CN101510070B - Hologram fabrication process and fabricated hologram - Google Patents
Hologram fabrication process and fabricated hologram Download PDFInfo
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- CN101510070B CN101510070B CN200910130713.9A CN200910130713A CN101510070B CN 101510070 B CN101510070 B CN 101510070B CN 200910130713 A CN200910130713 A CN 200910130713A CN 101510070 B CN101510070 B CN 101510070B
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Abstract
The invention provides a hologram in which a visually unidentifiable microtext or other micropattern of the order of 10 mum is recorded, and a process for the fabrication of the same. A volume hologram recording material 2 is located on the side of a reflection type volume hologram master 1 onto which copying illumination light 11 is incident, and the copying illumination light 11 incident onto the recording material 2 and light 12 diffracted through the master 1 interfere together in the volume hologram recording material 2 thereby copying the reflection type volume hologram master. In this case, a reflecting plate 5 having a fine regular reflection pattern 3 is interleaved between the master 1 and the recording material 2, and the copying illumination light 11 incident onto the recording material 2 and regularly reflected light 32 from the reflecting plate having the regular reflection pattern 3 interfere together in the recording material 2 thereby allowing the regular reflection pattern 3 to be multi-recorded in a hologram having the reflection type volume hologram master 1 copied in it.
Description
Technical field
The present invention relates to the hologram of hologram fabrication process and making, particularly in common volume hologram, record the method for making of microtext hologram pattern, that can use with hologram as safety (micro-text hologram) of trickle character etc. and the microtext hologram made from the method.
Background technology
Always, the fine pattern recording as volume hologram is the pattern of 100 μ m left and right.In addition, in relief type (relief) hologram, also there is the example that the fine pattern of 30 μ m left and right is recorded as hologram.
In addition, always, in the case of record micro-character etc. can not be visual pattern, use the pattern made from graphic arts film etc. as subject, record (patent documentation 1) as hologram, or make to fit tightly on hologram recording material with the pattern of the making such as graphic arts film, making hologram recording material inactivation is pattern form, form hologram pattern (patent documentation 2).
Patent documentation 1: Japanese Patent Application Publication 2003-29607 communique
Patent documentation 2: the flat 11-24538 communique of Japanese Patent Application Publication
The technical matters that invention will solve
Always, the fine pattern forming in volume hologram is the pattern of 100 about μ m, by using the simple magnascope of magnifier etc., can confirm trickle pattern.
The in the situation that of forming fine pattern as describing pattern in relief type hologram, although can form the pattern of number μ m, not the pattern being recorded as hologram yet, but the pattern recording with physics mode.
In addition, in the situation that pattern form being recorded as volume hologram using existing method, in the time of recorded hologram, between hologram recording material and pattern form, clip the transparent base of film or glass etc., the minimum dimension of pattern form is 100 μ m left and right.
Like this, in existing volume hologram, record and the fine pattern of regenerating trickle deficiently, might not be can not be visual pattern, be inadequate as safety hologram.
Summary of the invention
The present invention completes in view of the above-mentioned condition of prior art, and its object is to provide a kind of trickle degree with 10 μ m grades to record the microtext hologram of the pattern of character that can not be visual etc.
For solving the technical scheme of problem
State in realization in the hologram fabrication process of the present invention of object, copy illumination light light incident side configuration volume hologram recording material at the volume hologram master of reflection-type, by making to be injected into copying illumination light and interfering in volume hologram recording material from the diffraction light of the volume hologram master of reflection-type in volume hologram recording material, copy thus the volume hologram master of reflection-type, this hologram fabrication process is characterised in that
Between the volume hologram master and above-mentioned volume hologram recording material of above-mentioned reflection-type, insertion has the reflecting plate of normal reflection portion, copy illumination light and interfere in above-mentioned volume hologram recording material from the normal reflection light of the normal reflection portion of said reflection plate by making to be injected into above-mentioned in above-mentioned volume hologram recording material, thus in the hologram of volume hologram master that has copied above-mentioned reflection-type, record above-mentioned normal reflection portion as hologram multiplely.
In addition, hologram of the present invention is by the volume hologram of the reflection-type that object picture records in the mode that can regenerate arbitrarily, it is characterized in that, multiple recording has the pattern being made up of at least a portion interference fringe that arrangement forms substantially in parallel on hologram record face, in above-mentioned pattern, make white illumination light inject hologram record face from vertical direction in the situation that, on the specific direction along record surface, different with the regeneration look of its central authorities at the two ends of pattern, with the direction orthogonal along this specific direction of record surface on, in the entirety of pattern, can observe with identical adding lustre to again.
In the case, one side of preferred above-mentioned pattern or the size of diameter are below 50 μ m.
In addition, preferred above-mentioned pattern is recorded in multiple regions of hologram, and the interval between above-mentioned zone is the more than 50 times of size of a described pattern.
In addition, to be recorded in respect to the area of hologram be in the region below 1/10000 to preferred above-mentioned pattern.
In another hologram fabrication process of the present invention, copy illumination light light incident side configuration volume hologram recording material at the volume hologram master of reflection-type, by making to be injected into copying illumination light and interfering in volume hologram recording material from the diffraction light of the volume hologram master of reflection-type in volume hologram recording material, copy thus the volume hologram master of reflection-type, this hologram fabrication process is characterised in that
Between the volume hologram master and above-mentioned volume hologram recording material of above-mentioned reflection-type, insertion has the reflecting plate of normal reflection portion, for the region of normal reflection portion with said reflection plate, to copy other normal reflection portion that illumination light is different and copy illumination light and generally perpendicularly inject in above-mentioned volume hologram recording material from above-mentioned, copy illumination light and interfere in above-mentioned volume hologram recording material from the normal reflection light of the normal reflection portion of said reflection plate by making to be injected into above-mentioned normal reflection portion in above-mentioned volume hologram recording material, thus in the hologram of volume hologram master that has copied above-mentioned reflection-type, record above-mentioned normal reflection portion as hologram multiplely.
And then, in another hologram fabrication process of the present invention, copy illumination light light incident side configuration volume hologram recording material at the volume hologram master of reflection-type, by making to inject copying illumination light and interfering in volume hologram recording material from the diffraction light of the volume hologram master of reflection-type in volume hologram recording material, copy thus the volume hologram master of reflection-type, this hologram fabrication process is characterised in that
By the other volume hologram recording material configuration different from above-mentioned volume hologram recording material in having on the reflecting plate of normal reflection portion, from above-mentioned other volume hologram recording material side, to copy other normal reflection portion that illumination light is different and copy illumination light and inject in above-mentioned other volume hologram recording material from above-mentioned, copy illumination light and interfere in above-mentioned other volume hologram recording material with the normal reflection light of the normal reflection portion from said reflection plate by making to be injected into above-mentioned normal reflection portion in above-mentioned other volume hologram recording material, thus in above-mentioned other volume hologram recording material, using above-mentioned normal reflection portion as hologram and record,
Then, carry out stacked to copied the hologram of volume hologram master of above-mentioned reflection-type and the hologram in above-mentioned other volume hologram recording material, above-mentioned normal reflection portion being recorded as hologram in above-mentioned volume hologram recording material.
And then, the present invention relates to the volume hologram of the reflection-type that object picture records in the mode that can regenerate arbitrarily, it is characterized in that, multiple recording has the pattern being made up of at least a portion interference fringe that arrangement forms substantially in parallel on hologram record face, and one side of above-mentioned pattern or the size of diameter are below 50 μ m.
In the case, one side of preferred above-mentioned pattern or the size of diameter are below 50 μ m.
In addition, preferred above-mentioned pattern is recorded in multiple regions of hologram, and the interval between above-mentioned zone is the more than 50 times of size of an above-mentioned pattern.
In addition, to be recorded in respect to the area of hologram be in the region below 1/10000 to preferred above-mentioned pattern.
The effect of invention
In the present invention, because repeatedly repeatedly do not there is the copying of reflecting plate of normal reflection portion, and directly carry out record in hologram mode in the time of hologram replication, so do not produce the deteriorated of resolution, can by the trickle degree of 10 μ m grade can not be visual the pattern overlapping of character etc. in hologram recording video recording and carry out record in hologram mode, can obtain as safety hologram and figure fully.In addition, in obtained hologram, there is the hologram of gamut in the two ends of pattern and common hologram is multiple or multiple stratification and mixing, and like this, due to this feature, anti-counterfeiting performance is good.
Accompanying drawing explanation:
Fig. 1 is the cut-open view of an embodiment for microtext hologram fabrication process of the present invention is described;
Fig. 2 for schematically show in volume hologram recording material, record from section interference fringe, identical with the section of Fig. 1 that forms of the normal reflection light of normal reflection pattern in the figure of shape;
Fig. 3 is the front view that is illustrated in the regeneration picture of the fine pattern recording in the situation of Fig. 2;
Fig. 4 is figure variation, identical with Fig. 1 of the embodiment of Fig. 1;
Fig. 5 is the cut-open view of another embodiment for microtext hologram fabrication process of the present invention is described;
Fig. 6 is figure in the situation of Fig. 5, identical with Fig. 2;
Fig. 7 is figure variation, identical with Fig. 5 of the embodiment of Fig. 5;
Fig. 8 is the cut-open view of an embodiment again for microtext hologram fabrication process of the present invention is described;
Fig. 9 is the figure of the height for the trickle character using as the trickle pattern that is recorded in hologram of the present invention is described;
Figure 10 is the figure that records trickle pattern in multiple regions of hologram of the present invention for illustrating.
The explanation of Reference numeral
1 volume hologram master;
2 volume hologram recording materials;
2A, 2B volume hologram recording material;
3 normal reflection patterns;
4 transparency carriers;
5 pattern plate;
6 protective films;
10 holograms (the present invention);
11 copy illumination light;
12 diffraction lights;
13 normal reflection light;
14 interference fringes;
The regeneration picture of 15 trickle patterns;
15 ' character zone;
16 central areas;
17 end regions;
18 scattered lights;
21 white illumination light;
The light (from the reflected light of central area) of 22 green wavelength;
23 orange light (from the reflected light of end regions);
31 another copy illumination light;
32 normal reflection light.
Embodiment
According to embodiment, the hologram of hologram fabrication process of the present invention and making is described below.
Ultimate principle of the present invention is, according to using the volume hologram master that the picture of subject records as reflection hologram arbitrarily, while making (copying) volume hologram identical with this master by hologram replicating method, the pattern plate that makes to be formed with the normal reflection pattern of trickle, character can not be visual etc. is situated between and is located between volume hologram recording material and volume hologram master, as holographic mirror pattern, be recorded in overlappingly in the hologram having copied.Because trickle normal reflection pattern fits tightly on volume hologram recording material, or extremely approach and arrange with it, can record in the mode of hologram thus the fine pattern of 10 μ m grades.
Fig. 1 is the cut-open view of an embodiment for microtext hologram fabrication process of the present invention is described.For the volume hologram master 1 according to reflection-type is made the volume hologram same with this master by hologram replicating method, at the light incident side that copies illumination light 11 of volume hologram master 1, the volume hologram recording material 2 of configuration photopolymer etc.Between this volume hologram master 1 and volume hologram recording material 2, according to the present invention, the pattern plate 5 that is provided with the normal reflection pattern 3 of character trickle, can not be visual being made up of the reflectance coating of chromium etc. etc. on the surface of volume hologram recording material 2 sides to the transparency carrier 4 at glass plate etc. clamps, so that index-matching fluid is mediate, or the mode directly fitting tightly, make volume hologram master 1, pattern plate 5, volume hologram recording material 2 overlaps.Under this state, make to copy illumination light 11 and roll tiltedly and inject from volume hologram recording material 2.When this incidence angle θ that copies the inclination of illumination light 11 is generally equal to recording volume type hologram master 1 with reference to angle of light, or slightly different angle.The illumination light 11 that copies being injected in volume hologram recording material 2 sees through volume type hologram recording material 2, the illumination light 11 that copies of having passed through the transparent region that there is no normal reflection pattern 3 in pattern plate 5 is injected in volume hologram master 1, and the diffraction light 12 of regenerative recording object picture is produced at the light incident side that copies illumination light 11.Pass through the diffraction light 12 of transparent region of pattern plate 5 and the illumination light 11 that copies of having injected and interfered in volume hologram recording material 2, in volume hologram recording material 2, formed Fringes of A Hologram.On the other hand, be injected into and copy illumination light 11 under the state of shape that has kept normal reflection pattern 3 in the reflector space that the normal reflection pattern 3 of pattern plate 5 exists, be reflected as normal reflection light 13, the illumination light 11 that copies of this normal reflection light 13 and incident is interfered in volume hologram recording material 2, make to be arranged in parallel the interference fringe 14 forming on the face of the recording layer of volume hologram recording material 2, be formed on overlappingly in the interference fringe that records object picture of regeneration volume hologram master 1.Be to copy illumination light 11 and region that the normal reflection light 13 that tilts overlaps owing to forming the region of this interference fringe 14, so in the section that comprises the normal that copies illumination light 11 and recording layer, as shown in Figure 1, parallelogram shape, in the section vertical with the face of Fig. 1, shape is rectangle.
The figure of the shape in the section identical with the section of Fig. 1 that Fig. 2 is the interference fringe 14 that schematically represents in volume hologram recording material 2 the normal reflection light 13 from normal reflection pattern 3 of record and form, Fig. 3 is the front view that represents the reproduced picture 15 of the fine pattern being recorded in this situation.In this case, the regeneration of trickle pattern is the elongated square shape orthogonal with the direction that copies illumination light 11 as 15.Interference fringe 14 overlaps in the interference fringe that records object picture of regeneration volume hologram master 1 and is recorded, and on the face of the recording layer of volume hologram recording material 2, arranges abreast according to certain intervals.This interference fringe 14 is also called holographic mirror, for example, in the case of making from the vertical direction of volume hologram recording material 2 white illumination light 21 injects, from recording the region of interference fringe 14, , from the region of the shape identical with the normal reflection pattern 3 of pattern plate 5, the light of the wavelength corresponding with the spacing of this interference fringe 14 is reflected (diffraction) to vertical direction, therefore be trickle at normal reflection pattern 3, in the situation of character that can not be visual etc., also can use microscope etc. to read from the volume hologram (volume hologram recording material 2) being replicated so trickle, the pattern 15 of character that can not be visual etc., can use with hologram as safety.
The half that is recording wavelength as the size (resolution) of normal reflection pattern 3 left and right, preferably in below 1/10th of recording wavelength.Say more practically, preferably one side of normal reflection pattern 3 or the size of diameter are below 50 μ m.
But, form the region of this interference fringe 14, in the section that comprises the normal that copies illumination light 11 and recording layer (face of Fig. 2) as described above, parallelogram shape as shown in the figure, comprising: the region 17 gradually shortening slightly from top to bottom or from top to bottom to the region that interference fringe is arranged in parallel the face of recording layer 16 at the back side and the interference fringe at its two ends from the surface of the recording layer of volume hologram recording material 2.In the region 17 at these two ends, owing to there is no the record of interference fringe in the face side at recording layer or rear side, thus the interval of the end of interference fringe 14 by from do not have monomer (monomer) etc. record periphery diffusion etc. and expand slightly.Thus, for example, in the case of make white illumination light 21 inject the region of interference fringe 14 from the vertical direction of volume hologram recording material 2, when the light 22 of supposing in region 16 for example green wavelength is reflected, reflect for example orange light 23 slightly long compared with its wavelength from region 17.That is, in the section that comprises the normal that copies illumination light 11 and recording layer, recorded following recording figure forming, at the two ends of drafting department of recording figure forming and the central regeneration look of drafting department is different, can be with the recording figure forming of observing than the regeneration look of its long wavelength.With the perpendicular direction of the section that comprises the normal that copies illumination light 11 and recording layer on, the region that forms the section of interference fringe 14 is rectangle, because there is no such end, region 17 of the section of Fig. 2, therefore can clearly learn according to Fig. 3, this direction of the drafting department of recording figure forming (with copying illumination light 11 perpendicular direction), in the mode that drafting department central adds lustre to again and the regeneration look at two ends is observed in the same manner, recording figure forming is carried out to record.
But; copy the volume hologram identical with this master at volume hologram recording material 2 by hologram replicating method from volume hologram master 1 in the such configuration with Fig. 1, also have the situation of configuration protection film (cover film) on the face of facing with volume hologram master 1 in volume hologram recording material 2.In addition, also there is the situation of configuration protection film on the face that is provided with reflection graphic patterns 3 in pattern plate 5.Under these circumstances; between normal reflection pattern 3 and volume hologram recording material 2, be situated between and be provided with the interval that is equivalent to this protective film amount, thus; produce the impact from the scattered light at the edge of normal reflection pattern 3, the regeneration of the pattern recording is as 15 decrease resolution.With reference to Fig. 4 to describing in this respect.In the case; in volume hologram recording material 2, on the face of volume hologram master 1, be laminated with protective film 6; in the mode that fits tightly normal reflection pattern 3 on protective film 6 towards pattern plate 5; make volume hologram recording material 2; pattern plate 5; volume hologram master 1 overlaps, and is situated between and establishes index-matching fluid, or they are directly fitted tightly between them.Under this state, making to copy illumination light 11 rolls tiltedly and injects from volume hologram recording material 2, see through volume type hologram recording material 2, pass through the illumination light 11 that copies of the transparent region that there is no normal reflection pattern 3 in pattern plate 5 and injected in volume hologram master 1, produced at the light incident side that copies illumination light 11 diffraction light 12 that looks like to regenerate to recording object.Pass through the diffraction light 12 of transparent region of pattern plate 5 and the illumination light 11 that copies of having injected and interfered in volume hologram recording material 2, in volume hologram recording material 2, formed Fringes of A Hologram.Identical with in the situation of Fig. 1 in this respect.On the other hand; the illumination light 11 that copies that is injected into the reflector space that the normal reflection pattern 3 in pattern plate 5 exists is reflected as normal reflection light 13; be injected in volume hologram recording material 2 via protective film 6; with copy illumination light 11 and interfere; make to be arranged in parallel the interference fringe 14 forming on the face of the recording layer of volume hologram recording material 2, be formed on overlappingly recording in the interference fringe that object looks like to regenerate volume hologram master 1.Wherein, owing to there being the distance of the thickness of protective film 6 between normal reflection pattern 3 and volume hologram recording material 2; so the scattered light 18 producing from the edge of normal reflection pattern 3 also with copy illumination light 11 and interfere, make near interference fringe 14 confusions edge of normal reflection pattern 3.Therefore, as shown in Figure 2, for example, in the case of making from the vertical direction of volume hologram recording material 2 white illumination light 21 injects, it is indefinite a little that the border at the edge of interference fringe 14 becomes, the regeneration of the pattern recording is as the decrease resolution of 15 (Fig. 2, Fig. 3).In fact, if the thickness of protective film 6 below 500 μ m, such impact is little.
In the microtext hologram of making in the method according to above, as used, Fig. 2 and Fig. 3 illustrate, the reproduced picture 15 of the trickle pattern forming with interference fringe 14 is on the specific direction along record surface (comprising the direction in the section of the normal that copies illumination light 11 and recording layer), two ends at drafting department are from middle regeneration look different, with the orthogonal direction of this specific direction on, pattern entirety becomes same color, therefore, read the regeneration that is recorded in the fine pattern in microtext hologram as 15 by use microscope etc., thereby it is genuine can differentiating this microtext hologram, or forge.
But, also can be unlike Fig. 1, carry out recording interference fringe 14 by the interference of normal reflection light 13 that copies illumination light 11 and reflection obliquely of injecting obliquely, and carry out recording interference fringe 14 by the normal reflection interference of light that copies illumination light and vertically reflect that is vertically injected into volume hologram recording material 2.It is high by the situation of the method for Fig. 1 that the resolution of microtext hologram in the case becomes Billy.Use Fig. 5～Fig. 8 to describe the embodiment of the method for making in this situation.
The situation of Fig. 5 is the hologram replication to volume hologram master 1, the use different situations that copy illumination light and carry out multiple recording separately that copy as holographic mirror with normal reflection pattern 3, identical with the situation of Fig. 1, make volume hologram recording material 2, pattern plate 5, volume hologram master 1 overlaps, between them, be situated between and establish index-matching fluid, or directly fit tightly, in order to copy the hologram of volume hologram master 1, with the situation of Fig. 1 similarly, making to copy illumination light 11 rolls tiltedly and injects from volume hologram recording material 2, the illumination light 11 that copies being injected in volume hologram recording material 2 sees through volume type hologram recording material 2, by the transparent region that there is no normal reflection pattern 3 in pattern plate 5, inject in volume hologram master 1, the diffraction light 12 of regenerative recording object picture is produced in reflection side.Passed through the diffraction light 12 of transparent region of pattern plate 5 and the illumination light 11 that copies of having injected interferes in volume hologram recording material 2, in volume hologram recording material 2, form the Fringes of A Hologram identical with volume hologram master 1, volume hologram master 1 by hologram replication in volume hologram recording material 2.
On the other hand, when the region that the normal reflection pattern 3 in pattern plate 5 exists, from a side identical with copying illumination light 11 vertically make another copy illumination light 31 side by side or front and back while injecting volume hologram recording material 2, see through volume type hologram recording material 2, keeping at the normal reflection pattern 3 of pattern plate 5 under the state of shape of this pattern, vertically be reflected as normal reflection light 32, this normal reflection light 32 and the illumination light 31 that copies of having injected are interfered in volume hologram recording material 2, make to be arranged in parallel the interference fringe 14 forming on the face of the recording layer of volume hologram recording material 2, be formed on overlappingly in the interference fringe that records object picture of regeneration volume hologram master 1.
The in the situation that of this method for making, due in the interference fringe 14 being recorded, copy illumination light 31, normal reflection light 32 is all perpendicular with record surface, so as shown in Figure 6, shape is all rectangle in the section of any, for example, in the case of making from the vertical direction of volume hologram recording material 2 white illumination light 21 injects, from recording the region of interference fringe 14, , from the region of the shape identical with the normal reflection pattern 3 of pattern plate 5 by with the light of the corresponding wavelength of the spacing of this interference fringe 14, for example the light 22 of green wavelength is to vertical direction reflection (diffraction), therefore be trickle at normal reflection pattern 3, in the situation of character that can not be visual etc., also can use microscope etc. to read from the volume hologram (volume hologram recording material 2) having copied so trickle, the pattern 15 of character that can not be visual etc., can use with hologram as safety.Because in the interference fringe 14 with this method for making record, there is not the such part of end regions 17 shown in Fig. 2, so as shown in Figure 3, different and the situation about being reproduced of the regeneration look of its central authorities of two ends and this that do not occur in drafting department on specific direction is reproduced with identical color corresponding to the region entirety of normal reflection pattern 3.
The situation of Fig. 5 is to use the different illumination light that copy respectively, the method of carrying out multiple recording that copies as holographic mirror of the holographic copy to volume hologram master 1 and normal reflection pattern 3, but, also can be on volume hologram recording material 2, the replication region as holographic mirror of the replication region to volume hologram master 1 and normal reflection pattern 3 carries out region division and makes.Fig. 7 is the figure that represents this example, the illumination light 31 that copies that copies illumination light 11 and the incident area of the diffraction light 12 from volume hologram master 1, copies use with the normal reflection pattern 3 of pattern plate 5 that copies use on same volume hologram recording material 2, volume hologram master 1 is separated with the incident area of its normal reflection light 32, at the former copying hologram of regional record volume hologram master 1, the holographic mirror of regenerating at the latter's regional record pair and the trickle pattern of normal reflection pattern 3 same shapes.
In addition, also can make respectively the copying hologram of the copying hologram of volume hologram master 1 and the normal reflection pattern 3 of pattern plate 5, after making, both are overlapping.Fig. 8 represents this example.In the case, use 2 pieces of volume hologram recording material 2A, 2B, as shown in Fig. 8 (a), make a side volume hologram recording material 2A directly fit tightly normal reflection pattern 3 sides in pattern plate 5, or fit tightly with it via index-matching fluid, the illumination light 31 that copies that makes the normal reflection pattern 3 of pattern plate 5 copy use from volume hologram recording material 2A side is vertically injected, this copies illumination light 31 and sees through volume type hologram recording material 2A, the illumination light 31 that copies being injected in the reflector space that the normal reflection pattern 3 in pattern plate 5 exists is vertically reflected as normal reflection light 32 under the state of shape that keeps normal reflection pattern 3, this normal reflection light 32 and the illumination light 31 that copies of having injected are interfered in volume hologram recording material 2A, the holographic mirror that record is regenerated to the trickle pattern of the shape identical with normal reflection pattern 3.
The opposing party's volume hologram recording material 2B is as shown in Fig. 8 (b), fit tightly with volume hologram master 1, or betwixt via index-matching fluid, dividing plate etc. and fitting tightly with it, identical with in the situation of Fig. 1, copying illumination light 11 rolls and tiltedly injects from volume hologram recording material 2B, see through volume type hologram recording material 2B, inject in volume hologram master 1, be created in the diffraction light 12 of regenerative recording object picture here in reflection side, diffraction light 12 and the illumination light 11 that copies of having injected are interfered in volume hologram recording material 2B, make the copying hologram of volume hologram master 1.
Then, as shown in Fig. 8 (c), by the volume hologram recording material 2A of the hologram of the stacked trickle pattern that has recorded the shape identical with normal reflection pattern 3 integrally, with the volume hologram recording material 2B of copying hologram that has recorded volume hologram master 1, thereby the hologram of the microtext hologram that forms safe use overlapping.
But, when analyze hologram that the method for making of the invention with above-mentioned is made can not be visual the size of the pattern 15 of regenerating such as character time, because pattern 15 copies and obtains in hologram mode (holographic) the normal reflection pattern 3 in pattern plate 5 as holographic mirror, even if so by the how fine normal reflection pattern 3 of construction drawing chopping board 5 such as photomask manufacture craft, still become at copy process the pattern 15 that certain degree is fuzzy.In fact, although as character that can not be visual etc. and more than the size on one side of the pattern 15 of regeneration or diameter become 10 μ m, can be formed as in prior art is below difficult 50 μ m.For example, as shown in Figure 9, in the time that pattern 15 is small character, can make the height a of character zone 15 ' in the scope of 10～50 μ m.Will be with the such small character of the simple magnascope amplifying observation of magnifier etc. time, since the multiplying power of such magnifier is generally × 10～× 20, even if so height a is 50 μ m, also only has 0.5～1.0mm left and right, be difficult to find the record of micro-character, be suitable for as safety hologram.
In addition, in the time being such holographic Figure 10 shown in Figure 10 by the hologram of fine pattern 15 that has recorded so micro-character etc., the in the situation that of only having recorded place's pattern 15 in holographic Figure 10, become situation about can not observe owing to may existing by damage, dirt etc., so more than wishing to record as shown in Figure 10 2 places, preferably record 3 places.
In addition, in this case, be the more than 50 times of size a on one side of pattern 15 by the interval b that makes to be recorded between the pattern 15 of many places, thereby in the time will using microscope to carry out amplifying observation, no longer include two patterns 15 and enter the situation in field of microscope, discovery becomes extremely extremely difficulty, and can prevent that the trickle pattern 15 of trickle character etc. becomes the situation of the state that can not observe because of the impact of damage, pollution.
In addition, in holographic Figure 10, record the trickle pattern 15 of micro-character etc. and as safe use, wish to limit the posting field of trickle pattern 15, with respect to the area of hologram, the region of trickle pattern 15 is below 1/10000, preferably below 1/20000, thus, the trickle pattern 15 of safe use like this becomes and is difficult to find, security further improves.
Above, according to embodiment, hologram fabrication process of the present invention and the hologram made are described, the present invention is not limited to these, can carry out various distortion.
Industry utilize possibility
As mentioned above, according to the hologram of hologram fabrication process of the present invention and making, because repeatedly repeatedly do not there is the copying of reflecting plate of normal reflection portion, and directly carry out record in hologram mode in the time of hologram replication, so do not produce the decline of resolution, can, by upper in hologram recording video recording the pattern overlapping of the character trickle, can not be visual of 10 μ m grades etc., carry out record in hologram mode, can obtain as safety hologram and enough holograms.In addition, in obtained hologram, the multiple or multiple stratification of the hologram of the two ends gamut of pattern and common hologram and mixing, due to this feature, anti-counterfeiting performance is good.
Claims (10)
1. a hologram fabrication process, wherein, copy illumination light light incident side configuration volume hologram recording material at the volume hologram master of reflection-type, by making to be injected into copying illumination light and interfering in volume hologram recording material from the diffraction light of the volume hologram master of reflection-type in volume hologram recording material, copy thus the volume hologram master of reflection-type, this hologram fabrication process is characterised in that
Between the volume hologram master and above-mentioned volume hologram recording material of above-mentioned reflection-type, insertion has the reflecting plate of normal reflection portion, copy illumination light and interfere in above-mentioned volume hologram recording material from the normal reflection light of the normal reflection portion of said reflection plate by making to be injected into above-mentioned in above-mentioned volume hologram recording material, thus in the hologram of volume hologram master that has copied above-mentioned reflection-type, record above-mentioned normal reflection portion as hologram multiplely.
2. a hologram, can regenerate to record the volume hologram of the reflection-type of object picture arbitrarily, it is characterized in that, multiple recording has the pattern being made up of at least a portion interference fringe that arrangement forms substantially in parallel on hologram record face, above-mentioned pattern is in the situation that making white illumination light inject hologram record face from vertical direction, on the specific direction along record surface, different with the regeneration look of its central authorities at the two ends of pattern, along record surface with the orthogonal direction of this specific direction on, can observe with identical regeneration color in pattern entirety.
3. hologram according to claim 2, is characterized in that, more than one side of above-mentioned pattern or diameter are of a size of 10 μ m and below 50 μ m.
4. according to the hologram described in claim 2 or 3, it is characterized in that, above-mentioned pattern is recorded in multiple regions of hologram, and the interval between above-mentioned zone is the more than 50 times of size of an above-mentioned pattern.
5. according to the hologram described in any one in claim 2～4, it is characterized in that, it is in the region below 1/10000 that above-mentioned pattern is recorded in respect to the area of hologram.
6. a hologram fabrication process, wherein, copy illumination light light incident side configuration volume hologram recording material at the volume hologram master of reflection-type, by making to be injected into copying illumination light and interfering in volume hologram recording material from the diffraction light of the volume hologram master of reflection-type in volume hologram recording material, copy thus the volume hologram master of reflection-type, this hologram fabrication methods is characterised in that
Between the volume hologram master and above-mentioned volume hologram recording material of above-mentioned reflection-type, insertion has the reflecting plate of normal reflection portion, to copy normal reflection portion other compared with illumination light and copy illumination light with above-mentioned, generally perpendicularly inject the region with normal reflection portion of said reflection plate with above-mentioned volume hologram recording material, copy illumination light and interfere in above-mentioned volume hologram recording material from the normal reflection light of the normal reflection portion of said reflection plate by making to be injected into above-mentioned normal reflection portion in above-mentioned volume hologram recording material, thus in the hologram of volume hologram master that has copied above-mentioned reflection-type, record above-mentioned normal reflection portion as hologram multiplely.
7. a hologram fabrication process, wherein, copy illumination light light incident side configuration volume hologram recording material at the volume hologram master of reflection-type, by making to be injected into copying illumination light and interfering in volume hologram recording material from the diffraction light of the volume hologram master of reflection-type in volume hologram recording material, copy thus the volume hologram master of reflection-type, this hologram fabrication process is characterised in that
By volume hologram recording material configuration other compared with above-mentioned volume hologram recording material in having on the reflecting plate of normal reflection portion, from above-mentioned other volume hologram recording material side, to copy normal reflection portion other compared with illumination light and copy illumination light and inject in above-mentioned other volume hologram recording material with above-mentioned, copy illumination light and interfere in above-mentioned other volume hologram recording material with the normal reflection light of the normal reflection portion from said reflection plate by making to be injected into above-mentioned normal reflection portion in above-mentioned other volume hologram recording material, thus in above-mentioned other volume hologram recording material, using above-mentioned normal reflection portion as hologram and record,
Then, carry out stacked to copied the hologram of volume hologram master of above-mentioned reflection-type and the hologram in above-mentioned other volume hologram recording material, above-mentioned normal reflection portion being recorded as hologram in above-mentioned volume hologram recording material.
8. a hologram, can regenerate to record the volume hologram of the reflection-type of object picture arbitrarily, it is characterized in that, multiple recording has the pattern being made up of at least a portion interference fringe that arrangement forms substantially in parallel on hologram record face, more than one side of above-mentioned pattern or diameter are of a size of 10 μ m and below 50 μ m.
9. hologram according to claim 8, is characterized in that, above-mentioned pattern is recorded in multiple regions of hologram, and the spacing between above-mentioned zone is the more than 50 times of size of an above-mentioned pattern.
10. hologram according to claim 8 or claim 9, is characterized in that, the area that above-mentioned pattern is recorded in relative hologram is in the region below 1/10000.
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| JP2009009471A JP5282890B2 (en) | 2008-02-01 | 2009-01-20 | Hologram production method and produced hologram |
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| CN112540525B (en) * | 2020-12-01 | 2022-03-22 | 牟维忠 | Manufacturing method of interference fringe three-dimensional mold, mold and copying method thereof |
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| EP1278107A2 (en) * | 2001-07-18 | 2003-01-22 | Dai Nippon Printing Co., Ltd. | Hologram recording film with additional information and recording method therefor |
| JP2003139957A (en) * | 2001-10-31 | 2003-05-14 | Sharp Corp | Method of manufacturing phase type volume hologram optical element |
| JP2006023670A (en) * | 2004-07-09 | 2006-01-26 | Fuji Xerox Co Ltd | Hologram recording method, optical recording medium and hologram recording apparatus |
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| JP3897318B2 (en) * | 1997-06-27 | 2007-03-22 | 大日本印刷株式会社 | Anti-counterfeit hologram and forgery hologram detection method |
| JP3945728B2 (en) * | 1998-03-09 | 2007-07-18 | 大日本印刷株式会社 | Hologram recording film recording method |
| JP4548680B2 (en) * | 1999-04-12 | 2010-09-22 | 大日本印刷株式会社 | Color hologram display and method for producing the same |
| JP4605625B2 (en) * | 2001-08-09 | 2011-01-05 | 大日本印刷株式会社 | Hologram recording film with additional information and recording method thereof |
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| US20060232838A1 (en) * | 2005-04-13 | 2006-10-19 | Holoptics Sa | Method and apparatus for forming a surface-relief hologram mask |
| JP4816216B2 (en) * | 2006-04-14 | 2011-11-16 | 大日本印刷株式会社 | Light diffraction structure |
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| EP1278107A2 (en) * | 2001-07-18 | 2003-01-22 | Dai Nippon Printing Co., Ltd. | Hologram recording film with additional information and recording method therefor |
| JP2003139957A (en) * | 2001-10-31 | 2003-05-14 | Sharp Corp | Method of manufacturing phase type volume hologram optical element |
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