CN110806388A - Dark light column positioning device, positioning method and color measurement method of columnar laser paper - Google Patents

Dark light column positioning device, positioning method and color measurement method of columnar laser paper Download PDF

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CN110806388A
CN110806388A CN201911137878.9A CN201911137878A CN110806388A CN 110806388 A CN110806388 A CN 110806388A CN 201911137878 A CN201911137878 A CN 201911137878A CN 110806388 A CN110806388 A CN 110806388A
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laser paper
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shaped light
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CN110806388B (en
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李俊锋
位春傲
常成
刘睿雯
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Henan University of Animal Husbandry and Economy
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    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
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Abstract

本发明公开了柱状镭射纸的暗光柱定位装置、定位方法及颜色测量方法，暗光柱定位装置包括：载样台和棒状光源，棒状光源水平设置且与载样台长度方向相垂直；载样台一侧还设有支架，棒状光源设于一罩壳内，棒状光源通过罩壳连接至支架；定位方法包括：步骤(1)、放置待检测镭射纸；步骤(2)、打开棒状光源，标记交点；步骤(3)、移动棒状光源，标记交点；步骤(4)、将步骤(2)得到的交点和步骤(3)得到的交点对应连接得到暗光柱；颜色测量方法包括：首先获得柱状镭射纸的暗光柱；然后使用颜色测量设备测量暗光柱上任意位置点，记录颜色数据。

Figure 201911137878

The invention discloses a dark light column positioning device, a positioning method and a color measurement method for columnar laser paper. The dark light column positioning device comprises: a sample stage and a rod-shaped light source. The rod-shaped light source is arranged horizontally and is perpendicular to the length direction of the sample stage; A bracket is also provided on one side, the rod-shaped light source is arranged in a cover, and the rod-shaped light source is connected to the bracket through the cover; the positioning method includes: step (1), placing the laser paper to be detected; step (2), turning on the rod-shaped light source, marking Intersection point; step (3), moving the rod-shaped light source, marking the intersection point; step (4), correspondingly connecting the intersection point obtained in step (2) and the intersection point obtained in step (3) to obtain a dark beam; the color measurement method includes: first obtaining a columnar laser The dark light column of the paper; then use the color measuring device to measure any point on the dark light column, and record the color data.

Figure 201911137878

Description

柱状镭射纸的暗光柱定位装置、定位方法及颜色测量方法Dark light column positioning device, positioning method and color measurement method for columnar laser paper

技术领域technical field

本发明属于柱状镭射纸检测技术领域，具体涉及柱状镭射纸的暗光柱定位装置、定位方法及颜色测量方法。The invention belongs to the technical field of columnar laser paper detection, and in particular relates to a dark light column positioning device, a positioning method and a color measurement method for columnar laser paper.

背景技术Background technique

柱状镭射纸是一种常用的全息包装材料，在光照条件下会呈现出非常绚烂的彩虹光柱效果。柱状镭射纸的结构里面包含有一层光栅信息层，当光在透过印刷层和保护层照射到光栅上面的时候，光会形成衍射。Columnar laser paper is a commonly used holographic packaging material, which will show a very splendid rainbow light column effect under lighting conditions. The structure of the cylindrical laser paper contains a layer of grating information layer. When the light is irradiated on the grating through the printing layer and the protective layer, the light will be diffracted.

通常，在柱状镭射纸的模切工艺中刻画光栅，刻画光栅时将光栅按照一定角度旋转后将其刻画到镀铝层上的，并且沿光柱方向的光栅刻画方向相同，垂直光柱方向的光栅刻画按一定角度旋转,并且其刻画周期为π。所以，当光线照射到柱状镭射纸表面时，由于不同的光栅有不同的旋转角，光线之间有一定的光程差，因此就会形成具有周期性的彩虹光柱效果。Usually, the grating is depicted in the die-cutting process of cylindrical laser paper. When the grating is depicted, the grating is rotated at a certain angle and then depicted on the aluminized layer, and the grating along the direction of the light column is depicted in the same direction, and the grating in the vertical direction of the light column is depicted in the same direction. It rotates at a certain angle, and its characterization period is π. Therefore, when the light hits the surface of the cylindrical laser paper, due to the different rotation angles of different gratings, there is a certain optical path difference between the lights, so a periodic rainbow light beam effect will be formed.

柱状镭射纸光栅的每个周期内均具有一组光栅可以形成暗光柱，目前，尚未有较好的方法可以定位暗光柱和检测柱状镭射纸的颜色质量。There is a set of gratings in each period of the cylindrical laser paper grating to form a dark light column. At present, there is no better method to locate the dark light column and detect the color quality of the cylindrical laser paper.

发明内容SUMMARY OF THE INVENTION

本发明的目的是提供一种柱状镭射纸的暗光柱定位装置，包括载样台和位于载样台上方的棒状光源，棒状光源水平设置且与载样台长度方向相垂直；载样台一侧还设有支架，棒状光源设于一罩壳内，棒状光源通过罩壳连接至支架。The purpose of the present invention is to provide a dark light column positioning device for columnar laser paper, which includes a sample stage and a rod-shaped light source located above the sample stage. The rod-shaped light source is arranged horizontally and is perpendicular to the length direction of the sample stage; A bracket is also provided, the rod-shaped light source is arranged in a cover, and the rod-shaped light source is connected to the bracket through the cover.

作为上述技术方案的进一步描述：As a further description of the above technical solution:

所述罩壳的纵截面为倒置的L型结构，载样台上还设有校准机构。The longitudinal section of the casing is an inverted L-shaped structure, and a calibration mechanism is also provided on the sample stage.

作为上述技术方案的进一步描述：As a further description of the above technical solution:

所述校准机构为十字标记，十字标记的一个方向与棒状光源方向相同，另一个方向与柱状镭射纸的光柱方向相同。The calibration mechanism is a cross mark, one direction of the cross mark is the same as the direction of the rod-shaped light source, and the other direction is the same as the direction of the light beam of the columnar laser paper.

作为上述技术方案的进一步描述：As a further description of the above technical solution:

所述棒状光源可沿载样台长度方向做水平往复运动。The rod-shaped light source can perform horizontal reciprocating motion along the length direction of the sample stage.

作为上述技术方案的进一步描述：As a further description of the above technical solution:

所述支架包括一水平支架和设于水平支架下方的垂直支架，水平支架与棒状光源相垂直，罩壳端部的垂直段向下延伸出一滑块，水平支架表面嵌入设有一与滑块相适应的滑槽，罩壳通过滑块与滑槽的配合可沿水平支架长度方向做水平往复运动。The bracket includes a horizontal bracket and a vertical bracket arranged below the horizontal bracket, the horizontal bracket is perpendicular to the rod-shaped light source, a slider extends downward from the vertical section of the end of the cover, and a surface of the horizontal bracket is embedded with a slider corresponding to the slider. Adapted to the chute, the cover can perform horizontal reciprocating motion along the length of the horizontal bracket through the cooperation of the slider and the chute.

本实施例的暗光柱定位装置，提高了定位的稳定性，棒状光源可沿载样台长度方向做水平往复运动，在定位检测过程中，可以通过移动棒状光源，获得多个衍射图样，结合标记交点可以获得镭射纸上同一暗光柱的多个定位点，从而对暗光柱进行更准确的定位，并可以与柱状镭射纸表面的彩虹光柱方向相校准，以判断定位到的暗光柱的方向是否准确。The dark light column positioning device of this embodiment improves the stability of positioning. The rod-shaped light source can reciprocate horizontally along the length direction of the sample stage. During the positioning and detection process, multiple diffraction patterns can be obtained by moving the rod-shaped light source, combined with marks The intersection point can obtain multiple positioning points of the same dark beam on the laser paper, so that the dark beam can be positioned more accurately, and can be calibrated with the direction of the rainbow beam on the surface of the cylindrical laser paper to judge whether the direction of the located dark beam is accurate. .

本发明另一目的是提供一种柱状镭射纸的暗光柱定位方法，包括以下步骤：Another object of the present invention is to provide a dark beam positioning method for columnar laser paper, comprising the following steps:

步骤(1)、将待检测镭射纸放置在载样台上，镭射纸的光柱方向与棒状光源相垂直；Step (1), placing the laser paper to be detected on the sample stage, and the light column direction of the laser paper is perpendicular to the rod-shaped light source;

步骤(2)、打开棒状光源，柱状镭射纸表面形成若干个相互连接的椭圆形衍射图样，标记出椭圆形相接处的交点；Step (2), turn on the rod-shaped light source, and the surface of the columnar laser paper forms several interconnected elliptical diffraction patterns, and marks the intersection of the elliptical junction;

步骤(3)、移动棒状光源，柱状镭射纸表面再次形成若干个相互连接的椭圆形衍射图样，标记出椭圆形相接处的交点；Step (3), moving the rod-shaped light source, the surface of the columnar laser paper forms several interconnected elliptical diffraction patterns again, and marks the intersection of the elliptical junction;

步骤(4)、将步骤(2)得到的交点和步骤(3)得到的交点对应连接，得到若干根直线即为暗光柱。In step (4), the intersection point obtained in step (2) and the intersection point obtained in step (3) are correspondingly connected, and several straight lines are obtained, which are dark light beams.

本实施例的暗光柱定位方法，可以准确的定位柱状镭射纸表面每个光栅周期内的暗光柱的位置，稳定性高，另外，本实施例中的定位方法得到的暗光柱可以与柱状镭射纸表面的彩虹光柱方向相校准，以判断定位到的暗光柱的方向是否准确。The dark light column positioning method of this embodiment can accurately locate the position of the dark light column within each grating period on the surface of the cylindrical laser paper, with high stability. In addition, the dark light column obtained by the positioning method in this embodiment can be compared with the cylindrical laser paper. The direction of the rainbow light beam on the surface is calibrated to judge whether the direction of the positioned dark beam is accurate.

本发明还有一目的是提供一种柱状镭射纸的颜色测量方法，包括以下步骤：首先，使用柱状镭射纸的暗光柱定位装置，获得柱状镭射纸的暗光柱；然后，使用颜色测量设备测量暗光柱上任意位置点，记录颜色数据。Another object of the present invention is to provide a color measurement method for columnar laser paper, comprising the following steps: firstly, using a dark beam positioning device of the columnar laser paper to obtain the dark beam of the columnar laser paper; then, using a color measuring device to measure the dark beam Click on any position to record the color data.

本发明的颜色测量方法，摈弃了现有技术中在全纸表面进行颜色测量的方式，转而先定位柱状镭射纸的暗光柱，通过检测暗光柱上的颜色数据进行质量控制检测，可以有效降低柱状镭射纸表面彩虹条纹效果对颜色质量检测的影响，将柱状镭射纸的光栅结构对测量的影响降低到最小，实现了柱状镭射纸颜色质量的稳定检测。The color measurement method of the present invention abandons the method of performing color measurement on the entire surface of the paper in the prior art, and instead locates the dark light column of the columnar laser paper first, and performs quality control detection by detecting the color data on the dark light column, which can effectively reduce the The influence of the rainbow stripe effect on the surface of the cylindrical laser paper on the color quality detection reduces the influence of the grating structure of the cylindrical laser paper on the measurement to the minimum, and realizes the stable detection of the color quality of the cylindrical laser paper.

附图说明Description of drawings

附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

图1是实施例1中柱状镭射纸的暗光柱定位装置的示意图；Fig. 1 is the schematic diagram of the dark light column positioning device of the columnar laser paper in Example 1;

图2是实施例2中柱状镭射纸的暗光柱定位装置的示意图；Fig. 2 is the schematic diagram of the dark light column positioning device of the columnar laser paper in Example 2;

图3是图2中点A处的局部放大示意图；Fig. 3 is the partial enlarged schematic diagram at point A in Fig. 2;

图4是实施例2中待检测的柱状镭射纸(已去除色彩信息)；Fig. 4 is the columnar laser paper to be detected in Example 2 (color information has been removed);

图5是实施例2中待检测柱状镭射纸表面形成的衍射图案的示意图(已去除色彩信息)；5 is a schematic diagram of the diffraction pattern formed on the surface of the cylindrical laser paper to be detected in Example 2 (color information has been removed);

图6是图5中点B处的局部放大示意图；Fig. 6 is the partial enlarged schematic diagram at point B in Fig. 5;

图7是实施例中柱状镭射纸光栅的微观分布示意图(为提高清晰度光栅未全部示出)；7 is a schematic diagram of the microscopic distribution of the columnar laser paper gratings in the embodiment (the gratings are not all shown in order to improve the clarity);

图中标记为：1、载样台；11、校准机构；2、棒状光源；3、罩壳；31、散热口；32、滑块；4、支架；41、水平支架；411、滑槽；42、垂直支架；43、升降台。The marks in the figure are: 1. Sample stage; 11. Calibration mechanism; 2. Rod light source; 3. Cover; 31. Heat sink; 32. Slider; 4. Bracket; 42. Vertical bracket; 43. Elevating platform.

具体实施方式Detailed ways

现结合说明书附图，详细说明本发明的结构特点。The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

实施例1Example 1

参见图1，本实施例中提供一种柱状镭射纸的暗光柱定位装置，包括载样台1和位于载样台1上方的棒状光源2。本实施例中，载样台1优选为矩形结构，棒状光源2与载样台1宽度方向相平行，载样台1一侧还设有支架4，棒状光源2设于一罩壳3内，棒状光源2通过罩壳3连接至支架4，罩壳3的纵截面为倒置的L型结构。Referring to FIG. 1 , this embodiment provides a dark light column positioning device for columnar laser paper, including a sample stage 1 and a rod-shaped light source 2 located above the sample stage 1 . In this embodiment, the sample stage 1 is preferably a rectangular structure, the rod-shaped light source 2 is parallel to the width direction of the sample stage 1, a bracket 4 is also provided on one side of the sample stage 1, and the rod-shaped light source 2 is arranged in a cover 3, The rod-shaped light source 2 is connected to the bracket 4 through a cover 3, and the longitudinal section of the cover 3 is an inverted L-shaped structure.

参见图1，载样台1上还设有校准机构11，用于判断待检测镭射纸是否放置到位，使得镭射纸的光柱方向与棒状光源2保持垂直；本实施例中校准机构11优选为多个十字标记，十字标记中的一个方向与棒状光源2方向相同，另一个方向则与镭射纸的光柱方向相同；另外，沿罩壳3长度方向还开设有散热口31。Referring to FIG. 1 , a calibration mechanism 11 is also provided on the sample stage 1 for judging whether the laser paper to be detected is placed in place, so that the beam direction of the laser paper is kept perpendicular to the rod-shaped light source 2 ; in this embodiment, the calibration mechanism 11 is preferably multiple There are cross marks, one direction of the cross marks is the same as the direction of the rod-shaped light source 2 , and the other direction is the same as the direction of the beam of the laser paper;

本实施例的暗光柱定位装置，可有效确定单个周期内暗光柱的位置，降低了光栅特性对暗光柱定位带来的负面影响。The dark light column positioning device of this embodiment can effectively determine the position of the dark light column in a single cycle, and reduces the negative influence of the grating characteristics on the positioning of the dark light column.

具体的，载样台1用于放置待检测的柱状镭射纸，柱状镭射纸表面的彩虹光柱与棒状光源2相垂直，在棒状光源2的照射下，柱状镭射纸表面形成衍射图样；衍射图样具体为：在棒状光源2的正下方，形成若干个相互连接的椭圆形，沿棒状光源2长度方向排列，每两两椭圆形相接处的交点位于对应周期的暗光柱上，由于暗光柱的方向与柱状镭射纸表面的彩虹光柱相同，确定了交点加之确定了方向，即可确定柱状镭射纸表面每个光栅周期内的暗光柱的位置。Specifically, the sample stage 1 is used to place the cylindrical laser paper to be detected. The rainbow light beam on the surface of the cylindrical laser paper is perpendicular to the rod-shaped light source 2. Under the irradiation of the rod-shaped light source 2, a diffraction pattern is formed on the surface of the cylindrical laser paper. It is: directly below the rod-shaped light source 2, several interconnected ellipses are formed, arranged along the length direction of the rod-shaped light source 2, and the intersection point of every two ellipses is located on the dark light column of the corresponding period, due to the direction of the dark light column. Similar to the rainbow beam on the surface of the cylindrical laser paper, the position of the dark beam in each grating period on the surface of the cylindrical laser paper can be determined by determining the intersection point and the direction.

实施例2Example 2

在实施例1的基础上，本实施例中提供一种柱状镭射纸的暗光柱定位装置，棒状光源2可沿载样台1长度方向做水平往复运动，实现方式具体为：参见图2和图3，支架4包括一水平支架41和设于水平支架41下方的垂直支架42，水平支架41与棒状光源2相垂直，罩壳3端部的垂直段向下延伸出一滑块32，水平支架41表面则嵌入设有一与滑块32相适应的滑槽411，罩壳3通过滑块32与滑槽411的配合可沿水平支架41长度方向做水平往复运动。On the basis of Embodiment 1, this embodiment provides a dark light column positioning device for columnar laser paper. The rod-shaped light source 2 can perform horizontal reciprocating motion along the length direction of the sample stage 1. The specific implementation method is as follows: refer to FIG. 2 and FIG. 3. The bracket 4 includes a horizontal bracket 41 and a vertical bracket 42 arranged below the horizontal bracket 41. The horizontal bracket 41 is perpendicular to the rod-shaped light source 2, and a slider 32 extends downward from the vertical section of the end of the housing 3. The horizontal bracket The surface of 41 is embedded with a chute 411 adapted to the slider 32 , and the casing 3 can reciprocate horizontally along the length of the horizontal bracket 41 through the cooperation of the slider 32 and the chute 411 .

参见图2和图3，为了进一步提高棒状光源2移动的稳定性，本实施例中，支架4设有两个，分别位于罩壳3两端。另外，垂直支架42底部均连接有升降台43，以方便调整棒状光源2的水平高度。Referring to FIG. 2 and FIG. 3 , in order to further improve the movement stability of the rod-shaped light source 2 , in this embodiment, two brackets 4 are provided, which are respectively located at both ends of the housing 3 . In addition, the bottom of the vertical bracket 42 is connected with a lifting platform 43 to facilitate the adjustment of the horizontal height of the rod-shaped light source 2 .

本实施例的暗光柱定位装置，进一步提高了定位的稳定性，棒状光源2可沿载样台1长度方向做水平往复运动，在定位检测过程中，可以通过移动棒状光源2，获得多个衍射图样，结合标记交点可以获得镭射纸上同一暗光柱的多个定位点，从而对暗光柱进行更准确的定位，并可以与柱状镭射纸表面的彩虹光柱方向相校准，以判断定位到的暗光柱的方向是否准确。The dark light column positioning device of this embodiment further improves the positioning stability. The rod-shaped light source 2 can perform horizontal reciprocating motion along the length direction of the sample stage 1. During the positioning and detection process, the rod-shaped light source 2 can be moved to obtain a plurality of diffraction patterns. The pattern, combined with the marked intersection points, can obtain multiple positioning points of the same dark light column on the laser paper, so as to more accurately locate the dark light column, and can be calibrated with the direction of the rainbow light column on the surface of the columnar laser paper to determine the positioned dark light column. direction is correct.

实施例3Example 3

在实施例2的基础上，本实施例中提供一种柱状镭射纸的暗光柱定位方法，包括以下步骤：On the basis of Embodiment 2, the present embodiment provides a method for locating dark beams of columnar laser paper, comprising the following steps:

步骤(1)、参见图4，将待检测镭射纸放置在载样台1上，通过校准机构11的辅助，使得镭射纸的光柱方向与棒状光源2相垂直；Step (1), referring to FIG. 4, place the laser paper to be detected on the sample stage 1, and make the beam direction of the laser paper perpendicular to the rod-shaped light source 2 with the assistance of the calibration mechanism 11;

步骤(2)、打开棒状光源2(记此时为第一检测位置)，柱状镭射纸表面形成衍射图样；参见图5和图6，衍射图样具体为：在第一检测位置的正下方，形成若干个相互连接的椭圆形，其沿棒状光源2长度方向排列，每两两椭圆形相接处的交点位于对应周期的暗光柱上，用记号笔在镭射纸上标记出这些交点，即为第一检测位交点组；Step (2), turn on the rod-shaped light source 2 (remember this time as the first detection position), and the surface of the columnar laser paper forms a diffraction pattern; referring to Figure 5 and Figure 6, the diffraction pattern is specifically: directly below the first detection position, form a diffraction pattern. Several interconnected ellipses are arranged along the length direction of the rod-shaped light source 2, and the intersection of every two ellipses is located on the dark light column of the corresponding period, and these intersections are marked on the laser paper with a marker, which is the first a detection point intersection group;

步骤(3)、水平移动棒状光源2(记此时为第二检测位置)，柱状镭射纸表面再次形成衍射图样；衍射图样具体为：在第二检测位置的正下方，形成若干个相互连接的椭圆形，其沿棒状光源2长度方向排列，每两两椭圆形相接处的交点位于对应周期的暗光柱上，用记号笔在镭射纸上标记出这些交点，即为第二检测位交点组；Step (3), move the rod-shaped light source 2 horizontally (remember this time as the second detection position), and form a diffraction pattern on the surface of the columnar laser paper again; The ellipse is arranged along the length direction of the rod-shaped light source 2, and the intersection point of every two ellipse is located on the dark light column of the corresponding period, and these intersection points are marked on the laser paper with a marker, which is the second detection position intersection point group ;

步骤(4)、将第一检测位交点组和第二检测位交点组中的各个交点对应连接，得到若干根线段，这些线段所在直线即为柱状镭射纸表面的暗光柱的位置。Step (4): Correspondingly connect each intersection in the first detection position intersection group and the second detection position intersection group to obtain several line segments, and the straight lines where these line segments are located are the positions of the dark beams on the surface of the columnar laser paper.

本实施例的暗光柱定位方法，可以准确的定位柱状镭射纸表面每个光栅周期内的暗光柱的位置，稳定性高，另外，本实施例中的定位方法得到的暗光柱可以与柱状镭射纸表面的彩虹光柱方向相校准，以判断定位到的暗光柱的方向是否准确。The dark light column positioning method of this embodiment can accurately locate the position of the dark light column within each grating period on the surface of the cylindrical laser paper, with high stability. In addition, the dark light column obtained by the positioning method in this embodiment can be compared with the cylindrical laser paper. The direction of the rainbow light beam on the surface is calibrated to judge whether the direction of the positioned dark beam is accurate.

实施例4Example 4

在实施例3的基础上，本实施例中提供一种柱状镭射纸的颜色测量方法，包括以下步骤：通过实施例3的方法定位到柱状镭射纸的暗光柱后，使用颜色测量设备(本实施例中优选X-RITE CI64积分球式分光光度计)测量暗光柱上任意位置点，得到的颜色数据即镭射纸的颜色。On the basis of Embodiment 3, this embodiment provides a method for measuring the color of columnar laser paper, comprising the following steps: after locating the dark beam of columnar laser paper by the method of Embodiment 3, use a color measuring device (this embodiment In the example, X-RITE CI64 integrating sphere spectrophotometer is preferred) to measure any point on the dark light column, and the obtained color data is the color of the laser paper.

本实施例的检测方法的原理具体为：参见图7，柱状镭射纸的表面有很多圆形的光栅刻画结构，并且沿其光柱方向的光栅刻画方向相同，垂直于光柱方向的光栅刻画方向则呈现不同角度的转动，在镭射纸的一个周期里，小光栅的方向都不一样，所以光照射上去散射是不一样的；The principle of the detection method of the present embodiment is as follows: referring to FIG. 7 , there are many circular grating characterization structures on the surface of the cylindrical laser paper, and the grating characterization directions along the light column direction are the same, and the grating characterization direction perpendicular to the light column direction presents Rotation of different angles, in one cycle of the laser paper, the direction of the small grating is different, so the light scattering is different;

本实施例中，棒状光源2与待检测镭射纸的光柱方向相垂直，当棒状光源2照射到与其光线方向平行的小光栅上的时候，光到每条线的距离不一样，产生光程差，光程差产生散射；当棒状光源2照射到跟与其光线方向垂直的小光栅上的时候，光到每条线距离一样，没有光程差，所以没有色散，因此，与其他位置相比会很暗。本实施例中先确定了暗光柱的位置，将此区域作为柱状镭射纸颜色质量的检测区域，由于暗光柱上没有色散产生，所以此区域内的颜色质量不会受到衍射现象的干扰，对其进行颜色质量检测所得到的数据就是柱状镭射纸本身的颜色质量。In this embodiment, the rod-shaped light source 2 is perpendicular to the beam direction of the laser paper to be detected. When the rod-shaped light source 2 illuminates a small grating parallel to its light direction, the distance from the light to each line is different, resulting in an optical path difference. , the optical path difference produces scattering; when the rod-shaped light source 2 shines on a small grating perpendicular to its light direction, the distance from the light to each line is the same, there is no optical path difference, so there is no dispersion, therefore, compared with other positions, the very dark. In this embodiment, the position of the dark beam is first determined, and this area is used as the detection area for the color quality of the columnar laser paper. Since there is no dispersion on the dark beam, the color quality in this area will not be disturbed by the diffraction phenomenon. The data obtained from the color quality inspection is the color quality of the columnar laser paper itself.

因此，本实施例中，摈弃了现有技术中在全纸表面进行颜色测量的方式，转而先定位柱状镭射纸的暗光柱，通过检测暗光柱上的颜色数据进行质量控制检测，可以有效降低柱状镭射纸表面彩虹条纹效果对颜色质量检测的影响，将柱状镭射纸的光栅结构对测量的影响降低到最小，实现了柱状镭射纸颜色质量的稳定检测。Therefore, in this embodiment, the method of performing color measurement on the entire surface of the paper in the prior art is discarded, and instead, the dark beam of the columnar laser paper is first positioned, and the quality control detection is performed by detecting the color data on the dark beam, which can effectively reduce the The influence of the rainbow stripe effect on the surface of the cylindrical laser paper on the color quality detection reduces the influence of the grating structure of the cylindrical laser paper on the measurement to the minimum, and realizes the stable detection of the color quality of the cylindrical laser paper.

以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (7)

1. A dark light column positioning device of columnar laser paper is characterized by comprising a sample carrying platform (1) and a rod-shaped light source (2) positioned above the sample carrying platform (1), wherein the rod-shaped light source (2) is horizontally arranged and is vertical to the length direction of the sample carrying platform (1); one side of the sample loading platform (1) is also provided with a support (4), the rod-shaped light source (2) is arranged in a housing (3), and the rod-shaped light source (2) is connected to the support (4) through the housing (3).
2. The dim light column positioning device for cylindrical laser paper according to claim 1, wherein the longitudinal section of the housing (3) is an inverted L-shaped structure, and the sample stage (1) is further provided with a calibration mechanism (11).
3. The dark beam positioning device for cylindrical laser paper according to claim 2, wherein the alignment mechanism (11) is a cross mark, one direction of the cross mark is the same as the direction of the bar-shaped light source (2), and the other direction is the same as the beam direction of the cylindrical laser paper.
4. The dark light column positioning device of cylindrical laser paper according to claim 1, wherein the rod-shaped light source (2) can reciprocate horizontally along the length direction of the sample carrier (1).
5. The dim light column positioning device for cylindrical laser paper according to claim 2, wherein the support (4) comprises a horizontal support (41) and a vertical support (42) arranged below the horizontal support (41), the horizontal support (41) is perpendicular to the rod-shaped light source (2), a slide block (32) extends downwards from the vertical section of the end of the housing (3), a sliding groove (411) adapted to the slide block (32) is embedded in the surface of the horizontal support (41), and the housing (3) can horizontally reciprocate along the length direction of the horizontal support (41) through the matching of the slide block (32) and the sliding groove (411).
6. A positioning method of the dark beam positioning device of the column laser paper according to any one of claims 1 to 5, comprising the steps of:
step (1), placing laser paper to be detected on a sample carrying platform (1), wherein the light beam direction of the laser paper is perpendicular to a rod-shaped light source (2);
step (2), turning on the rod-shaped light source (2), forming a plurality of mutually connected elliptical diffraction patterns on the surface of the columnar laser paper, and marking intersection points of elliptical connection positions;
moving the rod-shaped light source (2), forming a plurality of mutually connected elliptical diffraction patterns on the surface of the columnar laser paper again, and marking intersection points of elliptical connection positions;
and (4) correspondingly connecting the intersection points obtained in the step (2) with the intersection points obtained in the step (3) to obtain a plurality of straight lines, namely the dark light columns.
7. A color measurement method of columnar laser paper is characterized by comprising the following steps: firstly, using the dark light column positioning device of the column-shaped laser paper of any one of claims 1 to 5 to obtain the dark light column of the column-shaped laser paper; then, an arbitrary position point on the dark light column was measured using a color measuring device, and color data was recorded.
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