CN103217273A - Multifocal lens diopter detection system and detection method thereof - Google Patents

Multifocal lens diopter detection system and detection method thereof Download PDF

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Publication number
CN103217273A
CN103217273A CN2013100981972A CN201310098197A CN103217273A CN 103217273 A CN103217273 A CN 103217273A CN 2013100981972 A CN2013100981972 A CN 2013100981972A CN 201310098197 A CN201310098197 A CN 201310098197A CN 103217273 A CN103217273 A CN 103217273A
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lens
distance
light
command
spot
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CN2013100981972A
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张学典
侯英龙
董世坤
鲁敦科
常敏
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上海理工大学
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Abstract

The invention provides a multifocal lens diopter detection system and a detection method thereof. The multifocal lens diopter detection system is characterized by comprising a parallel light unit, a liquid crystal board provided with multiple pixel windows for forming a light beam, a first claming mechanism, an image acquisition unit for obtaining a deflection light spot, a storage part, a control part and an input display part, wherein a second distance L is formed between the deflection light spot and a base light spot, a third distance S in the direction vertical to the light beam is formed between a principal optic axis and the base light spot, and the control part controls the multiple pixel windows to be opened or closed according to a control command; an area position in the multiple pixel windows corresponding to a position of a focus on a lens is controlled according to an area command; the pixel windows are controlled to conduct an independent opening sequence according to a sequence command; the image acquisition unit is controlled to obtain the base light spot and the deflection light spot; and diopter is obtained based on a first distance r, the second distance L and the third distance S.

Description

多焦点镜片屈光度检测系统及其检测方法 Multifocal refractive lens detecting system and detecting method thereof

技术领域 FIELD

[0001] 本发明涉及一种多焦点镜片的屈光度检测系统及其方法,特别是涉及一种基于液晶板的对由平行光转化而来的光束经过具有至少一个焦点的镜片后所形成的偏折光来进行检测从而得到所述镜片的屈光度的多焦点镜片屈光度检测系统及其检测方法。 [0001] The present invention relates to a system and method for detecting refractive multifocal lens, particularly to a liquid crystal panel based on the deflection of light converted by the light from a parallel light beam having at least one through the focus lens is formed be detected to obtain a multifocal refractive lens detecting system and detecting method of the lens diopters.

背景技术 Background technique

[0002] 眼镜在矫正眼睛视力、保护眼睛健康和提高视觉功能上发挥了重要作用,也是视光学中主要的光学矫正方法。 [0002] glasses play an important role in the correction of eye sight, eye health and improve visual function, but also in major optometry optical correction method. 那么,对镜片的屈光度的检测也就成为鉴定所佩戴眼镜是否适合自己、是否合格的一种重要手段。 Then, the detection of power lens of eligibility has become an important means of identification worn glasses are suitable for them.

[0003] 镜片的屈光度传统检测技术是使用基于单点测量原理的焦度计,要求进行测量时必须使测量光与镜片的光学中心对齐。 [0003] diopter lens detection technique is the use of conventional power meter based on the principle of a single point measurement, measurement requirements necessary to align the measuring light and the optical center of the lens. 但随着眼镜片的发展,双焦点、三焦点、自由曲面和多焦点镜片相继诞生,尤其是多焦点镜片,其光学中心不再是镜片的几何中心,镜片有三个或以上焦度组成,面型也变成了非轴对称的回转面,使得镜片焦度不再单一化、规范化。 But with the development of an ophthalmic lens, bifocal, trifocal, multifocal lenses, and free-form surface were born, especially multifocal lens, the optical center is not the geometric center of the lens, a lens with a power composed of three or more, the surface-type It has become a non-axisymmetric surface of revolution, so that the power of the lens is no longer a single standardized. 现有焦度计只能实现单点或小区域的测量,在测量多焦点镜片时,必须通过镜片的移动来找到镜片小区域的焦度进行测量,然而这种方法仅能得到少数点和母线的焦度信息,对多焦点镜片的焦度评价具有很大的局限性。 Focimeter only conventional single point or small area of ​​measurement, when measuring multifocal lenses, have to find the power of the small region is measured by moving the lens of the lens, however, this method can only give a few points and the busbar the power level information, there are limitations to the power multifocal lens evaluation. 因此,针对多焦点镜片的特性,需要设计能够实现一次性测量得到整个镜片的焦度信息的方法。 Thus, for the multifocal lens characteristics, the method enables to design-time information measured power of the entire lens. 现有技术中也存在一次性对整个多焦点镜片的屈光度检测,也就是通过将由未加入待测的镜片、加入待测的镜片分别得到基准光斑图和偏折光斑图进行对比处理,可计算出待测镜片该点位置的屈光度,再将镜片所有点位置的屈光度集合,就可以一次性整体的检测出多焦点镜片的屈光度。 In the prior art there is a one-time inspection of the refractive multifocal lens, the reference is to obtain the deflection spot and spot diagrams of FIGS process by comparing the test lenses by not added, were added to the test lenses, calculated the test lens diopter point position, then all the lens diopter set point position, can be detected overall disposable multifocal lens diopters. 存在将哈特曼板应用到检测出多焦点镜片的屈光度检测中,但是利用哈特曼板时,无法形成针对镜片上某一点位置进行屈光度检测的单条单束光而是形成了多条紧密平行设置的单束光,相互干涉从而对于经过被测的镜片后在图像采集单元中所形成的偏折光斑会发生偏移,况且,在对已知焦点数量和焦点大致位置的成批量的镜片产品进行屈光度检测和合格率评定时,又需要对入射被测的单焦点或者多焦点镜片上的所有点位置进行从头到尾扫描式的检测,由于已知焦点数量和大致位置却因为无法对光束进行在设定的区域位置和扫描顺序下进行单独开启,从而造成了检测结果的不准确、检测时间和成本的浪费、效率低下。 The presence of refraction Hartmann plate is applied to a multifocal lens detected by the detector in, but utilizing Hartmann plate, can not form a single diopter single beam for detecting the position of a point on the lens but is formed of a plurality of close parallel a single beam disposed, thereby interfering with each other after the test lenses for deflecting the spot in the image acquisition unit formed in the shift will occur, Moreover, in the known focus lens product number and the focal position substantially into the bulk when the detected diopter and yield assessment, and the need for all points on the incident positions monofocal or multifocal lens measured from start to finish scanning detection, since the number and approximate location of the focus is known it can not because the light beams separate open position and a scanning region in a set order, resulting in inaccurate detection results, detected waste time and cost inefficient. 目前,仍然没有一种在一次性整体对多焦点镜片进行屈光度检测时可根据设定的区域位置和扫描顺序对入射的光束进行单独开启的系统及其方法。 The method and system may be turned on when present alone, still no multifocal lens diopter for detecting the position and time overall scanning order according to the region of the incident beam set.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种检测结果准确、高效率、可对与镜片上被测点位置相对应的入射光束进行单独开启的一次性全区域式的多焦点镜片屈光度检测系统及其检测方法。 [0004] The object of the present invention is to provide an accurate detection result, high efficiency, a one-time full-area formula multifocal refractive lens of the detection system to open a separate incident light beam on the lens position and the measured points and the corresponding Detection method.

[0005] 本发明提供的一种对由平行光转化而来的光束经过具有至少一个焦点的镜片后所形成的偏折光来进行检测从而得到镜片的屈光度的多焦点镜片屈光度检测系统,具有这样的特征:包括,平行光单元,用于形成平行光;液晶板,用于接收平行光,被设置在平行光的路径上,设有用于形成光束的复数个像素点窗口;第一夹持机构,用于使镜片被设置在光束的路径上;图像采集单元,与镜片之间具有与光束相平行的方向上的第一距离r,用于获取光束直接形成的基准光斑和光束经过镜片形成的偏折光斑;存储部,用于存储控制命令、区域命令以及顺序命令;控制部,与液晶板和图像采集单元相连接;输入显示部,用于输入设定控制命令、区域命令、顺序命令并显示屈光度,其中,平行光单元、液晶板、第一夹持机构以及图像采集单元都顺次沿着主光轴 [0005] A method of the present invention is provided by the parallel light converted from a light beam passes through the deflection of at least a focus lens is formed to have a refractive multifocal refractive lens detection system whereby the lens, has a wherein: a parallel optical unit for forming parallel light; a liquid crystal panel, for receiving the parallel light, is provided in the path of the parallel light beam with a plurality of pixels for forming a window; a first clamping mechanism, for the lenses are provided on the path of the beam; image acquisition unit, having a first distance between the lens and r in a direction parallel to the light beam, for obtaining partial beam and the reference beam spot formed directly through the lenses formed off spot; a storage unit for storing a control command, the command and the sequence command area; and a control unit, connected to the liquid crystal panel and an image acquisition unit; an input display unit for inputting a control command set, the command area, and displays the command sequence diopter, wherein the parallel light unit, a liquid crystal panel, a first clamping mechanism, and an image acquisition unit are sequentially along the main optical axis 中心投影设置,偏折光斑和基准光斑之间具有在与光束相垂直的方向上的第二距离L,主光轴和基准光斑之间具有在与光束相垂直的方向上的第三距离S,控制部用于根据控制命令来控制复数个像素点窗口进行开启或者闭合;用于根据区域命令来控制与焦点在镜片上的位置相对应的在复数个像素点窗口中的区域位置;用于根据顺序命令来控制像素点窗口进行单独开启的顺序;用于控制图像采集单元来获取基准光斑和偏折光斑;以及用于基于第一距离r、第二距离L以及第三距离S来得到屈光度。 Central projection is provided, having a second distance in a direction perpendicular to the light beam between the deflection spot and the reference spot L, the distance S in a third direction perpendicular to the light beam between the main optical axis and the reference spot, a control unit for controlling the plurality of pixels in accordance with a control command window opened or closed; controlled according to a position command area of ​​the focus on the lens position of the region corresponding to the plurality of pixels in the window; according sequential commands to control the order of individual pixel window opening; means for controlling the image acquisition unit acquires the reference spot and a deflection spot; and based on a first distance r, the second distance and the third distance L S is obtained diopters. 在本发明的多焦点镜片屈光度检测系统中,还可以具有这样的特征:其中,平行光单元包含:光源,用于形成光源;发散器,用于接收光源并形成发散的点光源,被设置在光源的路径上;准直透镜,用于接收点光源并形成平行光,被设置在点光源的路径上。 In multifocal refractive lens detection system of the present invention may also have the features: wherein the parallel light unit comprising: a light source for forming a light source; divergent for receiving a light source and form diverging point light source, is provided the path of the light source; a collimator lens for receiving the point light source to form parallel light, it is provided in the path of a point light source.

[0006] 在本发明的多焦点镜片屈光度检测系统中,还可以具有这样的特征:其中,平行光单元包含:光源器,用于形成光源;发散器,用于接收光源并形成发散的点光源,被设置在光源的路径上;准直透镜,用于接收点光源并形成平行光,被设置在点光源的路径上,准直透镜具有的第一直径H大于镜片具有的第二直径h。 [0006] In a multifocal refractive lens detection system of the present invention may also have the features: wherein the parallel light unit comprising: a light source, a light source for forming; divergent for receiving a light source and forming a diverging point light source , disposed on the path of the light source; a collimator lens for receiving the point light source to form parallel light, is provided on a path of a point light source, a collimator lens having a first lens having a diameter H is greater than a second diameter h.

[0007] 在本发明的多焦点镜片屈光度检测系统中,还可以具有这样的特征,还包括:第二夹持机构,用于安装图像采集单元,其中,控制部分别与第一夹持机构、第二夹持机构连接,用于调节第一距离r和二距离L的大小。 [0007] In a multifocal refractive lens detection system of the present invention may also have such characteristics, further comprising: a second clamping mechanism for mounting the image acquisition unit, wherein the control portions of the first clamping means, a second clamping mechanism is connected, for adjusting the first distance r and the distance L of two sizes.

[0008] 另外,本发明还提供了一种利用上述多焦点镜片屈光度检测系统的检测方法,具有这样的特征,具有以下步骤:采用平行光单元来形成平行光,利用所述液晶板来接受所述平行光入射;采用控制部根据所述控制命令来控制液晶板中所述复数个像素点窗口全部打开,利用图像采集单元获取未经镜片而直接入射的光束所形成的基准光斑,采用控制部控制图像采集单元获取基准光斑,来确定复数个像素点窗口中的任意一个像素点窗口的位置;保持第一距离,放置待测的镜片在第一夹持机构上,采用控制部根据控制命令、区域命令以及开启顺序命令来控制区域位置中的每一个像素点窗口依次按照顺序来进行单独开启,再采用控制部按照区域位置、顺序来分别获取每一个与单独开启所形成的光束相对应形成的偏折光斑;利用控制部通过按照区域位置、顺 [0008] Further, the present invention also provides the above method for detecting multifocal refractive lens using a detection system having such features, comprising the following steps: to receive light to form parallel using parallel light unit using the liquid crystal panel is said parallel light is incident; the control unit using the control unit in accordance with a control command to control liquid crystal panel of the plurality of pixels in the window fully opened, with the image acquisition unit acquires the reference spot lens without directly incident light beam is formed using controls the image acquisition unit acquires the reference spot to determine the location of any of a plurality of pixels of the window in the window of pixel points; holding a first distance, to be measured is placed on the first lens holding means, using the control unit according to the control command, area command and opening sequence of commands to control each pixel window area position sequentially in order to open a separate, and then using the control unit in accordance with the area location, sequentially acquired separately for each beam with a separate opening formed corresponding to the formed deflecting the spot; by the control unit in accordance with the position of the region, cis 来比对每个基准光斑的位置和相对应的每一个偏折光斑的位置来顺次获取每个第二距离、第三距离;利用控制部基于顺次得到的每个第一距离、第二距离以及第三距离得出待测的镜片的屈光度。 To match the locations of the reference position of each spot and each light spot corresponding to a deflection to sequentially obtain each of the second distance, third distance; by the control unit based on each obtained sequentially from the first, second and a third distance derived from the measured power lens.

[0009] 本发明的效果在于: [0009] The effect of the present invention:

[0010] 本发明提供的多焦点镜片屈光度检测系统及其检测方法通过实现对与镜片上被测点位置相对应的入射光束进行单独开启相较已有技术具有检测结果准确精度高、节约检测时间和成本效率高的优势。 [0010] multifocal refractive lens detecting system and detecting method of the present invention provides a high accuracy detection result of the accuracy achieved by the position of the measured point with the corresponding beam incident on the lens compared to a single prior art open, save detection time and cost-efficiency advantages. 在设置好被测镜片后通过采用液晶板可以对平行光入射后所形成的每一条光束进行单独控制并且确保当任意一条像素点窗口开启时其他像素点窗口都处于闭合状态,即入射被测的镜片的光束是单一的被单独开启,排除了其他光束的干扰,根据显示输入部输入的控制命令、区域命令以及顺序命令使对镜片上点位置的扫描更具有针对性更高效,解决了盲目浪费时间成本、互相干涉精度差的问题。 Can be individually controlled and set in the lens under test by using the liquid crystal panel for each light beam is incident parallel light spot formed by the window to ensure that a pixel is turned on when any of the other window pixels are in a closed state, i.e. the measured incident lens is a single light beam is turned on individually, unaffected by other beam scanning point position of the lens in accordance with the display control command input section, and the sequence command area command more efficiently targeted to solve the blind waste time cost, mutual interference problem of poor accuracy.

附图说明 BRIEF DESCRIPTION

[0011] 图1是本发明的具体实施例中多焦点镜片屈光度检测系统的示意图; [0011] FIG. 1 is a schematic view of a multifocal refractive lens detection system specific embodiment of the present invention;

[0012] 图2是本发明的具体实施例中多焦点镜片屈光度检测系统的原理示意图; [0012] FIG. 2 is a simplified schematic embodiment multifocal refractive lens detection system specific embodiment of the present invention;

[0013] 图3是本发明的具体实施例中多焦点镜片屈光度检测方法的流程图。 [0013] FIG. 3 is a flowchart of a multifocal refractive lens detection method of a specific embodiment of the present invention.

[0014] 具体实施案例 [0014] DETAILED DESCRIPTION Case

[0015] 下面结合附图和实施例对本发明做进一步说明。 Drawings and embodiments of the present invention will be further described [0015] below in conjunction.

[0016] 图1是本发明的具体实施例中多焦点镜片屈光度检测系统的示意图。 [0016] FIG. 1 is a schematic view of a multifocal refractive lens detection system specific embodiment of the present invention.

[0017] 如图1所示,多焦点镜片屈光度检测系统100设有用于形成平行光200的平行光单元1,平行光单元I包含光源器2、发散器3以及准直透镜4,光源器2采用632nm的激光光源2a,用于形成具有特定波长的激光300。 [0017] 1, multifocal refractive lens detection system 100 is provided with means for forming a parallel beam of parallel light 200 2, 3 and diverging collimator lens 4, the light source unit 21, the parallel light unit includes a light source unit I using 632nm laser light source 2a, for forming a laser 300 having a specific wavelength. 发散器3采用发散角为30°的空间滤波器3a,发散器3被设置在激光300的路径上,用于接收激光300并形成发散的点光源400。 3 divergent angle of 30 ° by divergent spatial filter 3a, emanator 3 is disposed on the path of the laser 300, for receiving the laser light source 300 and the diverging point 400 is formed. 准直透镜4被设置在点光源400的路径上,用于接收点光源400并形成平行光200,空间滤波器3a使线状的激光300转化成可覆盖具有第一直径H为80mm和焦距IOOmm的准直透镜4的点光源400。 Collimator lens 4 is disposed on the path of the point light source 400, for receiving the point light source 400 and forms parallel light 200, the linear 3a spatial filter 300 is converted into laser light may cover having a first diameter and a focal length of 80mm IOOmm H the collimator lens 4 is a point light source 400.

[0018] 多焦点镜片屈光度检测系统100设有用于接收平行光200的液晶板5,液晶板5采用LCD,液晶板5被设置在平行光200的路径上,液晶板5设有十行十列组成的可开启或者闭合的一百个像素点窗口6,顺次为第一行一列像素点窗口7、第一行二列像素点窗口8至第十行九列像素点窗口9、第十行十列像素点窗口10,当平行光200通过液晶板5后,当一百个像素点窗口6全部打开则平行光200转化为相对应的一百条平行设置的光束11,当一百个像素点窗口6中的某一个像素点窗口6单独开启时平行光则转化为相对应的单独开启的光束,当第一行一列像素点窗口6开启时形成了图中未显不的第一行一列光束,顺次下去,当第十行十列像素点窗口10开启时形成了图中未显示的第十行十列光束,即、开启的像素点窗口6与相对应的所通过而形成的光束11的数量和位置都一致。 [0018] multifocal refractive lens detection system 100 is provided for receiving the parallel light 200 of the liquid crystal panel 5, the liquid crystal panel 5 using LCD, the liquid crystal panel 5 is disposed in the path of the parallel light 200, the liquid crystal panel 5 is provided with ten rows ten the composition may be opened or closed one hundred pixels of the window 6, the first row is sequentially a pixel window 7, the first row of pixels two to the tenth row window 8 nine pixels window 9, the tenth line ten pixels in the window 10, when the parallel light 200 by the liquid crystal panel 5, when one hundred pixels of all open windows 6 200 converted light beam 11 arranged parallel to one hundred corresponding to the parallel, when one hundred pixels the parallel light is transformed point when the window one pixel window 66 individually open to open a separate light beams corresponding to the formation of a first row in FIG not significant not when the first line of a pixel in the window 6 opened a beam sequentially down, when the ten pixels in the tenth row window opening 10 formed in the tenth row of ten, not shown in FIG beam, i.e., a pixel window opening 6 corresponding to the light beam formed by the number and position 11 are the same.

[0019] 多焦点镜片屈光度检测系统100设有第一夹持机构12,用于安装夹持镜片13,镜片13可被安装在第一夹持机构12上或者从第一夹持机构12上拆卸下,被测的镜片13通过第一夹持机构12被设置在光束11的路径上。 [0019] multifocal refractive lens detection system 100 is provided with a first clamping means 12, for mounting the lens holder 13, the lens 13 may be mounted on the first clamping mechanism 12 or detached from the first clamping mechanism 12 , the lens 13 measured by the first clamping means 12 is disposed in the path of the beam 11.

[0020]当没有镜片13被设置在第一夹持机构12上时,光束11直接入射到光束图像采集单元14上形成基准光斑A15。 [0020] When the lens 13 is not provided on the first clamping mechanism 12 when the beam 11 is directly incident to the image pickup unit 14 the beam spot formed reference A15. 当镜片13被设置在第一夹持机构12上,光束11经过镜片13发生偏折在图像米集单兀14上形成偏折光斑B16。 When the lens 13 is disposed on the first clamping means 12, the light beam 11 through lens 13 forming a deflection occurs in the deflection of a spot image B16 Wu single set 14 meters. 图像米集单兀14米用每秒2000中贞的高速CXD摄像机14a,用于获取同一条光束11所形成的基准光斑A15和偏折光斑B16,图像采集单元14与镜片13之间具有与光束11相平行的方向上的第一距离rl7为200mm,偏折光斑B16和基准光斑A15之间具有在与光束11相垂直的方向上的第二距离L18为5mm。 Wu meters single image set 14 meters per second with the high-speed CXD 2000 Chen cameras 14a, and for acquiring a reference spot deflection A15 B16 same spot formed by the beam 11, and the image acquisition unit has a light beam between the lenses 14 and 13 a first distance in a direction parallel RL7 11 is 200mm, a spot having a deflection between A15 and B16 in the second reference distance with the light spot 11 on the direction perpendicular to the light beam L18 is 5mm. 准直透镜4具有的第一直径H大于镜片13具有的第二直径h,使平行光200所形成的光束11的扫描范围能覆盖整个镜片13。 A collimator lens 4 having a first lens 13 having a diameter H is greater than a second diameter h, 200 formed parallel light beam 11 scan range of 13 cover the entire lens. 多焦点镜片屈光度检测系统100还包括第二夹持机构19,用于安装图像采集单元14,控制部20分别与第一夹持机构12、第二夹持机构19连接,通过控制第一夹持机构12、第二夹持机构19的来回移动来改变调节第一距离17和第二距离18的大小,当第一夹持机构12位置固定,光束11经过待测的镜片13后形成偏折光21,偏折角度固定,此时调节第二夹持机构13往与镜片13相远的方向移动,那么第一距离13和第二距离18就因此增大了,反之往与镜片13相近的方向移动则减小。 Multifocal refractive lens detection system 100 further includes a second clamping means 19, 14, a control section for mounting the image acquisition unit 12, the second clamping mechanism 19 are respectively connected to the first clamping mechanism 20, by controlling the first clamping mechanism 12, the second clamping mechanism 19 is moved back and forth to vary the first distance 17 and the second adjustment distance of the size 18, the first clamping means when the fixing position 12, the beam 11 through a lens to be measured 13 is formed after the light deflector 21 , fixed deflection angle, this time adjusting the second clamping mechanism 13 moves the lens 13 with respect to the distal direction, the first distance and the second distance 18 to 13 thus increasing, contrary to the direction of movement of the lens 13 close it is reduced.

[0021] 存储部22中存储有控制命令22a、区域命令22b以及开启的顺序命令22c。 [0021] The storage unit 22 stores control commands 22a, 22b and sequence command area command opening 22c. 输入显示部23用于键入设定控制命令22a、区域命令22b、顺序命令22c,并且可用于显示整体的镜片13的屈光度。 An input unit 23 for entering display control command set 22a, the command region 22b, the order command 22c, and the overall refractive power of the lens 13 may be used for display. 存储部22、输入显示部23分别与控制部20连接,控制部20与液晶板 A storage unit 22, the input and display unit 23 are connected to the control unit 20, the control unit 20 and the liquid crystal panel

5、图像采集单元14、第一夹持机构12以及第二夹持机构19连接。 5, the image acquisition unit 14, a first clamping mechanism 12 and the second clamping mechanism 19 is connected.

[0022] 平行光单元1、液晶板5、镜片13以及图像采集单元14都顺次沿着主光轴24呈中心投影设置,也就是说,平行光单元I的中心点、液晶板5的中心点、镜片13的中心点以及图像采集单元14的中心点都呈中心投影设置,主光轴24和基准光斑A15之间具有在与光束11相垂直的方向上的第三距离S25为10mm。 [0022] parallel light unit 1, a liquid crystal panel 5, a lens 13 and an image acquisition unit 14 are sequentially disposed along the center of the projection 24 as a main optical axis, i.e., the center point of the parallel light unit I, the center of the liquid crystal panel 5 point, the center point of the lens 13 and an image acquisition unit radiate central projection center point 14 is provided, having a main optical axis 24 between the reference and the third distance S25 A15 spot light beam 11 in a direction perpendicular to 10mm.

[0023] 控制部20会根据控制命令22a来控制一百个像素点窗口6的每一个像素点窗口6进行开启或者闭合,可以单独一个像素点窗口6的单独开启或者任意至少两个像素点窗口6的开启或者闭合。 [0023] 20 control unit 22a based on a control command to control one hundred pixels of each pixel window 6 window 6 opened or closed, a pixel window can be individually turned on or any at least two separate pixels of the window 6 6. open or closed.

[0024] 控制部20将根据设定的区域命令22b来控制与图中未显示的焦点在镜片13上的位置相对应的在一百个像素点窗口6中的区域位置,根据设定的区域命令22b来对镜片13上已知的具有焦点的大致区域范围进行针对性的光束11入射扫描,适合同批次同产品型号的镜片13屈光度的合格率检验。 [0024] The control unit 20 will command the set region 22b to control the focus position not shown on the lens 13 in a region corresponding to the position of the one hundred pixels in the window 6, according to the set region 22b command targeted to the scanning beam 11 is incident on the lens 13 of a substantially known region having a focus range, for the same batch of the same product type lens inspection yield of 13 diopters.

[0025] 控制部20根据设定的顺序命令22c来控制像素点窗口6进行单独开启的顺序,当对整个镜片13或者已定的区域位置进行光束11入射扫描时扫描顺序可进行选择调节。 [0025] The command control section 20 controls the order setting pixel 22c of the window 6 in order to open a separate, when the beam 11 is incident on the scanning position 13 has been given or the entire area of ​​the lens can be selected scan order adjusted.

[0026] 控制部20通过控制连接的图像采集单元14来获取进行入射扫描的每一条光束的基准光斑A15和偏折光斑B16,根据基准光斑A15和偏折光斑B16之间的第二距离25,采集来的第一距离rl7为200mm、第二距离L18为5mm以及第三距离S25为IOmm来计算得出被测的镜片13的屈光度为1.55D。 [0026] The control section 2014 acquires the deflection spot and the reference spot A15 B16 is incident scanning light beam by controlling each image acquisition unit is connected, according to a second distance between the deflection spot and the reference spot A15 B16 25, the first distance is rl7 collected to 200mm, the second distance and the third distance is 5mm L18 S25 is calculated to IOmm measured power lens 13 is 1.55D.

[0027] 图2是本发明的具体实施例中多焦点镜片屈光度检测系统的原理示意图。 [0027] FIG. 2 is a schematic diagram illustrating the principles of multifocal refractive lens detection system of the particular embodiment of the present invention.

[0028] 根据几何光学原理,光的传播方向会因传输介质的密度不同而发生改变,这种现象就是屈光现象,表征屈光能力的单位就是屈光度,即“焦度”。 [0028] According to geometrical optics, the propagation direction of the light may be changed due to the transmission media of different densities, such a phenomenon is the phenomenon of refraction, the unit is characterized diopter optical power, i.e., "power." 因为镜片的前后两个镜面可以分别得到不同的光线汇聚和发散能力,因此镜片有前焦度和后焦度的区分,一般所说的镜片的屈光度指的是镜片的后顶焦度。 Because the front and rear of the lens mirrors can be two different light converging and diverging capacity, respectively, so a front lens power and the power of discrimination, the diopter of said lens generally refers to a back vertex power of the lens. 如图2所示,在没有待测镜片13设置在用于入射的光束11的光路上时,光束11直接入射C⑶摄像机14a形成了基准光斑A15。 2, the lens 13 is provided without the test in the light path of the beam 11 for the incident beam 11 is incident directly C⑶ camera 14a is formed a reference spot A15. 用于入射的光束11在待测的镜片13上的入射点26为C点,光束11经过C入射点26后发生偏折形成偏折光21,偏折光21在CXD摄像机14a上入射形成了偏折光斑B16。 For incident light beam 11 is incident on the measurement point 13 of the lens 26 to point C, point of incidence of the beam deflector 11 is formed through C occurred after 26 deflect light 21, the light deflector 21 is incident on the CXD camera 14a is formed a deflection spot B16. CXD摄像机14a与镜片13之间具有与光束11相平行的方向上的第一距离rl7为200mm,偏折光斑B16和基准光斑A15之间具有在与光束11相垂直的方向上的第二距离L18为5mm,在焦度面27上可得出主光轴24和基准光斑A15之间具有在与光束11相垂直的方向上的第三距离S25为10mm。 A second distance with a first distance in a direction parallel to the beam 11 between the lens 13 CXD rl7 camera 14a is 200mm, between the deflection spot and the reference spot A15 B16 on a beam 11 having a direction perpendicular to the L18 is 5mm, the power of the surface 27 may be obtained having an optical axis 24 between the main spot and the reference A15 third distance S25 in the direction perpendicular to the light beam 11 to 10mm. 则可以根据屈光度公式D=L/rs得出上述入射点26C点的屈光度为1.55D。 May be obtained according to the incident point diopter formula D = L / rs 26C point diopter 1.55D. 如上第一距离17和第二距离18是可被调节的,当待测镜片13位置固定,通过调节CXD摄像机14a来改变第一距离17和第二距离18,如图2所示,第一距离17的最大值不可大于焦度面27与镜片13之间的距离为宜。 As the first distance and the second distance 17 may be adjusted to be 18, 13 when the test lens fixed in position to change the first distance and the second distance 17 CXD 18 by adjusting the camera 14a, as shown in FIG. 2 the first distance not be greater than the maximum distance 17 between power plane 13 and the lens 27 is appropriate. [0029] 图3是本发明的具体实施例中多焦点镜片屈光度检测方法的流程图。 [0029] FIG. 3 is a flowchart of a multifocal refractive lens detection method of a specific embodiment of the present invention.

[0030] 如图1和图3所示,利用平行光单元I来形成平行光28,使液晶板5接收平行光200来入射;当没有设置待测的镜片13时,采用控制部20根据控制命令来控制液晶板5中一百个像素点窗口6全部打开29,利用CXD摄像机14a获取未经镜片13而直接入射的光束11所形成的基准光斑30,基准光斑15的数量与像素点窗口6的数量一致,控制部20控制图像采集单元14获取基准光斑15,来确定复数个像素点窗口6中的任意一个像素点窗口6的位置,即、对与复数个像素点窗口6相对应的复数个基准光斑15定位; [0030] FIGS. 1 and 3, using a parallel light units I 28 to form parallel light, the liquid crystal panel 5 receives the collimated light 200 is incident; when no test lens 13 is set using the control unit 20 based on the control commands to control the liquid crystal panel 5 in one hundred pixels 6 fully open the window 29, acquired using reference spot 14a CXD camera 30 without directly entering the lens 13 formed by the beam 11, the reference spot number of pixels in the window 615 the same number, 20 controls the image acquisition unit control section 14 acquires the reference spot 15, to determine the location of a plurality of pixels of the window 6 of any one pixel of the window 6, i.e., a plurality of pairs and a plurality of pixels of the window 6 corresponds a reference light spot 15 is positioned;

[0031] 保持第一距离17,放置待测的镜片13在第一夹持机构12上,控制部20根据控制命令22a、区域命令22b以及开启的顺序命令22c来控制区域位置中的每一个像素点窗口6依次按照顺序来进行单独开启31,控制部20根据区域命令22b、顺序命令22c控制图像采集单元14按照区域位置、顺序来分别获取30每一个与单独开启所形成的光束11相对应形成的偏折光斑25 ; [0031] holding a first distance 17, a lens 13 is placed to be measured in the first clamping means 12, the control unit 20 according to the control commands 22a, 22b and sequence of opening command area command control region 22c to each pixel position dot window 6 in sequence in order to separate opening 31, the control unit 20 commands 22b depending on the region, the sequence command 22c controls the image acquisition unit 14 acquires respectively, according to regional location, the sequence 30 of each beam with a separate opening 11 formed opposite to be formed deflection spot 25;

[0032] 利用控制部20通过按照区域位置、顺序来比对每个基准光斑15的位置和相对应的每一个偏折光斑16的位置来顺次获取32每个第二距离18、第三距离25 ; [0032] By using the control unit 20 in accordance with the position of the region, order to sequentially obtain 32 than a second distance of each position of each reference position of the spot 15 and the corresponding deflection of each spot 18 of 16, a third distance 25;

[0033] 利用控制部20基于顺次得到的每个第一距离17、第二距离18以及第三距离25得出待测的镜片13的屈光度33,最后由输入显示部显示整体镜片上所有焦点位置的屈光度34。 [0033] Based on the control unit 20 sequentially obtained from each of the first 17, second 18 and third distance 25 from the measured results of the refractive lens 3313, and finally by the display unit to display all the input focus lens as a whole 34 diopter positions.

[0034] 发明的作用与效果 [0034] The action and effect of the invention

[0035] 综上,本发明的作用和效果在于: [0035] In summary, operations and effects of the present invention:

[0036] 本发明提供的多焦点镜片屈光度检测系统及其检测方法通过实现对与镜片上被测点位置相对应的入射光束进行单独开启相较已有技术具有检测结果准确精度高、节约检测时间和成本效率高的优势。 [0036] multifocal refractive lens detecting system and detecting method of the present invention provides a high accuracy detection result of the accuracy achieved by the position of the measured point with the corresponding beam incident on the lens compared to a single prior art open, save detection time and cost-efficiency advantages. 在设置好被测镜片后通过采用液晶板可以对平行光入射后所形成的每一条光束进行单独控制并且确保当任意一条像素点窗口开启时其他像素点窗口都处于闭合状态,即入射被测的镜片的光束是单一的被单独开启,排除了其他光束的干扰,根据显示输入部输入的控制命令、区域命令以及顺序命令使对镜片上点位置的扫描更具有针对性更高效,解决了盲目浪费时间成本、互相干涉精度差的问题。 Can be individually controlled and set in the lens under test by using the liquid crystal panel for each light beam is incident parallel light spot formed by the window to ensure that a pixel is turned on when any of the other window pixels are in a closed state, i.e. the measured incident lens is a single light beam is turned on individually, unaffected by other beam scanning point position of the lens in accordance with the display control command input section, and the sequence command area command more efficiently targeted to solve the blind waste time cost, mutual interference problem of poor accuracy.

[0037]另外,本发明提供的多焦点镜片屈光度检测系统及其检测方法还可以提供这样的功能:在对两片同型号镜片之间进行快速检测时,其中上一镜片的焦点位置可以被记录并被存储在存储部中,下一同型号的镜片被设置在第一夹持机构上时可以由控制部根据存储部存储的焦点位置将相对应的像素点窗口开启直接形成针对下一镜片的焦点入射的光束,高效快速。 [0037] Further, multifocal refractive lens detection system and detection method of the present invention also provides such functions may be provided: between the two when the same type of rapid detection lens, wherein a focal position of the lens can be recorded It may be formed for the next focus lens by the control unit corresponding to the open window of pixels in accordance with the focal position stored in the storage unit and stored directly in the storage unit when in the model with lenses is provided on the first clamping means the incident beam, fast and efficient.

[0038] 本发明提供的多焦点镜片屈光度检测系统中的控制部分别与第一夹持机构、第二夹持机构连接,可以调节第一距离和第二距离的大小,目的是可以达到以下效果,当在图像采集单元采用的设备例如CCD摄像机等的设备分辨率精准度有限的情况下,可以通过同时增大第一距离和第二距离来使入射到图像采集单元上的偏折光斑和基准光斑之间的距离更远更明显,更易被监测到,降低成本灵活性高。 [0038] The control section multifocal refractive lens detection system of the present invention, provided respectively, a second clamping means connected to the first clamping mechanism, can adjust the size of the first distance and the second distance, the purpose of the following effects can be achieved when the image pickup unit in the device, for example using a CCD camera with limited resolution devices where accuracy can be incident to the image pickup unit by increasing the first distance and the second distance while deflection spot and a reference the distance between the spot farther and more clearly, more easily monitored, to reduce the high cost of flexibility.

[0039] 本发明提供的多焦点镜片屈光度检测方法中可以分别对每个入射点采集第二距离后计算每个点屈光度,也可以先统一按照相关命令采集每个点第二距离后再统一计算整体屈光度,本发明提供的方法都是可以达到这样的效果。 [0039] multifocal refractive lens detection method of the present invention may be provided separately for each point of incidence of each collection point refractive power is calculated after the second distance, it may be related to the unified command acquired in accordance with the second distance for each point and then unified computing overall refractive power, the present invention provides methods are possible to achieve such results. [0040] 上述具体实施方式为本发明的优选案例,并不用来限制本发明的保护范围。 [0040] Preferably the above-described case of the specific embodiments of the present invention, not intended to limit the scope of the present invention.

Claims (4)

1.一种对由平行光转化而来的光束经过具有至少一个焦点的镜片后所形成的偏折光来进行检测而得到所述镜片的屈光度的多焦点镜片屈光度检测系统,其特征在于,包括: 平行光单元,用于形成所述平行光; 液晶板,用于接收所述平行光,被设置在所述平行光的路径上,设有用于形成所述光束的复数个像素点窗口; 第一夹持机构,用于使所述镜片被设置在所述光束的路径上; 图像采集单元,与所述镜片之间具有与所述光束相平行的方向上的第一距离r,用于获取所述光束直接形成的基准光斑和所述光束经过所述镜片形成的偏折光斑; 存储部,用于存储控制命令、区域命令以及顺序命令; 控制部,与所述液晶板和所述图像采集单元相连接;以及输入显示部,用于输入设定所述控制命令、所述区域命令、所述顺序命令并显示所述屈光度, 其中,所述 A pair of the parallel light converted from the light beam passes through the deflection of at least a focus lens is formed to have obtained by detecting the lens refractive multifocal refractive lens detection system, characterized by comprising: the parallel light unit for forming a parallel light; a liquid crystal panel, for receiving said parallel light, is provided in the path of the parallel light, is provided with a plurality of pixels formed in the window of the light beam; first clamping means for the lens is disposed in the path of said light beam; r having a first distance in a direction parallel to the light beam between the image acquisition unit, and the lens, for obtaining the the deflection spot and the reference spot of the beam passes through lenses formed directly formed on said light beam; a storage unit for storing a control command, the command and the sequence command area; and a control unit, and the liquid crystal panel and the image acquisition unit is connected; and an input display unit for inputting the control command set, the command area, a command sequence and displaying the diopter, wherein said 行光单元、所述液晶板、所述第一夹持机构以及所述图像采集单元都顺次沿着主光轴呈中心投影设置, 所述偏折光斑和所述基准光斑之间具有在与所述光束相垂直的方向上的第二距离L,所述主光轴和所述基准光斑之间具有在与所述光束相垂直的方向上的第三距离S,所述控制部用于根据所述控制命令来控制所述复数个像素点窗口进行开启或者闭合;用于根据所述区域命令来控制与所述焦点在所述镜片上的位置相对应的在所述复数个像素点窗口中的区域位置;用于根据所述顺序命令来控制所述像素点窗口进行单独开启的顺序;用于控制所述图像采集单元来获取所述基准光斑和所述偏折光斑;以及用于基于所述第一距离r、所述第二距离L以及所述第三距离S来得到所述屈光度。 Row light unit, a liquid crystal panel, said first holding means and the image acquisition unit are sequentially disposed along the center of the projection as a main optical axis, and having a deflection between the spots and the reference spots a second light beam from the direction perpendicular to the L, between the main optical axis and having a light spot on the reference beam relative to the direction perpendicular to the third distance S, the control unit according to the the control command to control the plurality of pixel points windows opened or closed; means for controlling said command in accordance with the region on the focal position of the lens corresponding to the plurality of pixels in the window the regional location; means for controlling the order of individual pixel window opening in accordance with the command sequence; means for controlling the image acquisition unit acquires the reference spot and a deflecting said light spot; and based on the said first distance r, the second distance and the third distance L to obtain the S diopter.
2.根据权利要求1中所述的多焦点镜片屈光度检测系统,其特征在于: 其中,所述平行光单元包含:光源器,用于形成光源;发散器,用于接收所述光源并形成发散的点光源,被设置在所述光源的路径上;准直透镜,用于接收所述点光源并形成所述平行光,被设置在所述点光源的路径上,所述准直透镜具有的第一直径H大于所述镜片具有的第二直径h。 The multifocal refractive lens in the detecting system as claimed in claim 1, wherein: wherein said parallel light unit comprising: a light source, a light source for forming; divergent for receiving the light source and forms a divergent point light source is disposed on the path of the light source; a collimator lens for receiving the point light source and the parallel light is formed, is disposed on the path of the point light source, a collimator lens having a H is greater than the first diameter of the lens having a second diameter h.
3.根据权利要求1中所述的多焦点镜片屈光度检测系统,其特征在于: 还包括:第二夹持机构,用于安装所述图像采集单元, 其中,所述控制部分别与所述第一夹持机构、第二夹持机构连接,用于调节所述第一距离r和所述二距离L的大小。 The multifocal refractive lens in the detecting system as claimed in claim 1, characterized in that: further comprising: a second clamping mechanism for mounting the image acquisition unit, wherein the control portions of the first a holding mechanism connected to the second clamping mechanism for adjusting the first distance r and the distance L of two sizes.
4.一种利用权利要求1中所述的多焦点镜片屈光度检测系统的检测方法,其特征在于,具有以下步骤: 采用所述平行光单元来形成所述平行光,利用所述液晶板来接受所述平行光入射; 采用控制部根据所述控制命令来控制液晶板中所述复数个像素点窗口全部打开,利用图像采集单元获取未经所述镜片而直接入射的所述光束所形成的基准光斑,采用控制部控制所述图像采集单元获取所述基准光斑,来确定所述复数个像素点窗口中的任意一个像素点窗口的位置; 保持所述第一距离,放置待测的所述镜片在所述第一夹持机构上,采用控制部根据所述控制命令、所述区域命令以及所述开启顺序命令来控制所述区域位置中的每一个所述像素点窗口依次按照所述顺序来进行所述单独开启,再采用控制部按照所述区域位置、所述顺序来分别获取每一个与所述单独开 A detection method using a multifocal lens of claim diopter detection system according to claim 1, further comprising the step of: using the parallel beam forming unit to the parallel light by the liquid crystal panel to accept the parallel light is incident; the use of the reference control unit controls the liquid crystal panel control command of said plurality of pixel points all open windows, by the image acquisition unit acquires the light beam directly incident on the lens without being formed in accordance with spot, using control section controls the image acquisition unit acquires the reference spot, determining the location of any of a plurality of pixels of a window of pixels in the window; maintaining said first distance, said lens to be measured is placed the first clamping mechanism, using the control unit according to the control command, and the command area of ​​the opening sequence of commands to control each pixel of said area of ​​the window position in accordance with the order sequence separately for the opening, and then using a position control section in accordance with said region, said acquisition order are each separately with the opening 启所形成的光束相对应形成的所述偏折光斑; 利用控制部通过按照所述区域位置、所述顺序来比对每个所述基准光斑的位置和相对应的每一个所述偏折光斑的位置来顺次获取每个所述第二距离、所述第三距离; 利用控制部基于顺次得到的每个所述第一距离、所述第二距离以及所述第三距离得出待测的所述镜片的所述屈光度。 The deflected light beam spots formed corresponding to the start of the formation; by the control unit in accordance with said location area, the location order of each of the alignment and reference spot corresponding to each of said deflected light spot sequentially acquiring a position of each of the second distance, the third distance; by the control unit of each of the sequentially obtained based on the first distance, the second distance and the third distance to be derived the measured refractive power of the lens.
CN2013100981972A 2013-03-25 2013-03-25 Multifocal lens diopter detection system and detection method thereof CN103217273A (en)

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