CN103807804A - Lens, manufacturing method of lens and lighting device provided with lens - Google Patents
Lens, manufacturing method of lens and lighting device provided with lens Download PDFInfo
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- CN103807804A CN103807804A CN201210461526.0A CN201210461526A CN103807804A CN 103807804 A CN103807804 A CN 103807804A CN 201210461526 A CN201210461526 A CN 201210461526A CN 103807804 A CN103807804 A CN 103807804A
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- lens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00278—Lenticular sheets
- B29D11/00298—Producing lens arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0043—Inhomogeneous or irregular arrays, e.g. varying shape, size, height
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
Abstract
The invention relates to a lens (100), which comprises a basal body (1) and a plurality of sub lenses (2) which are formed on the basal body (1), wherein each sub lens (2) is connected with adjacent sub lenses (2). The lens is characterized in that the sub lenses (2) are provided with random boundary outlines, light rays produce light spots with the random boundary outlines after passing each sub lens (2), the light spots are at least partially overlapped and/or connected with one another, and uniform light distribution can be obtained. In addition, the invention also relates to a manufacturing method of the lens and a lighting device provided with the lens.
Description
Technical field
The present invention relates to a kind of lens for lighting device.In addition the invention still further relates to, a kind of manufacture method and the lighting device with these lens of lens of the above-mentioned type.
Background technology
In light fixture, conventionally apply lenticule to realize uniform hot spot.But, because the reason for the treatment of process and optical effect, some time may obtain poor hot spot.In some light fixtures, conventionally adopt so a kind of lens, on lens, be formed with the lens arra being formed by the lenticule of the well-regulated hexagonal boundary profile of multiple tools.But, in the process of processing and manufacturing, need on the substrate of lens, cut by cutter such microlens structure.Under desirable state, the intersection between adjacent microlens structure should be very sharp-pointed, but the blade of cutter itself also has radius, and therefore the intersection between adjacent microlens structure also may have certain radius.The borderline region of the hot spot therefore projecting may be inhomogeneous.In addition, because each microlens structure is all identical regular hexagon, therefore the hot spot projecting is also the inhomogeneous light distribution effect of orthohexagonal, the regularly arranged hot spot borderline region that can be amplified in hot spot, and then makes the light skewness of the whole hot spot that lens produce.
For solving this technical problem, in prior art, propose, for example change lenticular size.But effect is limited.Distribute because if wish to obtain good light, other optical parametric so, such as beam angle, optical efficiency etc. will variation.Other solution is on lenticule face, to increase a diffusion sheet.But this can reduce optical efficiency significantly.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of lens for lighting device, these lens can guarantee that all optical parametrics do not occur, under the prerequisite of marked change, can also provide uniform optical profile.In addition, the invention allows for a kind of the above-mentioned type lens manufacture method and there is the lighting device of lens of the type.
First object of the present invention realizes thus by a kind of lens for lighting device, these lens comprise matrix and are formed on the multiple sub-lens on matrix, each sub-lens is connected with adjacent all sub-lens, wherein, sub-lens has random boundary profile, after making light by each sub-lens, produce and have the hot spot of random boundary profile, these hot spots are overlapping and/or join at least in part each other, distribute to obtain uniform light.In design of the present invention, the boundary profile of each sub-lens is all random, and the trend of each part of boundary profile is random.Like this, the boundary profile of most sub-lens is all irregular.At this, term " irregular boundary profile " is construed as the boundary profile that is different from regular polygon, and the length of each section of this boundary profile and angle each other should be all random.The effect of bringing is thus, the boundary profile of the sub-hot spot being produced by these sub-lens is also irregular, the trend of the boundary profile of this little hot spot is also random, this a little hot spot mixes mutually, thereby in the overall hot spot producing according to lens of the present invention in observation, there will not be the striped of rule trend, and then make the overall hot spot forming visually seem to have uniform light distribution effect.
According to a preferred design of the present invention, the boundary profile of each sub-lens is different.Because the boundary profile of each sub-lens is different, therefore avoided to the full extent the boundary profile part linking together to formation rule on the exit facet of lens, and then avoided to the full extent the part edge part of sub-hot spot to couple together, to destroy on the whole light distribution effect uniformly.
Propose according to the present invention, sub-lens forms sub-lens array on matrix, by at least one, the sub-lens ring centered by a sub-lens forms sub-lens array, wherein, at the optical axis direction of lens, the boundary profile of the sub-lens in outermost sub-lens ring is made up of multiple straightways or is made up of multiple straightways and a curved section, and the boundary profile of all sub-lens sub-lens in outermost sub-lens ring forms by multiple straightways.According to design of the present invention, before not forming final lens, sub-lens should have same or different curved surface profile, and in order to obtain irregular boundary profile, overlapping at least in part between adjacent sub-lens, according to Boolean calculation, these overlapping parts are removed, thereby make the boundary profile of sub-lens comprise multiple straightways.Some regions of sub-lens in outermost sub-lens ring do not have overlapping part in addition, and therefore this part has formed curved section.But, in some special situations, for example, need lens to there is square overall profile, designer also can consider the lens of formation to revise, and now, the curved section of the sub-lens of outermost sub-lens ring will be trimmed to straightway.
Preferably, straightway is the part portion section of the straight line line between the intersection point between virtual the curve forming in a side that is formed with sub-lens of matrix extending with exit facet extension trend of exit facet of adjacent sub-lens.In fact, so-called virtual face refers to the part in the side that is formed with sub-lens that should extend to matrix of sub-lens, but cause these virtual to be removed by the operational pattern of Boolean calculation, especially union because adjacent sub-lens is partly overlapping.
Further preferably, curved section is the curve that the exit facet of the outermost sub-lens in lens forms in a side that is formed with sub-lens of described matrix.As described above, because some regions of the sub-lens in outermost sub-lens ring do not have overlapping part, the curve that therefore this part forms on matrix has directly formed curved section.
Propose according to the present invention, the line between the focusing center of each sub-lens in sub-lens ring is circular or oval.The arrangement of this Rotational Symmetry or radial symmetric is conducive to the sensing of the light of accurately setting scioptics outgoing.
Preferably, the camber line between the focusing center of the sub-lens in each sub-lens ring is apart from S
iobtain by formula (I): S
i=A+Bi+Ci
2+ Di
3, wherein A, B, C, D is constant, i is the sequence number of sub-lens ring.A, B, C, D be design at the beginning of default definite value, in the time of different sub-lens number of rings amounts, can accurately obtain the camber line distance between the focusing center of each sub-lens in corresponding sub-lens ring, thereby guarantee that the distribution of light of each direction of the hot spot forming at lens is uniform.In design of the present invention, designer can rule of thumb come to determine constant A, B, C, the concrete numerical value of D, and in the debug process in later stage, adjust above-mentioned constant, can both be completely crossing between adjacent sub-lens thereby guarantee, rather than the white space that appearance cannot be crossing between it.In addition, in design of the present invention, the camber line distance between the sub-lens in identical sub-lens ring is all identical.
Further preferably, the quantity N of the sub-lens in each sub-lens ring
iobtain by formula (II): N
i=C
i/ S
i, wherein, C
ifor circular or oval-shaped girth, wherein, circular or oval-shaped girth C
ican pass through formula (III) or formula (IV) obtains: in the time that the line between the focusing center of sub-lens is circle, and (III) C
i=2 π r, wherein, the circular default radius that the sub-lens focusing center at r Wei Yi center is the center of circle; In the time that the line between the focusing center of sub-lens is ellipse, (IV) C
i=2 π R+4 (R-r), wherein, r is that oval-shaped default semi-minor axis is long, R is that oval-shaped default major semiaxis is long, wherein, the sub-lens focusing center centered by the minor axis of oval-shaped sub-lens ring and the intersection point of major axis.In design of the present invention, designer rule of thumb carrys out to determine the radius of circular sub-lens ring or determines the major axis of oval-shaped sub-lens ring and the length of minor axis, and check this default size whether suitable according to experiment, further adjust again if improper.After obtaining suitable size, just can determine circular or oval-shaped girth, and in the situation that calculating camber line distance, accurately set out the quantity of the sub-lens in each sub-lens ring, thereby guarantee that the distribution of light of each direction of the hot spot forming at lens is uniform.
But, due in the case of the quantity of circular or oval-shaped girth and sub-lens is certain, while arranging sub-lens with the camber line distance of knowing, can not guarantee that the camber line distance of the focusing center of all sub-lens is all consistent.Therefore advantageously, at the quantity N obtaining according to formula (II)
iwhile having fractional part, the final camber line between the focusing center of sub-lens obtains by formula (V) or formula (VI) apart from S: (V) S=C
i/ [N
i] or (VI) S=C
i/ [N
i].In design of the present invention, if the girth C of sub-lens ring
iwith the business of camber line distance who obtains according to formula (I) be integer, camber line so is now apart from the final camber line distance just can be used as between the focusing center of sub-lens.But, can not guarantee that in some cases the girth of sub-lens ring and the business of the camber line distance obtaining according to formula (I) they are integer, it may have fractional part, now, need to adjust the camber line distance obtaining by formula (I).In this case, the business who rounds the value of rear acquisition under being undertaken by the girth of known sub-lens ring and the numerical value obtaining according to formula (II) determines final camber line distance, that is to say, suitably increases the camber line distance obtaining by formula (I).The business who rounds the value of rear acquisition on can certainly being undertaken by the girth of known sub-lens ring and the numerical value obtaining according to described formula (II) determines final camber line distance, that is to say, in the quantity of the sub-lens obtaining according to formula (II), add again a sub-lens, and suitably dwindle the camber line distance obtaining by formula (I).
A preferred design according to the present invention proposes, and sub-lens limits light outgoing region on matrix, and wherein, sub-lens covers light outgoing region completely.This that is to say, between each sub-lens, can not have gap, and these gaps can seriously affect the light distribution performance of the light of lens output.
Preferably, each sub-lens has identical radius of curvature.Optionally, described in each, sub-lens has different radius of curvature.Further alternative, the sub-lens in same sub-lens ring has identical radius of curvature.In the time having different radius of curvature, the radius of curvature of the sub-lens in same sub-lens ring can be identical, but is different from the radius of curvature of the sub-lens in other sub-lens ring.In other design, the radius of curvature of all sub-lens also can be different, so in this case, and before forming final lens, the degree that adjacent sub-lens intersects each other is also different, and this has further strengthened the randomness of the profile of sub-lens.Certainly aspect radius of curvature, can also there iing any other combination.
Further preferably, the exit facet of sub-lens is sphere.Certainly, this exit facet can be also the curved surface of other any types.
Propose according to the present invention, sub-lens is designed to the raised structures protruding from the surface of matrix or is recessed to the recessed structures in matrix.But these two kinds of different structures can produce same optical effect.
Further propose according to the present invention, matrix is formed as smooth or arc in a side that is formed with sub-lens.According to the difference of the require light shape obtaining, the profile of matrix itself and surperficial trend can be adjusted at random.
Another object of the present invention realizes by a kind of manufacture method of lens, wherein these manufacture method following steps: a) provide matrix; B) on matrix, form multiple sub-lens, wherein each sub-lens is connected with adjacent all sub-lens; Wherein, in step b), so form sub-lens, make sub-lens there is respectively irregular boundary profile, make light pass through to produce irregular hot spot after each sub-lens, irregular hot spot is overlapping and/or join at least in part each other, distributes to obtain uniform light.
Preferably, in step b), the straightway of the boundary profile by Boolean calculation to adjacent sub-lens carries out correction of the flank shape.Advantageously, the compute mode that Boolean calculation is union.Manufacturing according in the method for lens of the present invention, in order to obtain the sub-lens with random boundary profile, at the beginning of manufacturing, adjacent sub-lens is intersected each other, and obtain new object form by Boolean calculation.In design of the present invention, adopt the Boolean calculation mode of union, that is to say the crossing part of sub-lens is deleted.At this, Boolean calculation is to process the logical mathematics computing method of relation between two-value, comprises associating, intersects, subtracts each other.In graphics process operation, quote this logical calculation method so that the simple new body of fundamental figure combination results.The present invention has adopted this compute mode to carry out correction of the flank shape to sub-lens.
The method according to this invention proposes, and in step b), first determines that by formula (I) camber line between the focusing center of the sub-lens in each sub-lens ring is apart from S
i: S
i=A+Bi+Ci
2+ Di
3, wherein A, B, C, D is constant, i is the sequence number of sub-lens ring.Then, determine the quantity N of the sub-lens in each sub-lens ring by formula (II)
i: N
i=C
i/ S
i, wherein, C
ifor circular or oval-shaped girth, wherein, circular or oval-shaped girth C
ican pass through formula (III) or formula (IV) obtains: in the time that the line between the focusing center of sub-lens is circle, and (III) C
i=2 π r, wherein, the circular default radius that the sub-lens focusing center at r Wei Yi center is the center of circle; In the time that the line between the focusing center of sub-lens is ellipse, (IV) C
i=2 π R+4 (R-r), wherein, r is that oval-shaped default semi-minor axis is long, R is that oval-shaped default major semiaxis is long, wherein, the sub-lens focusing center centered by the minor axis of oval-shaped sub-lens ring and the intersection point of major axis.In addition, at the quantity N obtaining according to formula (II)
iwhile having fractional part, the final camber line between the focusing center of sub-lens obtains by formula (V) or formula (VI) apart from S: (V) S=C
i/ [N
i] or (VI) S=C
i/ [N
i].In design of the present invention, if the girth C of sub-lens ring
iwith the business of camber line distance who obtains according to formula (I) be integer, camber line so is now apart from the final camber line distance just can be used as between the focusing center of sub-lens.
Last object of the present invention realizes by a kind of lighting device, and this lighting device comprises light source, and wherein, this lighting device also comprises the lens of the above-mentioned type.Lighting device according to the present invention does not occur, under the prerequisite of marked change, can also provide uniform optical profile at all optical parametrics of the light that can guarantee output.
Preferably, light source comprises at least one LED luminescence unit.LED luminescence unit has advantages of that luminous efficiency is high, the life-span long and environmental protection and energy saving.
It should be understood that the feature of different exemplary embodiment described herein can be bonded to each other if do not have other dated especially.
Accompanying drawing explanation
Accompanying drawing forms the part of this description, for helping further to understand the present invention.These accompanying drawings illustrate embodiments of the invention, and are used for illustrating principle of the present invention together with description.Identical parts represent with identical label in the accompanying drawings.Shown in figure:
Fig. 1 is according to the top view of the regional area of lens of the present invention;
Fig. 2 is the top view according to lens of the present invention;
Fig. 3 is according to the sectional view of lens of the present invention embodiment;
Fig. 4 is according to the sectional view of another embodiment of lens of the present invention;
Fig. 5 is according to the top view of the sub-lens of lens of the present invention embodiment;
Fig. 6 is according to the top view of another embodiment of the sub-lens of lens of the present invention.
Fig. 7 is the manufacturing method according to the invention position principle schematic diagram of the focusing center of stator lens really;
Fig. 8 is the manufacturing method according to the invention principle schematic diagram of the boundary profile of stator lens really.
The specific embodiment
In being discussed in more detail below, reference forms the accompanying drawing of the part of this description, wherein, shows and can implement specific embodiments of the invention in the mode of illustration.About figure, such as " on ", D score, " left side ", " right side " directional terms use with reference to the direction of described accompanying drawing.Because the assembly of the embodiment of the present invention can be placed on many different directions, thus direction term only for explanation, and without any restriction the meaning.It should be understood that and can use other embodiment, and can carry out structure or logical changes under the prerequisite that does not deviate from scope of the present invention.So, describes in detail and should not be understood to the restrictive meaning below, and the present invention is defined by the appended claims.
Fig. 1 shows according to the top view of the regional area of lens 100 of the present invention.As seen from the figure, lens 100 comprise that matrix 1(is referring to Fig. 3 and Fig. 4) and be formed on multiple sub-lens 2 on matrix 1, each sub-lens 2 is connected with adjacent all sub-lens 2, wherein, sub-lens 2 has irregular boundary profile, make light pass through the irregular hot spot of the rear generation of each sub-lens 2, irregular hot spot is overlapping and/or join at least in part each other, distributes to obtain uniform light.In the present embodiment, described in each, the boundary profile of sub-lens 2 is different.Because the boundary profile of each sub-lens 2 is different, therefore avoided to the full extent the boundary profile part linking together to formation rule on the exit facet of lens 100, and then avoided to the full extent the part edge part of sub-hot spot to couple together, to destroy on the whole light distribution effect uniformly.
In addition, visible in Fig. 1, sub-lens 2 forms sub-lens array on matrix 1, and by least one, the sub-lens ring centered by a sub-lens 2 forms sub-lens array.Visible in Fig. 2, at the optical axis direction of lens 100, the boundary profile of the sub-lens in outermost sub-lens ring is made up of multiple straightways and a curved section, wherein, straightway is the part portion section of the straight line line between the intersection point between virtual the curve forming in a side that is formed with sub-lens 2 of matrix 1 extending with exit facet extension trend of exit facet of adjacent sub-lens 2, and the curve (enlarged drawing in referring to Fig. 1 shown in right side) that the exit facet that curved section is the outermost sub-lens 2 in lens 100 forms in a side that is formed with sub-lens 2 of matrix 1.In Fig. 1, can clearly see, the boundary profile of all sub-lens 2 sub-lens 2 in outermost sub-lens ring forms by multiple straightways.In addition, if lens 100 according to the present invention are designed to circle on the whole, need so lens 100 to repair, namely the curved section of the outermost sub-lens ring to lens 100 is repaired, and revised curved section has formed a part for the circular boundary of lens 100.In some special situations, for example need lens 100 to there is square overall profile, designer also can consider the lens 100 of formation to revise, and now, the curved section of the sub-lens 2 of outermost sub-lens ring will be corrected for straightway.
Fig. 3 shows according to the sectional view of lens 100 of the present invention embodiment, and as seen from the figure, sub-lens 2 is designed to the raised structures protruding from the surface of matrix 1.On the contrary, Fig. 4 shows according to the sectional view of another embodiment of lens 100 of the present invention, and as seen from the figure, sub-lens 2 is designed to be recessed to the recessed structures in described matrix 1.In addition, in the present embodiment, the exit facet of sub-lens 2 is sphere.Certainly, this exit facet can be also the curved surface of other any types.
In addition, in the embodiment shown in Fig. 3 and Fig. 4, matrix 1 is formed as smooth in a side that is formed with sub-lens 2.In other unshowned embodiment, the difference of light shape that obtains of requiring, the profile of matrix 1 itself and surface trend can be also arc be formed as in other words curved surface.
Fig. 5 shows according to the top view of an embodiment of the sub-lens 2 of lens of the present invention.As seen from the figure, all sub-lens 2 in figure all have identical diameter, that is to say that these sub-lens 2 have identical radius of curvature.
Fig. 6 shows according to the top view of another embodiment of the sub-lens 2 of lens of the present invention.As seen from the figure, all sub-lens 2 in figure all have different diameters, that is to say that these sub-lens 2 have different radius of curvature.In Fig. 6, from right to left side see and from centre both sides up and down, the diameter of sub-lens 2 increases gradually, that is to say that their radius of curvature also increases gradually.
In addition, it is pointed out that at this sub-lens 2 in Fig. 5 and Fig. 6 all illustrates with circle, parton lens 2 do not intersect each other, but these two accompanying drawings are only for schematically illustrating the relation of the radius of curvature of sub-lens 2, and the adjacent sub-lens in actual lens is connected with each other.
Fig. 7 is the manufacturing method according to the invention position principle schematic diagram of the focusing center of stator lens 2 really.As can be seen from Fig. 7, the line between the focusing center of each sub-lens 2 in sub-lens ring is oval, but in other unshowned embodiment, the line between the focusing center of each sub-lens 2 can be also circular.It is pointed out that in addition that sub-lens 2 in the bosom in sub-lens array also can be positioned at the center of lens 100, it also can be in other position.
Visible in the schematic diagram shown in Fig. 7, the camber line between the focusing center of the sub-lens 2 in each sub-lens ring is apart from S
iobtain by formula (I): S
i=A+Bi+Ci
2+ Di
3, wherein A, B, C, D is constant, i is the sequence number of sub-lens ring.For example, in the time of i=1, and rule of thumb definite A=1.04 of designer, and B, C, D is all chosen as at 1 o'clock, S
1=1.04.A, B, C, D be design at the beginning of default constant, these constants are rule of thumb selected by designer, and in test further adjust, to guarantee that adjacent sub-lens 2 can intersect each other.In addition, in the time of different sub-lens ring sequence numbers, can accurately obtain the camber line distance between the focusing center of each sub-lens 2, thereby guarantee that the distribution of light of each direction of the hot spot forming at lens 100 is uniform.
In addition, the quantity N of the sub-lens 2 in each sub-lens ring
iobtain by formula (II): N
i=C
i/ S
i, wherein, C
ifor circular or oval-shaped girth, wherein, circular or oval-shaped girth C
ican pass through formula (III) or formula (IV) obtains: in the time that the line between the focusing center of sub-lens 2 is circle, and (III) C
i=2 π r, wherein, the circular default radius that the focusing center of the sub-lens 2 at r Wei Yi center is the center of circle; In the time that the line between the focusing center of sub-lens 2 is ellipse, (IV) C
i=2 π R+4 (R-r), wherein, r is that oval-shaped default semi-minor axis is long, R is that oval-shaped default major semiaxis is long, wherein, the focusing center of the sub-lens 2 centered by the minor axis of oval-shaped sub-lens ring and the intersection point of major axis.At the quantity N obtaining according to formula (II)
iwhile having fractional part, the final camber line between the focusing center of sub-lens 2 obtains by formula (V) or formula (VI) apart from S: (V) S=C
i/ [N
i] or (VI) S=C
i/ [N
i].This be because, due at circular or oval-shaped girth C
iquantity N with sub-lens
iin certain situation, while arranging sub-lens 2 with the camber line distance of knowing, can not guarantee that the camber line distance of the focusing center of all sub-lens 2 is all consistent, for this reason need to be at this camber line apart from S
ithe whole sub-lens 2 of the enterprising step in basis between distance, to make sub-lens in same lens-ring camber line distance each other consistent.In this case, by the girth C of known sub-lens ring
iwith the numerical value of N obtaining according to formula (II)
ithe business who rounds the value of rear acquisition under carrying out determines that final camber line, apart from S, that is to say, suitably increases the camber line obtaining by formula (I) apart from S
i.Can certainly be by the girth C of known sub-lens ring
iwith the numerical value of N obtaining according to described formula (II)
ithe business who rounds the value of rear acquisition on carrying out determines final camber line distance, that is to say, in the quantity of the sub-lens obtaining according to formula (II), adds a sub-lens again, and suitably dwindles the camber line obtaining by formula (I) apart from S
i.
Fig. 8 shows the manufacture method of the present invention principle schematic diagram of the boundary profile of stator lens really.In the embodiment show in figure 8, all sub-lens 2 all have identical sweep, and line between the focusing center of sub-lens 2 is circular.In manufacturing method according to the invention, first matrix 1 need to be provided, then need to determine according to the method shown in Fig. 7 the quantity of the sub-lens in each sub-lens ring, and the position of each sub-lens 2 on matrix 1.Then the radius of curvature of further chooser lens, radius of curvature is selected as making adjacent sub-lens 2 to overlap each other, thereby fully covers the light outgoing region that sub-lens 2 limits on matrix 1.After having determined above-mentioned condition, each sub-lens 2 can be partly overlapping each other, therefore according to Boolean calculation, sub-lens 2 carried out to correction of the flank shape, that is to say, overlapping part can be removed by the compute mode of the union in Boolean calculation, thereby obtains the irregular boundary profile shown in Fig. 1.The boundary profile of each sub-lens 2 is all irregular, therefore the trend of each part of boundary profile is random, the trend of the boundary profile of the sub-hot spot therefore forming by these sub-lens 2 is also random, and then the overall hot spot that the sub-hot spot mixing is mutually formed visually seems to have uniform light distribution effect.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Reference number
1 matrix
2 sub-lens
S
icamber line distance
A, B, C, D constant
The quantity of i sub-lens ring
N
ithe quantity of sub-lens
C
igirth
The camber line distance that S is final
100 lens
Claims (24)
1. the lens for lighting device (100), comprise matrix (1) and be formed on the multiple sub-lens (2) on described matrix (1), each described sub-lens (2) is connected with adjacent all described sub-lens (2), it is characterized in that, described sub-lens (2) has random boundary profile, make light pass through to produce after each sub-lens (2) hot spot with random boundary profile, described hot spot is overlapping and/or join at least in part each other, distributes to obtain uniform light.
2. lens according to claim 1 (100), is characterized in that, the boundary profile of sub-lens described in each (2) is different.
3. lens according to claim 1 (100), it is characterized in that, described sub-lens (2) is at the upper sub-lens array that forms of described matrix (1), by at least one, the sub-lens ring centered by a described sub-lens (2) forms described sub-lens array, wherein, at the optical axis direction of described lens (100), the boundary profile of the described sub-lens (2) in outermost described sub-lens ring is made up of multiple straightways or is made up of multiple straightways and a curved section, and the boundary profile of all sub-lens (2) all sub-lens (2) in outermost described sub-lens ring forms by multiple straightways.
4. lens according to claim 3 (100), it is characterized in that, described straightway is the part portion section of the straight line line between the intersection point between virtual the curve forming in a side that is formed with described sub-lens (2) of described matrix (1) extending with described exit facet extension trend of exit facet of adjacent described sub-lens (2).
5. lens according to claim 3 (100), it is characterized in that the curve that described curved section forms in a side that is formed with described sub-lens (2) of described matrix (1) for the exit facet of the outermost sub-lens (2) in described lens (100).
6. according to the lens described in any one in claim 3 to 5 (100), it is characterized in that, the line described in each in described sub-lens ring between the focusing center of sub-lens (2) is circular or oval.
7. lens according to claim 6 (100), is characterized in that, the camber line distance (S between the focusing center of the described sub-lens (2) described in each in sub-lens ring
i) obtain by formula (I):
（Ⅰ）S
i=A+Bi+Ci
2+Di
3，
Wherein, A, B, C, D is constant, i is the sequence number of described sub-lens ring.
8. lens according to claim 7 (100), is characterized in that, the quantity (N of the described sub-lens (2) described in each in sub-lens ring
i) obtain by formula (II):
（Ⅱ）N
i=C
i/S
i，
Wherein, C
ifor described circle or oval-shaped girth, wherein, described circle or oval-shaped girth (C
i) can pass through formula (III) or formula (IV) acquisition:
In the time that the line between the focusing center of described sub-lens (2) is circle,
(III) C
i=2 π r, wherein, the default radius of the described circle that the focusing center of the described sub-lens (2) at r Wei Yi center is the center of circle;
In the time that the line between the focusing center of described sub-lens (2) is ellipse,
（Ⅳ）C
i=2πR+4(R-r)，
Wherein, r is that described oval-shaped default semi-minor axis is long, and R is that oval-shaped default major semiaxis is long, wherein, and the focusing center of the described sub-lens (2) centered by the minor axis of oval-shaped sub-lens ring and the intersection point of major axis.
9. lens according to claim 8 (100), is characterized in that, at the described quantity (N obtaining according to described formula (II)
i) while having fractional part, the final camber line distance (S) between the focusing center of described sub-lens (2) obtains by formula (V) or formula (VI):
or
10. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, described sub-lens (2) limits light outgoing region on described matrix (1), and wherein, described sub-lens (2) covers described smooth outgoing region completely.
11. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, sub-lens described in each (2) has identical radius of curvature.
12. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, sub-lens described in each (2) has different radius of curvature.
13. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, the described sub-lens (2) in same described sub-lens ring has identical radius of curvature.
14. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, the exit facet of described sub-lens (2) is sphere.
15. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, described sub-lens (2) is designed to the raised structures protruding from the surface of described matrix (1) or is recessed to the recessed structures in described matrix (1).
16. according to the lens described in any one in claim 1 to 5 (100), it is characterized in that, described matrix (1) is formed as smooth or arc in a side that is formed with described sub-lens (2).
The manufacture method of 17. 1 kinds of lens (100), comprises the following steps:
A) provide matrix (1);
B) at the upper multiple sub-lens (2) that form of described matrix (1), wherein each described sub-lens (2) is connected with adjacent all described sub-lens (2);
It is characterized in that,
In described step b), so form described sub-lens (2), make described sub-lens (2) there is respectively random boundary profile, make light pass through to produce the hot spot with random boundary profile after each sub-lens (2), described hot spot is overlapping and/or join at least in part each other, distributes to obtain uniform light.
18. manufacture methods according to claim 17, is characterized in that, in described step b), determine the camber line distance (S between the focusing center of the described sub-lens (2) in sub-lens ring described in each by formula (I)
i):
（Ⅰ）S
i=A+Bi+Ci
2+Di
3，
Wherein, A, B, C, D is constant, i is the sequence number of described sub-lens ring.
19. manufacture methods according to claim 18, is characterized in that, in described step b), determine the quantity (N of the described sub-lens (2) in sub-lens ring described in each by formula (II)
i):
（Ⅱ）N
i=C
i/S
i，
Wherein, C
ifor described circle or oval-shaped girth, wherein, described circle or oval-shaped girth (C
i) can pass through formula (III) or formula (IV) acquisition:
In the time that the line between the focusing center of described sub-lens (2) is circle,
(III) C
i=2 π r, wherein, the default radius of the described circle that the focusing center of the described sub-lens (2) at r Wei Yi center is the center of circle;
In the time that the line between the focusing center of described sub-lens (2) is ellipse,
（Ⅳ）C
i=2πR+4(R-r)，
Wherein, r is that described oval-shaped default semi-minor axis is long, and R is that oval-shaped default major semiaxis is long, wherein, and the focusing center of the described sub-lens (2) centered by the minor axis of oval-shaped sub-lens ring and the intersection point of major axis.
20. manufacture methods according to claim 19, is characterized in that, in described step b), at the described quantity (N obtaining according to described formula (II)
i) while having fractional part, the final camber line distance (S) between the focusing center of described sub-lens (2) obtains by formula (V) or formula (VI):
or
21. manufacture methods according to claim 20, is characterized in that, in described step b), the straightway of the described boundary profile by Boolean calculation to adjacent described sub-lens (2) carries out correction of the flank shape.
22. manufacture methods according to claim 21, is characterized in that, the compute mode that described Boolean calculation is union.
23. 1 kinds of lighting devices, comprise light source, it is characterized in that, described lighting device also comprises according to the lens described in any one in claim 1 to 16 (100).
24. lighting devices according to claim 23, is characterized in that, described light source comprises at least one LED luminescence unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461526.0A CN103807804B (en) | 2012-11-15 | 2012-11-15 | Lens, the manufacturing method of lens and the lighting device with the lens |
| PCT/EP2013/073446 WO2014076020A1 (en) | 2012-11-15 | 2013-11-08 | Lens, method of manufacturing lens, and illuminating device with the lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461526.0A CN103807804B (en) | 2012-11-15 | 2012-11-15 | Lens, the manufacturing method of lens and the lighting device with the lens |
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| CN103807804A true CN103807804A (en) | 2014-05-21 |
| CN103807804B CN103807804B (en) | 2018-07-06 |
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| Country | Link |
|---|---|
| CN (1) | CN103807804B (en) |
| WO (1) | WO2014076020A1 (en) |
Cited By (3)
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| CN109073205A (en) * | 2016-04-22 | 2018-12-21 | 飞利浦照明控股有限公司 | The shutter of cobble plate |
| CN109270702A (en) * | 2018-11-21 | 2019-01-25 | 四川云盾光电科技有限公司 | A kind of dissipation spot device and its generation method based on the irregular arrangement of lenticule |
| US10649130B2 (en) | 2016-04-22 | 2020-05-12 | Signify Holding B.V. | Pebble-plate like louvre with specific domain characteristics |
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| JP6671377B2 (en) | 2015-01-19 | 2020-03-25 | シグニファイ ホールディング ビー ヴィＳｉｇｎｉｆｙ Ｈｏｌｄｉｎｇ Ｂ．Ｖ． | Optical device having collimator and lenslet array |
| JP6579485B2 (en) * | 2015-06-11 | 2019-09-25 | 株式会社リコー | Optical scanning device, image display device, and object device |
| EP3104212A3 (en) * | 2015-06-11 | 2017-02-22 | Ricoh Company, Ltd. | Microlens array, image display apparatus, and optical scanner |
| JP6753660B2 (en) * | 2015-10-02 | 2020-09-09 | デクセリアルズ株式会社 | Diffusing plate, display device, projection device and lighting device |
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| Publication number | Publication date |
|---|---|
| WO2014076020A1 (en) | 2014-05-22 |
| CN103807804B (en) | 2018-07-06 |
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