CN104914490B - A kind of even smooth film and its use equipment - Google Patents
A kind of even smooth film and its use equipment Download PDFInfo
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- CN104914490B CN104914490B CN201510397931.4A CN201510397931A CN104914490B CN 104914490 B CN104914490 B CN 104914490B CN 201510397931 A CN201510397931 A CN 201510397931A CN 104914490 B CN104914490 B CN 104914490B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
Abstract
The present invention relates to optical thin film, more particularly to a kind of even smooth film and its equipment is used.In order to solve the hotspot phenomenons of existing even smooth film and accomplish multi dimensional diffusion, the present invention provides a kind of even smooth film and its uses equipment.The even smooth film includes three-decker：Transparent substrate layer, even photosphere and diffusion layer；The side of the transparent substrate layer sets even photosphere, and the opposite side of the transparent substrate layer sets diffusion layer.The even smooth film that the present invention is provided can solve the problem that hotspot phenomenons and accomplish multi dimensional diffusion.The beam angle and light intensity of the light extraction for the even smooth film that the present invention is provided can be adjusted as needed.
Description
Technical field
The present invention relates to optical thin film, more particularly to a kind of even smooth film and its equipment is used.
Background technology
LED has energy consumption low, the advantages of long lifespan, is seen everywhere in living scene.But what is occurred therewith asks
Topic is, first, the light luminance that LED is sent is higher, human eye direct-view can be more dazzling, easily produces fatigue, contacts high for a long time
Intensity light, easy damaged eyesight.Second, plurality of LEDs lamp bead is in a row in use, any two adjacent LED lamp bead center sections
Relatively dark, i.e., the light and dark situation of meeting, that is, hotspot phenomenons.The use of even smooth film can solve the problems, such as hotspot,
It is mainly used in advertising lamp box, bar code information, Vehicular display device, side entering type television set etc..
At present, (the publication date of Chinese patent application 200920319175.3：On September 1st, 2010) to disclose a kind of sphere even
Light film, the even smooth film is composited by materials at two layers is closely connected, and upper strata is irregularly densely covered outwardly transparent hemi layer, respectively
The radius size of transparent hemi differs.Light can be carried out full angle diffusion, the light of most of angle by the spherical light homogenizing member
Can be than milder, but the even smooth film effect is consistent with the effect of diffusion barrier, spot light be by the hot spot after the even smooth film it is circular,
But the angle of uncontrollable light.
(the publication date of Chinese patent application 201210342331.4：On January 16th, 2013) a kind of even smooth film is disclosed, this is even
The side of light film is incidence surface, and opposite side is exiting surface, and incidence surface and/or exiting surface are provided with main structure, main structure and set
Some minor structures are equipped with, even smooth film is reflected to the light that light source is launched by main structure and minor structure, light source is sent
Light is upset and dissipated, and realizes the increase of light source luminescent angle and soft luminous.The even smooth film can be by spot light along its main structure
Orientation diffuse into line source, accomplish one-dimensional diffusion, but diffusion can not be played in the bearing of trend of main structure, be
Wire is distributed, and can only be used as bar size application.
The content of the invention
In order to solve the hotspot phenomenons of existing even smooth film, the present invention provides a kind of even smooth film and its uses equipment.This hair
The even smooth film of bright offer solves hotspot phenomenons, and further accomplishes multi dimensional diffusion.
In order to solve the above-mentioned technical problem, the present invention uses following technical proposals：
The present invention provides a kind of even smooth film, and the even smooth film includes three-decker：Transparent substrate layer, even photosphere and diffusion
Layer；The side of the transparent substrate layer sets even photosphere, and the opposite side of the transparent substrate layer sets diffusion layer.
The transparent substrate layer is the organic or inorganic material with the high grade of transparency.Further, the transparent substrate layer
Material be PET, PC, PMMA, or unorganic glass.The thickness of the transparent substrate layer is 20-400 μm.
Further, the thickness of the transparent substrate layer is 100-400 μm.
Further, in the even smooth film, described even photosphere is made up of some prism elements；Each prism elements
It is in wavy periodicity or irregular height fluctuations along prolonging direction, high part is referred to as crest, and low part is referred to as ripple
Paddy, the crest and trough are alternately present；In same prism elements, the distance between two crests of arbitrary neighborhood L it is identical or
Difference, L scope is 0.001-10mm；In same prism elements, the poor Δ H of arbitrary neighborhood crest and trough height is identical or not
Together, Δ H scope is 1-100 μm；The water of the peak of adjacent circular arc of the adjacent prism elements in same lateral cross section
Flat identical or different apart from P, P scope is 0.1-100 μm.
Or, Δ H scope is 0.001-0.1mm；P scope is 0.0001-0.1mm.
Further, in the even smooth film, the cross section of described prism elements is the face that circular arc chord is surrounded, the length of string
Degree is less than or equal to diameter of a circle where circular arc, and arc radius R is 0.001-1mm.
Further, the cross section of described prism elements is alternatively oval circular arc and the line segment at connection circular arc two ends is surrounded
Face, line segment length is less than or equal to the length of oval major axis, and oval long axis length is 1.1-50 times of minor axis length.
Further, the bottom surface of described strip prism elements is connected with each other, and covers all the upper table of transparent substrate layer
Face.
Further, in the even smooth film, described diffusion layer includes adhesive and diffusion microballon, and the diffusion microballon leads to
Cross the surface that adhesive is bonded in transparent substrate layer；Described diffusion layer includes the adhesive and 0.1-300 weight of 100 parts by weight
The diffusion microballon of part.
Further, described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 1-150 parts by weight.
Further, described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 35-80 parts by weight.
Described adhesive is polyurethane, acrylic resin, and it is sticky that epoxy resin etc. can be solidified by heat cure or UV
One or both of liquid and two or more mixtures, the diffusion microballon are dispersed in adhesive, the diffusion layer
Thickness is 2-100 μm；The particle size range of the diffusion microballon is 1-100 μm, and the material of the diffusion microballon can be organic expansion
Dissipate microballon and/or inorganic diffusion microballon, described organic diffusion microballon, the refractive index of inorganic diffusion microballon between 1.4-2.7,
Described organic diffusion microballon is PMMA, PS, one kind in the transparent circular or oval organic matter such as PBMA or two kinds and
Two or more mixtures, inorganic diffusion microballon can be titanium dioxide, silica, calcium carbonate, calcium sulfate, the nothing such as barium sulfate
One or both of machine thing and two or more mixtures.
Further, in the even smooth film, the crest location of the adjacent prism elements in left and right mutually staggers.
Further, the crest line of described prism elements is cyclic curve, the cycle of the crest line of adjacent prism elements
Differ 1/5-4/5 complete cycle.Further, the crest line of described prism elements is sine curve.
Further, in the even smooth film, L is 0.3-1mm, and Δ H is 1-10 μm, and the radius R of circular arc is 3 μm -10 μm, P
For 1-10 μm.
Or, Δ H scope is 0.001-0.01mm；P scope is 0.001-0.01mm.
Further, in described even smooth film, L is 0.35mm, and Δ H is 5 μm, and the radius R of circular arc is 10 μm, and P is 8 μm.
Further, in the even smooth film, the material of the adhesive is acrylic resin or polyurethane；The diffusion is micro-
The material of pearl is the combination of two kinds of one kind or wherein at least in PS, PMMA, silica and calcium carbonate.
Further, in the even smooth film, described diffusion layer includes the adhesive and 35-80 parts by weight of 100 parts by weight
Diffusion microballon；The particle size range of the diffusion microballon is 1-100 μm.
The present invention also provides a kind of equipment using even smooth film, and the equipment includes spot light or lattice array light source, and institute
The even smooth film stated；The spot light or lattice array light source are placed in the diffusion layer side or even photosphere side of the even smooth film.
The equipment is display, bar code information, car-mounted display equipment, fingerprint recording instrument or illuminator etc..
The present invention also provides a kind of method for preparing described even smooth film, and methods described comprises the steps：
(1) diffusion layer is made：Diffusion microballon is dispersed in adhesive, adhesive layer coating fluid is formed, by what is be well mixed
Adhesive layer coating solution is passing through the one side of the transparent base pre-processed, and by solidifying to form diffusion layer；
(2) even photosphere is made：By ultra-precise laser engraving equipment or ultraprecise numerically controlled processing equipment by the shape of even photosphere
Shape structure fabrication recycles particular mold to transfer structure by way of UV solidifies another to transparent base on particular mold
On simultaneously, complete even photosphere, so as to obtain described even smooth film.
Further, after above-mentioned steps (1) make diffusion layer, it can now detect that transparent substrate layer is formed with diffusion layer
Film mist degree.The mist degree scope for the film that transparent substrate layer is formed with diffusion layer is 1-90%, preferably 10-60%.
Compared with prior art, the even smooth film tool that the present invention is provided has the advantage that：1st, by the design of even photosphere, even light
Film can reach the shooting angle for upsetting light, and softening light source simultaneously makes equalizing light rays, good to solve hotspot phenomenons.2nd, pass through
The design of diffusion layer is set, and further softening light source improves diffusion effect.3rd, can be by spot light by the design of even photosphere structure
Diffusion turns into one-dimensional line source, can also be shown as the rectangle or elliptical spot of two dimension, that is, accomplish multi dimensional diffusion.The present invention is carried
The beam angle and light intensity of the even smooth film supplied can be adjusted as needed.The equipment of even smooth film, light extraction described in the use that the present invention is provided
Face is not in the irregular phenomenon of light and shade.The preparation method for the even smooth film that the present invention is provided, technique is simple, it is easy to operate.
Brief description of the drawings
A kind of dimensional structure diagram for even smooth film that Fig. 1 provides for the present invention；
A kind of side structure schematic view for even smooth film that Fig. 2 provides for the present invention；
The lateral cross section structural representation for another even smooth film that Fig. 3 provides for the present invention；
Fig. 4 is that spot light penetrates the design sketch after existing even smooth film；
Fig. 5 is that spot light penetrates the design sketch after existing diffusion barrier；
Fig. 6 penetrates the design sketch for the even smooth film that the present invention is provided for spot light.
Embodiment
For the functional character and advantage that are more readily understood the structure of the present invention and can reach, hereafter by the preferable of the present invention
Embodiment, and coordinate schema to be described below in detail：
As shown in figure 1, the present invention provides a kind of even smooth film, the even smooth film includes three-decker：It is transparent substrate layer 12, even
Photosphere 11 and diffusion layer 13；The side of the transparent substrate layer 12 sets even photosphere 11, and the opposite side of the transparent substrate layer is set
Put diffusion layer 13.
As shown in Fig. 2 the present invention provides a kind of even smooth film, the even smooth film includes three-decker：It is transparent substrate layer 22, even
Photosphere 21 and diffusion layer 23；The side of the transparent substrate layer 22 sets even photosphere 21, the opposite side of the transparent substrate layer 22
Diffusion layer 23 is set.
As shown in figure 3, the present invention provides a kind of even smooth film, the even smooth film includes three-decker：It is transparent substrate layer 32, even
Photosphere 31 and diffusion layer 33；The side of the transparent substrate layer 32 sets even photosphere 31, the opposite side of the transparent substrate layer 32
Diffusion layer 33 is set.
As shown in Figure 1 to Figure 3, described even photosphere is made up of some prism elements；Each prism elements edge elongation
Direction is in wavy periodicity height fluctuations, and high part is referred to as crest, and low part is referred to as trough, and crest and trough are handed over
For appearance；As shown in Fig. 2 the distance between two crests of arbitrary neighborhood L is identical or different, L scope is 0.001-10mm；Appoint
Adjacent peaks of anticipating and the poor Δ H of trough height are identical or different, and Δ H scope is 1-100 μm；As shown in figure 1, adjacent prism list
The horizontal range P of the peak of adjacent circular arc of the member in same lateral cross section is identical or different, and P scope is 0.1-100 μ
m。
As shown in figure 1, the cross section of described prism elements is the face that circular arc chord is surrounded, the length of string is less than or equal to
Diameter of a circle where circular arc, arc radius R is 0.001-1mm.The cross section of described prism elements be alternatively oval circular arc and
The face of the line segment composition at circular arc two ends is connected, line segment length is less than or equal to the length of oval major axis, oval long axis length
It is 1.1-50 times of minor axis length.
As shown in Figure 1, Figure 2 and Figure 3, described diffusion layer includes adhesive and diffusion microballon, and the diffusion microballon passes through
Adhesive is bonded in the surface of transparent substrate layer.
As shown in figure 4, existing even smooth film only has even light action, the light that a spot light is sent passes through existing even light
One-dimensional light is formed after film, but remitted its fury is a lot, and can only be used to single-row LED bar graph lamp.
As shown in figure 5, existing diffusion barrier only has light diffusion, the light that a spot light is sent expands through existing
Dissipate and a circular light spot is formed after film, it is impossible to form the exiting surface of one-dimensional light or two dimension.
As shown in fig. 6, the even smooth film that provides of the present invention is while have light diffusion and even light action, what a spot light was sent
One-dimensional light is formed after the even smooth film that light is provided through the present invention, the exiting surface of two dimension, also, luminous intensity are formd in other words
Relatively strong, brightness is higher.Available for array lamp bead lighting apparatus.
The main performance for the even smooth film that the present invention is provided, is detected by following detection methods：
1st, beam angle:Refer to luminous intensity and be equal to the angle that the direction of 1/2nd peak light intensities is contained, with GO-2000 points
Cloth photometer (production of Hangzhou distant place Photoelectric Co., Ltd.) is tested.
2nd, light intensity：Even smooth film group is put into before light fixture, with GO-2000 distribution photometers test center light intensity.
Embodiment 1
The present invention provides a kind of even smooth film, and the even smooth film includes three-decker：Transparent substrate layer, even photosphere and diffusion
Layer；The side of the transparent substrate layer sets even photosphere, and the opposite side of the transparent substrate layer sets diffusion layer.
The thickness of the transparent substrate layer is 250 μm, and the material of the transparent substrate layer is PET (poly terephthalic acid second
Diol ester).
Described even photosphere is made up of some strip prism elements, and the bottom surface of described strip prism elements is connected with each other,
The upper surface of transparent base is covered all, the cross section of described prism elements connects for circular arc with string to be formed, every prism
Unit is in wavy periodicity height fluctuations along prolonging direction, forms crest and trough, crest is alternately arranged with trough, phase
The difference in height Δ H at adjacent wave peak and trough.The distance between the two neighboring crest of same prism elements L, the radius R of circular arc,
The horizontal range P of the peak of adjacent circular arc of the adjacent prism elements in same lateral cross section, referring to the number in table 1
According to.
The crest line of described prism elements is cyclic curve, and the cycle of the crest line of adjacent prism elements differs 1/5
Complete cycle.
Described diffusion layer contains adhesive and diffusion microballon, and the diffusion microballon is dispersed in adhesive, described expansion
Dissipating layer includes the adhesive of 100 parts by weight and the diffusion microballon of 80 parts by weight, and the thickness of the diffusion layer is 30 μm；The diffusion
The particle size range of microballon is 3-30 μm, and the material of the diffusion microballon is PMMA, and the material of the adhesive is acrylic resin.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 2
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 100 μm, the transparent substrate layer
Material be PC (makrolon).Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 40 parts by weight, institute
The thickness for stating diffusion layer is 28 μm；The particle size range of the diffusion microballon is 5-25 μm, and the material of the diffusion microballon is PMMA,
The material of the adhesive is epoxy resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, and the cycle of the crest line of adjacent prism elements differs 4/5
Complete cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 3
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 150 μm, the transparent substrate layer
Material be PET (polyethylene terephthalate).Described diffusion layer includes the adhesive and 60 parts by weight of 100 parts by weight
Diffusion microballon, the thickness of the diffusion layer is 22 μm；The particle size range of the diffusion microballon is 5-20 μm, the diffusion microballon
Material be PBMA, the material of the adhesive is polyurethane resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, and the cycle of the crest line of adjacent prism elements differs 2/5
Complete cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 4
The present invention provides a kind of even smooth film, and the even smooth film includes three-decker：Transparent substrate layer, even photosphere and diffusion
Layer；The side of the transparent substrate layer sets even photosphere, and the opposite side of the transparent substrate layer sets diffusion layer.
The thickness of the transparent substrate layer is 188 μm, and the material of the transparent substrate layer is PET (poly terephthalic acid second
Diol ester).Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 50 parts by weight, the thickness of the diffusion layer
Spend for 27 μm；The particle size range of the diffusion microballon is 3-25 μm, and the material of the diffusion microballon is PBMA, the adhesive
Material is acrylic resin.
In the even photosphere, the cross section of described prism unit is made up of oval circular arc with being connected the line segment at two ends,
The oval long axis length is 2 times of minor axis length, and the oval minor axis length is R, same prism elements it is adjacent
The difference in height Δ H of the distance between two crests L, adjacent peaks and trough, adjacent prism elements are in same lateral cross section
Adjacent circular arc peak horizontal range P, referring to the data in table 1.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 5
The even smooth film that the present invention is provided, wherein, the thickness of the transparent substrate layer is 100 μm, the transparent substrate layer
Material is PC (makrolon).Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 70 parts by weight, described
The thickness of diffusion layer is 30 μm；The particle size range of the diffusion microballon is 2-30 μm, and the material of the diffusion microballon is PS (polyphenyl
Ethene), the material of the adhesive is acrylic resin.
In the even photosphere, the cross section of described prism unit is made up of oval circular arc with being connected the line segment at two ends,
The oval long axis length in place is 3 times of minor axis length, and the oval minor axis length is R, same prism elements it is adjacent
The difference in height Δ H of the distance between two crests L, adjacent peaks and trough, adjacent prism elements are in same lateral cross section
Adjacent circular arc peak horizontal range P, referring to the data in table 1.The testing result of the above-mentioned even smooth film such as institute of table 2
Show.
Embodiment 6
The even smooth film that the present invention is provided, wherein, the thickness of the transparent substrate layer is 100 μm, the transparent substrate layer
Material is PC (makrolon).Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 85 parts by weight, described
The thickness of diffusion layer is 30 μm；The particle size range of the diffusion microballon is 2-30 μm, and the material of the diffusion microballon is PS (polyphenyl
Ethene), the material of the adhesive is acrylic resin.
In the even photosphere, the cross section of described prism unit is made up of oval circular arc with being connected the line segment at two ends,
The oval long axis length in place is 2.5 times of minor axis length, and the oval minor axis length is R, the phase of same prism elements
The difference in height Δ H of the distance between adjacent two crests L, adjacent peaks and trough, adjacent prism elements are in same lateral cross section
On adjacent circular arc peak horizontal range P, referring to the data in table 1.
The crest line of described prism elements is erratic curve, and distance of its feature between adjacent peaks is irregular change
Change, crest irregular change same with the difference in height of trough, and adjacent prism elements are adjacent in same lateral cross section
The horizontal range of peak of circular arc be to change in the range of, the crest line of two prism units of arbitrary neighborhood differs.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 7
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 20 μm, the transparent substrate layer
Material be PMMA.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 65 parts by weight, the diffusion layer
Thickness be 100 μm；The diffusion microballon includes organic diffusion microballon and inorganic diffusion microballon, the grain of organic diffusion microballon
Footpath is 50-100 μm, and material is PBMA, and the particle diameter of the inorganic diffusion microballon is 1-50 μm, and material is titanium dioxide, described
The weight ratio of PBMA and titanium dioxide is 1:1.The material of the adhesive is polyurethane.
In the even photosphere, the cross section of described prism unit is made up of oval circular arc with being connected the line segment at two ends,
The oval long axis length is 1.1 times of minor axis length, and the oval minor axis length is R, the phase of same prism elements
The difference in height Δ H of the distance between adjacent two crests L, adjacent peaks and trough, adjacent prism elements are in same lateral cross section
On adjacent circular arc peak horizontal range P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, the cycle difference two of the crest line of adjacent prism elements/
A cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 8
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 400 μm, the transparent substrate layer
Material be PET.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 15 parts by weight, the diffusion layer
Thickness be 2 μm；The particle size range of the diffusion microballon is 1-2 μm, and the material of the diffusion microballon is silica, the glue
The material of glutinous agent is epoxy resin.
In the even photosphere, the cross section of described prism unit is made up of oval circular arc with being connected the line segment at two ends,
The oval long axis length is 50 times of minor axis length, and the oval minor axis length is R, same prism elements it is adjacent
The difference in height Δ H of the distance between two crests L, adjacent peaks and trough, adjacent prism elements are in same lateral cross section
Adjacent circular arc peak horizontal range P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, the cycle difference two of the crest line of adjacent prism elements/
A cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 9
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 100 μm, the transparent substrate layer
Material be unorganic glass.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 1 parts by weight, the expansion
The thickness for dissipating layer is 2-30 μm；The particle size range of the diffusion microballon is 1-30 μm, and the material of the diffusion microballon is PMMA, institute
The material for stating adhesive is epoxy resin.
In the even photosphere, the cross section of described prism unit is made up of oval circular arc with being connected the line segment at two ends,
The oval long axis length is 25 times of minor axis length, and the oval minor axis length is R, same prism elements it is adjacent
The difference in height Δ H of the distance between two crests L, adjacent peaks and trough, adjacent prism elements are in same lateral cross section
Adjacent circular arc peak horizontal range P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, the cycle difference two of the crest line of adjacent prism elements/
A cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 10
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 300 μm, the transparent substrate layer
Material be PET.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 55 parts by weight, the diffusion layer
Thickness be 80-100 μm；It is described diffusion microballon particle size range be 80-100 μm, it is described diffusion microballon material be PMMA and
PS, PMMA and PS weight ratio are 1:1.The material of the adhesive is polyurethane.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, the cycle difference two of the crest line of adjacent prism elements/
A cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 11
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 400 μm, the transparent substrate layer
Material be PC.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 65 parts by weight, the diffusion layer
Thickness is 2-30 μm；The particle size range of the diffusion microballon is 1-30 μm, and the material of the diffusion microballon is silica and carbon
The weight ratio of the mixture of sour calcium, silica and calcium carbonate is 1:1, the material of the adhesive is acrylic resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, the cycle difference two of the crest line of adjacent prism elements/
A cycle.
The testing result of above-mentioned even smooth film is as shown in table 2.
Embodiment 12
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 200 μm, the transparent substrate layer
Material be PET.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 35 parts by weight, the diffusion layer
Thickness be 2-30 μm；The particle size range of the diffusion microballon is 1-20 μm, and the material of the diffusion microballon is PMMA, the glue
The material of glutinous agent is acrylic resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
The crest line of described prism elements is cyclic curve, the cycle difference two of the crest line of adjacent prism elements/
A cycle.
Embodiment 13
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 200 μm, the transparent substrate layer
Material be PET.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 0.1 parts by weight, the diffusion layer
Thickness be 2-30 μm；The particle size range of the diffusion microballon is 1-20 μm, and the material of the diffusion microballon is PMMA, the glue
The material of glutinous agent is acrylic resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
Embodiment 14
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 200 μm, the transparent substrate layer
Material be PET.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 300 parts by weight, the diffusion layer
Thickness be 2-30 μm；The particle size range of the diffusion microballon is 1-20 μm, and the material of the diffusion microballon is PMMA, the glue
The material of glutinous agent is acrylic resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
Embodiment 15
The even smooth film that such as embodiment 1 is provided, wherein, the thickness of the transparent substrate layer is 200 μm, the transparent substrate layer
Material be PET.Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 150 parts by weight, the diffusion layer
Thickness be 2-30 μm；The particle size range of the diffusion microballon is 1-20 μm, and the material of the diffusion microballon is PMMA, the glue
The material of glutinous agent is acrylic resin.
In the even photosphere, the distance between two neighboring crest of same prism elements L, adjacent peaks and trough
Difference in height Δ H, the radius R of circular arc, the water of the peak of the adjacent circular arc of adjacent prism elements in same lateral cross section
Put down apart from P, referring to the data in table 1.
The testing result of above-mentioned even smooth film is as shown in table 2.
The structural parameters of even photosphere in the embodiment that the present invention of table 1 is provided
| Project | L/mm | ΔH/mm | R/mm | P/mm |
| Embodiment 1 | 0.35 | 0.005 | 0.01 | 0.008 |
| Embodiment 2 | 0.98 | 0.008 | 0.1 | 0.02 |
| Embodiment 3 | 2.00 | 0.007 | 0.2 | 0.03 |
| Embodiment 4 | 0.05 | 0.001 | 0.001 | 0.001 |
| Embodiment 5 | 0.3 | 0.005 | 0.003 | 0.001 |
| Embodiment 6 | 0.7 | 0.006 | 0.01 | 0.01 |
| Embodiment 7 | 1.0 | 0.007 | 1 | 0.05 |
| Embodiment 8 | 3.0 | 0.008 | 0.05 | 0.001 |
| Embodiment 9 | 5.0 | 0.01 | 0.02 | 0.01 |
| Embodiment 10 | 0.3 | 0.001 | 0.003 | 0.001 |
| Embodiment 11 | 0.6 | 0.005 | 0.006 | 0.005 |
| Embodiment 12 | 1.0 | 0.01 | 0.01 | 0.01 |
| Embodiment 13 | 0.001 | 0.1 | 0.001 | 0.0001 |
| Embodiment 14 | 10 | 0.001 | 1 | 0.1 |
| Embodiment 15 | 5 | 0.05 | 0.5 | 0.05 |
The performance test results of the even smooth film provided in an embodiment of the present invention of table 2
| Project | Beam angle (degree) | Light intensity (%) |
| Embodiment 1 | 120.5 | 100 |
| Embodiment 2 | 110.4 | 95.2 |
| Embodiment 3 | 134.6 | 80.8 |
| Embodiment 4 | 115.1 | 96.1 |
| Embodiment 5 | 123.8 | 91.4 |
| Embodiment 6 | 146.3 | 75.5 |
| Embodiment 7 | 129.2 | 88.7 |
| Embodiment 8 | 143.6 | 76.2 |
| Embodiment 9 | 149.5 | 74.4 |
| Embodiment 10 | 121.3 | 92.0 |
| Embodiment 11 | 125.6 | 91.3 |
| Embodiment 12 | 127.2 | 90.7 |
| Embodiment 13 | 152.7 | 74.8 |
| Embodiment 14 | 103.1 | 102.1 |
| Embodiment 15 | 105.6 | 101.6 |
It can be drawn by the test result of above-described embodiment, the even smooth film that the present invention is provided has preferably diffusion and softening
The effect of light source, the orientation and focusing effect to light source is good.Particularly, the even smooth film that the embodiment of the present invention 1,5,10-12 are provided
With more preferable diffusion and even light effect, beam angle has exceeded 120 degree, and light intensity has exceeded 90%.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is every
In the equivalent changes and modifications done according to present invention, the scope of the claims for being encompassed by the present invention.
Claims (6)
1. a kind of even smooth film, it is characterised in that the even smooth film includes three-decker：Transparent substrate layer, even photosphere and diffusion
Layer；The side of the transparent substrate layer sets even photosphere, and the opposite side of the transparent substrate layer sets diffusion layer；Described even light
Layer is made up of some prism elements；Each prism elements rise and fall along prolonging direction in wavy periodicity or irregular height
Change, high part is referred to as crest, and low part is referred to as trough, and the crest and trough are alternately present；
In same prism elements, the distance between two crests of arbitrary neighborhood L is identical or different；In same prism elements,
Arbitrary neighborhood crest and the poor Δ H of trough height are identical or different；Adjacent prism elements are adjacent in same lateral cross section
The horizontal range P of the peak of circular arc is identical or different；
L is 0.3-1mm, and Δ H is 1-10 μm, and the radius R of circular arc is 3 μm -10 μm, and P is 1-10 μm；
Described diffusion layer includes the adhesive of 100 parts by weight and the diffusion microballon of 35-80 parts by weight；The grain of the diffusion microballon
Footpath scope is 1-100 μm.
2. even smooth film according to claim 1, it is characterised in that the cross section of described prism elements is that circular arc chord encloses
Into face, the length of string is less than or equal to diameter of a circle where circular arc, and arc radius R is 0.001-1mm；Or, described rib
The cross section of pole unit is oval circular arc and connects the face that the line segment at circular arc two ends is surrounded, and line segment length is less than or equal to oval
The length of major axis, oval long axis length is 1.1-50 times of minor axis length.
3. even smooth film according to claim 1, it is characterised in that the crest location of the adjacent prism elements in left and right is mutually wrong
Open.
4. even smooth film according to claim 1, it is characterised in that the material of the adhesive is acrylic resin or poly- ammonia
Ester；The material of the diffusion microballon is the combination of two kinds of one kind or wherein at least in PS, PMMA, silica and calcium carbonate.
5. a kind of equipment using even smooth film, it is characterised in that the equipment includes spot light or lattice array light source, and right will
Seek the even smooth film described in one of 1-4；The spot light or lattice array light source are placed in the diffusion layer side of the even smooth film or even light
Layer side.
6. a kind of method of the even smooth film prepared described in one of claim 1-4, it is characterised in that methods described includes following steps
Suddenly：
(1) diffusion layer is made：Diffusion microballon is dispersed in adhesive, adhesive layer coating fluid is formed, by well mixed gluing
Layer coating solution is passing through the one side of the transparent base pre-processed, and by solidifying to form diffusion layer；
(2) even photosphere is made：By ultra-precise laser engraving equipment or ultraprecise numerically controlled processing equipment by the shape knot of even photosphere
Structure is produced on particular mold, recycles particular mold to transfer structure by way of UV solidifies to the another side of transparent base
On, complete even photosphere, so as to obtain described even smooth film.
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| CN106443869A (en) * | 2016-12-09 | 2017-02-22 | 四川云盾光电科技有限公司 | Light equalizing plate based on micro-nano structure |
| CN108254818B (en) * | 2016-12-28 | 2021-05-25 | 惠和株式会社 | Optical sheet for liquid crystal display device and backlight unit for liquid crystal display device |
| CN109586026B (en) * | 2018-11-28 | 2022-01-25 | 维沃移动通信有限公司 | Terminal device |
| CN109827148B (en) * | 2019-04-16 | 2024-04-12 | 凯鑫森(上海)功能性薄膜产业股份有限公司 | Uniform light film for LED illumination and lamp module thereof |
| CN114089453B (en) * | 2021-12-31 | 2023-09-01 | 凯鑫森(上海)功能性薄膜产业股份有限公司 | Preparation method of anti-interference scratch-proof laminating film, laminating film and screen |
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| CN100555004C (en) * | 2006-09-28 | 2009-10-28 | 财团法人工业技术研究院 | The formation method of optical pervasion module and optical scattering structure |
| KR100993383B1 (en) * | 2007-03-15 | 2010-11-09 | 제일모직주식회사 | Diffuser prism sheet comprising light diffuser in the valley of prism and LCD back light unit thereby |
| CN101625427A (en) * | 2008-07-10 | 2010-01-13 | 颖台科技股份有限公司 | Diffusion plate with two-dimensional structure and high diffusivity |
| JP6021292B2 (en) * | 2009-10-02 | 2016-11-09 | 恵和株式会社 | Edge light type backlight unit |
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| US9341755B2 (en) * | 2012-08-22 | 2016-05-17 | Ubright Optronics Corporation | Optical film |
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