其他化學物質。A solution is a combination of a solute and a solvent, the solvent is used to dissolve the solute, and the solute is diluted by adding it to the solvent. Common solvents include water, and solutes include salts, sugars, pigments, or other chemicals.
然而,當溶質溶解在溶劑後,若使用者欲進一步量測溶液的濃度時,則必須透過複雜的儀器設備進行測量,此將造成使用者的不便。However, after the solute is dissolved in the solvent, if the user wants to further measure the concentration of the solution, the measurement must be performed through complicated instruments, which will cause inconvenience to the user.
據此,如何提供一種可量測液體濃度的裝置已成為目前急需研究的課題。Accordingly, how to provide a device capable of measuring liquid concentration has become an urgent research topic.
鑑於上述問題,本發明揭露一種可量測液體濃度之稜鏡,包含容置空間、交界面、第一透光面、第二透光面、第三透光面及出光面。容置空間容置液體。交界面形成於容置空間的底面。第一透光面形成於容置空間的第一側面。第二透光面相對第一透光面形成於容置空間的第二側面。第三透光面相對交界面設置。出光面與交界面對應設置。當第一入射光束入射至稜鏡內部後,第一入射光束射向交界面,並由交界面反射到出光面後,由出光面射出稜鏡內部。當第二入射光束入射稜鏡內部後,第二入射光束射向第一透光面,並由第一透光面射出稜鏡內部後,入射至容置空間,且穿透容置空間內的液體,再入射至第二透光面,由第二透光面入射稜鏡內部後,射向第三透光面,由第三透光面射出稜鏡內部。In view of the above-mentioned problems, the present invention discloses a liquid crystal that can measure the concentration of a liquid, including an accommodating space, an interface, a first light-transmitting surface, a second light-transmitting surface, a third light-transmitting surface, and a light-emitting surface. The accommodation space accommodates liquid. The interface is formed on the bottom surface of the accommodation space. The first light-transmitting surface is formed on the first side of the accommodating space. The second light-transmitting surface is formed on a second side of the accommodating space opposite to the first light-transmitting surface. The third transparent surface is arranged opposite to the interface surface. The light-emitting surface and the interface are set correspondingly. After the first incident light beam is incident into the interior of the 稜鏡, the first incident light beam strikes the interface, is reflected by the interface to the light-emitting surface, and then exits the interior of the 稜鏡 from the light-emitting surface. After the second incident light beam enters the inside of the scorpion, the second incident light beam hits the first light-transmitting surface, exits the inside of the scorpion from the first light-transmitting surface, enters the accommodating space, and penetrates the interior of the accommodating space. The liquid then enters the second light-transmitting surface, enters into the interior of the 稜鏡 from the second light-transmitting surface, and then shoots to the third light-transmitting surface, and exits the interior of the 稜珡 from the third light-transmitting surface.
承上所述,本發明可量測液體濃度之稜鏡可同時或者個別檢測光線的折光度與吸光度,結合吸光與折光特性,可對溶液中的溶質進行定量分析,並且無需使用聚光元件作為光源,因而具有簡化光路校正(alignment)的優點。再者,本發明可量測液體濃度之稜鏡無需設置透鏡或目鏡等結構,可使整體結構的體積縮小。此外,本發明可量測液體濃度之稜鏡無需使用濾片或偏極片等結構,可降低生產成本。Based on the above, the present invention can measure the concentration of a liquid by measuring the refraction and absorbance of light at the same time or individually. Combining the characteristics of light absorption and refraction, the solute in the solution can be quantitatively analyzed, and there is no need to use a light-gathering element as a The light source thus has the advantage of simplifying the alignment of the optical path. Furthermore, the present invention can measure the concentration of liquid without any lens or eyepiece, so the volume of the whole structure can be reduced. In addition, the present invention can measure the concentration of the liquid without the use of structures such as filters or polarizers, which can reduce production costs.
請參閱圖1A及圖1B,其係為本發明可量測液體濃度之稜鏡的第一立體圖及第二立體圖。可量測液體濃度之稜鏡1包含容置空間10、第一透光面11、第二透光面12、第三透光面13及出光面14。容置空間10容置液體Q。交界面100形成於容置空間10的底面。第一透光面11形成於容置空間10的第一側面。第二透光面12相對第一透光面11形成於容置空間10的第二側面。第三透光面13相對交界面100設置。出光面14與交界面100對應設置。Please refer to FIG. 1A and FIG. 1B , which are the first perspective view and the second perspective view of the present invention which can measure the concentration of liquid. The
請參閱圖1C及圖1D,其係為本發明可量測液體濃度之稜鏡的光線反射示意圖及光線穿透液體示意圖。如圖1C所示,第一光源S1產生的第一入射光束L1入射至稜鏡內部後,第一入射光束L1射向交界面100,並由交界面100反射到出光面14後,由出光面14射出稜鏡內部,並入射到設置於出光面14外部的第一光線感測器D1,藉此量測液體Q的折光度。如圖1D所示,第二光源S2產生的第二入射光束L2入射稜鏡內部後,第二入射光束L2射向第一透光面11,並由第一透光面11射出稜鏡內部後,入射至容置空間10,且穿透容置空間10內的液體Q,再入射至第二透光面12,由第二透光面12入射稜鏡內部後,射向第三透光面13,由第三透光面13射出稜鏡內部,並入射到設置於第三透光面13外部的第二光線感測器D2。液體Q的濃度藉由第一光線感測器D1量測穿出該出光面14的第一入射光束L1計算,液體Q的吸光度藉由第二光線感測器D2量測穿出第三透光面13的第二入射光束D2計算。Please refer to FIG. 1C and FIG. 1D , which are schematic diagrams of light reflection and light penetration into liquid of the present invention which can measure the concentration of liquid. As shown in FIG. 1C, after the first incident light beam L1 generated by the first light source S1 enters the interior of the light source, the first incident light beam L1 is directed to the
承上所述,根據基本光學原理可知,光線進入到不同介質中,光線會產生折射現象,同時也會產生反射,因此,將第一光線感測器D1設置在出光面14的外部,藉由量測接收到反射的第一入射光束L1的光線亮度可計算出液體Q濃度。此外,當光線穿透過液體Q後,由於液體Q會吸收光線能量,使得光線亮度減弱,因此,將第二光線感測器D2設置在第三透光面13的外部,藉由量測接收到第二入射光束L2的光線亮度可計算出液體Q的吸光度。Based on the above, according to the basic optical principle, it can be known that when light enters into different media, the light will be refracted and reflected at the same time. Therefore, the first light sensor D1 is arranged outside the light-emitting
如圖1A及圖1C所示,可量測液體濃度之稜鏡1更包含一入光面15,鄰接交界面100。於本發明之一實施例中,入光面15係垂直相鄰連接交界面100。第一光源S1的第一入射光束L1經由入光面15入射至稜鏡內部,再射向交界面100。As shown in FIG. 1A and FIG. 1C , the liquid concentration measuring
如圖1B及圖1C所示,第三透光面13係鄰接入光面15。於本發明之一實施例中,第三透光面13與入光面15係垂直鄰接,且第二入射光束L2係自第三透光面13入射稜鏡內部後,再射向第一透光面11。As shown in FIG. 1B and FIG. 1C , the third light-transmitting
如圖1B及圖1C所示,出光面14係鄰接第三透光面13,且出光面14與入光面15分別鄰接於第三透光面13的相對兩側。出光面14與第三透光面13之間具有一夾角θ,且該夾角θ係為鈍角,介於105度至165度之間。於本發明之一較佳實施例中,該夾角θ為135度。As shown in FIG. 1B and FIG. 1C , the light-emitting
請參閱圖1A及圖1D,可量測液體濃度之稜鏡1更包含第一反光面16及第二反光面17。當第二光源S2產生的第二入射光束L2入射稜鏡內部後,第二入射光束L2先射向第一反光面16,並於通過第一反光面16反射後,射向第一透光面11,由第一透光面11射出稜鏡內部後,入射至容置空間10,且穿透容置空間10內的液體Q,再入射至第二透光面12,由第二透光面12入射稜鏡內部後,射向第二反光面17,再通過第二反光面17反射後,射向第三透光面13,再由第三透光面13射出稜鏡內部,並入射到設置於第三透光面13外的第二光線感測器D2。第一反光面16鄰接第一透光面11,並與第一透光面之間具有第一夾角θ1,第一夾角θ1係為銳角,介於15度至75度之間。於本發明之一較佳實施例中,第一夾角θ1較佳為45度。第一反光面16係根據第二入射光束L2入射第三透光面13的角度,以第一夾角θ1設置。第二反光面17鄰接第二透光面12,並與第二透光面12之間具有第二夾角θ2,第二夾角θ2係為銳角,介於15度至75度之間。於本發明之一較佳實施例中,第二夾角θ2較佳為45度。第二反光面17係根據第二入射光束L2入射第一反光面16後反射的角度,以第二夾角θ2設置。Please refer to FIG. 1A and FIG. 1D , the liquid concentration measuring
請參閱圖2,其係為本發明可量測液體濃度之稜鏡設至於外殼中的立體圖。在本發明之實施例中,第一反光面16及第二反光面17係分別為一三角塊的形狀設置圍繞於容置空間10周圍的兩側面,並與容置空間10的交界面100(底面)形成該容置空間10。需注意的是,雖然容置空間10在本發明的圖式中並無法以第一三角塊、第二三角塊以及另一凸塊圍繞形成封閉的空間,但事實上可量測液體濃度之稜鏡1更包含一外殼H,可量測液體濃度之稜鏡1設置於外殼H的容置空間中,且入光面15係與外殼H容置空間內的壁面貼合,因而使得可量測液體濃度之稜鏡1的容置空間10圍繞成一封閉空間,以容置液體Q。Please refer to FIG. 2 , which is a three-dimensional view of the present invention which can measure the liquid concentration and is installed in the casing. In the embodiment of the present invention, the first
請參閱圖3A至圖3C,其係為本發明可量測液體濃度之稜鏡的反射光線示意圖。如圖所示,出光面14設置在相對入光面15的一側,由交界面100反射的第一入射光束L1通過出光面14後,入射到第一光線感測器D1。由光學原理可知,欲量測通過出光面14的第一入射光束L1,必須針對出光面14的設置角度及面積進行配置。進一步而言,根據斯涅爾定律(Snell's Law),已知可量測液體濃度之稜鏡1的介質折射率以及第一入射光束L1入射到交界面100的入射角,可根據第一入射光束L1在通過不同介質折射率(不同溶液)的交界面100時所產生的反射角度範圍計算出溶液Q的介質折射率。而溶液Q折射率越大,被折射的光線越多,相對的反射光越少,第一光線感測器D1所接收到第一入射光束L1的反射光線越少(如圖3B及圖3C所示),因此,可進一步根據第一入射光束L1入射到不同溶液Q之介質折射率的範圍,所對應產生的反射角度範圍,定義、配置出光面14的預設傾斜角度θ及面積,亦即,出光面14的預設傾斜角度θ以及預設面積係根據第一入射光束L1從交界面100所產生的反射角度設置,且預設傾斜角度θ係以交界面100為基準角度設置。此外,由於溶液Q中溶質的多寡會造成溶液Q密度的不同,而溶液Q密度不同,光線產生的折射率也會不同,因此藉由量測光線進入溶液Q後的折射率可計算該溶液Q中的溶質含量,進一步計算出溶液Q濃度。在本較佳實施例中,第一光源S1係設置於入光面15的中心的法線上,以使第一入射光束L1能平均入射入光面15。而第一光線感測器D1係設置在出光面14中心的法線上,藉此能平均接收第一入射光束L1。Please refer to FIG. 3A to FIG. 3C , which are schematic diagrams of the reflected light of the present invention which can measure the concentration of liquid. As shown in the figure, the
請參閱圖4A至圖4D,其係為本發明第一入射光束入射到可量測液體濃度之稜鏡的示意圖。實際上,為了要量測第一入射光束L1入射到稜鏡後的反射光,以及量測第二光束L2穿透過液體後的光線,於本發明之實施例中,第一光源S1及第二光源S2包含鹵素燈、氣體燈、雷射、LED、或者其他發光元件。而針對第一入射光束L1入射到稜鏡後的反射光,由於使用的該些光源所產生的光束係向外360度發出,而對於前半部入射到稜鏡的光線而言,可將其區分為如圖4A至圖4D四個部分的光線。如圖4A所示,當第一入射光束L1入射到稜鏡的交界面100後,其反射光係朝向出光面14射出,並入射到第一光線感測器D1。如圖4B所示,當第一入射光束L1入射到稜鏡後,由於在入射方向上並無可使其產生反射的表面或交界面100,因此,其入射光束係直接朝向稜鏡的外部射出。如圖4C所示,當第一入射光束L1入射到稜鏡的出光面14後,由於第一入射光束L1的入射角度正好與出光面14形成全反射的角度,因而使得反射的第一入射光束L1朝向稜鏡的其它方向射入,並朝向稜鏡的外部射出。如圖4D所示,當第一入射光束L1入射到稜鏡的第三透光面13後,其產生的反射光角度並未朝向出光面14射出,而是朝向稜鏡的其它方向向外射出。據此,設置於出光面14外的第一光線感測器D1僅接收入射到稜鏡交界面100後的反射光。Please refer to FIG. 4A to FIG. 4D , which are schematic diagrams of the first incident light beam incident on the liquid concentration measuring chamber of the present invention. In fact, in order to measure the reflected light of the first incident light beam L1 incident on the liquid, and to measure the light of the second light beam L2 passing through the liquid, in the embodiment of the present invention, the first light source S1 and the second light source S1 The light source S2 includes a halogen lamp, a gas lamp, a laser, an LED, or other light emitting elements. As for the reflected light after the first incident light beam L1 is incident on the light beam, the light beams generated by the light sources used are emitted 360 degrees outward, and for the first half of the light incident on the light beam, it can be distinguished It is the light rays of four parts as shown in Fig. 4A to Fig. 4D. As shown in FIG. 4A , when the first incident light beam L1 is incident on the
請參閱圖5,其係為本發明溶液濃度與吸光度的關係示意圖。由於溶液Q中溶質的多寡也會造成吸光度的差異,因此,藉由量測溶液Q的吸光度可計算該溶液Q中的溶質含量。根據比爾-朗伯定理(Beer–Lambert law),當一平行光線垂直入射樣品後,樣品的吸光物質吸收部分光子能量,使透射光強度減弱,其中被吸收的能量(A)與樣品吸收係數(α)、光程(樣品長度)(L)、濃度(c)三著呈現正相關,表示方法如下: Please refer to FIG. 5 , which is a schematic diagram of the relationship between the concentration and absorbance of the solution of the present invention. Since the amount of solute in the solution Q will also cause the difference in absorbance, the solute content in the solution Q can be calculated by measuring the absorbance of the solution Q. According to the Beer–Lambert law, when a parallel light is incident on the sample vertically, the light-absorbing substance of the sample absorbs part of the photon energy, which weakens the intensity of the transmitted light. The absorbed energy (A) is related to the sample absorption coefficient ( α), optical path (sample length) (L), and concentration (c) are positively correlated, expressed as follows:
被吸收的能量可視為吸收度(A),因此當光線穿過樣品部分能量被樣品吸收,剩下的光線穿透該樣品,因此可以從入射光(I 0)與透射光(I)的能量差來計算出該樣品吸收度,其吸收度定義如下 The absorbed energy can be regarded as the absorbance (A), so when the light passes through the sample, part of the energy is absorbed by the sample, and the rest of the light passes through the sample, so the energy of the incident light (I 0 ) and the transmitted light (I) can be The absorbance of the sample is calculated by the difference, and the absorbance is defined as follows
再者,第二入射光束L2入射至第一反光面16後,經過第一反光面16反射後透射至溶液Q,溶液Q吸收部分光子能量,使透射光強度減弱,再經過第二反光面17反射到第二光線感測器D2。溶液Q濃度越高,被吸收的光線能量越多,因此透射光強度越弱,從光源強度與透射光的比例可得知吸收度,進而計算出溶液Q濃度。Moreover, after the second incident light beam L2 is incident on the first
於本發明之一實施例中,可量測液體濃度之稜鏡1材質包含玻璃、塑膠、或者其他可透光材料。稜鏡的交界面100、第一透光面11、第二透光面12、第三透光面13、出光面14、入光面15、第一反光面16及第二反光面17可為光滑面、粗糙面、鍍膜面、遮擋面、或者其他處理方式之表面。稜鏡加工的方式包含研磨、膠合、模造、射出、或者其他加工方式。In an embodiment of the present invention, the material of the liquid 1 that can measure the liquid concentration includes glass, plastic, or other transparent materials. The
於本發明之一實施例中,第一光線感測器D1及第二光線感測器D2包含光偵測二極體、光偵測二極體陣列、光譜儀、CCD感測器、或者其他感光元件。In one embodiment of the present invention, the first light sensor D1 and the second light sensor D2 include a photodetector diode, a photodetector diode array, a spectrometer, a CCD sensor, or other photosensitive element.
綜上所述,本發明可量測液體濃度之稜鏡可同時或者個別檢測光線的折光度與吸光度,結合吸光與折光特性,可對溶液中的溶質進行定量分析,並且無需使用聚光元件作為光源,因而具有簡化光路校正(alignment)的優點。再者,本發明可量測液體濃度之稜鏡無需設置透鏡或目鏡等結構,可使整體結構的體積縮小。此外,本發明可量測液體濃度之稜鏡無需使用濾片或偏極片等結構,可降低生產成本。In summary, the present invention can measure the concentration of a liquid by measuring the refraction and absorbance of light at the same time or individually. Combining the characteristics of light absorption and refraction, the solute in the solution can be quantitatively analyzed, and there is no need to use a light-gathering element as a The light source thus has the advantage of simplifying the alignment of the optical path. Furthermore, the present invention can measure the concentration of liquid without any lens or eyepiece, so the volume of the whole structure can be reduced. In addition, the present invention can measure the concentration of the liquid without the use of structures such as filters or polarizers, which can reduce production costs.
1:可量測液體濃度之稜鏡 10:容置空間 11:第一透光面 12:第二透光面 13:第三透光面 14:出光面 15:入光面 16:第一反光面 17:第二反光面 Q:液體 100:交界面 S1:第一光源 S2:第二光源 L1:第一入射光束 L2:第二射光束 D1:第一光線感測器 D2:第二光線感測器 H:外殼 θ:預設傾斜角度 θ1:第一夾角 θ2:第二夾角 1: It can measure the concentration of liquid 10:Accommodating space 11: The first light-transmitting surface 12: The second transparent surface 13: The third transparent surface 14: Light-emitting surface 15: light incident surface 16: The first reflective surface 17: Second reflective surface Q: liquid 100: interface S1: the first light source S2: Second light source L1: first incident beam L2: second beam D1: The first light sensor D2: Second light sensor H: shell θ: preset tilt angle θ1: the first included angle θ2: second angle
圖1A及圖1B係為本發明可量測液體濃度之稜鏡的第一立體圖及第二立體圖; 圖1C及圖1D係為本發明可量測液體濃度之稜鏡的光線反射示意圖及光線穿透液體示意圖; 圖2係為本發明可量測液體濃度之稜鏡設至於外殼中的立體圖; 圖3A至圖3C係為本發明可量測液體濃度之稜鏡的反射光線示意圖; 圖4A至圖4D係為本發明第一入射光束入射到可量測液體濃度之稜鏡的示意圖;以及 圖5係為本發明溶液濃度與吸光度的關係示意圖。 Fig. 1A and Fig. 1B are the first perspective view and the second perspective view of the present invention which can measure the concentration of liquid; Fig. 1C and Fig. 1D are schematic diagrams of light reflection and light penetration into liquid of the present invention which can measure the concentration of liquid; Fig. 2 is a three-dimensional view of the present invention which can measure the liquid concentration and is installed in the casing; 3A to 3C are schematic diagrams of the reflected light of the present invention which can measure the concentration of liquid; 4A to 4D are schematic diagrams of the first incident beam of the present invention incident on the liquid concentration can be measured; and Fig. 5 is a schematic diagram of the relationship between solution concentration and absorbance of the present invention.
1:可量測液體濃度之稜鏡 1: It can measure the concentration of liquid
10:容置空間 10:Accommodating space
11:第一透光面 11: The first light-transmitting surface
12:第二透光面 12: The second transparent surface
15:入光面 15: light incident surface
16:第一反光面 16: The first reflective surface
17:第二反光面 17: Second reflective surface
100:交界面 100: interface
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110128133A TWI780846B (en) | 2021-07-30 | 2021-07-30 | Can measure the concentration of liquid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110128133A TWI780846B (en) | 2021-07-30 | 2021-07-30 | Can measure the concentration of liquid |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI780846B TWI780846B (en) | 2022-10-11 |
TW202305346A true TW202305346A (en) | 2023-02-01 |
Family
ID=85462505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW110128133A TWI780846B (en) | 2021-07-30 | 2021-07-30 | Can measure the concentration of liquid |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI780846B (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM504953U (en) * | 2015-01-19 | 2015-07-11 | Nat Univ Tsing Hua | A portable spectroscope with multi-bands |
CN105388127B (en) * | 2015-10-30 | 2018-01-26 | 清华大学深圳研究生院 | A kind of online test method and system of each ion concentration of all-vanadium flow battery |
-
2021
- 2021-07-30 TW TW110128133A patent/TWI780846B/en active
Also Published As
Publication number | Publication date |
---|---|
TWI780846B (en) | 2022-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102138607B1 (en) | Critical angle optical sensor apparatus | |
US7271883B2 (en) | Refractive index sensor using internally reflective light beams | |
US4320291A (en) | Optical instrument | |
US4518259A (en) | Light guide reflectometer | |
JP5016677B2 (en) | Tilt sensor with optoelectronic level | |
JPS6177745A (en) | System for fluoro-optic measuring substance concentration insample | |
JPS59184843A (en) | Method and device for detecting bubble in liquid | |
WO2021212931A1 (en) | Two-dimensional, multi-point-reflection, long-optical-distance gas sensor probe, and gas sensor | |
JPS60501719A (en) | Optical-based measurement of fluid parameters | |
JP2899651B2 (en) | Light transmission type spectrometer | |
US8902425B2 (en) | Temperature-stable incoherent light source | |
TWI780846B (en) | Can measure the concentration of liquid | |
US11650150B2 (en) | Prism for measuring liquid concentration | |
US10025077B2 (en) | Device for measuring solution concentration | |
US11460711B2 (en) | Backscatter reductant anamorphic beam sampler | |
JPH083464B2 (en) | Optical measuring device | |
JP2015031525A (en) | Detector for optical measuring | |
CN215768260U (en) | Contact image sensor | |
US10384152B2 (en) | Backscatter reductant anamorphic beam sampler | |
CN215727691U (en) | Refractometer | |
JP2008249363A (en) | Turbidimeter | |
TWI792666B (en) | Measuring urine sugar concentration device | |
CN113358656A (en) | Contact image sensor | |
TWM572463U (en) | Optical fiber module | |
TWI661239B (en) | Fiber optic module |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent |