CN109323138A - Light distribution element, light source assembly and illuminator - Google Patents
Light distribution element, light source assembly and illuminator Download PDFInfo
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- CN109323138A CN109323138A CN201811410144.9A CN201811410144A CN109323138A CN 109323138 A CN109323138 A CN 109323138A CN 201811410144 A CN201811410144 A CN 201811410144A CN 109323138 A CN109323138 A CN 109323138A
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- distribution element
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- exit facet
- light distribution
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- 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
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
Abstract
The present invention discloses a kind of light distribution element, light source assembly and illuminator.The light distribution element has light-source chamber, binding face, the plane of incidence and exit facet, the binding face is for being bonded light source board, the exit facet is connect with the edge of the binding face and the exit facet is raised towards side relative to the fitting, the light-source chamber is formed from the middle part of the binding face to the depression in centre of the exit facet, and the plane of incidence is the inner surface of the light-source chamber；The plane of incidence and the exit facet include first surface of revolution, Extrude Face and second surface of revolution, first surface of revolution is connect by the Extrude Face with second surface of revolution, first rotating shaft of first surface of revolution is parallel with the second rotating shaft of second surface of revolution, and the extending direction of the Extrude Face is parallel to the vertical join line of first rotating shaft Yu second rotating shaft.The light distribution element can reduce the cost of illuminator.
Description
Technical field
The present invention relates to technical field of lighting devices more particularly to a kind of light distribution elements, light source assembly and illuminator.
Background technique
In lighting area, LED direct-illumination type panel lamp (or ceiling lamp) is a kind of widely used illuminator, inside set
It sets luminescence unit (specifically can be LED luminescence unit), which can emit beam after being powered.It is 35W, ruler with power
For the very little lamps and lanterns for 600*600*60mm, in order to achieve the effect that uniformly light-emitting, following three kinds of modes can be used:
The first, is arranged a large amount of luminescence unit, these array of light emitting cells are arranged on multiple light sources plate, for example, by using
14*14=196 luminescence unit.Due to the enormous amount of luminescence unit and light source board, the cost of such illuminator is non-
Chang Gao.
Second, light distribution element is set to change the direction of propagation of light and expands the range of exposures of single luminescence unit.
At this point, the quantity of luminescence unit and light source board can be reduced suitably, such as can use 36 power for the luminescence unit of 1W, this
A little luminescence units are arranged on 6 light source boards in a manner of 6 rows 6 column.Each luminescence unit is equipped with a light distribution element, therefore total
36 light distribution elements are needed altogether.Under such structure, the quantity of light source board is still more, and the quantity of light distribution element is also relatively more,
Cause the cost of illuminator still relatively high.
The third, using drawing light distribution element, the structure of such light distribution element can change, and be corresponded to this multiple
Luminescence unit.But since such light distribution element cost is higher, molding is complicated, and molding difficulty is higher, still will lead to headlamp
The high expensive of tool.
Therefore, currently employed above-mentioned each scheme can all lead to the higher cost of illuminator.
Summary of the invention
The present invention discloses a kind of light distribution element, light source assembly and illuminator, to reduce the cost of illuminator, and is promoted
Light efficiency.
To solve the above-mentioned problems, the present invention adopts the following technical solutions:
A kind of light distribution element, the light distribution element have light-source chamber, binding face, the plane of incidence and exit facet, the binding face
For being bonded light source board, the exit facet connect with the edge of the binding face and the exit facet relative to the fitting towards
Side protrusion, the light-source chamber are formed from the middle part of the binding face to the depression in centre of the exit facet, and the plane of incidence is
The inner surface of the light-source chamber；
The plane of incidence and the exit facet include first surface of revolution, Extrude Face and second surface of revolution, and described first time
Turn face and is connect with second surface of revolution by the Extrude Face, the first rotating shaft of first surface of revolution and described second time
The second rotating shaft for turning face is parallel, and the extending direction of the Extrude Face is parallel to first rotating shaft and second revolution
The vertical join line of axis.
A kind of light source assembly comprising light source board, the luminescence unit being set on the light source board and be set to the light
Light distribution element on source plate, the light distribution element are above-mentioned light distribution element, and the light distribution element is provide with the luminescence unit.
A kind of illuminator comprising optical mask, driver and above-mentioned light source assembly, the light source assembly are set to institute
It states in optical mask, the driver is electrically connected with the light source assembly.
The technical solution adopted by the present invention can reach it is following the utility model has the advantages that
The plane of incidence and exit facet of light distribution element disclosed by the invention include first surface of revolution, Extrude Face and the second revolution
Face, the space size of the adjustable light-source chamber of stretched dimension by the way that Extrude Face is arranged, and then more luminescence units are accommodated, together
When diffusion path of the light after light distribution element, on the draw direction in Extrude Face and the direction perpendicular to the draw direction
Degree is not identical, and then can not only meet the requirement of uniformly light-emitting by the installation direction of design light distribution element, can also reduce
The quantity of light source board needed for illuminator.As it can be seen that after using the light distribution element, light distribution element and hair that illuminator is included
The quantity of light unit is fewer, so that the cost of illuminator decreases.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of illuminator disclosed by the embodiments of the present invention；
Fig. 2 is the top view of structure shown in Fig. 1；
Fig. 3 is the structural schematic diagram of light distribution element in illuminator disclosed by the embodiments of the present invention；
Fig. 4 is the cooperation schematic diagram of light distribution element and luminescence unit in illuminator disclosed by the embodiments of the present invention；
Fig. 5 is the top view of structure shown in Fig. 4；
Fig. 6 is sectional drawing of the structure shown in Fig. 5 along the direction A-A；
Fig. 7 is sectional drawing of the structure shown in Fig. 5 along the direction B-B；
Fig. 8 is the cooperation schematic diagram of light distribution element and luminescence unit in illuminator disclosed in another embodiment of the present invention；
Fig. 9 is the cooperation schematic diagram of light distribution element and luminescence unit in illuminator disclosed in further embodiment of this invention；
Figure 10 is the distribution curve flux schematic diagram of light distribution element in illuminator disclosed by the embodiments of the present invention；
Figure 11 is the structural schematic diagram of illuminator disclosed in yet another embodiment of the invention.
Description of symbols:
100- light source assembly, 110- light source board, 120- light distribution element, 121- light-source chamber, 122- binding face, 123- are incident
Face, first surface of revolution of 123a-, 123b- Extrude Face, second surface of revolution of 123c-, 124- exit facet, first surface of revolution of 124a-,
The first tapered surface of 124aa-, the first cylinder of 124ab-, the first cambered surface of 124ac-, 124b- Extrude Face, 124ba-V shape face, 124bb-
Plane, 124bc- stretch cambered surface, second surface of revolution of 124c-, the second tapered surface of 124ca-, the second cylinder of 124cb-, 124cc- the
Two cambered surfaces, 130- luminescence unit, the chassis 200-, 300- optical mask.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Below in conjunction with attached drawing, technical solution disclosed in each embodiment that the present invention will be described in detail.
As depicted in figs. 1 and 2, the embodiment of the present invention discloses a kind of illuminator, which includes chassis 200, light
Learn mask 300, driver (not shown) and light source assembly 100.Chassis 200 is for installation of driver, light source assembly 100 etc.
Component.Optical mask 300 guarantees the beauty of illuminator for playing protective action to other components of illuminator
Property, the top on chassis 200 can be located at.Driver is electrically connected with light source assembly 100, to provide energy to light source assembly 100
Amount, allows light source assembly 100 to emit beam.Driver can be set in chassis 200 towards the side of optical mask 300,
Also it can be set and deviate from the side of optical mask 300 in chassis 200.Light source assembly 100 is set in optical mask 300, light source
The light that component 100 issues can pass through from optical mask 300.Illuminator disclosed by the embodiments of the present invention specifically can be face
Plate lamp, linear modulation, pendent lamp, ceiling lamp, advertising lamp box etc..
As shown in figs 2-4, light source assembly 100 can specifically include light source board 110, light distribution element 120 and luminescence unit
130.Light source board 110 is electrically connected with driver above-mentioned, and driver is allowed to provide the required electricity that shines to light source board 110
Energy.Driver can integrate in light source board 110, can also be separately provided.Luminescence unit 130 is arranged on light source board 110, therefore
Light source board 110 can power to luminescence unit 130, so that luminescence unit 130 shines, which can be preferably LED
Luminescence unit.Light distribution element 120 can be fixed on light source board 110, and it is provide at least one luminescence unit 130.Light distribution member
Part 120 can carry out the tune of the parameters such as the direction of propagation using the forms such as reflection, refraction, the light issued to luminescence unit 130
It is whole, so that the illumination effect meet demand of entire illuminator.In specific embodiment, light distribution element 120 can use lens, match
Optical element 120 can be bonded on light source board 110.
As shown in Fig. 3-Fig. 7, light distribution element 120 has light-source chamber 121, binding face 122, the plane of incidence 123 and exit facet
124.Binding face 122 is for being bonded light source board 110, and exit facet 124 is connect with the edge of binding face 122 and exit facet 124 is opposite
It is raised to side in binding face 122.Light-source chamber 121 is for accommodating luminescence unit 130, from the middle part of binding face 122 to outgoing
The depression in centre in face 124 is formed, and the plane of incidence 123 is the inner surface of light-source chamber 121.The light that luminescence unit 130 issues arrives first
Up to the plane of incidence 123, these light are projected by exit facet 124 after reflection or refraction again in light distribution element 120.
The plane of incidence 123 and exit facet 124 include first surface of revolution, Extrude Face and second surface of revolution, first surface of revolution
It being connect by Extrude Face with second surface of revolution, first surface of revolution has the first rotating shaft, and second surface of revolution has the second rotating shaft,
First rotating shaft is parallel with the second rotating shaft, and the extending direction of Extrude Face is parallel to hanging down for the first rotating shaft and the second rotating shaft
Direct-connected line.Specifically, the plane of incidence 123 includes the first surface of revolution 123a, Extrude Face 123b and the second surface of revolution 123c, exit facet
124 include the first surface of revolution 124a, Extrude Face 124b and the second surface of revolution 124c.
After adopting the above scheme, by the way that the space size of the adjustable light-source chamber 121 of stretched dimension of Extrude Face is arranged, into
And accommodate more luminescence units 130, while light is after light distribution element 120, Extrude Face draw direction and hang down
It is directly not identical in the diffusion on the direction of the draw direction, so can by design light distribution element 120 installation direction,
Not only meet the requirement of uniformly light-emitting, the quantity of light source board 110 needed for illuminator can also be reduced.As it can be seen that being matched using this
After optical element 120, the quantity of light distribution element 120 and luminescence unit 130 that illuminator is included is fewer, so that headlamp
The cost of tool decreases.
First rotating shaft of the first rotating shaft of the plane of incidence 123 and exit facet 124, the plane of incidence 123 the second rotating shaft with
Second rotating shaft of exit facet 124 can be parallel to each other, can be collinearly or not conllinear, when using conllinear set-up mode,
Distribution form of the light after light distribution element 120 is more regular, or even more evenly, therefore can make the of the plane of incidence 123
Single-revolution axis is conllinear with the first rotating shaft of exit facet 124, that is, is the first rotating shaft O1 in Fig. 6, and the second of the plane of incidence 123
Rotating shaft is conllinear with the second rotating shaft of exit facet 124, that is, is the second rotating shaft O2 in Fig. 6.
The distance between above-mentioned first rotating shaft O1 and the second rotating shaft O2 can determine the level of stretch of Extrude Face, in order to
The light-out effect for improving illuminator, the distance between the first rotating shaft O1 and the second rotating shaft O2 D can be set to 10~
15mm.Optionally, the distance between the first rotating shaft O1 and the second rotating shaft O2 are further arranged to 12 ± 0.05mm.It needs
Bright, distance here is vertical range.
In order to guarantee light-emitting uniformity, in the protrusion direction of exit facet 124, the cross sectional dimensions of the plane of incidence 123 is dull
Successively decrease, cross section here is perpendicular to the protrusion direction, and the cross section is parallel to binding face 122 in other words.That is, being gradually distance from
On the direction of binding face 122, the cross sectional dimensions of the plane of incidence 123 is gradually reduced.Further, in the plane of incidence 123, the first revolution
Face 123a and the second surface of revolution 123c is pyramidal structure, and Extrude Face 123b is v-shaped structure.Specifically, the first surface of revolution 123a
With the second surface of revolution 123c be circular conical surface a part (such as the half that can be entire circular conical surface), the two sides of the two respectively with
The mutual two parts connection at an acute angle of Extrude Face 123b, and then form complete curved surface.
In specific embodiment, in order to obtain better illumination effect, the height H3 of the above-mentioned plane of incidence 123 can be set to 4
~6mm, optionally, the H3 can be further arranged to 4.77 ± 0.05mm.In addition, the first surface of revolution 123a of the plane of incidence 123
It can be set to 2.5~5mm with the radius of gyration of the second surface of revolution 123c, optionally, which can further set
It is set to 3 ± 0.05mm.
In exit facet 124: the first surface of revolution 124a may include that the first tapered surface 124aa, the second surface of revolution 124c can be with
May include V-arrangement face 124ba including the second tapered surface 124ca, Extrude Face 124b, the first tapered surface 124aa, V-arrangement face 124ba and
Second tapered surface 124ca collectively constitutes the top exit facet of light distribution element 120, in the protrusion direction of exit facet 124, the top
The cross sectional dimensions monotonic increase of exit facet.That is, the top exit facet of light distribution element 120 is recessed to 122 side of binding face
Sunken concave face, at the top of this under the action of exit facet, the light projected from the top of light distribution element 120 is more uniform, and shines
Penetrating range also can be wider.
The top sides edge of the Extrude Face 123b of the plane of incidence 123 is defined as the first edge, the V-arrangement face 124ba of exit facet 124
Bottom edge be defined as the second edge.When Extrude Face 123b is v-shaped structure, the first edge is exactly to form the v-shaped structure two
Partial intersection, equally, the second edge are exactly the two-part intersection to form V-arrangement face 124ba.In order to further mention
High light-emitting uniformity, first edge and the second edge are in the same plane, and the two is parallel to each other and both ends are aligned.
The distance between first edge and the second edge H2 will the deviation degree to light have an impact, therefore in order to make
It obtains light uniformly to project, 1~3mm can be set by the distance between the first edge and the second edge H2, optionally, which can
To be further arranged to 1.8 ± 0.05mm.In addition, the depth H 1 of top exit facet, that is, in the side perpendicular to binding face 122
Upwards, the distance between the top edge at the second edge and top exit facet, also can the deviation degree to light have an impact.According to
This, the depth H 1 of top exit facet is set 4~7mm by the embodiment of the present invention, and optionally, which can be further arranged to
5.31±0.05mm。
Further, in exit facet 124: the first surface of revolution 124a can also include the first cylinder 124ab, first cylinder
124ab is connected with the first tapered surface 124aa, and specifically, first cylinder 124ab can be semi-cylindrical；Second surface of revolution
124c can also include the second cylinder 124cb, which is connected with the second tapered surface 124ca, specifically, should
Second cylinder 124cb can be semi-cylindrical；Extrude Face 124b can also include two opposite plane 124bb, the plane
124bb is connected with V-arrangement face 124ba.First cylinder 124ab, two plane 124bb and the second cylinder 124cb are connected, with altogether
With the column side exit facet of composition light distribution element 120, the edge of the column side exit facet and top exit facet hereinbefore
Edge be connected, and its axis is parallel to the first rotating shaft O1.After such setting, from the light of column side exit facet injection
Uniformity can achieve preferable uniformity with the uniformity of light projected from top exit facet so that the photograph of illuminator
Obvious results fruit is improved.
Further, in exit facet 124: the first surface of revolution 124a can also include the first cambered surface 124ac, first arc
Face 124ac is connect by the first cylinder 124ab with the first tapered surface 124aa；Second surface of revolution 124c can also include the second arc
Face 124cc, the second cambered surface 124cc are connect by the second cylinder 124cb with the second tapered surface 124ca；Extrude Face 124b may be used also
To include opposite stretching cambered surface 124bc, which is connect by plane 124bb with V-arrangement face 124ba.First arc
Face 124ac, stretching cambered surface 124bc and the second cambered surface 124cc are connected, and are gone out with collectively constituting the curved side portions of light distribution element 120
Face is penetrated, which is connected by column side exit facet with top exit facet, in the protrusion side of exit facet 124
Upwards, the cross sectional dimensions monotone decreasing of curved side portions exit facet.Curved side portions exit facet is whole to be emitted relative to column side
Face protrusion, and closer to binding face 122, it is bigger to protrude degree.Since the light projected from curved side portions exit facet corresponds to
The output optical zone domain of illuminator outer ledge, therefore use such arcuate structure can be with the light at the appropriate adjustment outer ledge
Deviation degree, and then reach more preferably light-emitting uniformity.
In order to enable light is distributed more uniform, and in exit facet 124, the first tapered surface 124aa and the second tapered surface
124ca is connected smoothly with V-arrangement face 124ba, and/or, the first cylinder 124ab and the second cylinder 124cb are and plane
124bb is connected smoothly, and/or, the first cambered surface 124ac and the second cambered surface 124cc are seamlessly transitted with stretching cambered surface 124bc
Connection.
In optional embodiment, the radius of the first cylinder 124ab and the second cylinder 124cb are 8~11mm, optionally,
The radius can be further arranged to 9.21 ± 0.05mm；And/or first cambered surface 124ac bottom margin and the first cylinder
Lateral distance W1 and the bottom margin of the second cambered surface 124cc and prolonging for the second cylinder 124cb between the extended surface of 124ab
The lateral distance W2 stretched between face is 1~3mm, and optionally, the W1 and W2 can be further arranged to 1.79 ± 0.05mm.
It should be noted that extended surface here refers to that the first cylinder 124ab and the second cylinder 124cb extend along respective axis
It is formed by the part opposite with the first cambered surface 124ac and the second cambered surface 124cc afterwards, which is virtual face；Laterally refer to
The direction for being parallel to binding face 122.
Above-mentioned first cambered surface 124ac and the second cambered surface 124cc can be set to inner concave arc surface, and the inner concave arc surface is to close
The direction of the plane of incidence 123 is recessed, and the two is also possible to outer convex globoidal, which protrudes to the direction far from the plane of incidence 123.
When in view of being set as outer convex globoidal, light-emitting uniformity is easier to be guaranteed, and the embodiment of the present invention is by the first cambered surface 124ac and
Two cambered surface 124cc are disposed as outer convex globoidal.
In the embodiment of the present invention, single light distribution element 120 can only be provide with a luminescence unit 130, can also be provide with more
A luminescence unit 130.In order to improve the brightness and uniformity of illuminator, while the usage quantity of light distribution element 120 is controlled, it is single
A light distribution element 120 can be provide with multiple luminescence units 130, that is to say, that can in the light-source chamber 121 of single light distribution element 120
To accommodate multiple luminescence units 130.At this point, each luminescence unit 130 can along Extrude Face (specifically can be Extrude Face 123b or
Person Extrude Face 124b) extending direction arrangement, the extending direction of the Extrude Face can be parallel to the length direction of light source board 110.
Certainly, light distribution element 120 may be set to be multiple, and each light distribution element 120 can be along the length of light source board 110
Direction arrangement, such available bigger irradiation area of set-up mode, to adapt to the lighting demand in larger space.
When accommodating multiple luminescence units 130 in the light-source chamber 121 of single light distribution element 120, it is located at the same light-source chamber
In each luminescence unit 130 in 121, the center for being arranged in the luminescence unit 130 at both ends is located at the first rotating shaft O1 and
On two-revolution axis O2.In other words, in each luminescence unit 130 being arranged in rows, it is first time corresponding that at least there are two luminescence units 130
Shaft O1 and the second rotating shaft O2 setting, so that luminescence unit 130 does not concentrate too much on the middle part of light-source chamber 121, and then appropriate
The coverage area for increasing 130 emitted light of luminescence unit, improves the illumination effect of illuminator.
In specific embodiment, as shown in figure 8,3 luminescence units 130 can be accommodated in each light-source chamber 121；Such as Fig. 5
It is shown, 4 luminescence units 130 can be accommodated in each light-source chamber 121；As shown in figure 9,5 can be accommodated in each light-source chamber 121
A luminescence unit 130.If the luminescence unit 130 accommodated in light-source chamber 121 is less than three, illuminance not can guarantee, such as
Fruit is more than 5, then illumination uniformity is unable to get guarantee, therefore the luminescence unit 130 that will be accommodated in each light-source chamber 121 again
Quantity be set as 3~5, be not only able to satisfy the requirement of illuminance, but also can guarantee illumination uniformity.
In illuminator provided in an embodiment of the present invention, light can form elliptical spot after light distribution element 120,
The long axis of the elliptical spot is parallel to the direction B-B in Fig. 5, and short axle is parallel to the direction A-A in Fig. 5.To above-mentioned light distribution member
Part 120 is carried out with light detection distribution curve flux obtained referring to Figure 10, short-axis direction of the light distribution element 120 in elliptical spot
On 150 ° of distribution curve flux full-shape >, 172 ° of the distribution curve flux full-shape > on the long axis direction of elliptical spot.It is assumed that short axle
Distribution curve flux brightness peak intensity on direction is I, and the distribution curve flux brightness peak intensity on long axis direction is up to 7I or more.
In the embodiment of the present invention, light source assembly 100 can be set 1, but in order to meet the illumination need in greater room
It asks, then can set multiple for light source assembly 100, multiple light sources component 100 is intervally arranged, and its arragement direction is perpendicular to light
The length direction of source plate 110.Optical mask 300 includes diffuser plate, and the diffuser plate is parallel with light source assembly 100 and is oppositely arranged,
Light distribution element 120 is towards diffuser plate.The light that luminescence unit 130 issues can be spread by diffuser plate, so that these light
More uniformly project.Diffuser plate can be formed and adding certain density diffusion particle in transparent substrate, the transparent base
Material can be made of transparent optical grade PC (Polycarbonate, polycarbonate), can also use transparent optical grade PMMA
(polymethyl methacrylate, polymethyl methacrylate) is made, to reach better even light effect.Certainly, transparent
Substrate can also be made of the materials such as PS (Polystyrene, polystyrene), PP (Polypropylene, polypropylene).
When multiple light sources 100 parallel arrangement of component, in order to show uniform hot spot, adjacent two rows light on diffuser plate
Illumination range between source component 100 is not completely separated, but needs to show partly overlapping effect on diffuser plate.With
This simultaneously, the illumination range of the two neighboring light distribution element 120 on same light source plate 110 is also required to partly overlap,
These overlapping ranges influence whether the uniformity of light.And between overlapping range and diffuser plate and light source assembly 100 between
It is L1 with the spacing between two neighboring light source assembly 100 with reference to shown in Fig. 2 and Figure 11 away from correlation, two neighboring light distribution element
120 spacing on the length direction of light source board 110 is L2, and light distribution element 120 and the spacing of diffuser plate are OD, and OD can satisfy
The following conditions: OD > 0.1L1 and OD > 0.89L2.It is found by modeling, when OD meets two above condition, the light of diffuser plate
Line uniformity is higher.
Optionally, above-mentioned L1 is 500~550mm, and L2 is 60~70mm, and OD is 65~70mm.Optionally, L1 can be into one
Step is set as 530 ± 2mm, and L2 can be further arranged to 62 ± 2mm, and OD can be further arranged to 60 ± 2mm.
The transmitance of diffuser plate also influences whether final light uniformity.Under normal conditions, in order to obtain higher light
According to intensity, it is even higher that a transmitance of diffuser plate can generally be maintained at 65%.And due to light source assembly 100 in the present embodiment
Negligible amounts, luminescence unit 130 also more concentrates, therefore even if the uniformity of light is higher, i.e., the brightness on diffuser plate is most
Small value/brightness maxima is larger, but high-brightness region is still more concentrated.A transmitance of diffuser plate can be kept at this time
In the interval range of 50%-60%.A transmitance by suitably reducing diffuser plate can further further high luminance area
The luminance difference in domain and low brightness area further increases the uniformity of light.
The structural parameters of illuminator provided in an embodiment of the present invention can use the following two kinds configuration mode, certainly,
Other configurations mode can be used, the embodiment of the present invention is without limitation.
The first, the ratio between the length and width of illuminator is 2:1, such as the size of illuminator is 1200*
600*60mm, the quantity of light source assembly 100 are 2, the quantity of the luminescence unit 130 in each light source assembly 100 be 18 or
18 multiple.
Second, the ratio between the length and width of illuminator is 2:1, such as the size of illuminator is 600*
600*60mm, the quantity of light source assembly 100 are 1, the multiple that the quantity of luminescence unit 130 is 18 or 18.
Emphasis describes the difference between each embodiment, difference between each embodiment in foregoing embodiments of the present invention
As long as optimization feature non-contradiction, can combine to form more preferably embodiment, it is contemplated that style of writing is succinct, then no longer superfluous at this
It states.
The above description is only an embodiment of the present invention, is not intended to restrict the invention.For those skilled in the art
For, the invention may be variously modified and varied.All any modifications made within the spirit and principles of the present invention are equal
Replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (28)
1. a kind of light distribution element, which is characterized in that the light distribution element has light-source chamber, binding face, the plane of incidence and exit facet, institute
Binding face is stated for being bonded light source board, the exit facet is connect with the edge of the binding face and the exit facet is relative to described
Towards side protrusion, the light-source chamber is formed from the middle part of the binding face to the depression in centre of the exit facet, described for fitting
The plane of incidence is the inner surface of the light-source chamber；
The plane of incidence and the exit facet include first surface of revolution, Extrude Face and second surface of revolution, first surface of revolution
It is connect by the Extrude Face with second surface of revolution, first surface of revolution has the first rotating shaft, second revolution
Face has the second rotating shaft, and first rotating shaft is parallel with second rotating shaft, and the extending direction of the Extrude Face is flat
Row is in the vertical join line of first rotating shaft and second rotating shaft.
2. light distribution element according to claim 1, which is characterized in that first rotating shaft of the plane of incidence with it is described
First rotating shaft of exit facet is conllinear, and described second time of second rotating shaft of the plane of incidence and the exit facet
Shaft is conllinear.
3. light distribution element according to claim 2, which is characterized in that first rotating shaft and second rotating shaft it
Between distance be 10~15mm.
4. light distribution element according to claim 1, which is characterized in that in the protrusion direction of the exit facet, it is described enter
The cross sectional dimensions monotone decreasing in face is penetrated, the cross section is perpendicular to the protrusion direction.
5. light distribution element according to claim 4, which is characterized in that in the plane of incidence, first surface of revolution and institute
Stating second surface of revolution is pyramidal structure, and the Extrude Face is v-shaped structure.
6. light distribution element according to claim 5, which is characterized in that the height of the plane of incidence is 4~6mm, and/or,
First surface of revolution of the plane of incidence and the radius of gyration of second surface of revolution are 2.5~5mm.
7. light distribution element according to claim 5, which is characterized in that in the exit facet, first surface of revolution includes
First tapered surface, second surface of revolution include the second tapered surface, and the Extrude Face includes V-arrangement face, first tapered surface, institute
It states V-arrangement face and second tapered surface collectively constitutes the top exit facet of the light distribution element, in the protrusion side of the exit facet
Upwards, the cross sectional dimensions monotonic increase of the top exit facet.
8. light distribution element according to claim 7, which is characterized in that the top sides edge of the Extrude Face of the plane of incidence
For the first edge, the bottom edge in the V-arrangement face of the exit facet is the second edge, first edge and second side
Along being in the same plane, the two is parallel to each other and both ends are aligned.
9. light distribution element according to claim 8, which is characterized in that between first edge and second edge
Distance is 1~3mm.
10. light distribution element according to claim 7, which is characterized in that the depth of the top exit facet is 4~7mm.
11. light distribution element according to claim 7, which is characterized in that in the exit facet, first surface of revolution is also wrapped
The first cylinder is included, second surface of revolution further includes the second cylinder, and the Extrude Face further includes opposite plane, first column
Face, the plane and second cylinder collectively constitute the column side exit facet of the light distribution element, and the column side goes out
The edge for penetrating face is connected with the edge of the top exit facet, and its axis is parallel to first rotating shaft.
12. light distribution element according to claim 11, which is characterized in that in the exit facet, first surface of revolution is also
Including the first cambered surface, second surface of revolution further includes the second cambered surface, and the Extrude Face further includes opposite stretching cambered surface, described
First cambered surface, the stretching cambered surface and second cambered surface collectively constitute the curved side portions exit facet of the light distribution element, described
Curved side portions exit facet is connected by column side exit facet with the top exit facet, in the protrusion of the exit facet
On direction, the cross sectional dimensions monotone decreasing of the curved side portions exit facet.
13. light distribution element according to claim 12, which is characterized in that in the exit facet, first tapered surface and
Second tapered surface is connected smoothly with the V-arrangement face, and/or, first cylinder and second cylinder with
The plane smooth transition connection, and/or, first cambered surface and second cambered surface are seamlessly transitted with the stretching cambered surface
Connection.
14. light distribution element according to claim 12, which is characterized in that the half of first cylinder and second cylinder
Diameter is 8~11mm, and/or, between the bottom margin of first cambered surface and the extended surface of first cylinder laterally away from
From and second cambered surface bottom margin and second cylinder extended surface between lateral distance be 1~3mm.
15. light distribution element described in any one of 2-14 according to claim 1, which is characterized in that first cambered surface and described
Second cambered surface is outer convex globoidal.
16. a kind of light source assembly, which is characterized in that including light source board, the luminescence unit being set on the light source board and setting
Light distribution element on the light source board, the light distribution element are light distribution element described in any one of claim 1-15, institute
It states light distribution element and is provide with the luminescence unit.
17. light source assembly according to claim 16, which is characterized in that the light distribution element is provide at least one described hair
Light unit.
18. light source assembly according to claim 17, which is characterized in that the light distribution element is provide with multiple luminous lists
Member, each luminescence unit is arranged along the extending direction of the Extrude Face, and the extending direction of the Extrude Face is parallel to institute
State the length direction of light source board.
19. light source assembly according to claim 18, which is characterized in that each described in the same light-source chamber
In luminescence unit, the center for being arranged in the luminescence unit at both ends is located at first rotating shaft and second revolution
On axis.
20. light source assembly described in 8 or 19 according to claim 1, which is characterized in that accommodate 3~5 in each light-source chamber
The luminescence unit.
21. a kind of illuminator, which is characterized in that including described in any one of optical mask, driver and claim 16-20
Light source assembly, the light source assembly is set in the optical mask, and the driver is electrically connected with the light source assembly.
22. illuminator according to claim 21, which is characterized in that the light source assembly is set as multiple, Duo Gesuo
Light source assembly is stated along the direction parallel interval arrangement perpendicular to the light source board length direction, the optical mask includes diffusion
Plate, the diffuser plate is parallel with the light source assembly and is oppositely arranged, and the light distribution element is towards the diffuser plate.
23. illuminator according to claim 22, which is characterized in that the spacing between the two neighboring light source assembly
For L1, spacing of the two neighboring light distribution element on the length direction of the light source board is L2, the light distribution element and institute
The spacing for stating diffuser plate is OD, wherein OD > 0.1L1 and OD > 0.89L2.
24. illuminator according to claim 23, which is characterized in that the L1 is 500~550mm, and the L2 is 60
~70mm, the OD are 65~70mm.
25. illuminator according to claim 22, which is characterized in that between the length and width of the illuminator
Ratio is 2:1, and the quantity of the light source assembly is 2, and the quantity of the luminescence unit in each light source assembly is 18
Or 18 multiple.
26. illuminator according to claim 22, which is characterized in that a transmitance of the diffuser plate is 50-
60%.
27. illuminator according to claim 21, which is characterized in that between the length and width of the illuminator
Ratio is 1:1, and the quantity of the light source assembly is 1, the multiple that the quantity of the luminescence unit is 18 or 18.
28. the illuminator according to any one of claim 21-27, which is characterized in that the illuminator is panel
Lamp.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410144.9A CN109323138B (en) | 2018-11-23 | 2018-11-23 | Light distribution element, light source assembly and lighting lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410144.9A CN109323138B (en) | 2018-11-23 | 2018-11-23 | Light distribution element, light source assembly and lighting lamp |
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| CN109323138A true CN109323138A (en) | 2019-02-12 |
| CN109323138B CN109323138B (en) | 2024-04-26 |
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| Publication number | Publication date |
|---|---|
| CN109323138B (en) | 2024-04-26 |
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