WO2021003788A1 - Three-dimensional code, and three-dimensional code reading device - Google Patents
Three-dimensional code, and three-dimensional code reading device Download PDFInfo
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- WO2021003788A1 WO2021003788A1 PCT/CN2019/099327 CN2019099327W WO2021003788A1 WO 2021003788 A1 WO2021003788 A1 WO 2021003788A1 CN 2019099327 W CN2019099327 W CN 2019099327W WO 2021003788 A1 WO2021003788 A1 WO 2021003788A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/0614—Constructional details the marking being selective to wavelength, e.g. color barcode or barcodes only visible under UV or IR
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
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- the invention relates to the field of anti-counterfeiting technology, in particular to a three-dimensional code and a reading device for the three-dimensional code.
- the present invention aims to solve at least one of the technical problems existing in the prior art, and provides a three-dimensional code and a three-dimensional code reading device to solve the problems in the prior art.
- a three-dimensional code wherein the three-dimensional code includes: a support layer, the support layer has a plurality of adjacent or spaced protrusions, a plurality of the protrusions At least two raised structures in the structure have different depths, and the depths of the raised structures with different depths respectively correspond to 1/4 wavelengths of light of different colors of the scanning light source of the three-dimensional code reading device.
- the protruding structure includes at least one step, and the depths of the multiple steps in the same protruding structure respectively correspond to 1/4 wavelength of light of different colors of the scanning light source of the reading device of the three-dimensional code.
- the step surface of the 1/4 wavelength of the light of the same color in the scanning light source of the reading device corresponding to the three-dimensional code in the plurality of convex structures forms a plurality of different first two-dimensional code images
- the plurality of In the convex structure the stepped surface of the 1/4 wavelength of the light of different colors of the scanning light source corresponding to the three-dimensional code reading device in the convex structure forms a plurality of different second two-dimensional code images, and a plurality of different first two-dimensional code images and multiple Two different second two-dimensional code images are combined to form a three-dimensional code image.
- the cross-sectional shape of the convex structure includes a rectangle.
- the cross-sectional shape of the protruding structure includes a circle.
- a three-dimensional code reading device suitable for the aforementioned three-dimensional code
- the three-dimensional code reading device includes: a light source mechanism and a beam expanding mechanism, the beam expanding mechanism and The light source mechanism is connected, and the light source mechanism includes a plurality of monochromatic light sources of different colors, and the monochromatic light source of each color can be expanded by the beam expanding mechanism and then emitted to the convex structures of different depths of the three-dimensional code .
- the three-dimensional code provided by the present invention is realized by arranging convex structures of different depths on the support layer, and the different depths of the convex structures correspond to 1/4 wavelength of the light of different colors of the scanning light source of the reading device of the three-dimensional code respectively.
- the three-dimensional code formed in this way can increase the capacity compared to the two-dimensional code, and because it is realized by using 1/4 wavelength of light of different colors, the image information after reading the three-dimensional code and encoding the three-dimensional code information The anti-counterfeiting strength is higher.
- Figure 1 is a schematic diagram of the structure of the three-dimensional code provided by the present invention.
- Fig. 2 is a schematic diagram of a specific structure of the protrusion structure provided by the present invention.
- Figure 3 is a schematic diagram of 3D code encoding provided by the present invention.
- FIG. 4 is a schematic diagram of the structure of the three-dimensional code reading device provided by the present invention.
- a three-dimensional code is provided, wherein, as shown in FIG. 1, the three-dimensional code includes: a support layer 100 having a plurality of adjacent or spaced protrusions on the support layer 100 Structure 110. At least two of the plurality of raised structures 110 have different depths, and the depths of the raised structures 110 with different depths correspond to different colors of the scanning light source of the three-dimensional code reading device. 1/4 wavelength of the light.
- the three-dimensional code provided by the present invention is realized by arranging convex structures of different depths on the support layer, and the different depths of the convex structures correspond to 1/4 wavelength of the light of different colors of the scanning light source of the reading device of the three-dimensional code respectively.
- the three-dimensional code formed in this way can increase the capacity compared to the two-dimensional code, and because it is realized by using 1/4 wavelength of light of different colors, the image information after reading the three-dimensional code and encoding the three-dimensional code information The anti-counterfeiting strength is higher.
- the raised structure 110 includes at least one step 111, and the depths of the multiple steps 111 located in the same raised structure 110 correspond to the different colors of the scanning light source of the three-dimensional code reading device. 1/4 wavelength of light.
- the depth of the first step corresponds to 1/4 ⁇ 1 of the light of the first color of the scanning light source of the three-dimensional code reading device
- the depth of the second step The reading device corresponding to the three-dimensional code scans 1/4 ⁇ 2 of the light of the second color of the light source
- the depth of the third step corresponds to 1/4 ⁇ 3 of the light of the third color scanned by the reading device of the three-dimensional code.
- the color of light corresponding to the depth of the steps in one of the raised structures may be the same as the color of light corresponding to the depth of the steps in other raised structures. It can also be different, so that a variety of different depths can be realized, so that the information capacity that can be formed by the 3D code is stronger.
- the stepped surface of the 1/4 wavelength of the light of the same color in the scanning light source of the reading device corresponding to the three-dimensional code in the plurality of convex structures forms a plurality of different first two-dimensional code images
- the plurality of In the convex structure the stepped surface of the 1/4 wavelength of the light of different colors of the scanning light source corresponding to the three-dimensional code reading device in the convex structure forms a plurality of different second two-dimensional code images, and a plurality of different first two-dimensional code images and multiple Two different second two-dimensional code images are combined to form a three-dimensional code image.
- the stepped surface at the same 1/4 wavelength depth constitutes an independent two-dimensional code image.
- Step surfaces with different 1/4 wavelength depths constitute different two-dimensional code images, and multiple or multiple two-dimensional code images in the same image area can be combined into a three-dimensional code image.
- multiple independent two-dimensional code information can be set to 0, 1, 2, 3 and other different digital units, which can be independently coded and output independently; they can also be cross-coded and combined output. Meet the technical requirements of different anti-counterfeiting strengths.
- the cross-sectional shape of the protruding structure 110 includes a rectangle.
- the cross-sectional shape of the protruding structure 110 includes a circle.
- cross-sectional shape of the convex structure 110 may also be an irregular shape, and the cross-sectional shape of the convex structure 110 is not limited here.
- a reading device suitable for the three-dimensional code described above is provided, wherein the reading device of the three-dimensional code includes: a light source mechanism 200 and a beam expanding mechanism 300.
- the beam expanding mechanism 300 is connected to the light source mechanism 200, and the light source mechanism 200 includes a plurality of monochromatic light sources of different colors, and the monochromatic light source of each color can be expanded by the beam expanding mechanism 300 Transmit to the raised structures of different depths of the three-dimensional code.
- the three-dimensional code reading device provided by the present invention is suitable for the foregoing three-dimensional code.
- a read signal can be obtained, and the read signal can be used to encode the three-dimensional code.
- the three-dimensional code reading device provided by the present invention is composed of multiple light sources of different wavelengths.
- the monochromatic light source reads the image at 1/4 wavelength
- the height difference of the steps can obtain the maximum and minimum light intensity, and obtain the read signal.
- multiple independent QR code information can be obtained.
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Abstract
The present invention relates to the technical field of anti-counterfeiting, and particularly discloses a three-dimensional code. The three-dimensional code comprises a support layer having multiple protruding structures arranged adjacently or at intervals. At least two of the protruding structures have different depths, and the depths of the protruding structures having different depths correspond to 1/4 wavelengths of different colors of a scanning light source of a three-dimensional code reading device, respectively. Further disclosed is a three-dimensional code reading device. The three-dimensional code provided by the present invention is realized by disposing the protruding structures having different depths on the support layer, and enabling the different depths of the protruding structures to correspond to the 1/4 wavelengths of different colors of the scanning light source of the three-dimensional code reading device, respectively. The three-dimensional code formed in such a manner has an increased capacity compared to a two-dimensional code, and since 1/4 wavelengths of different colors of light are utilized for implementation, the three-dimensional code information, obtained after image information read from the three-dimensional code is encoded, has a superior anti-counterfeiting effect.
Description
本发明涉及防伪技术领域，尤其涉及一种三维码及三维码的读取装置。The invention relates to the field of anti-counterfeiting technology, in particular to a three-dimensional code and a reading device for the three-dimensional code.
目前，黑白二色的平面二维码已广泛用于社会生活的各个方面。特别是为在线支付提供了极大便利。但是，二维码在防伪方面由于其容量以及技术的限值，很难实现高强度防伪。Currently, flat two-dimensional codes in black and white have been widely used in all aspects of social life. Especially for online payment provides great convenience. However, it is difficult to achieve high-strength anti-counterfeiting due to its capacity and technical limitations in terms of anti-counterfeiting.
发明内容Summary of the invention
本发明旨在至少解决现有技术中存在的技术问题之一，提供一种三维码及三维码的读取装置，以解决现有技术中的问题。The present invention aims to solve at least one of the technical problems existing in the prior art, and provides a three-dimensional code and a three-dimensional code reading device to solve the problems in the prior art.
作为本发明的第一个方面，提供一种三维码，其中，所述三维码包括：支撑层，所述支撑层上具有多个相邻或间隔设置的凸起结构，多个所述凸起结构中的至少两个凸起结构具有不同的深度，具有不同深度的所述凸起结构的深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长。As a first aspect of the present invention, there is provided a three-dimensional code, wherein the three-dimensional code includes: a support layer, the support layer has a plurality of adjacent or spaced protrusions, a plurality of the protrusions At least two raised structures in the structure have different depths, and the depths of the raised structures with different depths respectively correspond to 1/4 wavelengths of light of different colors of the scanning light source of the three-dimensional code reading device.
优选地，所述凸起结构包括至少一个台阶，位于同一个凸起结构中的多个台阶的深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长。Preferably, the protruding structure includes at least one step, and the depths of the multiple steps in the same protruding structure respectively correspond to 1/4 wavelength of light of different colors of the scanning light source of the reading device of the three-dimensional code.
优选地，多个所述凸起结构中对应三维码的读取装置扫描光源中的同一颜色的光的1/4波长的台阶面形成多个不同的第一二维码图像，多个所述凸起结构中对应三维码的读取装置扫描光源的不同颜色的光的1/4波长的台阶面形成多个不同的第二二维码图像，多个不同的第一二维码图像与多个不同的第二二维码图像组合形成三维码图像。Preferably, the step surface of the 1/4 wavelength of the light of the same color in the scanning light source of the reading device corresponding to the three-dimensional code in the plurality of convex structures forms a plurality of different first two-dimensional code images, and the plurality of In the convex structure, the stepped surface of the 1/4 wavelength of the light of different colors of the scanning light source corresponding to the three-dimensional code reading device in the convex structure forms a plurality of different second two-dimensional code images, and a plurality of different first two-dimensional code images and multiple Two different second two-dimensional code images are combined to form a three-dimensional code image.
优选地，所述凸起结构的横切面形状包括矩形。Preferably, the cross-sectional shape of the convex structure includes a rectangle.
优选地，所述凸起结构的横切面形状包括圆形。Preferably, the cross-sectional shape of the protruding structure includes a circle.
作为本发明的第二个方面，提供一种适用于前文所述的三维码的读取装置，其中，所述三维码的读取装置包括：光源机构和扩束机构，所述扩束机构与所述光源机构连接，所述光源机构包括多种不同颜色的单色光源，每种颜色的单色光源均能够经过所述扩束机构扩束后发射到三维码的不同深度的凸起结构上。As a second aspect of the present invention, there is provided a three-dimensional code reading device suitable for the aforementioned three-dimensional code, wherein the three-dimensional code reading device includes: a light source mechanism and a beam expanding mechanism, the beam expanding mechanism and The light source mechanism is connected, and the light source mechanism includes a plurality of monochromatic light sources of different colors, and the monochromatic light source of each color can be expanded by the beam expanding mechanism and then emitted to the convex structures of different depths of the three-dimensional code .
本发明提供的三维码，通过在支撑层上设置不同深度的凸起结构，且凸起结构的不同深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长来实现，这种方式形成的三维码相比二维码能够提高容量，且由于采用不同颜色的光的1/4波长来实现，使得读取该三维码后的图像信息进行编码后得到的三维码信息的防伪强度更高。The three-dimensional code provided by the present invention is realized by arranging convex structures of different depths on the support layer, and the different depths of the convex structures correspond to 1/4 wavelength of the light of different colors of the scanning light source of the reading device of the three-dimensional code respectively. The three-dimensional code formed in this way can increase the capacity compared to the two-dimensional code, and because it is realized by using 1/4 wavelength of light of different colors, the image information after reading the three-dimensional code and encoding the three-dimensional code information The anti-counterfeiting strength is higher.
附图是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，与下面的具体实施方式一起用于解释本发明，但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. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:
图1为本发明提供的三维码的结构示意图。Figure 1 is a schematic diagram of the structure of the three-dimensional code provided by the present invention.
图2为本发明提供的凸起结构的具体结构示意图。Fig. 2 is a schematic diagram of a specific structure of the protrusion structure provided by the present invention.
图3为本发明提供的三维码编码示意图。Figure 3 is a schematic diagram of 3D code encoding provided by the present invention.
图4为本发明提供的三维码的读取装置的结构示意图。FIG. 4 is a schematic diagram of the structure of the three-dimensional code reading device provided by the present invention.
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention.
作为本发明的第一个方面，提供一种三维码，其中，如图1所示，所述三维码包括：支撑层100，所述支撑层100上具有多个相邻或间隔设置的凸起结构110，多个所述凸起结构110中的至少两个凸起结构110具有不同的深度，具有不同深度的所述凸起结构110的深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长。As a first aspect of the present invention, a three-dimensional code is provided, wherein, as shown in FIG. 1, the three-dimensional code includes: a support layer 100 having a plurality of adjacent or spaced protrusions on the support layer 100 Structure 110. At least two of the plurality of raised structures 110 have different depths, and the depths of the raised structures 110 with different depths correspond to different colors of the scanning light source of the three-dimensional code reading device. 1/4 wavelength of the light.
本发明提供的三维码，通过在支撑层上设置不同深度的凸起结构，且凸起结构的不同深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长来实现，这种方式形成的三维码相比二维码能够提高容量，且由于采用不同颜色的光的1/4波长来实现，使得读取该三维码后的图像信息进行编码后得到的三维码信息的防伪强度更高。The three-dimensional code provided by the present invention is realized by arranging convex structures of different depths on the support layer, and the different depths of the convex structures correspond to 1/4 wavelength of the light of different colors of the scanning light source of the reading device of the three-dimensional code respectively. The three-dimensional code formed in this way can increase the capacity compared to the two-dimensional code, and because it is realized by using 1/4 wavelength of light of different colors, the image information after reading the three-dimensional code and encoding the three-dimensional code information The anti-counterfeiting strength is higher.
具体地，如图2所示，所述凸起结构110包括至少一个台阶111，位于同一个凸起结构110中的多个台阶111的深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长。Specifically, as shown in FIG. 2, the raised structure 110 includes at least one step 111, and the depths of the multiple steps 111 located in the same raised structure 110 correspond to the different colors of the scanning light source of the three-dimensional code reading device. 1/4 wavelength of light.
图2所示，以凸起结构110包括三个台阶111为例，其中第一台阶的深度对应三维码的读取装置扫描光源的第一颜色的光的1/4λ
1，第二台阶的深度对应三维码的读取装置扫描光源的第二颜色的光的1/4λ
2，第三台阶的深度对应三维码的读取装置扫描光源的第三颜色的光的1/4λ
3。
As shown in FIG. 2, taking the convex structure 110 including three steps 111 as an example, the depth of the first step corresponds to 1/4λ 1 of the light of the first color of the scanning light source of the three-dimensional code reading device, and the depth of the second step The reading device corresponding to the three-dimensional code scans 1/4λ 2 of the light of the second color of the light source, and the depth of the third step corresponds to 1/4λ 3 of the light of the third color scanned by the reading device of the three-dimensional code.
应当理解的是，当多个凸起结构均包括多个台阶时，其中一个凸起结构中的台阶深度所对应的光的颜色可以与其他凸起结构中的台阶深度对应的光的颜色相同，也可以不同，这样能够实现多种不用的深度，从而能够三维码形成的信息容量更加强大。It should be understood that when a plurality of raised structures each include a plurality of steps, the color of light corresponding to the depth of the steps in one of the raised structures may be the same as the color of light corresponding to the depth of the steps in other raised structures. It can also be different, so that a variety of different depths can be realized, so that the information capacity that can be formed by the 3D code is stronger.
具体地，多个所述凸起结构中对应三维码的读取装置扫描光源中的同一颜色的光的1/4波长的台阶面形成多个不同的第一二维码图像，多个所述凸起结构中对应三维码的读取装置扫描光源的不同颜色的光的1/4波长的台阶面形成多个不同的第二二维码图像，多个不同的第一二维码图像与多个不同的第二二维码图像组合形成三维码图像。Specifically, the stepped surface of the 1/4 wavelength of the light of the same color in the scanning light source of the reading device corresponding to the three-dimensional code in the plurality of convex structures forms a plurality of different first two-dimensional code images, and the plurality of In the convex structure, the stepped surface of the 1/4 wavelength of the light of different colors of the scanning light source corresponding to the three-dimensional code reading device in the convex structure forms a plurality of different second two-dimensional code images, and a plurality of different first two-dimensional code images and multiple Two different second two-dimensional code images are combined to form a three-dimensional code image.
应当理解的是，处在同一1/4波长深度的台阶面构成独立的二维码图像。不同1/4波长深度的台阶面构成不同的二维码图像，同一图像区域的多个或多重二维码图像可以组合成三维码图像。It should be understood that the stepped surface at the same 1/4 wavelength depth constitutes an independent two-dimensional code image. Step surfaces with different 1/4 wavelength depths constitute different two-dimensional code images, and multiple or multiple two-dimensional code images in the same image area can be combined into a three-dimensional code image.
在编码时，如图3所示，多重独立的二维码信息可设置的0、1、2、3等不同的数字单元，既可独立编码，独立输出；又可交叉编码，组合输出，可满足不同防伪强度的技术需求。When coding, as shown in Figure 3, multiple independent two-dimensional code information can be set to 0, 1, 2, 3 and other different digital units, which can be independently coded and output independently; they can also be cross-coded and combined output. Meet the technical requirements of different anti-counterfeiting strengths.
优选地，所述凸起结构110的横切面形状包括矩形。Preferably, the cross-sectional shape of the protruding structure 110 includes a rectangle.
优选地，所述凸起结构110的横切面形状包括圆形。Preferably, the cross-sectional shape of the protruding structure 110 includes a circle.
应当理解的是，凸起结构110的横切面形状还可以为不规则形状，此处对凸起结构110的横切面形状不做限定。It should be understood that the cross-sectional shape of the convex structure 110 may also be an irregular shape, and the cross-sectional shape of the convex structure 110 is not limited here.
作为本发明的第二个方面，如图4所示，提供一种适用于前文所述的三维码的读取装置，其中，所述三维码的读取装置包括：光源机构200和扩束机构300，所述扩束机构300与所述光源机构200连接，所述光源机构200包括多种不同颜色的单色光源，每种颜色的单色光源均能够经过所述扩束机构300扩束后发射到三维码的不同深度的凸起结构上。As a second aspect of the present invention, as shown in FIG. 4, a reading device suitable for the three-dimensional code described above is provided, wherein the reading device of the three-dimensional code includes: a light source mechanism 200 and a beam expanding mechanism 300. The beam expanding mechanism 300 is connected to the light source mechanism 200, and the light source mechanism 200 includes a plurality of monochromatic light sources of different colors, and the monochromatic light source of each color can be expanded by the beam expanding mechanism 300 Transmit to the raised structures of different depths of the three-dimensional code.
本发明提供的三维码的读取装置，适用于前文的三维码，通过采用不同颜色的光读取前文的三维码结构，能够得到读取信号，该读取信号可以被用于编码实现三维码的防伪性能。The three-dimensional code reading device provided by the present invention is suitable for the foregoing three-dimensional code. By using different colors of light to read the foregoing three-dimensional code structure, a read signal can be obtained, and the read signal can be used to encode the three-dimensional code. Anti-counterfeiting performance.
本发明提供的三维码的读取装置，由多个不同波长的光源组成。对其中单色光源按1/4波长读取图像时，台阶的高度差可得到光强的最大和最小值，得到读取信号。以此类推，可以得到多重独立的二维码信息。The three-dimensional code reading device provided by the present invention is composed of multiple light sources of different wavelengths. When the monochromatic light source reads the image at 1/4 wavelength, the height difference of the steps can obtain the maximum and minimum light intensity, and obtain the read signal. By analogy, multiple independent QR code information can be obtained.
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。It can be understood that the above implementations are merely exemplary implementations used to illustrate the principle of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.
Claims (6)
- 一种三维码，其特征在于，所述三维码包括：支撑层，所述支撑层上具有多个相邻或间隔设置的凸起结构，多个所述凸起结构中的至少两个凸起结构具有不同的深度，具有不同深度的所述凸起结构的深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长。A three-dimensional code, characterized in that, the three-dimensional code comprises: a support layer, the support layer has a plurality of adjacent or spaced protrusions, at least two of the plurality of protrusions The structures have different depths, and the depths of the convex structures with different depths correspond to 1/4 wavelengths of light of different colors of the scanning light source of the three-dimensional code reading device respectively.
- 根据权利要求1所述的三维码，其特征在于，所述凸起结构包括至少一个台阶，位于同一个凸起结构中的多个台阶的深度分别对应三维码的读取装置扫描光源的不同颜色的光的1/4波长。The three-dimensional code according to claim 1, wherein the convex structure includes at least one step, and the depths of the multiple steps in the same convex structure correspond to different colors of the scanning light source of the three-dimensional code reading device. 1/4 wavelength of the light.
- 根据权利要求2所述的三维码，其特征在于，多个所述凸起结构中对应三维码的读取装置扫描光源中的同一颜色的光的1/4波长的台阶面形成多个不同的第一二维码图像，多个所述凸起结构中对应三维码的读取装置扫描光源的不同颜色的光的1/4波长的台阶面形成多个不同的第二二维码图像，多个不同的第一二维码图像与多个不同的第二二维码图像组合形成三维码图像。The three-dimensional code according to claim 2, wherein the 1/4 wavelength stepped surface of the same color light in the scanning light source of the reading device corresponding to the three-dimensional code in the plurality of convex structures forms a plurality of different The first two-dimensional code image, the reading device corresponding to the three-dimensional code in the plurality of convex structures scans the stepped surface of the 1/4 wavelength of the light of different colors of the light source to form a plurality of different second two-dimensional code images, and Two different first two-dimensional code images are combined with a plurality of different second two-dimensional code images to form a three-dimensional code image.
- 根据权利要求1至3中任意一项所述的三维码，其特征在于，所述凸起结构的横切面形状包括矩形。The three-dimensional code according to any one of claims 1 to 3, wherein the cross-sectional shape of the protruding structure comprises a rectangle.
- 根据权利要求1至3中任意一项所述的三维码，其特征在于，所述凸起结构的横切面形状包括圆形。The three-dimensional code according to any one of claims 1 to 3, wherein the cross-sectional shape of the convex structure comprises a circle.
- 一种适用于权利要求1至5中任意一项所述的三维码的读取装置，其特征在于，所述三维码的读取装置包括：光源机构和扩束机构，所述扩束机构与所述光源机构连接，所述光源机构包括多种不同颜色的单色光源，每种颜色的单色光源均能够经过所述扩束机构扩束后发射到三维码的不同深度的凸起结构上。A three-dimensional code reading device suitable for any one of claims 1 to 5, wherein the three-dimensional code reading device comprises: a light source mechanism and a beam expanding mechanism, the beam expanding mechanism and The light source mechanism is connected, and the light source mechanism includes a plurality of monochromatic light sources of different colors, and the monochromatic light source of each color can be expanded by the beam expanding mechanism and then emitted to the convex structures of different depths of the three-dimensional code .
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