CN105982639A - Intraocular pressure detection device - Google Patents
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- 238000007664 blowing Methods 0.000 claims abstract description 20
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- 238000002347 injection Methods 0.000 claims abstract description 5
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Abstract
Description
技术领域technical field
本发明有关一种针对受测者眼睛进行定压吹气的检测装置，特别是指一种能同时计算出眼压数值以及角膜厚度的眼压检测装置。The invention relates to a detection device for blowing air at a constant pressure on the eyes of a subject, in particular to an intraocular pressure detection device capable of simultaneously calculating the intraocular pressure value and corneal thickness.
背景技术Background technique
检查眼压的工具很多，常见的有压平式眼压计、眼压笔以及气压式眼压计。所谓压平式眼压计则是最可靠的眼压测量方法，于检测前须事先点上麻药在眼角膜上，再以眼压计接触眼角膜测出眼压。There are many tools for checking intraocular pressure, the common ones are applanation tonometer, eye pressure pen and barometric tonometer. The so-called applanation tonometer is the most reliable method for measuring intraocular pressure. Anesthetics must be applied to the cornea before the test, and then the tonometer should touch the cornea to measure the intraocular pressure.
所谓眼压笔则类似于压平式眼压计设计，也是一样需要接触，主要是携带方便，可以用来快速筛检，但故障率及错误率也相对较高。The so-called eye pressure pen is similar to the design of the applanation tonometer, and it also needs to be touched. The main reason is that it is easy to carry and can be used for quick screening, but the failure rate and error rate are relatively high.
而所谓气压式眼压计是将一定压力的气体瞬间射出至角膜上压平角膜，在应用电子侦测反射波的反应变化量而换算出眼压数值，其主要优点不必接触病人的角膜，但是眼压在高到卅到四十毫米汞柱以上时会误差，因此主要多用来筛检。The so-called barometric tonometer is to instantly inject a certain pressure of gas onto the cornea to flatten the cornea, and to convert the intraocular pressure value by using electronic detection of the reflected wave response change. Its main advantage is that it does not need to touch the patient's cornea, but When the intraocular pressure is as high as 30 to 40 mm Hg, there will be errors, so it is mainly used for screening.
请参图1所示，传统气压式眼压计于眼球10前方设有一狭缝板11，并于狭缝板11后方依序排设第一透镜12以及第二透镜13，由第二透镜13后方直接一感光组件14来形成一影像光路15，其中，吹气装置(图未示)装设于第一透镜12与喷嘴11之间，并将空气通过喷嘴11的空隙形成一吹气路径16直接吹射眼球10。Please refer to Fig. 1, the traditional barometric tonometer is provided with a slit plate 11 in front of the eyeball 10, and a first lens 12 and a second lens 13 are arranged in sequence behind the slit plate 11, and the second lens 13 A photosensitive assembly 14 is directly behind to form an image optical path 15, wherein an air blowing device (not shown) is installed between the first lens 12 and the nozzle 11, and air passes through the gap of the nozzle 11 to form an air blowing path 16 Blow directly to the eyeball10.
而传统气压式眼压计的检测光路17，是以一与吹气装置不同方向的红外线光源18(Infrared light source)投射至眼球10，并由一光源接收装置19(Photoelectric cell)接收由眼球10反射的信号而换算出眼压数值。The detection optical path 17 of the traditional barometric tonometer is projected to the eyeball 10 with an infrared light source 18 (Infrared light source) in a different direction from the blowing device, and is received by a light source receiving device 19 (Photoelectric cell) from the eyeball 10. The reflected signal is converted to the intraocular pressure value.
然而，传统气压式眼压计因其检测光路与吹气路径设在不同路径上，零件上的公差以及组装上的误差，将容易造成判定结果上的差异。因此，为使气压式眼压计能够较为精准的计算出眼压数值，传统气压式眼压计的检测光路与影像光路实有改良创新的必要。However, due to the fact that the detection optical path and the blowing path of the traditional air pressure tonometer are set on different paths, tolerances on parts and errors in assembly will easily cause differences in judgment results. Therefore, in order to enable the barometric tonometer to calculate the intraocular pressure more accurately, it is necessary to improve and innovate the detection light path and image light path of the traditional barometric tonometer.
发明内容Contents of the invention
本发明的主要目的在于检测光路与比对光路位于不同的装置结构，使受测者能同时检测眼球压力数值以及角膜厚度。The main purpose of the present invention is that the detection optical path and the comparison optical path are located in different device structures, so that the subject can simultaneously detect the eyeball pressure value and corneal thickness.
本发明的次要目的在于将检测光路与吹气路径设计为同轴路径上，有效降低零件公差造成的误差影响The secondary purpose of the present invention is to design the detection optical path and the air blowing path as coaxial paths, effectively reducing the influence of errors caused by part tolerances
为达所述目的，本发明有关于一种眼压检测装置，用以检测受测者的眼球压力以及角膜厚度，包含：一取样装置、一比对装置、一检测装置以及一凝视单元。To achieve the above purpose, the present invention relates to an intraocular pressure detection device, which is used to detect the eyeball pressure and corneal thickness of the subject, comprising: a sampling device, a comparison device, a detection device and a gaze unit.
所述取样装置具有一形成一通孔的开孔窗，并于内部设有一影像单元以及一喷气单元，所述影像单元通过所述开孔窗的通孔直接与眼球之间形成一影像光路。The sampling device has a perforated window forming a through hole, and an image unit and an air jet unit are arranged inside. The image unit directly forms an image light path between the eyeball through the through hole of the perforated window.
所述比对装置具有一反射镜以及一驱动装置，而所述检测装置分别连接于所述取样装置与比对装置，并通过所述取样装置的开孔窗间接与眼球之间形成一检测光路，另与所述比对装置的反射镜直接形成一比对光路，所述比对光路具有一第二中继透镜，而所述驱动装置带动所述反射镜选择性靠近或远离于所述第二中继透镜。The comparison device has a mirror and a driving device, and the detection device is respectively connected to the sampling device and the comparison device, and indirectly forms a detection optical path between the eyeball through the opening window of the sampling device , and directly form a comparison optical path with the mirror of the comparison device, the comparison optical path has a second relay lens, and the driving device drives the reflection mirror selectively close to or away from the first Two relay lenses.
其中，所述检测装置包含：一投射组件、一分光组件以及一操作组件。所述投射组件具有所述第一检测信号以及第二检测信号，而所述分光组件连接于所述投射组件，并将所述第一检测信号投射至所述检测光路以及将所述第二检测信号投射至所述比对光路，另外能接收所述第一反射信号以及第二反射信号，又所述操作组件连接所述分光组件，并接收所述第一反射信号以及第二反射信号，以换算出目前眼压数值以及角膜厚度。Wherein, the detection device includes: a projecting component, a light splitting component and an operating component. The projection assembly has the first detection signal and the second detection signal, and the light splitting assembly is connected to the projection assembly, and projects the first detection signal to the detection optical path and the second detection signal The signal is projected to the comparison optical path, and the first reflection signal and the second reflection signal can be received in addition, and the operation component is connected to the light splitting component, and receives the first reflection signal and the second reflection signal, so as to Calculate the current intraocular pressure value and corneal thickness.
此外，所述检测光路与影像光路通过一第一分光镜，使所述影像光路的感光组件与检测光路的检测装置分别位于不同轴向位置，而所述第一分光镜与开孔窗之间设有一第一中继透镜，所述喷气装置配合所述开孔窗的通孔朝向受测者眼球朝向所述开孔窗与第一中继透镜之间进行吹气形成一与所述检测光路位于同轴位置上的吹气路径。In addition, the detection optical path and the image optical path pass through a first beam splitter, so that the photosensitive component of the image optical path and the detection device of the detection optical path are located at different axial positions, and between the first beam splitter and the opening window A first relay lens is provided, and the air injection device cooperates with the through hole of the aperture window to blow air toward the subject's eyeball toward the aperture window and the first relay lens to form a detection optical path Air blowing path in coaxial position.
所述凝视单元位于所述取样装置内部，所述凝视单元通过所述开孔窗与所述眼球形成一凝视光路，而所述凝视光路与检测光路通过一第二分光镜，使所述凝视光路与检测光路位于不同轴向位置。The staring unit is located inside the sampling device, the staring unit forms a staring optical path with the eyeball through the aperture window, and the staring optical path and the detection optical path pass through a second beam splitter, so that the staring optical path It is located at a different axial position from the detection optical path.
于此较佳实施例中，当所述比对光路的长度调整至相同于所述检测光路的长度，所述检测装置通过所述第一反射信号以及第二反射信号运算出眼压数值。In this preferred embodiment, when the length of the comparison optical path is adjusted to be the same as the length of the detection optical path, the detection device calculates the intraocular pressure value through the first reflection signal and the second reflection signal.
本发明特点在于检测光路与吹气装置的吹气路径同时位于同轴路径上，有效降低零件公差造成的误差影响，此外，检测装置接受第一反射信号以及第二反射信号以同时换算出受测者眼睛的眼压数值以及角膜厚度。The feature of the present invention is that the detection optical path and the air blowing path of the blowing device are located on the coaxial path at the same time, which effectively reduces the error influence caused by the tolerance of the parts. In addition, the detection device receives the first reflection signal and the second reflection signal to simultaneously convert the measured The intraocular pressure value and corneal thickness of the patient's eye.
附图说明Description of drawings
图1为传统眼压检测装置成像的光路示意图；以及FIG. 1 is a schematic diagram of an optical path for imaging of a traditional intraocular pressure detection device; and
图2为本发明眼压检测装置的光路示意图。Fig. 2 is a schematic diagram of the optical path of the intraocular pressure detection device of the present invention.
附图标记说明：10---眼球；11---狭缝板；12---第一透镜；13---第二透镜；14---感光组件；15---影像光路；16---吹气路径；17---检测光路；18---红外线光源；19---光源接收装置；20---检测装置；21---投射组件；22---分光组件；23---操作组件；24---第一投射件；25---第二投射件；26---检测光路；261---第五中继透镜；27---比对光路；30---取样装置；31---开孔窗；311---通孔；32---影像单元；321---影像光路；321a---第三中继透镜；321b---第四中继透镜；33---喷气单元；331---吹气路径；34---凝视单元；341---凝视光路；35---第一分光镜；36---第二分光镜；37---第一中继透镜；40---比对装置；41---反射镜；42---第二中继透镜；43---驱动装置；50---眼球。Explanation of reference signs: 10---eyeball; 11---slit plate; 12---first lens; 13---second lens; 14---photosensitive component; 15---image optical path; 16 ---air blowing path; 17---detection optical path; 18---infrared light source; 19---light source receiving device; 20---detection device; 21---projection component; 22---beam splitting component; 23---operating component; 24---first projection member; 25---second projection member; 26---detection optical path; 261---fifth relay lens; 27---comparison optical path; 30---sampling device; 31---opening window; 311---through hole; 32---image unit; 321---image optical path; 321a---third relay lens; 321b--- The fourth relay lens; 33---air jet unit; 331---air blowing path; 34---gazing unit; 341---gazing optical path; 35---first beam splitter; 36---second Beam splitter; 37---first relay lens; 40---comparison device; 41---mirror; 42---second relay lens; 43---driving device; 50---eyeball .
具体实施方式detailed description
兹为便于更进一步对本发明的构造、使用及其特征有更深一层明确、详实的认识与了解，故举出较佳实施例，配合附图详细说明如下：In order to further have a clear and detailed understanding and understanding of the structure, use and characteristics of the present invention, a preferred embodiment is given, and the detailed description is as follows in conjunction with the accompanying drawings:
请参阅图2所示，本发明眼压检测装置用以检测受测者眼球压力以及角膜厚度，并主要由一检测装置20、一取样装置30以及一比对装置40所构成。Please refer to FIG. 2 , the intraocular pressure detection device of the present invention is used to detect the eyeball pressure and corneal thickness of the subject, and is mainly composed of a detection device 20 , a sampling device 30 and a comparison device 40 .
所述检测装置20主要由一投射组件21、一分光组件22、一操作组件23、一第一投射件24以及一第二投射件25所构成。所述投射组件21连接于所述分光组件22，并具有一第一检测信号以及一第二检测信号，而所述分光组件22连接所述操作组件23，所述第一投射件24与第二投射件25分别连接于所述分光组件22，其中，所述第一投射件24位于所述取样装置30内部，而所述第二投射件25位于所述比对装置40内部。The detection device 20 is mainly composed of a projecting component 21 , a beam splitting component 22 , an operating component 23 , a first projecting part 24 and a second projecting part 25 . The projection component 21 is connected to the light splitting component 22, and has a first detection signal and a second detection signal, and the light splitting component 22 is connected to the operation component 23, and the first projection component 24 and the second The projection elements 25 are respectively connected to the spectroscopic assembly 22 , wherein the first projection element 24 is located inside the sampling device 30 , and the second projection element 25 is located inside the comparison device 40 .
所述取样装置30连接于所述检测装置20，并具有一开孔窗31、一影像单元32、一喷气单元33、一凝视单元34、一第一分光镜35以及一第二分光镜36。所述开孔窗31具有一通孔311，而所述影像单元32通过所述开孔窗31的通孔311以及所述第一分光镜35直接与受测者眼球50之间形成一影像光路321，所述开孔窗31与第一分光镜35之间设有一第一中继透镜37，所述喷气单元33位于所述开孔窗31与第一中继透镜37之间，并配合所述开孔窗31的通孔311朝向受测者眼球50吹气形成一吹气路径331。于此较佳实施例中，所述喷气单元33通过活塞来回作动进行吹气，以致配合所述开孔窗31的通孔311形成所述吹气路径331。The sampling device 30 is connected to the detection device 20 and has an aperture window 31 , an image unit 32 , an air jet unit 33 , a staring unit 34 , a first beam splitter 35 and a second beam splitter 36 . The perforated window 31 has a through hole 311, and the image unit 32 forms an image optical path 321 directly between the through hole 311 of the perforated window 31 and the first beam splitter 35 and the subject's eyeball 50 , a first relay lens 37 is arranged between the aperture window 31 and the first beam splitter 35, the air jet unit 33 is located between the aperture window 31 and the first relay lens 37, and cooperates with the The through hole 311 of the opening window 31 blows air toward the eyeball 50 of the subject to form an air blowing path 331 . In this preferred embodiment, the air injection unit 33 blows air through the reciprocating movement of the piston, so that the air blowing path 331 is formed in conjunction with the through hole 311 of the perforated window 31 .
于此较佳实施例中，所述检测装置20的操作组件23设为一感光耦合组件(CCD，Charge Coupled Device)，而所述取样装置30的影像单元32设为一互补式金属氧化半导体影像传感器(CMOS image sensor)。In this preferred embodiment, the operating component 23 of the detection device 20 is set as a photosensitive coupling device (CCD, Charge Coupled Device), and the image unit 32 of the sampling device 30 is set as a CMOS image Sensor (CMOS image sensor).
所述凝视单元34依序通过所述第二分光镜36与所述开孔窗31的通孔311与受测者的眼球50之间形成一凝视光路341。所述比对装置40连接于所述检测装置20，并具有一反射镜41、一第二中继透镜42以及一驱动装置43，所述驱动装置43带动所述反射镜41能选择性靠近或远离所述第二中继透镜42。The staring unit 34 sequentially passes through the second beam splitter 36 , the through hole 311 of the apertured window 31 and the eyeball 50 of the subject to form a staring optical path 341 . The comparison device 40 is connected to the detection device 20, and has a mirror 41, a second relay lens 42 and a driving device 43, and the driving device 43 drives the mirror 41 to selectively approach or away from the second relay lens 42 .
其中，所述检测装置20通过所述分光组件22、第一投射件24、第一分光镜35、第一中继透镜37以及所述开孔窗31的通孔311与受测者眼球50之间形成一与所述吹气路径331位于同轴路径上的检测光路26，另外，所述检测装置20通过所述分光组件22、第二投射件25、所述第二中继透镜42与所述反射镜41之间形成一比对光路27。Wherein, the detection device 20 is connected between the spectroscopic assembly 22, the first projecting member 24, the first spectroscope 35, the first relay lens 37, the through hole 311 of the perforated window 31 and the eyeball 50 of the subject. A detection optical path 26 coaxial with the blowing path 331 is formed between them. In addition, the detection device 20 passes through the spectroscopic assembly 22, the second projection member 25, the second relay lens 42 and the A comparison optical path 27 is formed between the reflecting mirrors 41 .
而所述影像光路321以及检测光路26通过所述第一分光镜35，使所述影像光路321的影像单元32与检测光路26的检测装置20位于不同轴向位置，另外，所述凝视光路341与检测光路26通过所述第二分光镜36使所述凝视单元34与检测装置20位于不同轴向位置。The image optical path 321 and the detection optical path 26 pass through the first beam splitter 35, so that the image unit 32 of the image optical path 321 and the detection device 20 of the detection optical path 26 are located at different axial positions. In addition, the staring optical path 341 The staring unit 34 and the detection device 20 are located at different axial positions through the second beam splitter 36 and the detection optical path 26 .
于此较佳实施例中，所述影像光路321中具有一第三中继透镜321a以及一第四中继透镜321b，而所述第三中继透镜321a以及第四中继透镜321b位于所述影像单元32与第一分光镜35之间，另外，所述检测光路26位于所述第一分光镜35相对于所述第一中继透镜37的一侧具有一第五中继透镜261。In this preferred embodiment, the image optical path 321 has a third relay lens 321a and a fourth relay lens 321b, and the third relay lens 321a and the fourth relay lens 321b are located in the Between the image unit 32 and the first beam splitter 35 , in addition, the detection optical path 26 has a fifth relay lens 261 on a side of the first beam splitter 35 opposite to the first relay lens 37 .
于具体应用时，受测者眼球50邻近于所述开孔窗31的通孔311，并通过所述凝视光路341而注视所述凝视单元34，而所述检测装置20的投射组件21持续将所述第一检测信号与第二检测信号朝向所述分光组件22投射，所述分光组件22同时将所述第一检测信号投射以及第二检测信号分别投射至第一投射件24以及第二投射件25。In a specific application, the subject's eyeball 50 is adjacent to the through hole 311 of the aperture window 31, and stares at the staring unit 34 through the staring optical path 341, and the projection assembly 21 of the detection device 20 continues to The first detection signal and the second detection signal are projected towards the light splitting assembly 22, and the light splitting assembly 22 simultaneously projects the first detection signal and the second detection signal to the first projection member 24 and the second projection member 24 respectively. piece 25.
所述第一投射件24将所述第一检测信号朝向所述检测光路26进行投射，并经由受测者眼球50反射形成一第一反射信号，所述第一反射信号再沿着所述检测光路26投射至所述检测装置20的分光组件22。而所述驱动装置43驱动所述反射镜41移动，以改变所述反射镜41与所述第二中继透镜42之间的相对距离，进而使所述检测光路26与比对光路27的长度相同。The first projecting member 24 projects the first detection signal toward the detection optical path 26, and is reflected by the subject's eyeball 50 to form a first reflection signal, and the first reflection signal is then along the detection path. The light path 26 projects to the light splitting assembly 22 of the detection device 20 . The driving device 43 drives the mirror 41 to move to change the relative distance between the mirror 41 and the second relay lens 42, thereby making the lengths of the detection optical path 26 and the comparison optical path 27 same.
因而，所述第二投射件25将所述第二检测信号朝向所述比对光路27进行投射，并受到所述比对装置40反射镜41反射形成一对应于所述第一反射信号的第二反射信号，所述第二反射信号再沿着所述比对光路27投射至所述检测装置20的分光组件22，而所述检测装置20的分光组件22会再将所述第一反射信号以及第二反射信号传输至所述操作组件23，所述操作组件23通过所述第一反射信号以及第二反射信号开始运算受测者眼球50眼压数值以及角膜厚度。Therefore, the second projection member 25 projects the second detection signal toward the comparison optical path 27, and is reflected by the mirror 41 of the comparison device 40 to form a first reflection signal corresponding to the first reflection signal. Two reflected signals, the second reflected signal is then projected to the light splitting assembly 22 of the detection device 20 along the comparison optical path 27, and the light splitting assembly 22 of the detection device 20 will then send the first reflected signal And the second reflection signal is transmitted to the operation component 23, and the operation component 23 starts to calculate the intraocular pressure value and corneal thickness of the subject's eyeball 50 through the first reflection signal and the second reflection signal.
接下来，所述喷气单元33依照所述吹气路径331朝向受测者的眼球50吹气，使受测者的眼球50受到空气而向内压缩，以增加所述检测光路26的长度，藉此，使所述第一反射信号无法对应于所述第二反射信号，而所述比对装置40的驱动装置43会带动所述反射镜41远离所述第二中继透镜42，使所述比对光路27的长度等于检测光路26的长度，进而使所述第一反测信号与第二反射信号相互对应，致使所述检测装置20的操作组件23能通过第一反射信号以及第二反射信号讯同时计算出受测者眼压数值与角膜厚度。Next, the air jet unit 33 blows air toward the subject's eyeball 50 according to the blowing path 331, so that the subject's eyeball 50 is compressed inwardly by the air, so as to increase the length of the detection optical path 26, by Therefore, the first reflection signal cannot correspond to the second reflection signal, and the driving device 43 of the comparison device 40 will drive the mirror 41 away from the second relay lens 42, so that the The length of the comparison optical path 27 is equal to the length of the detection optical path 26, so that the first reflection signal and the second reflection signal correspond to each other, so that the operating component 23 of the detection device 20 can pass the first reflection signal and the second reflection signal. Simultaneously calculate the intraocular pressure value and corneal thickness of the subject.
综上所述，本发明藉由检测光路与吹气装置的吹气路径同时位于同轴路径上，有效降低零件公差造成的误差影响，此外，检测装置接受第一反射信号以及第二反射信号以同时换算出受测者眼睛的眼压数值以及角膜厚度。In summary, the present invention effectively reduces the influence of errors caused by component tolerances by simultaneously positioning the detection optical path and the blowing path of the blowing device on the coaxial path. In addition, the detection device receives the first reflected signal and the second reflected signal to At the same time, the intraocular pressure value and corneal thickness of the subject's eye are converted.
以上说明对本发明而言只是说明性的，而非限制性的，本领域普通技术人员理解，在不脱离权利要求所限定的精神和范围的情况下，可做出许多修改、变化或等效，但都将落入本发明的保护范围之内。The above description is only illustrative of the present invention, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the protection scope of the present invention.
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