CN103018243B - For shielding the device of the hologram in detected material - Google Patents
For shielding the device of the hologram in detected material Download PDFInfo
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- CN103018243B CN103018243B CN201110289526.2A CN201110289526A CN103018243B CN 103018243 B CN103018243 B CN 103018243B CN 201110289526 A CN201110289526 A CN 201110289526A CN 103018243 B CN103018243 B CN 103018243B
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Abstract
This application provides a kind of device for shielding the hologram in detected material, described hologram comprises cross one another first grid stroke and the second grid stroke, described device comprises: the first light source, there is provided the light of the highlighted display of holographic content making to be made up of described first grid stroke, to mask the holographic content be made up of described first grid stroke; And secondary light source, provide the light of the highlighted display of holographic content making to be made up of described second grid stroke, to mask the holographic content be made up of described second grid stroke.
Description
Technical field
The application relates to holographic imaging technology, particularly one shielding hologram, to obtain the device of non-holographic content.
Background technology
The image-forming principle of hologram is well known.The surface of hologram is formed with many parallel diffraction light grid lines.When irradiating hologram, the contrast of diffraction light grid line is penetrated light and is carried out reflection and diffraction and produce effect lucuriant in design.The imaging effect of direction of illumination to hologram of light has a great impact.The content of hologram comprises image, word etc., if light is incident from the angle perpendicular to grid stroke, then can produces hologram clearly, from different angle views, it will be appreciated that different colors; And if light is incident from the angle being parallel to grid stroke, then can not produce hologram, hologram image becomes entirely black by because not having the reflection of light.
Dissimilar hologram can be comprised, such as background and pattern etc. in hologram.The grid stroke of pattern and the grid stroke of background normally orthogonal.In actual applications, the methods such as printing also can be utilized in hologram, to add non-holographic content according to actual needs.If adopt general lighting method, the image of acquisition will be not only the content of non-holographic, also comprise hologram in various degree.Due to the impact by hologram, the non-holographic content at hologram surface printing be obtained, or realize detecting the printing quality of non-holographic content, have very large difficulty.
Summary of the invention
According to an aspect of the application, provide a kind of device for shielding the hologram in detected material, described hologram comprises cross one another first grid stroke and the second grid stroke, described device comprises: the first light source, there is provided the light of the highlighted display of holographic content making to be made up of described first grid stroke, to mask the holographic content be made up of described first grid stroke; And secondary light source, provide the light of the highlighted display of holographic content making to be made up of described second grid stroke, to mask the holographic content be made up of described second grid stroke.
Alternatively, described first light source comprises: multiple LED luminescence units that the direction along described first grid stroke arranges, and the light that each described LED luminescence unit sends is all in a certain angle with the orientation of a LED luminescence unit.According to an embodiment of the application, described angle is 15-75 degree.According to another embodiment of the application, described angle is 30-60 degree.According to another embodiment of the application, described angle is 45 degree.
Alternatively, described first light source also comprises: the first scatter plate, between described multiple LED luminescence units and described detected material, carries out scattering for the light sent a described multiple LED luminescence unit.
Alternatively, the light that sends of a described multiple LED luminescence unit is formed with the normal angle of described detected material is the luminous flat of 20-30 degree.According to an embodiment of the application, described angle is 25 degree.
Alternatively, described secondary light source comprises: multiple 2nd LED luminescence units that the direction along described first grid stroke arranges, and the light that each described 2nd LED luminescence unit sends is all vertical with the orientation of the 2nd LED luminescence unit.
Alternatively, described secondary light source also comprises: the second scatter plate, between described multiple 2nd LED luminescence units and described detected material, for carrying out scattering to the light sent by described multiple 2nd LED luminescence unit.
Alternatively, the light that sends of described multiple 2nd LED luminescence unit is formed with the normal angle of described detected material is the luminous flat of 60-70 degree.According to an embodiment of the application, described angle is 65 degree.
Alternatively, this device comprises image capturing unit further, for obtaining the non-holographic content in described detected material.
Alternatively, the shooting angle of described image capturing unit and the normal angle of described detected material are 10-20 degree.According to an embodiment of the application, the shooting angle of described image capturing unit and the normal angle of described detected material are 15 degree.
According to an embodiment of the application, the luminous flat that the light that a described multiple LED luminescence unit sends is formed and the luminous flat that the light that described multiple 2nd LED luminescence unit sends is formed are in normal the same side of described detected material, and described image capturing unit is in the normal opposite side of described detected material.
Alternatively, this device comprises smooth roll further, and described detected material is resisted against on described smooth roll, thus described detected material is moved along with the rotation of described smooth roll.
Accompanying drawing explanation
Fig. 1 a shows the light source of the device according to the application's embodiment;
Fig. 1 b shows according to the light source of the application's embodiment and the detected material comprising hologram and non-holographic content;
Fig. 2 a shows the light source of the device according to the application's embodiment;
Fig. 2 b shows according to the light source of the application's embodiment and the detected material comprising hologram and non-holographic content;
Fig. 3 a shows according to the detected material of the application's embodiment and for shielding hologram in detected material to obtain the device of non-holographic content; And
Fig. 3 b shows according to the detected material of another embodiment of the application and for shielding hologram in detected material to obtain the device of non-holographic content.
Embodiment
With reference to the accompanying drawings the embodiment according to the application is described in detail.
Usually, can comprise dissimilar hologram in hologram, such as background parts and drafting department are graded.The grid stroke of pattern and the grid stroke of background normally orthogonal.
In the present embodiment, hologram comprises the hologram of two types, namely, background parts and pattern part, it will be understood by those skilled in the art that the hologram that also can comprise more than three kinds types in hologram, in order to for simplicity, in the present embodiment, only for background parts and pattern part.
According to an embodiment of the application, device for shielding the hologram in detected material comprises two light sources, one of them light source provides the light of the highlighted display of holographic content making to be made up of the grid stroke of background parts, to mask holographic background content, another light source provides the light of the highlighted display of holographic content making to be made up of the grid stroke of pattern part, to mask hologram pattern content.
Fig. 1 a shows the light source 110 of the device according to the application's embodiment.As shown in Figure 1a, light source 110 comprises multiple LED luminescence unit 111.Alternatively, light source 110 is linear light source, and multiple LED luminescence unit 111 arranges (be arranged as single, double or arrange more) along the length direction of light source 110.Each LED luminescence unit 111 is bent by direction as shown in Figure 1a, thus the light that each LED luminescence unit 111 is sent is all in a certain angle with the length direction of light source 110.Alternatively, the angle that each LED luminescence unit 111 is bent is 15-75 degree, and according to an embodiment, this angle is 30-60 degree, and according to another embodiment, this angle is 45 degree.
As shown in Figure 1a, light source 110 also comprises scatter plate 112.Scatter plate 112 is between multiple LED luminescence unit 111 and hologram, and the light sent to make multiple LED luminescence unit 111 arrives detected material after scatter plate 112 scattering.According to an embodiment, between LED luminescence unit 111 and scatter plate 112, be spaced apart 5 to 30 millimeters, between scatter plate 112 and detected material, be spaced apart 100 to 200 millimeters.According to another embodiment, between LED luminescence unit 111 and scatter plate 112, be spaced apart 15 millimeters, between scatter plate 112 and detected material, be spaced apart 150 millimeters.
Fig. 1 b shows according to the light source 110 of the application's embodiment and the detected material 200 (e.g., paper etc.) comprising hologram and non-holographic content.As shown in Figure 1 b, detected material 200 carries hologram, pattern grid stroke in hologram is parallel with W1 (Width of detected material 200) direction with the one in bias light grid line, another kind of parallel with L1 (length direction of detected material 200) direction.
As illustrated in figs. ia and ib, according to an embodiment of the application, the light that multiple LED luminescence unit 111 sends is to become the direction of miter angle to incide on scatter plate with the length direction (that is, the horizontal direction shown in figure) of light source 110.From the horizontal by the incident ray of miter angle after scatter plate scattering, the light intensity on light direction namely on miter angle direction is the strongest, then weakens gradually toward both sides.That is, light on the length direction (i.e. width W 1 direction of detected material 200) of scatter plate is eager to excel, and on the Width (i.e. the length L1 direction of detected material 200) of scatter plate, because scatter plate is in the direction of the width than much narrow in the longitudinal direction, so light wants much weak.Thus, incident ray is after the scatter plate scattering of narrow strip, light on the Width (i.e. the length L1 direction of detected material 200) of scatter plate wants much weak, so just can reach and incident ray be focused on width W 1 direction of detected material 200, and make the light area on the length L1 direction of detected material 200 be unlikely to too large.And on width W 1 direction of detected material 200 except the light from the horizontal by 45 degree of directions is the strongest, the light from the horizontal by other angles also exists.According to the diffraction characteristic of holography, so just can make when some angle views, the highlighted display of holographic content that the grid stroke parallel with length L1 direction is formed, thus be masked.
Fig. 2 a shows the light source 120 of the device according to the application's embodiment.As shown in Figure 2 a, light source 120 comprises multiple LED luminescence unit 121.Alternatively, light source 120 is linear light source, and multiple LED luminescence unit 121 arranges (be arranged as single, double or arrange more) along the length direction of light source 120.As shown in Figure 2 a, each LED luminescence unit 121 is not all bent, thus the light that each LED luminescence unit 121 is sent is perpendicular to the length direction of light source 120.
As shown in Figure 2 a, light source 120 also comprises scatter plate 122.Scatter plate 122 is between multiple LED luminescence unit 121 and hologram, and the light sent to make multiple LED luminescence unit 121 arrives detected material after scatter plate 122 scattering.
Fig. 2 b shows according to the light source 120 of the application's embodiment and the detected material 200 (e.g., paper etc.) comprising hologram and non-holographic content.As shown in Figure 2 b, detected material 200 carries hologram, pattern grid stroke in hologram is parallel with W1 (Width of detected material 200) direction with the one in bias light grid line, another kind of parallel with L1 (length direction of detected material 200) direction.
As shown in Figure 2 a and 2 b, according to an embodiment of the application, the light that multiple LED luminescence unit 121 sends incides on scatter plate with the direction that the length direction (that is, the horizontal direction shown in figure) with light source 120 is vertical.Incident ray, after scatter plate scattering, light direction is the light intensity on vertical direction is the strongest, then weakens gradually toward surrounding.According to the diffraction characteristic of holography, can make when some angle views like this, the highlighted display of holographic content that the grid stroke parallel with width W 1 direction of detected material 200 is formed, thus be masked.
Because the pattern of hologram and the diffraction light grid line of background are mutually perpendicular, by light source 110 and 120, create the light of two kinds of different directions, use the surface of these two light source irradiation detected materials 200 thus simultaneously, just can mask background and the pattern of hologram, and obtain non-holographic content clearly.
In addition, as shown in Fig. 1 a, 1b, 2a and 2b, the length of light source 110 and 120 is all greater than the width W 1 of detected material 200, and to make in testing process, detected material 200 can both obtain the irradiation of light source 110 and 120 on whole Width.
Fig. 3 a shows according to the detected material of the application's embodiment and the device for shielding the hologram in detected material.As shown in Figure 3 a, light source 110 and 120 is linear light source, and as mentioned above, the length direction of light source 110 and 120 is all parallel to the Width W1 of detected material 200.In testing process, detected material 200 moves relative to the length L1 direction (as shown by arrow A) of light source 110 and 120 along detected material 200.The irradiating angle of light source 110 and 120 has a significant impact for the shield effectiveness of holographic content, thus affects the sharpness of the non-holographic content obtained.The light that light source 110 and 120 sends all can be considered as a luminous flat approx.The luminous flat of light source 110 at the normal angle α of shooting point P and detected material 200 at 20-30 degree, and the luminous flat of light source 120, when the normal angle β of shooting point P and detected material 200 spends at 60-70, can obtain the good shield effectiveness of holographic content.
According to this embodiment, the device for shielding the hologram in detected material 200 also comprises the image capturing unit 130 for taking non-holographic content, such as, and black and white camera, color camera etc.Matched with the irradiating angle of light source 110 and 120 by the shooting angle adjusting image capturing unit 130, in the position of the highlighted display of the holographic content of the background that irradiated by light source 110 and 120 respectively and the holographic content of pattern, good shield effectiveness can be obtained by adjusting the suitable time shutter.That is, the shooting angle of image capturing unit 130 also has considerable influence for the sharpness of obtained non-holographic content.Be appreciated that and be provided with scatter plate 112 and 122 in light source 110 and 120, make incident light obtain certain scattering before being irradiated to detected material 200, thus be easy to the shooting angle adjusting image capturing unit 130, to obtain non-holographic content more clearly.When the shooting angle of image capturing unit 130 is spent at 10-20 at the normal angle γ of shooting point P and detected material 200, non-holographic content more clearly can be photographed.According to an embodiment of the application, be 25 degree at α, 1 β is 65 degree, and when γ is 15 degree, the non-holographic content obtained is the most clear.
Fig. 3 b shows according to the detected material of another embodiment of the application and the device for shielding the hologram in detected material.The difference of Fig. 3 b and Fig. 3 a is, in the embodiment shown in Fig. 3 b, the cylindric smooth roll 300 that make use of surfacing transmits detected material 200, in operation, detected material 200 is resisted against the surface of smooth roll 300, and move along with the rotation of smooth roll 300, the requirement met when dynamic operation detected material 200 surface smoothness can be reached like this, thus contribute to improving shooting effect.
Although be appreciated that in the foregoing description, the grid stroke of the pattern of hologram and the grid stroke of background are mutually vertical, and it also can be mutually intersect but and off plumb.In this case, only need adjust the angle of the bending of luminescence unit in light source 110 and 120, the irradiating angle of light source 110 and 120 and the shooting angle of image capturing unit 130, thus obtain the highlighted of holographic content that two kinds of grid strokes form and show.
Although the application utilizes foregoing description and embodiment to illustrate, the application is not limited thereto.The protection domain of the application is limited by the claim in appended claims, and any equivalent replacement carried out technical characteristic in claim, all should belong to the application's limited range.
Claims (15)
1., for shielding a device for the hologram in detected material, described hologram comprises cross one another first grid stroke and the second grid stroke, and described device comprises:
First light source, provides the light of the highlighted display of holographic content making to be made up of described first grid stroke, to mask the holographic content be made up of described first grid stroke; And
Secondary light source, provides the light of the highlighted display of holographic content making to be made up of described second grid stroke, to mask the holographic content be made up of described second grid stroke.
2. device as claimed in claim 1, wherein, described first light source comprises:
A multiple LED luminescence unit, the light that each described LED luminescence unit sends is all in a certain angle with the orientation of a LED luminescence unit, and described angle is 15-75 degree.
3. device as claimed in claim 2, wherein, the light that each described LED luminescence unit sends is all 30-60 degree with the angle of the orientation of a LED luminescence unit.
4. device as claimed in claim 3, wherein, the light that each described LED luminescence unit sends is all 45 degree with the angle of the orientation of a LED luminescence unit.
5. device as claimed in claim 2, wherein, described first light source also comprises:
First scatter plate, between described multiple LED luminescence units and described detected material, carries out scattering for the light sent a described multiple LED luminescence unit.
6. device as claimed in claim 2, wherein, light formation and the normal angle of described detected material that a described multiple LED luminescence unit sends are the luminous flat of 20-30 degree.
7. device as claimed in claim 6, wherein, light formation and the normal angle of described detected material that a described multiple LED luminescence unit sends are the luminous flat of 25 degree.
8. device as claimed in claim 1, wherein, described secondary light source comprises:
Multiple 2nd LED luminescence unit, the light that each described 2nd LED luminescence unit sends is all vertical with the orientation of the 2nd LED luminescence unit.
9. device as claimed in claim 8, wherein, described secondary light source also comprises:
Second scatter plate, between described multiple 2nd LED luminescence units and described detected material, for carrying out scattering to the light sent by described multiple 2nd LED luminescence unit.
10. device as claimed in claim 8, wherein, light formation and the normal angle of described detected material that described multiple 2nd LED luminescence unit sends are the luminous flat of 60-70 degree.
11. devices as claimed in claim 10, wherein, light formation and the normal angle of described detected material that described multiple 2nd LED luminescence unit sends are the luminous flat of 65 degree.
12. devices according to any one of claim 1 to 11, comprise further:
Image capturing unit, for obtaining the non-holographic content in described detected material.
13. devices as claimed in claim 12, wherein, the shooting angle of described image capturing unit and the normal angle of described detected material are 10-20 degree.
14. devices as claimed in claim 13, wherein, the shooting angle of described image capturing unit and the normal angle of described detected material are 15 degree.
15. devices as claimed in claim 12, comprise further:
Smooth roll, described detected material is resisted against on described smooth roll, thus described detected material is moved along with the rotation of described smooth roll.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110289526.2A CN103018243B (en) | 2011-09-27 | 2011-09-27 | For shielding the device of the hologram in detected material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110289526.2A CN103018243B (en) | 2011-09-27 | 2011-09-27 | For shielding the device of the hologram in detected material |
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| CN103018243B true CN103018243B (en) | 2015-08-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103822926B (en) * | 2014-03-13 | 2015-10-14 | 武汉虹之彩包装印刷有限公司 | Holographic shading radium-shine wrappage press quality amount detection systems and detection method |
| CN106269571A (en) * | 2015-06-01 | 2017-01-04 | 合肥美亚光电技术股份有限公司 | Imaging system and color selector for color selector |
| JP6751569B2 (en) * | 2016-02-23 | 2020-09-09 | グローリー株式会社 | Method for detecting the document identification device, the document processor, the image sensor unit, and the optical variable element region |
| CN111339814A (en) * | 2019-11-28 | 2020-06-26 | 深圳阜时科技有限公司 | Optical detection device and electronic equipment |
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Address after: 100070 No. 6 Spark Road, Science City, Beijing, Fengtai District Patentee after: ZHONGCHAO SPECIAL SECURITY TECHNOLOGY Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 100070 No. 6 Spark Road, Science City, Beijing, Fengtai District Patentee before: ZHONGCHAO SPECIAL SECURITY TECHNOLOGY Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |