CN102736151B - Improved structure of reflecting light cone of diamond-grade light-reflecting film - Google Patents
Improved structure of reflecting light cone of diamond-grade light-reflecting film Download PDFInfo
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Abstract
The invention discloses an improved structural design of a reflecting light cone of a diamond-grade light-reflecting film. An improved structure of the reflecting light cone of the diamond-grade light-reflecting film consists of a series of light-reflecting elements, wherein three side faces of each light-reflecting element are cut by three staggered V-shaped cutters; and an included angle between each two of the three staggered V-shaped cutters is 60 DEG. In order to fulfill the aims of forming a light cone effect by light which is reflected by a light-reflecting material and obtaining an ideal light cone or a divergent contour, grooves of the same kind are repeated in certain quantity, each groove angle in a repetition period is different from the adjacent groove angle, and the size of the groove angles is increased or decreased with equal difference. The grooves of other two kinds are repeated in the same quantity and at the same groove angle. If the grooves are repeated at different groove angles, elements on the light-reflecting material are divided into a plurality of repeated large units, and each large unit comprises a plurality of light-reflecting elements which are different in shape.
Description
Technical field
The present invention relates to a kind of reflectorized material technical field, be specifically related to a kind of structure and job operation thereof of improving diamond reflecting film reflective taper.
Background technology
Regression reflecting material has the characteristic that incident light An Yuan road is returned, and this specific character is different from mirror-reflection and diffuse reflection.This specific character of regression reflecting material makes it be widely used in the aspects such as various traffic alarms and personal security.For example warning against danger mark, traffic control mark and the navigation marker on warning notice or the road on vehicle, billboard etc.
Current reflectorized material has two types: the reflectorized material and the reflectorized material with microprism array structure with micro-sphere array structure.The reflectorized material of micro-sphere array structure is known as again the reflectorized material of " microballon " array structure, and its reflector layer is made up of a lot of little microballons, and these microballons are evenly arranged on bonding coat closely, and a part for microballoon is embedded in bonding coat.Microbead Reflective Material has wide incident angle and viewing angle, but its light echo reflectivity is lower, the process relative complex of back side metallization film.Chinese patent CN2383080Y etc. has introduced the structure of Microbead Reflective Material.The reflectorized material of microprism array structure is generally made up of with the reflector layer of cube microprism the thin hyaline layer of one deck (body layer) and surface.The cube microprism of these standards is made up of three faces, and these three faces are orthogonal between two.Can be divided into rescinded angle microprism and complete microprism according to the structure difference of cube microprism.Three faces of standard rescinded angle microprism are isosceles right triangles, and three faces of complete microprism are squares.Microprism reflectorized material is because its good reflective function is widely used in every field.Structure and the method for making of microprism reflectorized material have been described at Chinese patent CN101738661A, CN1208375A.
The quality of general evaluation regression reflecting material behavior has four indexs: wide-angle (Entrance angularity), the homogeneity of reflective taper and the processibility of structure of anisotropy (Orientation), incident light.Can improve anisotropy by rotary reflective element, can improve its wide-angle by the reflective element of deflection, can improve the homogeneity of reflective taper by the side of diffraction mode or the reflective element of deflection, reduce difficulty of processing and time by rational design, thereby improve the processibility of structure.
The first operation of manufacturing microprism reflectorized material is to manufacture the master mold (formpiston) of surface with micro-geometry, and the surface structure of master mold is exactly the geometry of the reflective element of final products.Then utilize this master mold by suitable technology (for example nickel galvanoplastics) make for the production of molding tool (the namely cavity block of mould), recycling cavity block carry out compacted products.Manufacture the method for master mold and have three kinds: pin the tie in technology of tying up, substrate combination technique and overall process technology.
The pin technology of tying up that ties in is exactly to be bundled and form master mold with the geometry of microprism by a lot of ends.United States Patent (USP) U.S.Pat.NO.1591572 (Stimson) and U.S.Pat.NO.3926402(Heenan) introduced dependency structure and manufacture.The pin technology of tying up that ties in can be manufactured a lot of different reflective elements in a master mold, because each the reflective element in master mold is to manufacture separately.But such technology is unpractical for the manufacture of small reflective element, because the reflective unit that needs to manufacture have very little of a lot of and size.
Substrate combination technique is combined and is formed master mold by a lot of narrow substrates, on these narrow substrates, is arranging micro-geometry.Substrate combination technique has been saved a lot of labours with respect to the pin technology of tying up that ties in because in substrate combination technique seldom a part be independent manufacture.For example on a narrow substrate, generally there are 400-1000 independent elements, and on a pin bundle, only have an independent element.Tie in compared with the technology of tying up with pin, substrate combination technique has poor flexible design degree.U.S.Pat.NO.6015214 (Heenan et al.); U.S.Pat.NO.5981032 (Smith); U.S.Pat.NO.6057860 (Luttrell) has introduced the related example of substrate combination technique.
Entirety process technology is exactly to cut on a flat workplace by a series of V-arrangement cuttves, forms the master mold with rescinded angle micro-prism structure.This several rows of reflective element is to be formed by the V-arrangement cutter cutting of three types, and these three kinds of V-arrangement cuttves are mutually 60 degree.The bottom surface of these reflective elements is all identical equilateral triangle (referring to U.S.Pat.NO.3712706 (Stamm)).But the angle between these three kinds of V-arrangement cuttves can not be also 60 degree, the reflective element of formation is (referring to U.S.Pat.NO.4588258 (Hoopman)) that tilt.In overall process technology, the side of same row's element is formed the cutting of V-arrangement cutter by same.For this reason, overall process technology can produce the reflective element that size is very little accurately, but has reduced the flexible design degree of element structure, has affected the integral inverted light characteristic of reflectorized material.
In actual utilization, the angle pyramid reflectorized material of standard is infeasible.For example, the sign board that light is made by reflectorized material from the car light directive of automobile, then light is reflected back car light by reflectorized material An Yuan road, because people's eyes and car light be not in same position, because this person can't see mark.The light only reflecting enters people's eyes, and mark could be in sight.Therefore, the light reflecting need to be the light of a misconvergence of beams, just as the reflective taper of mentioning before this.In traditional reflectorized material, the method that forms light cone has: (1), the face out-of-flatness (being similar to diffuse reflection) that makes to reflect element; (2), by diffraction of light effect.With reference to U.S.Pat.No.3712706(Stamm); (3), change the geometry of reflective element, make three dihedral angles of reflective element depart from orthogonality relation.
H.D.Eckhardt delivers paper " optical principle of cube microprism " that paper " naive model of cube reflector phenomenon " about optics and N.E.Rityn deliver and has disclosed cube-corner prism scatter incident light and form the principle of diverging light in July, 1971.As article is described, the face of rotary reflective element, the face that makes it is not orthogonal or orthogonal.Be distributed to different directions (distributing) with regard to the light that causes being reflected by reflective element centered by the opposite direction of incident light like this.Thereby the light that obtains dispersing.
The structure that a lot of design effort change reflectorized materials improves the performance of reflectorized material, but its use that still had a lot of drawbacks limit.Enterprise wishes to find more advanced project organization and manufacture method to manufacture reflectorized material, allows this reflectorized material have good reflective function and manufactures efficiency.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of structure and job operation thereof of the improvement diamond reflecting film reflective taper with reflective function is provided.
Consider the problems referred to above of prior art, according to an aspect disclosed by the invention, the present invention by the following technical solutions:
The present invention proposes a kind of new microprism reflectorized material structure, and this structure is formed by specific mode cutting by V-arrangement cutter.In brief, this reflective structure is made up of a series of reflective elements (single reflecting unit), three sides of reflective element are to form by three staggered V-arrangement cutter cuttings, and these three staggered V-arrangement cuttves are mutually 60 degree, and the cutting of V-arrangement cutter forms vee-cut later on workplace.In order to allow the light that reflectorized material reflects form light cone effect, the profile that obtains a desirable light cone pattern (stacks of 6 patterns of for example above-mentioned all elements) or disperse, allow same class groove repeat with the groove of some, in the repetition period, each gash angle is different from the gash angle closing on, and the size of gash angle becomes equal difference increase or reduce.In a repetitive, the quantity of different gash angles represents with Q, and Q is generally not more than 20.All the other two classes also repeat with identical quantity and identical gash angle.The result that different gash angles repeat is that the element on reflectorized material is divided into multiple repetition big units, has comprised a lot of variform reflective elements in each big unit.Wherein have a reflective element criteria of right and wrong at least, this off-gauge reflective element has at least a face to depart from the corresponding surface of the reflective element of standard.Even if the dihedral angle of these reflective elements is not all orthogonal, but still be counted as the reflective element of microprism, because it is similar to the desirable reflective element of microprism in shape and function.
The shape that difform reflective element reflects the incident light 6 patterns that obtain is different.It is the stack of reflecting 6 patterns that obtain by the reflective element of all differences that the reflectorized material of manufacture of the present invention reflects the light cone pattern obtaining.Six of reflective element pattern shapes are can selecteed (by changing the size of reflective element dihedral angle) in the present invention, thereby obtain desirable light cone pattern or scattering profile.But this selection is restricted, because V-shaped groove cuts out the face of multiple reflective elements, V-shaped groove cuts out the face (the reflective element of two row is respectively on the both sides of V-shaped groove) of the reflective element of two row.If change the size of V-shaped groove angle, this two row all reflective elements adjacent with V-shaped groove will be changed.Although there is such restriction in design, still can design good structure by such mode.
Next will describe reflectorized material structure of the present invention in detail, obtain desirable light cone by specific mode cutting.
Improve a structure for diamond reflecting film reflective taper, the structure of described improvement diamond reflecting film reflective taper is made up of the reflective element of prism of serial arrangement.
In order to realize better the present invention, further technical scheme is:
As preferably, in described improvement diamond reflecting film reflective taper structure, portray the reflective element of prism of going into serial arrangement by the V-shaped groove of three types.
As preferably, the V-shaped groove of described three types, the V-shaped groove of described same type be arranged in parallel.
As preferably, the distance between the V-shaped groove that described same type be arranged in parallel equates, its scope is 25 microns to 1000 microns.
As preferably, the V-shaped groove of described same type repeats with some, and a repetition period of same class V-shaped groove has two different groove angles at least.
As preferably, the V-shaped groove number with different groove angles of described same class V-shaped groove within a repetition period is not more than 20.
As preferably, in the repetition period of described same class V-shaped groove, the size of groove angle becomes equal difference increase or reduce.
As preferably, the size variation scope of described groove angle is ± 1 degree.
As preferably, between the V-shaped groove of described three types, be mutually 60 degree angles.
As a kind of job operation of the said goods, the present invention can also be:
Improve a job operation for the structure of diamond reflecting film reflective taper, the reflective element of described lens type forms the reflective element of lens type by the staggered cutting of V-arrangement diamond tool of three types.
Compared with prior art, one of beneficial effect of the present invention is:
Compared with prior art, the advantage of the structure of improvement diamond reflecting film reflective taper of the present invention is to optimize diamond reflecting film reflective taper structure, thereby diamond reflecting film reflective taper structure is had the following advantages:
The reflectorized material (1) manufactured with the present invention (as traffic sign etc.), reflect the incident light the light cone pattern obtaining can control, to such an extent as to light is seen being required the people who sees greatly.For example, we can control the size at the distribution of light cone light intensity and light cone angle.
(2) reflectorized material of manufacture of the present invention has good anisotropy, because there is He Fu unit, positive unit in the structure of reflectorized material, negative unit relatively with positive finite element rotation 60 degree, two kinds superimposed reduced anisotropic inhomogeneous, thereby improved anisotropy.
(3) reflectorized material of manufacture of the present invention is to manufacture master mold by overall processing mode, and V-arrangement cutter is to move along a straight line in the time of face preparation, therefore can cut out accurately reflective element.With respect to pin the tie in technology of tying up and substrate combination technique, overall process technology can greatly reduce labour, reduces costs in addition.
These features make reflectorized material of the present invention have good practicality.
Brief description of the drawings
Fig. 1: the layer structural drawing of rescinded angle microprism reflectorized material;
Fig. 2: the back view of part of standards rescinded angle microprism reflectorized material reflector layer;
Fig. 3: the enlarged drawing of a reflecting unit in Fig. 2;
Fig. 4: the sectional view of B-B in Fig. 2;
Fig. 5: the anisotropy schematic diagram of rescinded angle microprism reflectorized material;
Fig. 6: rescinded angle microprism reflectorized material anisotropy simulation result figure;
Fig. 7: the wide-angle schematic diagram of rescinded angle microprism reflectorized material;
Fig. 8: rescinded angle microprism reflectorized material wide-angle simulation result figure;
Fig. 9: the light cone of rescinded angle microprism reflectorized material forms schematic diagram;
Figure 10 a: the light cone pattern diagram that single reflective element obtains while not changing dihedral angle;
Figure 10 b: the light cone pattern diagram that single reflective element obtains while changing a dihedral angle;
Figure 10 c: the light cone pattern diagram that single reflective element obtains while changing two dihedral angles;
Figure 10 d: the light cone pattern diagram that single reflective element obtains while changing three dihedral angles;
Figure 11: the schematic diagram of describing relation between the dihedral angle of reflective element and V-shaped groove;
Figure 12: the back view of the representative rescinded angle microprism reflectorized material reflector layer of the present invention;
Figure 13: the sectional view of C-C in Figure 12;
Figure 14: the different number Q of gash angle of the present invention are the reflective element details drawing of 4 o'clock;
Figure 15 a-15c: the different number Q of gash angle of the present invention are 4 o'clock, incident angle φ is 60 degree, θ is respectively 0 degree, 15 degree, the 30 light cone pattern diagram that form while spending;
Figure 16 a-16c: the different number Q of gash angle of the present invention are 4 o'clock, incidence angle θ is 20 degree, φ is respectively 0 degree, 30 degree, the 60 light cone pattern diagram that form while spending;
Figure 17: the different number Q of gash angle of the present invention are the reflective element details drawing of 3 o'clock;
Figure 18 a-18c: the different number Q of gash angle of the present invention are 3 o'clock, incident angle φ is 60 degree, θ is respectively 0 degree, 15 degree, the 30 light cone pattern diagram that form while spending;
Figure 19 a-19c: the different number Q of gash angle of the present invention are 3 o'clock, incidence angle θ is 20 degree, φ is respectively 0 degree, 30 degree, the 60 light cone pattern diagram that form while spending.
Figure 20 a-20c: the different number Q of gash angle of the present invention are 4 o'clock, incident angle φ is 60 degree, θ is respectively 0 degree, 15 degree, the 30 light cone pattern diagram that form while spending;
Figure 21 a-21c: the different number Q of gash angle of the present invention are 4 o'clock, incidence angle θ is 20 degree, φ is respectively 0 degree, 30 degree, the 60 light cone pattern diagram that form while spending.
Figure 22 a-22c: the different number Q of gash angle of the present invention are 3 o'clock, incident angle φ is 60 degree, θ is respectively 0 degree, 15 degree, the 30 light cone pattern diagram that form while spending;
Figure 23 a-23c: the different number Q of gash angle of the present invention are 3 o'clock, incidence angle θ is 20 degree, φ is respectively 0 degree, 30 degree, the 60 light cone pattern diagram that form while spending.
In figure:
Reflectorized material 100, protective seam 110, body layer 120, reflector layer 130, sealant 140, adhesive linkage 150, peel off ply of paper 160;
Front surface 111, reflective element 112, air bag 113, bearing 114;
Reflecting material 10, groove 11, groove 12, groove 13, gash angle axis 18, face 21, face 22, face 23, line 24, line 25, line 26, reflective element 27;
Groove type M, groove type N, groove type O, groove m1, groove m2, groove m3, groove m4, groove n1, groove n2, groove n3, groove n4, groove O1, groove O2, groove O3, groove O4, gash angle quantity Q, the difference β of gash angle, incident direction of light (θ, φ)
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
" the reflective element " mentioned in the present invention refers to the cube structure on the reflector layer surface of reflectorized material, if Fig. 2 (27) are single reflecting units; " the microprism reflectorized material " mentioned refers to that its reflector layer has the reflective element of cubical micro-prism structure, can be divided into the reflective element of rescinded angle microprism and the reflective element of complete microprism according to the structure difference of reflective element.The feature of the reflective element of rescinded angle microprism of standard be exactly three faces of component be isosceles right triangle and orthogonal between two, and three faces of the complete microprism element of composition standard are squares and orthogonal between two.What relate in the present invention is rescinded angle microprism.Such reflectorized material is also known as " reflector " or " reflective membrane " sometimes; " reflective taper " mentioned refers to that incident light is reflected material and reflects, and with the tapered light of the opposite direction diverging of incident light, the light of this taper is called reflective taper; " the V-arrangement cutter " mentioned refers to the diamond cutter that is similar to v-shaped structure adopting while making master mold.
In order to obtain a desirable light cone effect, the present invention has proposed a kind of novel structure on the basis of rescinded angle microprism reflectorized material, and this structure not only can produce desirable light cone effect, also has good processibility, reduce greatly manufacturing cost, increase work efficiency.
As shown in Figure 1, the reflectorized material 100 of manufacture of the present invention comprises: protective seam 110, body layer 120, reflector layer 130, sealant 140, adhesive linkage 150, peel off ply of paper 160.Protective seam is that (scratch, oil stain and the water of for example external carbuncle is gathered in surface affect the light echo reflectivity of reflectorized material, shielding of ultraviolet, alleviation reflectorized material aging etc. for the destruction that is subject to external environment for protecting reflectorized material to avoid.); Body layer is manufactured by the method for mold pressing together with reflector layer being generally, and its material is identical is all transparent, and the lower surface of reflector layer is with the reflective element 112 of a lot of microprisms, and these reflective elements have the function that incident light is returned; Sealant claims again " supporting layer ", and its effect is be connected with reflector layer and produce the air bag 113 of sealing in centre, and at bearing, 114 places are connected with reflector layer, and the method for connection has ultrasonic soldering, thermal weld etc.; Adhesive linkage forms by having stickum, such as pressure sensitive adhesive, hot melt adhesive etc.Can directly be bonded at the place that needs stickup; The effect of peeling off ply of paper is protection adhesive linkage, first will peel off before use ply of paper and open.Incident light enters from front surface 111 as shown in the figure, through protective seam and body layer, then enters reflector layer, through three reflecting surface effects of reflective element 112, then returns by former direction.
What Fig. 2 described is the back view of standard rescinded angle microprism reflectorized material reflector layer, has the reflective element of a lot of compact arranged microprisms at the back side of reflecting material 10.As shown in Figure 2, these reflective elements are to be formed by the V-arrangement cutter cutting of three types, and three kinds of V-arrangement cutter cuttings form the V-shaped groove of three types later.These three kinds of V-shaped grooves are respectively with M, N, O representative, and unidirectional V-shaped groove belongs to same type (for example groove 11, all in same direction, belongs to the V-shaped groove of O class, and same groove 12 belongs to the V-shaped groove of M class, and groove 13 belongs to the V-shaped groove of N class).As shown in the figure, the V-shaped groove of M class is parallel with Y-axis, and the angle between the V-shaped groove of N class and x axle becomes 30 degree, and between the V-shaped groove of O class and x axle, angle becomes 150 degree, is mutually into 60 degree angles between three kinds of V-shaped grooves.This three types V-shaped groove be all that equally spaced (for example, the distance between distance and the groove 13 between the distance between groove 11, groove 12 is all d.The size of reflective element is to be determined by the distance between V-shaped groove and V-shaped groove angle, and the reflective element H crossing with substrate is generally 25 microns to 1000 microns.
In the repetition period of described same class V-shaped groove, the size of groove angle becomes equal difference increase or reduce.The size variation scope of described groove angle is ± 1 degree.
As shown in Figure 3, the reflective element 27 of standard rescinded angle microprism reflectorized material is made up of three faces, and these three faces are orthogonal between two, and two face is given a line mutually, therefore there are three lines, the bottom surface of reflective element is an equilateral triangle.As Fig. 2, reflective element 27 is made up of face 21,22,23, and these faces are all to be formed by the cutting of V-arrangement cutter.For example, face 21 is to be formed by the V-arrangement cutter cutting of M class, and face 22 is to be formed by the cutting of N class V-arrangement cutter, and face 23 is to be formed by the cutting of O class V-arrangement cutter.Just as previously mentioned, the cutting of V-arrangement cutter forms V-shaped groove later, and two dissimilar V-shaped grooves intersect at a line, and form a dihedral angle, and the size of this dihedral angle is determined by the angle of V-shaped groove.For example, the groove 12 of M type intersects at the line 24 of reflective element with the groove 13 of N type, and has formed a dihedral angle.The size of this dihedral angle is to be determined by the size of these two gash angles; The groove 12 of M type intersects at a line (26) of reflective element with the groove 11 of O type, and forms a dihedral angle, and the size of this dihedral angle is determined by the size of these two gash angles; The groove 11 of O type intersects at a line 25 of reflective element with the groove 13 of N type, and forms a dihedral angle, and the size of this dihedral angle is that the size of these two gash angles determines.In the reflective element of standard rescinded angle microprism reflectorized material, the size of these dihedral angles is 90 degree, and we claim that so reflective element is the reflective element of standard.
As Fig. 4, be the sectional view of Fig. 2 B-B, description be the V-shaped groove structure of standard rescinded angle microprism reflectorized material, m1, m2, m3, m4 are respectively four grooves, all belong to the groove of M type, corresponding with M class groove in Fig. 2.Their gash angle all equates, its size is 32 points of 70 degree.32 points of 70 degree being defined as to the standard angle of V-shaped groove here, is 90 degree (V-shaped groove is 32 points of 70 degree in other words, can obtain the reflective element of standard) because the groove of this angle can make the dihedral angle of reflective element.The 18th, the axis of gash angle, it divides gash angle equally and perpendicular to bottom surface.
As everyone knows, the quality of evaluation reflectorized material structure has four indexs: the anisotropy (Orientation) of incident light, wide-angle (Entrance angularity), the homogeneity of reflective taper and the processibility of structure of incident light.
As shown in Figure 5, description be the anisotropy schematic diagram of reflectorized material incident light, incident direction of light by
represent.So-called anisotropy is exactly in the situation that angle θ is constant, and incident light is taking Z axis as axle rotating 360 degrees, namely
angle becomes the process of 360 degree from 0 degree.Now each
a corresponding light echo reflectivity, due to the special structure of reflectorized material, each
corresponding light echo reflectivity is not identical, then all light echo reflectivity is marked on a coordinate system.
If Fig. 6 is rescinded angle microprism reflectorized material anisotropy simulation result figure, the θ angle of its incident light is respectively 10 degree, 20 degree, 30 degree, and in figure, radius of a circle size represents the size of light echo reflectivity, the numerical value representative that circumference encloses
the size at angle.Exist as we can see from the figure
be less than other angles at 30 degree, 90 degree, 150 degree, 210 degree, the light echo reflectivity of 270 degree, 330 while spending, especially in the time that the θ of incident angle increases, performance more obvious.Optimal anisotropy simulation result figure is that all light echo reflectivity all equate or approach.
As shown in Figure 7, description be the wide-angle schematic diagram of rescinded angle microprism reflectorized material, so-called wide-angle is exactly that incident light exists
in the constant situation in angle, θ angle changes, and variation range is that 0 degree is to 90 degree.Equally, a corresponding light echo reflectivity in θ angle, is then marked on all light echo reflectivity on a coordinate.As Fig. 8, be rescinded angle microprism reflectorized material wide-angle simulation result figure, its incident light
angle is 30 degree.Horizontal ordinate represents the size at θ angle, and ordinate represents the size of light echo reflectivity.As we can see from the figure, along with the increase of θ angle, light echo reflectivity reduces.Desirable result is that all light echo reflectivity all equate or approach (what reduce is better more gently).
Can know that according to background knowledge forming the method for light cone has three kinds: (1), make to reflect the face out-of-flatness (being similar to diffuse reflection) (2) of element, by diffraction of light effect.(3), change the geometry of reflective element, make three dihedral angles of reflective element depart from orthogonality relation.In the present invention, obtain desirable light cone effect by the size that changes dihedral angle.As shown in Figure 9, description is the light cone formation schematic diagram of rescinded angle microprism reflectorized material.Incident light is injected reflectorized material along certain direction, after reflectorized material effect, light reflects with the form of diverging light along incident light axis (line of incident light incident direction is incident light axis), and the light of dispersing is like this called reflective taper, and the angle of general light cone is less than 1 degree.This light cone is very necessary in the middle of actual utilization.When the sign board that light is made by reflectorized material from car light directive, then return to car light.Driver's eyes and car light, not in same position, therefore can't see sign board, and after having had this special light cone effect, driver just can be seen sign board.In actual applications, we can not adopt the Counter-reflection membrane material with microprism array structure of standard.Because when the light of a branch of collimation incides behind the surface of Counter-reflection membrane material with microprism array structure of standard, the light reflecting will return along incident direction of light, can't form the reflective taper of one 1 degree left and right, therefore the Counter-reflection membrane with microprism array structure of standard does not have practical value, but its design feature and reflective characteristic are the bases that we study.
From H.D.Eckhardt, during delivering the paper of delivering " optical principle of cube microprism " about paper and the N.E.Rityn of optics " naive model of cube reflector phenomenon " in July, 1971, we know the face of rotary reflective element, and the face that makes it is not orthogonal or orthogonal.Can make like this light being reflected by reflective element be dispersed into the luminous point (distributing) of six different directions centered by the opposite direction of incident light.As Fig. 9, we set up a local coordinate on incident light axis, and Z axis overlaps with incident light axis, and X-axis is parallel with the X-axis of world coordinates, and Y-axis is vertical with X-axis.Then be marked in coordinate returning to the luminous point coming, so just formed the simulation result figure of light cone.As shown in Figure 10 a-10d, description be the simulation result figure of the light cone that obtains after reflecting the incident light of the single reflective element after dihedral angle changes.The numeral that in figure, circumference encloses is described the position of light, and radius of a circle represents the pyramid size of light cone, and the angle of general light cone is less than 1 degree.The incident angle of light of four figure is all identical, and θ is 15 degree,
be 20 degree.The dihedral angle of what Figure 10 a represented is reflective element does not change, and after reflection, Guang Anyuan road is returned, and does not depart from incident light axis; A dihedral angle of what Figure 10 b represented is reflective element has increased 9 points (relatively and the dihedral angle 90 of the reflective element of standard spend), and reflected light departs from incident light axis line and formed two luminous points; What Figure 10 c represented is that two dihedral angles all increase by 9 points, and reflected light departs from incident light axis line and formed four luminous points; What Figure 10 d represented is that three dihedral angles all increase by 9 points, and reflected light departs from incident light axis line and formed six luminous points.The pattern that reflective element reflects the incident light six points of rear formation is known as 6 patterns.Light cone pattern is formed by stacking by a lot of different 6 patterns.
We know, the size of dihedral angle is to be determined by the angle of V-shaped groove, and in other words, the size that changes dihedral angle can realize by the angle that changes V-shaped groove.Along with the variation of V-shaped groove angle, corresponding dihedral angle also can change.If Figure 11 is the amplification effect figure of the single reflective element of Fig. 2 (27).This reflective unit have three dihedral angles, is respectively dihedral angle D1-2, dihedral angle D2-3, dihedral angle D1-3.Because face 21,22,23 is made up of groove 11,12,13 respectively, therefore groove 11,12,13 is determining dihedral angle D1-2, D2-3, D1-3.As shown in Figure 11, dihedral angle D1-2 is made up of groove 12,13, and dihedral angle D2-3 is made up of groove 11,13, and dihedral angle D1-3 is made up of groove 11,12, and wherein every two grooves determine a dihedral angle.
In order to allow the light that reflectorized material reflects form light cone, the profile that obtains a desirable light cone pattern (stacks of 6 patterns of for example above-mentioned all elements) or disperse, allow a class groove repeat with the groove of some, in the repetition period, each gash angle is different from the gash angle closing on, and the size of gash angle becomes equal difference increase or reduce.In a repetitive, the quantity of different gash angles represents with Q, and Q is generally not more than 20.All the other two classes also repeat with identical quantity and identical gash angle.The result that different gash angles repeat is like this that the element on reflectorized material is divided into multiple repetition big units, has comprised a lot of variform reflective elements in each big unit.Wherein have a reflective element criteria of right and wrong at least, this off-gauge reflective element has at least a face to depart from the corresponding surface of the reflective element of standard; Even if the dihedral angle of these reflective elements is not all orthogonal, but still be counted as the reflective element of microprism, because it is similar to the reflective element of desirable microprism in shape and function.
Figure 12 is the back view of the representative rescinded angle microprism reflectorized material reflector layer of the present invention, has the groove of three types in figure, is respectively M, N, O.M1, m2, m3, m4 belong to the groove of M class, and the size of gash angle is all different, the size of gash angle become equal difference increase or reduce, the difference between them with β represent (β angle can for just also can for bear, when be on the occasion of time gash angle equal difference increase, when for negative value, gash angle equal difference reduces.）。For example m1 is the gash angle of standard, and m2 is that standard trench angle adds a β, and m3 is that standard trench angle adds 2 β, and then m4 to be standard trench angle add 3 β repeat taking these four grooves as one-period.The groove of same N, O class also repeats in this manner.The quantity that different gash angles repeat can change with Q.Q=4 here, Q value is larger, and reflective elements different in big unit is more.
Figure 13 is the sectional view of C-C in Figure 12, has used a kind of mode of exaggeration to show the equal difference variation of gash angle.M1, m2 in figure, m3, m4 are consistent with m1, m2, m3, m4 in Fig. 8, and their gash angle is different, and line (18) is groove axis, and dotted line is standard trench angle.The increase of the both sides of groove line equivalent centered by groove axis (18) or reduce gash angle, be less than ± 1 degree of its scope.As figure, m1 is identical with standard trench angle, and m2 is that standard trench angle adds a β, and m3 is that standard trench angle adds 2 β, and m4 to be standard trench angle add 3 β.Then repeat with these four gash angles.
Embodiment mono-
Figure 14 is the further explanatory drawings of the reflective element structure of the representative reflectorized material of the present invention.Each line represents a groove in the drawings, and the letter of side mark is representing corresponding groove, and the angle of the groove of different letters is different.As shown in figure 14, the further explanatory drawings of reflective element structure while being Q=4, M class groove is taking m1, m2, these four kinds of different gash angles of m3, m4 as one-period repetition, N class groove is taking n1, n2, these four kinds of different gash angles of n3, n4 as one-period repetition, and O class is taking O1, O2, these four kinds of different gash angles of O3, O4 as one-period repetition.The result obtaining is as Figure 14, and the black surround in figure represents a big unit, and wherein different arabic numeral mark for different reflective elements, always has 32 different reflective elements.In figure, each triangle represents a reflective element, has in the drawings two kinds of triangles, is respectively right triangle and left triangle, and right triangle is known as positive unit, and left triangle is known as negative unit, and (for example, 1 to 16 is positive unit, and 17 to 32 is negative unit.）。Each reflective unit have three dihedral angles, and the size of these dihedral angles is made up of different grooves.Table 1 is Q=4, the relation of β=6 timesharing gash angle and dihedral angle:
Table 1
Figure 15 a-15c is Q=4, β=6 timesharing, incident angle
in
be that 60 degree are constant, θ gets 0 degree, 15 degree, 30 are spent the light cone pattern diagram obtaining.When θ angle changes as we can see from the figure, the luminous point of the light cone pattern diagram obtaining in light cone angle is 1 degree is very even, and the change of incidence angle θ does not have the large light cone pattern that affects.After reflectorized material reflected light with this structure manufacture, can obtain desirable light cone effect.Figure 16 a-16c is Q=4, β=6 timesharing, incident angle
in θ be that 20 degree are constant,
get 0 degree, 30 degree, 60 spend the light cone pattern diagram obtaining.The change of same incident angle does not have large impact to the light cone pattern obtaining, and still performance is good.
Following table 2 is Q=4, the relation of β=-6 timesharing gash angle and dihedral angle:
Table 2
Work as Q=4, the pattern diagram of the light cone that β=-6 timesharing obtains and Q=4, the light cone pattern diagram that β=6 timesharing obtains is the same, therefore repeated description no longer.
Embodiment bis-
When Figure 17 is Q=3, the further explanatory drawings of reflective element structure.M class groove is taking m1, m2, these three kinds of different gash angles of m3 as one-period repetition, and N class groove is taking n1, n2, these three kinds of different gash angles of n3 as one-period repetition, and O class is taking O1, O2, these three kinds of different gash angles of O3 as one-period repetition.As shown in the figure, a big unit has 18 different reflective elements, and wherein 1 to 9 is positive unit, and 10 to 18 is negative unit.Following table 3 is to describe Q=3, the relation of β=6 timesharing gash angle and dihedral angle:
Table 3
Figure 18 a-18c is Q=3, β=6 timesharing, incident angle
in
be that 60 degree are constant, θ gets 0 degree, 15 degree, 30 are spent the light cone pattern diagram obtaining.Figure 19 a-19c is Q=3, β=6 timesharing, incident angle (θ,
in θ be that 20 degree are constant,
get 0 degree, 30 degree, 60 spend the light cone pattern diagram obtaining.
Q=3 in the present embodiment, result and the Q=3 of β=-6 timesharing light cone pattern diagram, β=6 timesharing light cone pattern diagram comes to the same thing, therefore be no longer repeated in this description.
Embodiment tri-
Following table 4 is Q=4, the relation of β=9 timesharing gash angle and dihedral angle:
Table 4
Figure 20 a-20c is Q=4, β=9 timesharing, incident angle
in
be that 60 degree are constant, θ gets 0 degree, 15 degree, 30 are spent the light cone pattern diagram obtaining.When θ angle changes as we can see from the figure, the luminous point of the light cone pattern diagram obtaining in light cone angle is 1 degree is very even, and the change of incidence angle θ does not have the large light cone pattern that affects.After reflectorized material reflected light with this structure manufacture, can obtain desirable light cone effect.Figure 21 a-21c is Q=4, β=9 timesharing, incident angle
in θ be that 20 degree are constant,
get 0 degree, 30 degree, 60 spend the light cone pattern diagram obtaining.Light cone pattern diagram during with Q=3 relatively can find, when light cone pattern diagram when Q=3 does not have Q=4, light cone pattern diagram is good, and the luminous point of formation is not very even.In practice, just have so flickering visual effect, affect driver and read the information of warning sign.
In same the present embodiment, light cone pattern diagram result and the β=9 timesharing light cone pattern diagram of β=-9 timesharing come to the same thing, therefore be no longer repeated in this description.
Embodiment tetra-
Following table 5 is Q=3, the relation of β=9 timesharing gash angle and dihedral angle:
Table 5
Figure 22 a-22c is Q=3, β=9 timesharing, incident angle
in
be that 60 degree are constant, θ gets 0 degree, 15 degree, 30 are spent the light cone pattern diagram obtaining.Figure 23 a-23c is incident angle
in, when θ is that 20 degree are constant,
get 0 degree, 30 degree, 60 spend the light cone pattern diagram obtaining.
β in the present embodiment=-9 timesharing light cone pattern diagram result and β=9 timesharing light cone pattern diagram come to the same thing, therefore be no longer repeated in this description.
The present invention also has good processability in addition, and than pin the tie in technology of tying up and substrate combination technique, overall process technology is to economize labour and cost most.Only need in the present invention the V-arrangement diamond cutter of Q kind different angles, can be very fast process master mold.In entirety processing, V-arrangement diamond cutter is to move by rectilinear direction, therefore can cut out accurately very little reflective element, and this has ensured the feasibility of project organization.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a structure of improving diamond reflecting film reflective taper, is characterized in that, the structure of described improvement diamond reflecting film reflective taper is made up of the reflective element of prism of serial arrangement; In described improvement diamond reflecting film reflective taper structure, portray by the V-shaped groove of three types and shape row becomes the reflective element of the prism of serial arrangement; In the V-shaped groove of described three types, the V-shaped groove of same type be arranged in parallel; The V-shaped groove of described same type repeats with some and a repetition period of same class V-shaped groove has two different groove angles at least, and in the repetition period of described same class V-shaped groove, the size of groove angle becomes equal difference increase or reduce.
2. the structure of improvement diamond reflecting film reflective taper according to claim 1, is characterized in that, the distance between the V-shaped groove that described same type be arranged in parallel is equal, and its scope is 25 microns to 1000 microns.
3. the structure of improvement diamond reflecting film reflective taper according to claim 1, is characterized in that, the V-shaped groove number with different groove angles of described same class V-shaped groove within a repetition period is not more than 20.
4. the structure of improvement diamond reflecting film reflective taper according to claim 1, is characterized in that, the size variation scope of described groove angle is ± 1 degree.
5. according to the structure of the improvement diamond reflecting film reflective taper described in claim 1 to 5 any one, it is characterized in that, between the V-shaped groove of described three types, be mutually 60 degree angles.
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| CN108089248A (en) * | 2017-12-26 | 2018-05-29 | 福建夜光达科技股份有限公司 | A kind of microprism high-strength reflecting film and its manufacturing method |
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| US4775219A (en) * | 1986-11-21 | 1988-10-04 | Minnesota Mining & Manufacturing Company | Cube-corner retroreflective articles having tailored divergence profiles |
| US20020151155A1 (en) * | 2001-04-13 | 2002-10-17 | Yueh Ching | Reflector wire structure and method for manufacturing the same |
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Denomination of invention: Improving the structure of the reflecting cone of diamond reflective film Effective date of registration: 20210202 Granted publication date: 20141029 Pledgee: Agricultural Bank of China, Limited by Share Ltd, Mianyang, Fucheng branch Pledgor: Sichuan Longhua Film Co.,Ltd. Registration number: Y2021980000918 |