CN104075252A - Light source modulation device, light source device and backlight module - Google Patents
Light source modulation device, light source device and backlight module Download PDFInfo
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- CN104075252A CN104075252A CN201410298823.7A CN201410298823A CN104075252A CN 104075252 A CN104075252 A CN 104075252A CN 201410298823 A CN201410298823 A CN 201410298823A CN 104075252 A CN104075252 A CN 104075252A
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- 238000010586 diagram Methods 0.000 description 22
- 230000001105 regulatory effect Effects 0.000 description 5
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Abstract
A light source modulation device, a light source device and a backlight module are provided, the light source modulation device is formed in a transparent plate shape and comprises a central block and at least one side wing block. The central block is provided with a central light incident surface and a central light emergent surface which are opposite. At least one side wing block is connected to at least one side of the central block positioned at the end part of the central light incident surface and the central light emergent surface; wherein the wing block is formed as a flat plate and has a wide end and a narrow end. The end face of the wide end forms a lateral light emitting surface extending from the central light emitting surface, the narrow end protrudes out of the central light incident surface and is provided with an end part, facing the central light incident surface, of the lateral light incident surface and connected with the central light incident surface; the side of the side wing block back to the central block is provided with a reflecting surface which extends from the narrow end to the wide end, and the reflecting surface is farther away from the central block when being closer to the wide end. The invention also provides a light source device and a backlight module with the light source modulation device.
Description
Technical field
The present invention relates to a kind of light source changing device, light supply apparatus and backlight module, particularly a kind of can modulation light and increase light source changing device, light supply apparatus and the backlight module of outgoing light homogeneity.
Background technology
Prior art light supply apparatus penetrates light in the mode of wide-angle conventionally, light is presented fan-shaped.As shown in Figure 1, Fig. 1 is the schematic diagram of prior art light supply apparatus.Light supply apparatus 5 comprises light source 8, and wherein light source 8 penetrates light 9, and lighting angle is up to 120 degree.In other words, prior art light supply apparatus cannot dwindle lighting angle effectively, causes light seriously to be dispersed.
In normal conditions, light supply apparatus 5 has multiple light sources 8, and light source 8 next-door neighbours arrange.In other words, adjacent light source 8 penetrates respectively the light of dispersing, and make the brightness in light overlapping region too high, and other regional luminances is too low.Comprehensively see, light supply apparatus 5 easily produces the inhomogeneous phenomenon of bright dipping, and the too high region of brightness can produce focus (hot spot).Although manufacturer attempts using optical regulating module control rising angle to improve illumination effect, produce low lumen phenomenon.In other words, the light that light source 8 produces produces consume in optical regulating module, causes light extraction efficiency not high.
Prior art
5 light supply apparatuses
8 light sources
9 light
The present invention
1,1A, 1B, 1H light source changing device
2,2A, 2B light supply apparatus
3 backlight modules
4 LGPs
10,10A centerablock
20A, 20B flank block
30 openings
40A reflecting layer
40B reflecting layer
5 light sources
60,60A light
70A, 70B, 70C, 70D light
90 pips
110,110A, 110B central authorities incidence surface
111A incidence surface
111B incidence surface
111C incidence surface
120 central exiting surfaces
120A, 120B, 120C parallel surface
200 enter optical channel
The narrow end of 210A, 210B
211A, 211B flank incidence surface
The wide end of 220A, 220B
222A, 222B flank exiting surface
250A, 250B, 250H, 250K reflecting surface
300,300A mid point
400 light inlet end faces
301 lines
500 light-emitting areas
900 sections
A echo area
B echo area
H height
ψ angle
θ angle
φ angle
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can modulation light and improve the light source changing device of lighting angle and use its light supply apparatus and backlight module.
In on the one hand, the invention provides a kind of light source changing device with centerablock and flank block, to change light going direction.
In on the other hand, the invention provides a kind of light supply apparatus that produces light portion refraction and coreflection (comprising total reflection) thereof, to distribute light density to distribute.
To achieve these goals, the invention provides a kind of light source changing device, be formed as transparent tabularly, comprise centerablock and at least one flank block.Centerablock has relative central incidence surface and central exiting surface.At least one flank block is connected in centerablock and is positioned at least one side of central incidence surface and central exiting surface end; Wherein flank block is formed as flat board, and has wide end and narrow end.The end face of wide end is formed as flank exiting surface and extends from central exiting surface, and narrow distal process is for outside central incidence surface and in the end that has flank incidence surface towards the inner side of central incidence surface and be connected in central incidence surface; Wherein flank block is formed with reflecting surface in a side of centerablock dorsad and extends to wide end from narrow end, reflecting surface in the time approaching wide end more away from centerablock.
In order to realize better above-mentioned purpose, the present invention also provides a kind of light supply apparatus, comprises light source changing device and light source.Light source changing device is formed as transparent tabular and comprise centerablock and at least one flank block.Centerablock has relative central incidence surface and central exiting surface.At least one flank block is connected in centerablock and is positioned at least one side of central incidence surface and central exiting surface end; Wherein one end of flank block has flank exiting surface and extends from central exiting surface, and the other end protrudes from outside central incidence surface and in the end that has flank incidence surface towards the inner side of central incidence surface and be connected in central incidence surface.Flank block in a side of centerablock be dorsad formed with reflecting surface in the time more approaching flank exiting surface more away from centerablock.Light source arranges towards central incidence surface; The part light that wherein light source produces enters centerablock and arrives at central exiting surface through central incidence surface; Part light is through flank incidence surface approaching side pterion piece, then arrives at flank exiting surface after reflecting surface reflection.
In order to realize better above-mentioned purpose, the present invention also provides a kind of backlight module, comprises: a LGP, has a light inlet end face; And at least one above-mentioned light supply apparatus, wherein this central authorities' exiting surface and this flank exiting surface contact this light inlet end face, and the height of this central authorities' exiting surface and this flank exiting surface is not more than this light inlet end face.
Technique effect of the present invention is:
Compared to prior art, light supply apparatus of the present invention makes part light enter centerablock, all the other light approaching side pterion pieces, and light can be evenly in central exiting surface and the outgoing of flank exiting surface.It should be noted that the curvature of the central incidence surface of capable of regulating of the present invention is to adjust refraction and the reflection case of light, and then change light path and lighting angle.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 is the schematic diagram of prior art light supply apparatus;
Fig. 2 is the embodiment schematic diagram of light source changing device of the present invention;
Fig. 3 A is the embodiment schematic diagram of light source changing device of the present invention;
Fig. 3 B is another embodiment schematic diagram of light source changing device of the present invention;
Fig. 4 is the embodiment schematic diagram of central incidence surface of the present invention;
Fig. 5 is another embodiment schematic diagram of central incidence surface of the present invention;
Fig. 6 is another embodiment schematic diagram of light source changing device of the present invention;
Fig. 7 A is the embodiment schematic diagram of light supply apparatus of the present invention;
Fig. 7 B is that light is in the light path schematic diagram of the light supply apparatus of Fig. 7 A;
Fig. 8 is another embodiment schematic diagram of light supply apparatus of the present invention;
Fig. 9 is another embodiment schematic diagram of light supply apparatus of the present invention;
Figure 10 A is the embodiment top view of backlight module of the present invention;
Figure 10 B is the embodiment side view of backlight module of the present invention.
Wherein, Reference numeral
Detailed description of the invention
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in detail:
According to a specific embodiment of the present invention, provide a kind of light source changing device that can improve lighting angle; Specifically, light source changing device of the present invention can provide light for the backlight module of display floater, and it can be applicable to panel computer, mobile phone, notebook computer, transparent display or other electronic installations, there is no specific restriction.
Please refer to Fig. 2, Fig. 2 is the embodiment schematic diagram of light source changing device of the present invention.As shown in Figure 2, light source changing device 1 is formed as transparent tabular and comprise centerablock 10 and at least one flank block 20A and 20B, and centerablock 10 has relative central incidence surface 110 and central exiting surface 120.
In this embodiment, flank block 20A and 20B are connected to centerablock 10 and are positioned at least one side of central incidence surface 110 and central exiting surface 120 ends.That is flank block 20A is connected in a side of centerablock 10, flank block 20B is connected in the opposite side of centerablock 10.But in different embodiment, also can be only in the one-sided flank block that arranges of centerablock 10.In addition, flank block 20A and 20B are formed as flat board, and wherein flank block 20A has wide end 220A and narrow end 210A, and flank block 20B has wide end 220B and narrow end 210B.
Taking flank block 20A as example, the end face of wide end 220A is formed as flank exiting surface 222A, and it extends from central exiting surface 120; Narrow end 210A protrudes from outside central incidence surface 110 and in the one end that has flank incidence surface 211A towards the inner side of central incidence surface 110 and be connected in central incidence surface 110.In this embodiment, flank exiting surface 222A preferred perpendicular is in flank incidence surface 211A.Similarly, flank block 20B forms flank exiting surface 222B in the end face of wide end 220B, and narrow end 210B is in have flank incidence surface 211B towards the inner side of central incidence surface 110.It should be noted that, light source changing device 1 arrange in pairs or groups light source use, the light that light source produces enters centerablock 10 and flank block 20A and 20B from central incidence surface 110 and flank incidence surface 211A and 211B, and light is respectively at centerablock 10 and flank block 20A and 20B advances and leave light source changing device 1 in central exiting surface 120 and flank exiting surface 222A and 222B.
As shown in Figure 2, flank block 20A is formed with reflecting surface 250A in a side of centerablock 10 dorsad and extends to wide end 220A from narrow end 210A, reflecting surface 250A in the time approaching wide end 220A more away from centerablock 10.Similarly, flank block 20B extends to wide end 220B from narrow end 210B and forms reflecting surface 250B.Reflecting surface 250A and 250B are better can be formed by Distributed reflection material; But in different embodiment, reflecting surface 250A and 250B also can be transparent surface, and the total reflection effect producing by angle own is carried out reflection ray.
Please refer to Fig. 2 and Fig. 3 A, wherein Fig. 3 A is the embodiment schematic diagram of light source changing device of the present invention.As shown in Figure 3A, flank block 20A and 20B arrange in pairs, and are positioned at centerablock 10 and are positioned at the relative both sides at central incidence surface 110 and central exiting surface 120 two ends.In this embodiment, the reflecting surface 250A that in pairs flank block 20A and 20B have respectively and 250B toward each other, and more outwards open while more approaching flank exiting surface 222A or 222B.It should be noted that, the relative curvature of reflecting surface 250A and 250B can be symmetrical or asymmetric, there is no specific restriction.
In actual conditions, flank block 20A and 20B have respectively in pairs flank incidence surface 211A and 211B press from both sides into optical channel 200, and the bottom that enters optical channel 200 is central incidence surface 110.In other words, light source changing device 1 light source of arranging in pairs or groups uses, and light source light direction is better makes light to enter light source changing device 1 from flank incidence surface 211A and 211B and central incidence surface 110.
It should be noted that into optical channel 200 and be formed with opening 30 in relative two narrow end 210A and 210B place, the angle between line 301 and the central exiting surface 120 of the mid point 300 of opening 30 and central incidence surface 110 ends is between 45 degree to 50 degree.In other words, as shown in Figure 3A, mid point 300 has angle ψ with the line 301 of central incidence surface 110 ends with the parallel surface 120A of central exiting surface 120, and wherein angle ψ is between 45 degree to 50 degree.
In addition, in this embodiment, reflecting surface 250A and 250B are evagination curved surface.As shown in Figure 3A, reflecting surface 250A has echo area A and echo area B, the wherein close wide end 220A of echo area A, and echo area B is near narrow end 220B.In this embodiment, echo area A and echo area B have identical curvature.That is arbitrary fragment face of reflecting surface 250A all has identical curvature with other masks, but not as limit.
Please refer to Fig. 3 B, Fig. 3 B is another embodiment schematic diagram of light source changing device of the present invention.As shown in Figure 3 B, in this embodiment, reflecting surface 250H and 250K are in the time more approaching flank exiting surface 222A and 222B, and curvature is larger.Taking the reflecting surface 250A of Fig. 3 A as example, in other embodiments, the curvature of echo area A is greater than the curvature of echo area B, to coordinate light to arrive at the angle of echo area A and B.Light source changing device 1 sees through the curvature of adjusting reflecting surface 250H and 250K to change optical path direction, and then controls out light effect; For example can increase the effect that light is brought together, control bright dipping subtended angle in the scope of needs.
Please refer to Fig. 4, the preferred embodiment schematic diagram that Fig. 4 is central incidence surface of the present invention.As shown in Figure 4, central incidence surface 110 is formed as evagination curved surface, and central incidence surface 110 approaches the better curvature that approaches two end portions that is greater than of curvature of middle body.In this embodiment, central incidence surface 110 comprises incidence surface 111A, incidence surface 111B and incidence surface 111C, the penetration surface that wherein incidence surface 111A is middle body, and incidence surface 111B and 111C are connected in the both sides of incidence surface 111A.It should be noted that, the curvature of incidence surface 111A is greater than the curvature of incidence surface 111B and 111C.In actual conditions, light source changing device can use compared with the incidence surface 111B of small curve and 111C total reflection light, and then distributes more light approaching side pterion piece 20A and 20B, avoids too much light to concentrate and is incident in centerablock 10.
Please refer to Fig. 5, another embodiment schematic diagram that Fig. 5 is central incidence surface of the present invention.With respect to the central incidence surface 110 of Fig. 4, light source changing device further comprises reflecting layer 40A and 40B is covered in the part of central incidence surface 110A near two ends, and exposes central incidence surface 110A by ectocentral part.Further and opinion, the middle body of central incidence surface 110A is incidence surface 111A, and central incidence surface 110A is respectively incidence surface 111B and incidence surface 111C near the part at two ends.The curvature of the middle body that in this embodiment, central incidence surface 110A exposes to the open air for reflecting layer 40A and 40B is greater than the curvature of 40AJi40B cover part, reflecting layer.In other words, the curvature of incidence surface 111A is greater than the curvature of incidence surface 111B and incidence surface 111C.Reflecting layer 40A and 40B are better to be formed with the high material of reflectivity; Separately, in different embodiment, reflecting layer 40A and 40B also can be set, and to adjust the curvature of incidence surface 111B and incidence surface 111C or gradient to produce total reflection and to reach reflecting effect with respect to light source.In another embodiment, reflecting layer 40A and 40B also can be set in part incidence surface 111B and part incidence surface 111C.
In preferred embodiment, central incidence surface 110A be the area of 40AJi40B cover part, reflecting layer account for central incidence surface 110A total surface area 60% to 80%.By the size of adjusting reflecting layer 40A and 40B, capable of regulating reflexes to the light quantity of flank block 20A and 20B, and then the light of allotment central authorities and both sides.As shown in Figure 5, reflecting layer 40A and 40B are covered in respectively incidence surface 111B and 111C, and its area is 60% to 80% of central incidence surface 110A total surface area, make the amount of light of exiting surface entirety average.
Please refer to Fig. 6, Fig. 6 is another embodiment schematic diagram of light source changing device of the present invention.As shown in Figure 6, light source changing device 1A has central incidence surface 110A.In this embodiment, the angle theta between reflecting layer 40A and 40B and central exiting surface 120 is between 30 degree to 45 degree.As shown in Figure 5, parallel surface 120B is the parallel surface of central exiting surface 120, and reflecting layer 40A and 40B and parallel surface 120B have angle theta, and wherein angle theta is between 30 degree to 45 degree.In addition, the included angle between part and the central exiting surface 120 of reflecting surface 250B reception reflecting layer 40B reflection ray is better between 30 degree to 40 degree.Discuss for example, pip 90 falls within the region of reflecting surface 250B reception reflecting layer 40B reflection ray, pip 90 has section 900 in reflecting surface 250B, and included angle is section 900 and the angle of the parallel surface 120C institute clamping of central exiting surface 120, and wherein φ is better between 30 degree to 40 degree.
According to another specific embodiment of the present invention, a kind of light supply apparatus is provided, use the structure of above-mentioned light source changing device.Please refer to Fig. 7 A and Fig. 7 B, the embodiment schematic diagram that wherein Fig. 7 A is light supply apparatus of the present invention, Fig. 7 B is that light is in the light path schematic diagram of the light supply apparatus of Fig. 7 A.As shown in Figure 7 A, light supply apparatus 2 comprises light source changing device 1 and light source 50, and wherein light source 50 arranges towards central incidence surface 110.
In this embodiment, light source 50 has light-emitting area 500, and light-emitting area 500 is positioned at optical channel 200.Light 60,70A and the 70B of light source 50 penetrates and advances in entering optical channel 200 in light-emitting area 500.In addition, as shown in Figure 7 A, the angle between the mid point 300A of light-emitting area 500 and the line 301 of central incidence surface 110 ends and the parallel surface 120A of central exiting surface 120 is between 45 degree to 50 degree.In other words, light supply apparatus 2, by the scope of adjusting angle, is controlled central incidence surface 110 and is received the light angle of light 60, and then adjusts light 60 in refraction angle and the direct of travel of central incidence surface 110.
In this embodiment, reflecting surface 250A has echo area A and echo area B, and wherein the curvature of echo area A equals the curvature of echo area B.In other embodiments, the curvature of echo area A is greater than the curvature of echo area B, makes light 70A after echo area A reflection, and the light after its reflection can also reach and approach vertically to go out direction of light at flank exiting surface 222A.
It should be noted that light supply apparatus 2 can prevent that light from producing the optical phenomenon that overflows.As shown in Figure 7 B, too do not depart from the vertical direction of light-emitting area 500 in the light of flank exiting surface 222A and 222B ejaculation.In other words, the reflecting surface 250A of flank block 20A and 20B and 250B can restrain the lighting angle of emergent ray, and wherein the scope of lighting angle is about 30 degree, but not as limit.
Please refer to Fig. 8, another embodiment schematic diagram that Fig. 8 is light supply apparatus of the present invention.As shown in Figure 8, light supply apparatus 2A comprises light source changing device 1B, and wherein light source changing device 1B has central incidence surface 110B.In this embodiment, the evagination curvature that central incidence surface 110B approaches middle body is greater than the evagination curvature that approaches two end portions.In other words, central incidence surface 110B is greater than two ends by ectocentral curvature.
As shown in Figure 8, the part light 60 that light source 50 produces enters centerablock 10 and arrives at central exiting surface 120 through central incidence surface 110B; 60 of part light are respectively through flank incidence surface 211A and 211B approaching side pterion piece 20A and 20B, then after reflecting surface 250A and 250B reflection, arrive at flank exiting surface 222A and 222B respectively.
In addition, part light 60 is advanced toward central incidence surface 110B with the angle that approaches forward, therefore can penetrate refraction to enter centerablock 10 in central incidence surface 110.60 of all the other light are advanced toward the two ends of central incidence surface 110B with oblique angle, those light 60 are in the better generation total reflection in the two ends of central incidence surface 110B, and the light 60 after reflection penetrates respectively flank incidence surface 211A and 211B with approaching side pterion piece 20A and 20B, all the other light 60 of approaching side pterion piece 20A and 20B produce reflection respectively at reflecting surface 250A and reflecting surface 250B, and respectively at flank exiting surface 222A and 222B outgoing.
In this embodiment, light supply apparatus 2A uses the middle body of central incidence surface 110B to produce transmitted ray, and produces total reflection light in the two ends of central incidence surface 110B.In other words, light supply apparatus 2A, by central incidence surface 110B refraction and reflection ray 60, can change light going direction, and good light distribution effect is provided.
Please refer to Fig. 9, another embodiment schematic diagram that Fig. 9 is light supply apparatus of the present invention.As shown in Figure 9, the light source changing device 1A of light supply apparatus 2B uses the light source changing device 1A of Fig. 6 embodiment.It should be noted that, light 60A is the light near the centre of central incidence surface 110A, and light 70C and 70D are the light near the two ends of central incidence surface 110A.In this embodiment, the middle body (incidence surface 111A) that the light 60A that light source 50 produces exposes to the open air through reflecting layer 40A and 40B and enter centerablock 10A, part light (light 70C and 70D) reflects through flank incidence surface 211A and 211B approaching side pterion piece 20A and 20B via reflecting layer 40A and 40B respectively.
With respect to the light supply apparatus 2A of Fig. 8, light supply apparatus 2B uses reflecting layer 40A and 40B, effectively strengthens the reflecting effect at central incidence surface 110A two ends, significantly improves the light quantity of both sides light 70C and 70D, and then uniform bright dipping performance is provided.It should be noted that reflecting layer 40A and 40B contain the more than 60% of the central incidence surface 110A gross area, can reduce the amount of light of centerablock 10A.
According to another specific embodiment of the present invention, a kind of backlight module is provided, comprise above-mentioned light supply apparatus and LGP.
Please refer to Figure 10 A and Figure 10 B, the embodiment top view that wherein Figure 10 A is backlight module of the present invention, the embodiment side view that Figure 10 B is backlight module of the present invention.As shown in Figure 10 A, backlight module 3 comprises LGP 4 and light supply apparatus 2, and wherein LGP 4 has light inlet end face 400.In addition the central exiting surface 120 of light supply apparatus 2 and flank exiting surface 222A and 222B contact light inlet end face 400.In actual conditions, light source 50 penetrate light with enter light source changing device 1 and in central exiting surface 120 and flank exiting surface 222A and 222B bright dipping to enter LGP 4.As shown in Figure 10 B, the height H of central exiting surface 120 and flank exiting surface 222A and 222B is not more than light inlet end face.Separately, in different embodiment, light source changing device 1 also can be one-body molded with LGP 4, and now central exiting surface 120 and flank exiting surface 222A and 222B do not exist in entity mode, and are only virtual interface.
Compared to prior art, make part light enter centerablock 10 according to light source changing device 1, all the other light approaching side pterion piece 20A and 20B, and light can be evenly in central exiting surface 120 and flank exiting surface 222A and 222B outgoing.It should be noted that the curvature of the central incidence surface 110 of capable of regulating of the present invention is to adjust refraction and the reflection case of light, and then change light path and lighting angle.In addition, light source changing device 1 of the present invention can be applicable to the display unit of transparent display or other types, there is no specific restriction.
In actual conditions, light supply apparatus 2 can effectively improve excessive optical phenomenon, and the lighting angle of controlling emergent ray is less than 30 degree.In addition, the both sides (reflecting layer 40A and 40B) that the light supply apparatus 2B of Fig. 9 also sees through central exiting surface 110A are used reflecting material, make the light reflection of both sides to flank block 20A and 20B, more reach effect of uniform distribution light.In this embodiment, approximately there is 40% light to enter centerablock 10A, and have respectively 30% light approaching side pterion piece 20A and 20B.In other words, light supply apparatus 2B has the effect that prevents excessive optical phenomenon and avoid fiber-loss (low lumen phenomenon) simultaneously.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (26)
1. a light source changing device, is formed as transparent tabularly, it is characterized in that, comprises:
One centerablock, has a relative central incidence surface and a central exiting surface; And
At least one flank block, is connected in this centerablock and is positioned at least one side of this central authorities' incidence surface and this central authorities' exiting surface end; Wherein, this flank block is formed as flat board, and there is a wide end and a narrow end, the end face of this wide end is formed as a flank exiting surface and extends from this central authorities' exiting surface, and this narrow distal process is for outside this central authorities' incidence surface and in the one end that has a flank incidence surface towards the inner side of this central authorities' incidence surface and be connected in this central authorities' incidence surface;
Wherein, this flank block is formed with a reflecting surface in a side of this centerablock dorsad and extends to this wide end from this narrow end, this reflecting surface in the time more approaching this wide end more away from this centerablock.
2. light source changing device as claimed in claim 1, it is characterized in that, this flank block is arranged at this centerablock and is positioned at this centerablock the relative both sides that are positioned at this central authorities' incidence surface and these central authorities' exiting surface two ends in pairs, this reflecting surface that this paired flank block has respectively toward each other, and more outwards opens while more approaching this flank exiting surface.
3. light source changing device as claimed in claim 2, is characterized in that, this flank incidence surface that this paired flank block has respectively presss from both sides into one and enters optical channel, and this bottom that enters optical channel is this central authorities' incidence surface.
4. light source changing device as claimed in claim 3, is characterized in that, this enters optical channel and is formed with an opening in relative two these narrow end places, and the angle between line and this central authorities' exiting surface of this opening mid point and this central authorities' incidence surface end is between 45 degree to 50 degree.
5. light source changing device as claimed in claim 1, is characterized in that, this reflecting surface is evagination curved surface.
6. light source changing device as claimed in claim 5, is characterized in that, this reflecting surface is in the time more approaching this flank exiting surface, and curvature is larger.
7. light source changing device as claimed in claim 1, is characterized in that, this central authorities' incidence surface is formed as an evagination curved surface.
8. light source changing device as claimed in claim 7, is characterized in that, the curvature that this central authorities' incidence surface approaches middle body is greater than the curvature that approaches two end portions.
9. light source changing device as claimed in claim 7, is characterized in that, further comprises a reflecting layer and is covered in the part of this central authorities' incidence surface near two ends, and expose this central authorities' incidence surface by ectocentral part.
10. light source changing device as claimed in claim 9, is characterized in that, the curvature of the middle body that this central authorities' incidence surface exposes to the open air for this reflecting layer is greater than the curvature of this cover part, reflecting layer.
11. light source changing devices as claimed in claim 9, is characterized in that, the area that this central authorities' incidence surface is this cover part, reflecting layer accounts for 60% to 80% of this central authorities' incidence surface total surface area.
12. light source changing devices as claimed in claim 9, is characterized in that, the angle between this reflecting layer and this central authorities' exiting surface is between 30 degree to 45 degree.
13. light source changing devices as claimed in claim 12, is characterized in that, this reflecting surface receives angle between part and this central authorities' exiting surface of this reflective layer reflects light between 30 degree to 40 degree.
14. 1 kinds of light supply apparatuses, is characterized in that, comprise:
One light source changing device, is formed as transparent tabularly, comprises:
One centerablock, has a relative central incidence surface and a central exiting surface; And
At least one flank block, is connected in this centerablock and is positioned at least one side of this central authorities' incidence surface and this central authorities' exiting surface end; Wherein, one end of this flank block has a flank exiting surface extends from this central authorities' exiting surface, and the other end protrudes from outside this central authorities' incidence surface and in the one end that has a flank incidence surface towards the inner side of this central authorities' incidence surface and be connected in this central authorities' incidence surface; Wherein, this flank block in a side of this centerablock be dorsad formed with a reflecting surface in the time more approaching this flank exiting surface more away from this centerablock; And
One light source, arranges towards this central authorities' incidence surface; Wherein, the part light that this light source produces enters this centerablock and arrives at this central authorities' exiting surface through this central authorities' incidence surface; Part light enters this flank block through this flank incidence surface, then arrives at this flank exiting surface after this reflecting surface reflection.
15. light supply apparatuses as claimed in claim 14, is characterized in that, this flank block is arranged at this centerablock and is positioned at this centerablock the relative both sides that are positioned at this central authorities' incidence surface and these central authorities' exiting surface two ends in pairs; This flank incidence surface that this paired flank block has respectively presss from both sides into one and enters optical channel, and this bottom that enters optical channel is this central authorities' incidence surface, and this light source has a light-emitting area, and this light-emitting area is positioned at this and enters optical channel.
16. light supply apparatuses as claimed in claim 15, is characterized in that, the angle between line and this central authorities' exiting surface of this light-emitting area mid point and this central authorities' incidence surface end is between 45 degree to 50 degree.
17. light supply apparatuses as claimed in claim 14, is characterized in that, this reflecting surface is evagination curved surface.
18. light supply apparatuses as claimed in claim 17, is characterized in that, this reflecting surface is in the time more approaching this flank exiting surface, and curvature is larger.
19. light supply apparatuses as claimed in claim 14, is characterized in that, the part light that this light source produces produces a light harvesting effect after this central authorities' incidence surface.
20. light supply apparatuses as claimed in claim 19, is characterized in that, the evagination curvature that this central authorities' incidence surface approaches middle body is greater than the evagination curvature that approaches two end portions.
21. light supply apparatuses as claimed in claim 19, is characterized in that, further comprise a reflecting layer and are covered in the part of this central authorities' incidence surface near two ends, and expose this central authorities' incidence surface by ectocentral part; Wherein, the part light that this light source produces passes through the middle body exposing to the open air in this reflecting layer and enters this centerablock, and part light enters this flank block via this reflective layer reflects through this flank incidence surface.
22. light supply apparatuses as claimed in claim 21, is characterized in that, the evagination curvature of the middle body that this central authorities' incidence surface exposes to the open air for this reflecting layer is greater than the evagination curvature of this cover part, reflecting layer.
23. light supply apparatuses as claimed in claim 21, is characterized in that, the area that this central authorities' incidence surface is this cover part, reflecting layer accounts for 60% to 80% of this central authorities' incidence surface total surface area.
24. light supply apparatuses as claimed in claim 21, is characterized in that, the angle between this reflecting layer and this central authorities' exiting surface is between 30 degree to 45 degree.
25. light supply apparatuses as claimed in claim 24, is characterized in that, this reflecting surface receives angle between part and this central authorities' exiting surface of this reflective layer reflects light between 30 degree to 40 degree.
26. 1 kinds of backlight modules, is characterized in that, comprise:
One LGP, has a light inlet end face; And
At least one light supply apparatus as described in any one in claim 14 to 25, wherein this central authorities' exiting surface and this flank exiting surface contact this light inlet end face, and the height of this central authorities' exiting surface and this flank exiting surface is not more than this light inlet end face.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103114213A TWI537649B (en) | 2014-04-18 | 2014-04-18 | Light source modulation device, light source device, and backlight module |
| TW103114213 | 2014-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104075252A true CN104075252A (en) | 2014-10-01 |
Family
ID=51596711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410298823.7A Pending CN104075252A (en) | 2014-04-18 | 2014-06-27 | Light source modulation device, light source device and backlight module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104075252A (en) |
| TW (1) | TWI537649B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007088377A (en) * | 2005-09-26 | 2007-04-05 | Stanley Electric Co Ltd | Lighting system |
| TW200928221A (en) * | 2007-12-21 | 2009-07-01 | Hon Hai Prec Ind Co Ltd | Illumination system |
| CN203052525U (en) * | 2012-12-26 | 2013-07-10 | 山东华泰光源有限公司 | Multi-surface free-form surface optical lens applied to light emitting diode (LED) light source |
| CN203215562U (en) * | 2013-04-07 | 2013-09-25 | 湖南福安工业有限公司 | Optical lens of strip-shaped light type lamp |
-
2014
- 2014-04-18 TW TW103114213A patent/TWI537649B/en not_active IP Right Cessation
- 2014-06-27 CN CN201410298823.7A patent/CN104075252A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007088377A (en) * | 2005-09-26 | 2007-04-05 | Stanley Electric Co Ltd | Lighting system |
| TW200928221A (en) * | 2007-12-21 | 2009-07-01 | Hon Hai Prec Ind Co Ltd | Illumination system |
| CN203052525U (en) * | 2012-12-26 | 2013-07-10 | 山东华泰光源有限公司 | Multi-surface free-form surface optical lens applied to light emitting diode (LED) light source |
| CN203215562U (en) * | 2013-04-07 | 2013-09-25 | 湖南福安工业有限公司 | Optical lens of strip-shaped light type lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201541156A (en) | 2015-11-01 |
| TWI537649B (en) | 2016-06-11 |
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Application publication date: 20141001 |