CN108916822A - A kind of Film Optics lens, design method and lighting device with micro-structure - Google Patents
A kind of Film Optics lens, design method and lighting device with micro-structure Download PDFInfo
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- CN108916822A CN108916822A CN201810745509.7A CN201810745509A CN108916822A CN 108916822 A CN108916822 A CN 108916822A CN 201810745509 A CN201810745509 A CN 201810745509A CN 108916822 A CN108916822 A CN 108916822A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
- F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
A kind of Film Optics lens with micro-structure, including：At least one lens unit, lens unit include incidence surface and light-emitting surface, and incidence surface is provided with：Keep first micro-structure, the second micro-structure by the refraction control light direction of propagation and the third micro-structure by the total reflection control light direction of propagation in light raw propagation direction；The route of transmission and the direction of propagation that lens unit passes through the first micro-structure, the second micro-structure and third microstructure testing incident light.After the Film Optics lens are applied to LED light device, the light energy that issues to LED is realized in the sub-distribution again in space, to meet the requirements that various illuminations are applied；In addition, the Film Optics lens are very thin, and its shape can be sheared accordingly according to the Structural assignments of practical lamps and lanterns, the application of the Film Optics lens can make the more slim beauty of the moulding of LED lamp, keep the weight of LED lamp lighter, it is also beneficial to make various special-shaped lamps and lanterns, achievees the purpose that lamps and lanterns cost is greatly lowered with this.
Description
Technical field
The present invention relates to lighting technical fields, and in particular to a kind of Film Optics lens with micro-structure, design method
And lighting device.
Background technique
Overall application is in lighting area by feat of many advantages for LED light source, and wherein the secondary light-distribution of optical lens rises
To key effect, the light that LED luminescence chip issues can be rolled over after being transmitted through secondary lens according to the curvature on secondary lens surface
It penetrates or is totally reflected, due to the difference of the optical index of different colours (frequency), will affect the uniformity of hot spot, and LED shines
The light that chip issues is incident on diffuser plate by single layer secondary lens is easier to be formed " macula lutea " phenomenon.
Therefore, it is the needs for meeting illumination application, usually can all uses secondary optics to the light of the LED all angles issued
Controlled, and to realize the application needs of Uniform Illumination or directional lighting, these secondary optics are usually LED lens, instead
Light cup or both uses simultaneously.Although these secondary optics elements can carry out light route of transmission and direction good
Control, but also face problems.Such as：It is at high cost；It is long to design the process and development time；Secondary optics element size is bigger than normal, from
And cause lamps and lanterns size also bigger than normal.Vehicles Collected from Market needs cost performance height；Slim, the expansible modularity design of moulding.Obviously existing
Capable secondary optics are not well positioned to meet the requirement of illumination market development trend.
Summary of the invention
In not additional lamps and lanterns thickness, lamps and lanterns weight and in the case where increase lamps and lanterns size, the propagation way how to shine to LED
Diameter and the direction of propagation are controlled, and the application provides a kind of Film Optics lens with micro-structure, design method and illumination dress
It sets.
According in a first aspect, provide a kind of Film Optics lens with micro-structure in a kind of embodiment, including：At least one
A lens unit, lens unit include incidence surface and light-emitting surface, and incidence surface is provided with：Keep the first of light raw propagation direction
Micro-structure, the second micro-structure by the refraction control light direction of propagation and the third by the total reflection control light direction of propagation
Micro-structure；
Lens unit passes through the first micro-structure, the route of transmission of the second micro-structure and third microstructure testing incident light and biography
Broadcast direction.
In a kind of embodiment, the first micro-structure is to control light to press the planar structure that raw propagation direction is propagated, and second is micro-
Structure is that the refraction tooth group that light refraction is propagated is controlled by toothing, and third micro-structure is to control light by toothing to be all-trans
Penetrate the total reflection tooth group of propagation.
In a kind of embodiment, the spacing between each adjacent refraction tooth of refraction tooth group is greater than each phase of total reflection tooth group
Spacing between neighbour's total reflection tooth.
In a kind of embodiment, being totally reflected every two adjacent total reflection teeth in tooth group is one group, and, every group of total reflection tooth control
The emergent ray of system intersects.
In a kind of embodiment, the emergent ray of refraction tooth group control intersects with the emergent ray that total reflection tooth group controls.
In a kind of embodiment, the tooth height of each refraction tooth in the second micro-structure is identical, tooth angle degree slope is different.
In a kind of embodiment, the tooth height of each total reflection tooth in third micro-structure is identical, tooth angle degree slope not
Together.
In a kind of embodiment, the second micro-structure is identical with the tooth height in third micro-structure.
In a kind of embodiment, the first micro-structure is circle, and the second micro-structure is annular refractive tooth group, and third micro-structure is ring
Shape is totally reflected tooth group.
In a kind of embodiment, the first micro-structure, the second micro-structure and third micro-structure are concentric, and the first micro-structure,
Two micro-structures and third micro-structure are successively arranged from inside to outside.
In a kind of embodiment, the first micro-structure, the second micro-structure and third micro-structure are concentric, and the first micro-structure,
Three micro-structures and the second micro-structure are successively arranged from inside to outside.
In a kind of embodiment, the first micro-structure is strip, and the second micro-structure is that bar shaped reflects tooth group, and third micro-structure is
Bar shaped is totally reflected tooth group.
In a kind of embodiment, the second micro-structure and third micro-structure are symmetrically arranged in the two sides of the first micro-structure, and,
Second micro-structure is between the first micro-structure and third micro-structure.
In a kind of embodiment, the second micro-structure and third micro-structure are symmetrically arranged in the two sides of the first micro-structure, and,
Third micro-structure is between the first micro-structure and the second micro-structure.
It further include the diffusion part for being diffused to emergent ray, diffusion part is set to lens list in a kind of embodiment
The light-emitting surface of member.
In a kind of embodiment, diffusion part is micron-sized lens display.
In a kind of embodiment, the quantity of lens unit be it is multiple, multiple lens units are according to preset image, text or rail
Mark splicing arrangement.
In a kind of embodiment, the shape of lens unit is regular shape or irregular shape.
In a kind of embodiment, lens unit with a thickness of 0.001mm-0.5mm.
In a kind of embodiment, the material of lens unit is the optical plastic of lens.
According to second aspect, a kind of design method of Film Optics lens with micro-structure is provided in this kind of embodiment,
The material of Film Optics lens is optical plastic, and setting keeps the of light raw propagation direction on the incidence surface of optical plastic
One micro-structure, setting control the second micro-structure of the light direction of propagation by refraction and pass through the total reflection control light direction of propagation
Third micro-structure, the specific design procedure of first micro-structure, the second micro-structure and third micro-structure includes：
The first micro-structure is designed on the optical plastic according to the angle with light distribution of design object；
Brewster angle is calculated according to the refractive index of optical plastic；
On the optical plastic, the second micro-structure is designed into the region that angle of incidence of light is less than the Brewster angle；
On the optical plastic, the micro- knot of third is designed into the region that angle of incidence of light is more than or equal to the Brewster angle
Structure.
In a kind of embodiment, first micro-structure is to control light to press the planar structure that raw propagation direction is propagated, institute
Stating the second micro-structure is that the refraction tooth group that light refraction is propagated is controlled by toothing, and the third micro-structure is to pass through toothing
Control the total reflection tooth group that light total reflection is propagated.
In a kind of embodiment, during designing third micro-structure, total reflection tooth group is designed as：Every two adjacent are all-trans
Penetrating tooth is one group, the emergent ray intersection of every group of total reflection tooth control.
In a kind of embodiment, further include the steps that the light-emitting surface design in optical plastic has the diffusion part of micro-structure, institute
Diffusion part is stated for being diffused to emergent ray.
According to the third aspect, a kind of lighting device, including LED light group are provided in a kind of embodiment, further includes above-mentioned tool
There are the Film Optics lens of micro-structure, the incidence surface of Film Optics lens is covered in LED light group, so that Film Optics lens are logical
The first micro-structure, the second micro-structure and third micro-structure is crossed to control the luminous route of transmission of LED light group and the direction of propagation.
In a kind of embodiment, Film Optics lens are made of multiple lens units splicings, and single lens unit is corresponding
Cover at least one LED illuminator.
In a kind of embodiment, Film Optics lens are only single lens unit, and lens unit covers LED light group.
According to above-described embodiment Film Optics lens, due to by micron-sized first micro-structure, the second micro-structure and
Third micro-structure accurately controls the route of transmission of all angles of incident light and the direction of propagation, when the Film Optics lens
After being applied to LED light device, the Film Optics lens realize light energy that LED is issued in the sub-distribution again in space, thus
Meet the requirement of various illumination applications；In addition, the Film Optics lens are very thin, thickness can reach the thickness of 0.03mm, and
Its shape can be sheared accordingly according to the Structural assignments of practical lamps and lanterns, and therefore, the application of the Film Optics lens can make
The more slim beauty of the moulding of LED lamp, keeps the weight of LED lamp lighter, is also beneficial to make various special-shaped lamps and lanterns, be reached with this
To the purpose that lamps and lanterns cost is greatly lowered, this slim Film Optics lens just can solve current illumination market and pursue fibre
The problem of thin, handsome in appearance and personalized lamps and lanterns.
Detailed description of the invention
Fig. 1 is the partial enlarged view of lens unit；
Fig. 2 is the side view of lens unit；
Fig. 3 is the first microstructure design schematic diagram；
Fig. 4 is the second microstructure design schematic diagram；
Fig. 5 is third microstructure design schematic diagram；
Fig. 6 is the second micro-structure optical path partial enlargement diagram；
Fig. 7 is third micro-structure optical path partial enlargement diagram；
Fig. 8 is third microstructure testing incident light propagation schematic diagram；
Fig. 9 is the partial enlargement diagram of third micro-structure emergent ray intersection；
Figure 10 is that Film Optics lens control incident light propagation schematic diagram；
Figure 11 is that Film Optics lens match optical analog schematic diagram when accidentally assembling；
Figure 12 is that another miss of Film Optics lens matches optical analog schematic diagram when assembling；
Figure 13 is that Film Optics lens are revolution structural schematic diagram；
Figure 14 is that Film Optics lens are strip structure schematic diagram；
Figure 15 is that three lens units splice schematic diagram；
Figure 16 is that four lens units splice schematic diagram；
Figure 17 is that six lens units splice schematic diagram；
Figure 18 is that more lens units splice schematic diagram；
Figure 19 is that more lens units splice schematic diagram；
Figure 20 is the illumination effect figure of Figure 19；
Figure 21 is that more lens units splice schematic diagram；
Figure 22 is the illumination effect figure of Figure 21；
Figure 23-Figure 27 is respectively Film Optics lens difference splicing schematic shapes；
Figure 28 is the Film Optics lens schematic diagram of double micro-structures；
Figure 29 is the Film Optics lens illumination effect figure of double micro-structures.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.
In embodiments of the present invention, by designing the Film Optics lens of micro-structure, by micro-structure to the biography of incident light
It broadcasts approach and the direction of propagation is controlled, so that it is uniform by the light that Film Optics lens issue, solve hot spot color difference and light
The problems such as spot is uneven.
Embodiment one：
This example provides the Film Optics lens with micro-structure, including at least one lens unit 1, lens unit 1 include
Incidence surface and light-emitting surface, in order to control the route of transmission and the direction of propagation of incident light, this example carries out the incidence surface of lens unit 1
Microstructure design, specifically, incidence surface is provided with：It keeps first micro-structure 11 in light raw propagation direction, pass through refraction
Control the second micro-structure 12 of the light direction of propagation and the third micro-structure 13 by the total reflection control light direction of propagation.
Since the first micro-structure 11 keeps light raw propagation direction, that is to say, the first micro-structure 11 is not to incident light
Route of transmission and the direction of propagation are changed, according to incident light shine section in each incident light light emitting angle distribution,
Since the light intensity of the center in the luminous section of incident light is most strong, the light intensity of the emergent light of position is also corresponding most strong, and
The light emitting angle of incident light is gradually expanded outward by center, and therefore, first micro-structure 11 of this example shines positioned at incident light
The center in section, and the second micro-structure 12 and third micro-structure 13 are arranged in the outer of the first micro-structure 11 according to the actual situation
Side so that the route of transmission of the incident light of the second micro-structure 12 and third micro-structure 13 to luminous section in addition to center and
The direction of propagation is controlled, finally, micro- by the first micro-structure 11, second when incident light being made to pass through the incidence surface of lens unit 1
Structure 12 and third micro-structure 13 change the route of transmission and the direction of propagation of incident light, so that the light-emitting surface of lens unit 1 can be sent out
Uniformly mixed light out, thus, the light for reaching the sending of lens unit 1 has hot spot no color differnece and the uniform effect of hot spot.
It should be noted that the material of the lens unit 1 of this example is the optical plastic of lens, thickness range is
0.001mm-0.5mm that is to say, the lens unit 1 of this example can do very thin, e.g., can accomplish with a thickness of 0.003mm's
Lens unit.
Embodiment two：
Based on embodiment one, design and row of this example to the first micro-structure 11, the second micro-structure 12 and third micro-structure 13
Cloth is described in detail.
A kind of structure chart of lens unit 1 is as depicted in figs. 1 and 2, and the first micro-structure 11 is that control light presses raw propagation
The planar structure that direction is propagated, the second micro-structure 12 are to control the refraction tooth group 121 that light refraction is propagated, third by toothing
Micro-structure 13 be pass through toothing control light total reflection propagate total reflection tooth group 131, wherein the first micro-structure 11 be located at into
The center in the luminous section of light is penetrated, the second micro-structure 12 is arranged against the first micro-structure 11, and third micro-structure 13 abuts second
Micro-structure 12 is arranged.
Wherein, each adjacent total reflection that the spacing between each adjacent refraction tooth of tooth group is greater than total reflection tooth group is reflected
Spacing between tooth, therefore, from the point of view of the overall structure of lens unit 1, refraction tooth group is for total reflection tooth group, refraction
The arrangement of tooth group is totally reflected tooth group and compares arrangement and compare comparatively dense than sparse.
The plane block design of first micro-structure 11 as shown in figure 3, the land lengths of the first micro-structure 11 for incident light
The subtended angle θ 1 of (by taking the incident light is the light that LED2 is issued as an example) centre of luminescence has following formula to provide.
The target light distribution of thin film lens is distributed with following formula and provides：
I (θ)=I0COSn(θ)；
Wherein, I0Corresponding light intensity when for angle being zero, n are the power function index with light distribution, n=1 epoch mass color point
Cloth is the distribution of lambert's property, and n=0 represents light and is uniformly distributed.
The +/- △ θ 1 of θ 1=θ 3+ (θ 3/2)；
Wherein, θ 3 is the angle with light distribution of design object, i.e. I0/ 2 corresponding angles；
△ θ 1 is the waving interval of emergent ray at the first micro-structure 11, and value has following formula to provide：
△ θ 1=θ 3/2*10%.
The design of second micro-structure 12 is as shown in figure 4, light is issued after the second micro-structure 12 by LED2, according to Si Nieer
The law of refraction reflects, to control the shooting angle θ 2 of light, formula is as follows：
θ 2=θ 1- △ θ 2；
Wherein, △ θ 2 is the waving interval of emergent ray at the first micro-structure 11, and value has following formula to provide：
△ θ 1=θ 3/2*10%.
The design of third micro-structure 13 carries out deviation as shown in figure 5, light has LED2 sending, by inclined-plane, is then incident on
Next adjacent inclined-plane, light are totally reflected on this inclined-plane, are then emitted according to the angle, θ of particular design 5.
First micro-structure 11, the second micro-structure 12 and third micro-structure 13 of this example are designed based on Fresnel reflection law
, specifically, by the analysis of following Fresnel reflection formula, in the case where not considering that optical material absorbs, optical material
System light efficiency T=1- (rp+rs)/2 with the increase of incidence angle, its light efficiency is lower, especially incidence angle be greater than Brewster angle
θ B, light efficiency sharply decline.
θ B=atan (n1/n2)；
Wherein n1 is the refractive index of incident light, and n2 is the refractive index of emergent light, and θ 1 is incidence angle, and θ 2 is the angle of emergence, rs s
The reflectivity of light, rp are the reflectivity of p light.
As a result, in order to make the available more satisfactory system effectiveness of Film Optics lens, when the incidence angle of light is less than
Brewster angle, Film Optics lens accurately control light by refracting feature, that is to say, the incidence angle of light is less than
The light route of transmission and the direction of propagation of Brewster angle are controlled by the first micro-structure 11 and the second micro-structure 12；When entering for light
Firing angle is more than or equal to Brewster angle, and Film Optics lens accurately control light by total reflection feature, that is to say, light
The incidence angle of line is more than or equal to the light route of transmission of Brewster angle and the direction of propagation is controlled by third micro-structure 13.
For example, Film Optics lens material is plastics, refractive index 1.49.
According to calculating its Brewster θ B=56.13 °
When incidence angle θ i is less than 56.13 degree, the route of transmission and the direction of propagation of light are controlled by the second micro-structure 12,
It is that light is carried out by first inclined-plane to light refraction, after reflecting using a plane to light, faces light by two
Control, finally according to design target angle be emitted, as shown in Figure 6.
When incidence angle θ i above is greater than or equal to 56.13 degree, the route of transmission and the direction of propagation of light are micro- by third
Structure 13 control, that is to say, light is carried out by first inclined-plane to light refraction, after be all-trans by second inclined-plane to light
It penetrates, after being reflected using a plane to light, control by three optical surfaces to light, finally according to the target angle of design
Outgoing, as shown in Figure 7.
In addition, in actual installation Lenticular lens unit 1, since there are lens unit 1 and rigging position error, this positions
Set error often and will cause it is final with light distribution and design between inconsistent or product to match light distribution different, quality without
Method control.To solve this problem, the characteristics of third micro-structure 13 of this example specifically designs, is：It is adjacent by total reflection tooth group every two
Total reflection tooth be one group, and, every group total reflection tooth control emergent ray intersection, that is to say, third micro-structure 13 is adjacent
Two total reflection teeth control emergent rays intersected.
As shown in figure 8, the total reflection tooth N1 control light in third micro-structure 13 emits RAY1, third micro-structure 13 upwards
In total reflection tooth N2 control light emit downwards RAY2, RAY1 and RAY2 intersection.When third micro-structure 13 is to be totally reflected tooth N1
When replacing adjacent design with total reflection tooth N2, third micro-structure 13 controls emergent ray and alternately intersects, this structure can solve thin
What film optical lens rigging position error generated matches light distribution inconsistence problems.
Specifically, the angle, θ ray of RAY1 and RAY2 ray intersection, is provided by following formula：
θ ray=atan (Δ L/L)；
Wherein, L is distance of the LED light-emitting area to Film Optics lens, and Δ L is Film Optics lens arrangement error.Such as
This when Film Optics lens relative to LED light-emitting area position deviation when within Δ L, light distribution angle and light shape will not be sent out
Raw too big change.To solve light distribution result caused by mechanical structure manufacturing and positioning errors in actual lens assembling process
The inconsistent problem in the industry of quality between the inconsistent and product of design.
The specific example that emergent ray alternately intersects is controlled to third micro-structure 13 below to be illustrated.
Distance of the lens of design with respect to LED is 1m, and lens arrangement error is 0.2mm.Using in a middle angle shot-light
On lamps and lanterns.
θ ray=atan (Δ L/L)=atan (0.2/1)=11.3 °；
As shown in figure 9, two adjacent light corresponding angles are θ i1=41.3 ° θ i2=40.9 °, light one is complete by one
Reflection tooth is totally reflected, this total reflection tooth inclined-plane is θ a1=26.9 ° in horizontal angle, and light one passes through planar exit
Backward lower section outgoing；Light two is totally reflected by adjacent total reflection tooth two, this total reflection tooth inclined-plane is in horizontal folder
Angle is θ a2=30.5, and light two is emitted after planar exit to top, and the two beam emergent lights final with light two of light one are mutual
The angle being mutually crossed to form is 11.3 °.
On the basis of third micro-structure 13 controls emergent ray intersection, in order to further improve Film Optics lens
Light distribution is consistent, can also design the emergent ray that the second micro-structure 12 and third micro-structure 13 control and also intersect, that is to say, roll over
The emergent ray for penetrating the control of tooth group intersects with the emergent ray of total reflection tooth group control, as shown in Figure 10.
It should be noted that the tooth height of each refraction tooth in second micro-structure 12 of this example is identical, tooth angle degree inclines
Slope is different, likewise, the tooth height of each total reflection tooth in third micro-structure 13 is identical, tooth angle degree slope is different,
And the second micro-structure 12 is identical with the tooth height in third micro-structure 13, by each in the second micro-structure 12 and third micro-structure 13
A tooth height is identical, realizes being uniformly distributed for Film Optics lens emergent light.
By above-mentioned design, with micro-structure Film Optics lens practical application in analog result show as Figure 11 with
Shown in Figure 12, when lens at a distance of LED be 0.9mm when its light distribution angle be 43 degree schematic diagram it is as shown in figure 11；When lens apart
When LED is 1.1mm, light distribution angle is that 42.8 degree of schematic diagram is as shown in figure 12；As shown in Figure 11 and Figure 12, although there are positions
Deviation is set, still, the light distribution angle of two positions is very close, and only 0.2 degree of difference, and the light shape of light distribution is very close,
It is all smooth water-drop-shaped, therefore, the design of the micro-structure of the Film Optics lens of this example solves actual lens assembling process
The inconsistent industry of quality between light distribution result caused by middle mechanical structure manufacturing and positioning errors and the inconsistent and product of design
Interior problem.
Embodiment three：
On the basis of example 2, this example says the shape and structure of lens unit 1 and the micro-structure arrangement of inside
It is bright.
First micro-structure 11 of this example is circle, the second micro-structure 12 is annular refractive tooth group, and third micro-structure 13 is ring
Shape is totally reflected tooth group, and the inside arrangement mode of the first micro-structure 11, the second micro-structure 12 and third micro-structure 13 is：First micro- knot
Structure 11, the second micro-structure 12 and third micro-structure 13 are concentric, and the first micro-structure 11, the second micro-structure 12 and third micro-structure
13 successively arrange from inside to outside, and under such arrangement, the lens unit 1 of this example can be made into axial symmetry revolution structure,
As shown in figure 13.
It in other embodiments, can be concentric in the first micro-structure 11, the second micro-structure 12 and third micro-structure 13
On the basis of, the first micro-structure 11, third micro-structure 13 and the second micro-structure 12 are successively arranged from inside to outside, that is to say, by
Two micro-structures 12 are arranged in outermost.
Example IV：
On the basis of embodiment three, the first micro-structure 11, the second micro-structure 12 and third micro-structure 13 can be carried out
Deformation, e.g., the first micro-structure 11 are strip, and the second micro-structure 12 is that bar shaped reflects tooth group, and third micro-structure 13 is that bar shaped is complete
Tooth group is reflected, the arrangement mode between three is：Second micro-structure 12 and third micro-structure 13 are symmetrically arranged micro- in first
The two sides of structure 11, and, the second micro-structure 12 is between the first micro-structure 11 and third micro-structure 13, as shown in figure 14.
In other embodiments, first micro-structure 11 of this example, the second micro-structure 12 and third micro-structure 13 can also be by
It arranges according to such as under type：Second micro-structure 12 and third micro-structure 13 are symmetrically arranged in the two sides of the first micro-structure 11, and,
Third micro-structure 13 is between the first micro-structure 11 and the second micro-structure 12.It that is to say, the second micro-structure 12 is arranged in most
Outside.
Embodiment five：
This example only has single lens unit 1 it should be noted that the Film Optics lens of the application can be, can also be with
That there are multiple lens units 1, when with multiple lens units 1, multiple lens unit 1 can according to preset image,
Text or track splicing arrangement, correspondingly, the shape of the lens unit 1 of this example can be regular shape during splicing
It is also possible to irregular shape.
Such as, the lens unit 1 of this example can be linear structure, be also possible to circular configuration, can also be triangular structure,
Quadrilateral structure, pentagonal configuration, hexagonal structure etc., according to practical application can using lens unit 1 of different shapes into
Row splicing, to be spliced into Film Optics lens of different shapes, as shown in figure 15, three triangle lens units 1 splice thin
Film optical lens shape, as shown in figure 16, the Film Optics lens shape of four triangle lens units 1 splicing, such as Figure 17 institute
Show, the Film Optics lens shape of six triangle lens units 1 splicing, with as shown in figure 18, more triangle lens lists
The Film Optics lens shape of 1 splicing of member.
By splicing the lens unit 1 of different number, the even results for making the control of Film Optics lens issue light are different, such as
The effect that the Film Optics lens control of Figure 19 splicing is luminous is as shown in figure 20, and such as the Film Optics lens control of Figure 21 splicing
Luminous effect is as shown in figure 22, is compared by Figure 20 and Figure 22 it is found that the effect that the Film Optics lens control of Figure 21 shines
Film Optics lens better than Figure 19.
In other truth examples, different shape can be spliced into using lens unit 1 of different shapes according to practical application
Film Optics lens, Film Optics lens splicing forming schematic diagram as shown in figures 23-27.
Embodiment six：
Based on embodiment one to embodiment five, in order to make illumination spot of the light of LED2 sending after lens unit 1
All more uniform in illumination and color, this example further includes the diffusion part 3 for being diffused to emergent ray, be that is to say,
Increase micron-sized lens array, the micro-structure thickness of the lens array on the light output surface (non-towards the face LED) of lens unit 1
No more than 0.02mm, as shown in figure 28, the light of LED2 is after the micro-structure of the incidence surface of thin film lens with certain side
To the diffusion part 3 with micro-structure for being incident on light-emitting surface, so that, previously more directive light can be along previous side
It is spread around to by certain angle.
As shown in figure 29, the diffusion part 3 with micro-structure is increased by the light-emitting surface in Film Optics lens, it can be seen that
Either the uniformity of illumination or color homogeneity are all significantly improved.Usual angular spread it is bigger, hot spot it is bright
Degree and color homogeneity are better；It can carry out the micro-structure curvature that design wants diffusion angle according to the demand of practical application
Size.
Embodiment seven：
This example provides a kind of design method of Film Optics lens involved in embodiment one to embodiment six, film light
The material for learning lens is optical plastic, and setting keeps first micro- knot in light raw propagation direction on the incidence surface of optical plastic
Structure, second micro-structure of the setting by the refraction control light direction of propagation and the third by the total reflection control light direction of propagation
The specific design procedure of micro-structure, the first micro-structure, the second micro-structure and third micro-structure includes：
1) the first micro-structure is designed on optical plastic according to the angle with light distribution of design object；
First micro-structure of design is to control light to press the planar structure that raw propagation direction is propagated, the model of the first micro-structure
It encloses design and please refers to embodiment two, this example does not repeat.
2) Brewster angle is calculated according to the refractive index of optical plastic；
3) on optical plastic, the second micro-structure is designed into the region that angle of incidence of light is less than Brewster angle；
4) on optical plastic, the micro- knot of third is designed into the region that angle of incidence of light is more than or equal to the Brewster angle
Structure.
Second micro-structure is that the refraction tooth group that light refraction is propagated is controlled by toothing, and third micro-structure is to pass through tooth knot
Structure controls the total reflection tooth group that light total reflection is propagated.
Preferably, when designing third micro-structure, the total reflection tooth group of third micro-structure is designed as：Every two is adjacent complete
Reflecting tooth is one group, and the emergent ray intersection of every group of total reflection tooth control is alternately intersected by emergent ray, two-by-two to solve
When Film Optics lens use because between light distribution result caused by rigging error and the inconsistent and product of design quality it is inconsistent
Problem in the industry.The detail with reference embodiment two that second micro-structure and third micro-structure of this example specifically design, this example is not made
It repeats.
Further, this example further includes the steps that thering is micro-structure and diffusion part, the expansion in the light-emitting surface design of optical plastic
The portion of dissipating is for being diffused emergent ray.
This example provides the basic thoughts that design has the Film Optics lens of micro-structure, are changed by micro-structure with realizing
The purpose of light propagation approach and the direction of propagation, the Film Optics lens specific structure and shape of design please refer to embodiment one to reality
Example six is applied, this example does not repeat.
Embodiment eight：
Embodiment six is arrived based on embodiment one, this example provides a kind of lighting device using the application Film Optics lens,
The lighting device includes LED light group, further includes the Film Optics lens with micro-structure of the application, and the Film Optics of this example is saturating
The detailed description of mirror specifically please refers to embodiment one to embodiment six, and this example does not repeat, and the Film Optics lens are specifically used
When, the incidence surface of Film Optics lens is covered in LED light group, so that Film Optics lens pass through the first micro-structure, second micro-
Structure and third micro-structure control the luminous route of transmission of LED light group and the direction of propagation.
In concrete application, Film Optics lens can by multiple lens units splice form, and the quantity of lens unit with
The quantity of LED illuminator corresponds in LED light group, so that single lens unit is corresponding to cover single led illuminator；At other
In truth example, the quantity of lens unit can also be less than the quantity of LED illuminator, so that the corresponding covering two of single lens unit
Or three or more LED illuminators, in other embodiments, Film Optics lens may also be only single lens unit, thoroughly
Mirror unit covers LED light group.
The Film Optics lens of the application have the following advantages that in lighting device application：
It 1. the micro-structure using microstructure film optical lens is very thin, can such as accomplish only 0.02mm thickness, and show
Some lens are most thin also to want 10mm, this can greatly save material used in secondary optical lens.
2. using this ultra-thin microstructure film optical lens can make lamps and lanterns become very it is frivolous, such as using
When LED spotlight lamps and lanterns, if using existing common solution its lamps and lanterns most it is thin can only accomplish 20mm thickness, and use it is of the invention
The lamps and lanterns of microstructure film optical lens scheme are most thin can to accomplish 3mm, and lamps and lanterns is not only made to become very slim, while greatly
Reduce material used in lamps and lanterns.It really solves the problems, such as most to ask in illuminating industry：Material is saved, cost is reduced, is preceding
Design defend, beautiful and generous.
3. this microstructure film optical lens can be by simply deforming, to realize different hot spot distributions, such as line
Property, triangle, quadrangle, the abnormity hot spot such as pentagon lamp.
4. this microstructure film optical lens can be designed to that the scale structure with tooth form, scale structure may be implemented to mix
The effect of light, for the light that LED can be made to issue after the control of Film Optics lens, illumination spot is more uniform, color point
Cloth is more consistent.
It is accurate control close to the micro-structure face of LED 5. this microstructure film optical lens can be designed to double-side micro structure
Beam projecting direction processed；Micro-structure face far from LED is the diffusion for making light carry out certain angle along the main exit direction of light
Effect.To reach the angle design for matching light distribution, the hot spot brightness and the uniformity of color of high quality are combined.
6. this microstructure film optical lens is also used as independent unit and carries out compact splicing, can not only have
LED quantity more more than existing scheme arrangement, can about increase the arrangement of 20% LED particle number, not only such as in the space of limit
This is conducive to LED heat and is evenly distributed due to the evenly dispersed arrangement of LED, provides the heat-sinking capability of lamps and lanterns, and that improves LED lamp can
By property and prolong the service life.
7. the splicing arrangement of this Lenticular lens unit can also be spelled according to specially designed pattern, text or track
Run in cloth.Can make lamps and lanterns not only in this way can be improved the needs of illumination, lamps and lanterns can also be made to become a decoration, with space
Design combines together.Really meet the needs of personalized illumination.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (27)
1. a kind of Film Optics lens with micro-structure, which is characterized in that including：At least one lens unit, the lens
Unit includes incidence surface and light-emitting surface, and the incidence surface is provided with：It keeps first micro-structure in light raw propagation direction, pass through
Second micro-structure of the refraction control light direction of propagation and the third micro-structure that the light direction of propagation is controlled by total reflection；
The lens unit passes through the first micro-structure, the route of transmission of the second micro-structure and third microstructure testing incident light and biography
Broadcast direction.
2. Film Optics lens as described in claim 1, which is characterized in that first micro-structure is control light by original
The planar structure that the direction of propagation is propagated, second micro-structure are to control the refraction tooth group that light refraction is propagated by toothing,
The third micro-structure is the total reflection tooth group for controlling light total reflection by toothing and propagating.
3. Film Optics lens as claimed in claim 2, which is characterized in that it is described refraction tooth group each adjacent refraction tooth it
Between spacing be greater than it is described total reflection tooth group it is each it is adjacent total reflection tooth between spacing.
4. Film Optics lens as claimed in claim 2, which is characterized in that every two adjacent are all-trans in the total reflection tooth group
Penetrating tooth is one group, and, the emergent ray intersection of every group of total reflection tooth control.
5. Film Optics lens as claimed in claim 2, which is characterized in that the emergent ray of the refraction tooth group control and institute
State the emergent ray intersection of total reflection tooth group control.
6. Film Optics lens as claimed in claim 2, which is characterized in that each refraction tooth in second micro-structure
Tooth height is identical, tooth angle degree slope is different.
7. Film Optics lens as claimed in claim 5, which is characterized in that each total reflection tooth in the third micro-structure
Tooth height is identical, slope of tooth angle degree is different.
8. Film Optics lens as claimed in claim 7, which is characterized in that in second micro-structure and third micro-structure
Tooth height is identical.
9. Film Optics lens as claimed in claim 2, which is characterized in that first micro-structure is round, and described second
Micro-structure is annular refractive tooth group, and the third micro-structure is annular total reflection tooth group.
10. Film Optics lens as claimed in claim 9, which is characterized in that first micro-structure, the second micro-structure and
Three micro-structures are concentric, and first micro-structure, the second micro-structure and third micro-structure are successively arranged from inside to outside.
11. Film Optics lens as claimed in claim 9, which is characterized in that first micro-structure, the second micro-structure and
Three micro-structures are concentric, and first micro-structure, third micro-structure and the second micro-structure are successively arranged from inside to outside.
12. Film Optics lens as claimed in claim 2, which is characterized in that first micro-structure is strip, described the
Two micro-structures are that bar shaped reflects tooth group, and the third micro-structure is that bar shaped is totally reflected tooth group.
13. Film Optics lens as claimed in claim 12, which is characterized in that second micro-structure and third micro-structure point
It is not symmetrically disposed on the two sides of first micro-structure, and, second micro-structure is located at first micro-structure and third is micro-
Between structure.
14. Film Optics lens as claimed in claim 12, which is characterized in that second micro-structure and third micro-structure point
It is not symmetrically disposed on the two sides of first micro-structure, and, the third micro-structure is located at first micro-structure and second micro-
Between structure.
15. Film Optics lens as described in claim 1, which is characterized in that further include for being diffused to emergent ray
Diffusion part, the diffusion part is set to the light-emitting surface of the lens unit.
16. Film Optics lens as claimed in claim 15, which is characterized in that the diffusion part is that micron-sized lens are old
Column.
17. Film Optics lens as described in claim 1, which is characterized in that the quantity of the lens unit be it is multiple, it is multiple
The lens unit splices according to preset image, text or track arranges.
18. Film Optics lens as claimed in claim 17, which is characterized in that the shape of the lens unit is regular shape
Or irregular shape.
19. Film Optics lens as described in claim 1, which is characterized in that the lens unit with a thickness of 0.001mm-
0.5mm。
20. Film Optics lens as described in claim 1, which is characterized in that the material of the lens unit is the light of lens
Learn plastics.
21. a kind of design method of the Film Optics lens with micro-structure as described in any top claim 1-20, special
Sign is that the material of the Film Optics lens is optical plastic, and setting keeps light original on the incidence surface of optical plastic
First micro-structure of the direction of propagation, setting control the second micro-structure of the light direction of propagation by refraction and pass through total reflection control
The third micro-structure of the light direction of propagation, the specific design procedure of first micro-structure, the second micro-structure and third micro-structure
Including：
The first micro-structure is designed on the optical plastic according to the angle with light distribution of design object；
Brewster angle is calculated according to the refractive index of optical plastic；
On the optical plastic, the second micro-structure is designed into the region that angle of incidence of light is less than the Brewster angle；
On the optical plastic, third micro-structure is designed into the region that angle of incidence of light is more than or equal to the Brewster angle.
22. design method as claimed in claim 21, which is characterized in that first micro-structure is that control light presses original biography
The planar structure of direction propagation is broadcast, second micro-structure is to control the refraction tooth group that light refraction is propagated, institute by toothing
Stating third micro-structure is the total reflection tooth group for controlling light total reflection by toothing and propagating.
23. design method as claimed in claim 22, which is characterized in that during design third micro-structure, will be totally reflected
Tooth group is designed as：Every two adjacent total reflection teeth are one group, the emergent ray intersection of every group of total reflection tooth control.
24. design method as claimed in claim 22, which is characterized in that further include optical plastic light-emitting surface design have
The step of diffusion part of micro-structure, the diffusion part is for being diffused emergent ray.
25. a kind of lighting device, including LED light group, which is characterized in that further include such as the described in any item tools of claim 1-20
There are the Film Optics lens of micro-structure, the incidence surface of the Film Optics lens is covered in the LED light group, so that described thin
Film optical lens by the first micro-structure, the second micro-structure and third micro-structure to the LED light group shine route of transmission and
The direction of propagation is controlled.
26. lighting device as claimed in claim 25, which is characterized in that the Film Optics lens are by multiple lens lists
Member splicing composition, the single lens unit is corresponding to cover at least one LED illuminator.
27. lighting device as claimed in claim 25, which is characterized in that the Film Optics lens are only the single lens
Unit, the lens unit cover the LED light group.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810745509.7A CN108916822A (en) | 2018-07-09 | 2018-07-09 | A kind of Film Optics lens, design method and lighting device with micro-structure |
| PCT/CN2018/111762 WO2020010748A1 (en) | 2018-07-09 | 2018-10-25 | Thin film optical lens having microstructures, design method and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810745509.7A CN108916822A (en) | 2018-07-09 | 2018-07-09 | A kind of Film Optics lens, design method and lighting device with micro-structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108916822A true CN108916822A (en) | 2018-11-30 |
Family
ID=64425655
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810745509.7A Pending CN108916822A (en) | 2018-07-09 | 2018-07-09 | A kind of Film Optics lens, design method and lighting device with micro-structure |
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| Country | Link |
|---|---|
| CN (1) | CN108916822A (en) |
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