CN103591552B - A kind of LGP and lighting device - Google Patents
A kind of LGP and lighting device Download PDFInfo
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- CN103591552B CN103591552B CN201310216223.7A CN201310216223A CN103591552B CN 103591552 B CN103591552 B CN 103591552B CN 201310216223 A CN201310216223 A CN 201310216223A CN 103591552 B CN103591552 B CN 103591552B
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- lgp
- incidence surface
- joint face
- fillet
- exiting
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Abstract
The embodiment of the invention discloses a kind of LGP, comprise exiting surface, two that an incidence surface, is interval in this incidence surface and lay respectively at the first fillet of the boundary of this incidence surface and this two joint face and second fillet at the two ends of two these 2 first fillets of connection from two opposition sides of this exiting surface toward the tilt joint face, two that extends in opposite directions of the direction of this incidence surface respectively. The angle of total reflection that definition θ T is this LGP, θ is the extension angle of this two joint face, and L is the distance between this incidence surface and exiting surface, and A is the length of each the second fillet, and θ < θT, and L> (A/2)/(tan θT). The parameter designing that sees through this LGP, allows the light that light source distributes can allow the scope of light field dwindle by this LGP, reaches the effect of concentrating light. The present invention also provides a kind of lighting device that uses this LGP.
Description
Technical field
The invention relates to a kind of optical module and optical module, refer to especially a kind of LGP and lighting device.
Background technology
In general exhibition, if need to throw light on for microscler or large-scale display area, conventionally can make simultaneouslyWith microscler fluorescent lamp, or use many round lamps, so that bright and clear, but use fluorescent lamp easily has light too to disperseThe problem of luminance shortage, and use multi-lamp tool easily to have subregion illumination zone overlapping and subregion luminance shortageProblem, and the setting of multi-lamp tool also can cause cost to increase.
Consult Fig. 1, in order to address the above problem, the open case of WO2012/145293 discloses a kind of lighting device 1, comprises oneLGP 11, one is arranged at the light emitting source 12 of the light inlet side of this LGP 11, and a bright dipping side that is arranged at this LGP 11Convergence assembly 13(bandingreductionelement), this light emitting source 12 has multiple spaced light emitting diodes121. See through the setting of this LGP 11, after the equalizing light rays that the spot light of described light emitting diode 121 is distributed, thenAllow light through this convergence assembly 13, just can reach as shown in Figure 2, make way for the range of exposures of below and dwindle to reach concentrated lightThe effect of line. But above-mentioned design need arrange this convergence assembly 13 in addition, cannot simplify component count and production process.
Summary of the invention
Therefore, the present invention's object, does not need extra optical module can produce comparatively concentrated light providing a kind ofThe LGP of field.
So LGP of the present invention, comprises exiting surface, two that an incidence surface, is interval in this incidence surface respectively by this bright dippingTwo opposition sides of face lay respectively at this incidence surface and two are connected with this toward the tilt joint face, two that extends in opposite directions of the direction of this incidence surfaceThe first fillet of the boundary of face, and second fillet at the two ends of two these 2 first fillets of connection, and the face of this exiting surfaceThe long-pending area that is greater than this incidence surface. Wherein, definition θTFor the angle of total reflection of this LGP, θ is the extension angle of this two joint face,L is the distance between this incidence surface and exiting surface, and A is the length of each the second fillet, and θ < θT, and L > (A/2)/(tanθT）。
Another object of the present invention, is providing a kind of lighting device that coordinates aforementioned LGP to use.
So lighting device of the present invention, comprises a light source, and one in order to receive the LGP of light of this light source. This leaded lightPlate comprises exiting surface, two that an incidence surface, is interval in this incidence surface respectively from two opposition sides of this exiting surface toward this incidence surfaceThe direction joint face, two extending in opposite directions that tilts lay respectively at the first fillet of the boundary of this incidence surface and this two joint face,And second fillet at the two ends of two these 2 first fillets of connection, and the area of this exiting surface is greater than the area of this incidence surface.Wherein, definition θTFor the angle of total reflection of this LGP, θ is the extension angle of this two joint face, L be this incidence surface and exiting surface itBetween distance, A is the length of each the second fillet, and θ < θT, and L > (A/2)/(tan θT）。
Effect of the present invention is: see through the parameter designing of this LGP, the light that allows this light source distribute is led by thisAfter tabula rasa, do not need to arrange in addition again convergence assembly, can allow the scope of light field dwindle, reach the effect of concentrating light.
Brief description of the drawings
The feature of other of the present invention and effect will clearly present in the graphic embodiment of reference, wherein:
Fig. 1 is a stereogram, and the open disclosed lighting device of case of WO2012/145293 is described;
Fig. 2 is a side view, and the use aspect of this lighting device is described;
Fig. 3 is a stereogram, and the preferred embodiment of one of lighting device of the present invention is described, comprises a light source and a LGP;
Fig. 4 is a side view, and aid illustration Fig. 3 omits for convenience of explanation this light source and do not draw in figure; And
Fig. 5 is a side view, and the another kind of form of this LGP is described.
Wherein, in Fig. 1 to Fig. 5:
2----lighting device 224----the first fillet
21----light source 225----the second fillet
211----light emitting diode 226----tilting section
22----LGP 227----flat segments
221----incidence surface A----length
222----exiting surface L----distance
223----joint face θ----extension angle
Detailed description of the invention
Consult Fig. 3, the preferred embodiment of lighting device 2 of the present invention, comprises a light source 21, and one in order to receive this light source 21The LGP 22 of light. In the present embodiment, this light source 21 comprises multiple spaced light emitting diodes 211, but not withThis is limited.
Consult Fig. 3,4, omit for convenience of explanation this light source and do not draw in Fig. 4, this LGP 22 comprises an incidence surface221, an exiting surface 222, two that is interval in this incidence surface 221 is respectively from two opposition sides of this exiting surface 222 toward this incidence surfaceThe tilt joint face 223, two that extends in opposite directions of 221 direction lays respectively at the boundary of this incidence surface 221 and this two joint face 223The first fillet 224, and second fillet 225 at the two ends of two these 2 first fillets 224 of connection, and this exiting surface 222Area is greater than the area of this incidence surface 221.
Wherein, this incidence surface 221 is parallel with this exiting surface 222, and each joint face 223 has one and is connected in this bright dippingThe tilting section 226 of face 222, and a flat segments 227 that connects this tilting section 226 and incidence surface 221, this two joint face 223 flatStraight section 227 is parallel to each other, and definition θ is the extension angle of this two joint face 223, θTFor the angle of total reflection of this LGP 22, L isDistance between this incidence surface 221 and exiting surface 222, A is the length of each the second fillet 225, and θ < θT, and L > (A/2）/（tanθT). θ and L are all the parameters for controlling rising angle (angleofbeam). The light distributing when this light source 21After line is entered by the incidence surface 221 of this LGP 22, light can continue to carry out total reflection between this two joint face 223, and byThese exiting surface 222 bright dippings.
The present invention utilizes two kinds of different materials to make this LGP 22, one be Merlon (Polycarbonate,PC), another kind is polymethyl methacrylate (Polymethylmethacrylate, PMMA), tests rear acquisition as followsThe result of the test that page table one is contained.
Because the Parameter Conditions of this LGP 22 need meet θ < θT, and L > (A/2)/(tan θT), and by (1), (2) groupResult of the test, even if two groups all meet L > (A/2)/(tan θT) condition (30mm > 2.2mm), but (2) group is notMeet θ < θTCondition under (θ is 45 ° and is greater than 42.16 ° of the angles of total reflection), its rising angle is 120 °, cannot dwindle rising angleTo present the effect of light harvesting. And (1) group meets θ < θ simultaneouslyTCondition (θ is 18 ° and is less than 42.16 ° of the angles of total reflection), it goes outOptic angle degree is 30 °, and can present the effect of light harvesting. Again by (3), the result of the test of (4) group, due to two groups of symbols not allClose L > (A/2)/(tan θT) condition (2mm < 2.2mm), even if therefore (3) group meets θ < θTCondition, its rising angleStill cannot present the effect of light harvesting. And (5)～(8) group data also obtain identical result of the test. Hence one can see that, this leaded lightPlate 22 must meet θ < θ simultaneouslyTAnd L > (A/2)/(tan θT) two Parameter Conditions, just can reach the effect of light harvesting.
Table one
Consult again Fig. 3, be noted that the design of this flat segments 227, can reach and be convenient to this light source 21 to gripEffect on this LGP 22. But when actual enforcement, can be also as shown in Figure 5, make this joint face 223 only have this tilting section226 design, and allow this LGP 22 present another kind of form, this light source 21(is shown in Fig. 3) be to consolidate with cemented or alternate mannerOn this LGP 22. Carry out afore-mentioned test with the LGP 22 shown in Fig. 5, can obtain equally the examination contained similar in appearance to table oneTest result.
In sum, lighting device 2 of the present invention sees through the parameter designing of this LGP 22, the light that allows this light source 21 distributeLine, by after this LGP 22, does not need to arrange in addition convergence assembly 13 as shown in Figure 1 again, can allow the range of exposures of lightDwindle, reach the effect of concentrating light, therefore really can reach the present invention's object.
Only as described above, be only the present invention's preferred embodiment, when not limiting with this model of the invention processEnclose, the simple equivalence of generally being done according to the present patent application the scope of the claims and patent specification content changes and modifies, all stillBe covered by the present invention within the scope of the patent.
Claims (6)
1. a LGP, is characterized in that, comprises:
One incidence surface;
One exiting surface, is interval in this incidence surface, and the area of this exiting surface is greater than the area of this incidence surface;
Two joint faces that extended in opposite directions toward the direction inclination of this incidence surface from two opposition sides of this exiting surface respectively;
Two lay respectively at the first fillet of the boundary of this incidence surface and this two joint face; And
Two connect second fillet at the two ends of these 2 first fillets;
Wherein, the angle of total reflection that definition θ T is this LGP, θ is the extension angle of this two joint face, L is this incidence surface and bright dippingDistance between face, A is the length of each the second fillet, and θ < θT, and L > (A/2)/(tan θT)。
2. LGP as claimed in claim 1, is characterized in that, this incidence surface is parallel with this exiting surface.
3. LGP as claimed in claim 1, is characterized in that, each joint face has an inclination that is connected in this exiting surfaceSection, and the flat segments of this tilting section of connection and incidence surface, the flat segments of this two joint face is parallel to each other.
4. a lighting device, comprises: a light source, and one in order to receive the LGP of light of this light source, it is characterized in that, shouldLGP comprises:
One incidence surface;
One exiting surface, is interval in this incidence surface, and the area of this exiting surface is greater than the area of this incidence surface;
Two joint faces that extended in opposite directions toward the direction inclination of this incidence surface from two opposition sides of this exiting surface respectively;
Two lay respectively at the first fillet of the boundary of this incidence surface and this two joint face; And
Two connect second fillet at the two ends of these 2 first fillets;
Wherein, definition θ is the extension angle of this two joint face, θTFor the angle of total reflection of this LGP, L is this incidence surface and bright dippingDistance between face, A is the length of each the second fillet, and θ < θT, and L > (A/2)/(tan θT)。
5. lighting device as claimed in claim 4, is characterized in that, the incidence surface of this LGP is parallel with exiting surface.
6. lighting device as claimed in claim 4, is characterized in that, each joint face of this LGP has one and is connected in thisThe tilting section of exiting surface, and the flat segments of this tilting section of connection and incidence surface, the flat segments of this two joint face is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216223.7A CN103591552B (en) | 2013-06-03 | 2013-06-03 | A kind of LGP and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216223.7A CN103591552B (en) | 2013-06-03 | 2013-06-03 | A kind of LGP and lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103591552A CN103591552A (en) | 2014-02-19 |
| CN103591552B true CN103591552B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310216223.7A Expired - Fee Related CN103591552B (en) | 2013-06-03 | 2013-06-03 | A kind of LGP and lighting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103591552B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0881514A1 (en) * | 1997-05-30 | 1998-12-02 | Lasag Ag | Optical coupling element for spatial confinement and homogenisation of a wide-angle beam |
| CN202523757U (en) * | 2011-12-30 | 2012-11-07 | 瑞仪光电股份有限公司 | Light emitting diode element |
| TW201303222A (en) * | 2011-04-20 | 2013-01-16 | Rambus Inc | Lighting assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004071409A (en) * | 2002-08-07 | 2004-03-04 | Denso Corp | Vehicular lighting fixture and light distribution control method for same |
| JP5108814B2 (en) * | 2009-03-26 | 2012-12-26 | ライツ・アドバンスト・テクノロジー株式会社 | Condensing optical element |
| US20100284201A1 (en) * | 2009-05-06 | 2010-11-11 | Upstream Engineering Oy | Illuminator using non-uniform light sources |
| WO2012083957A1 (en) * | 2010-12-23 | 2012-06-28 | Martin Professional A/S | Optical light mixer providing a homogenized and uniform light beam |
-
2013
- 2013-06-03 CN CN201310216223.7A patent/CN103591552B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0881514A1 (en) * | 1997-05-30 | 1998-12-02 | Lasag Ag | Optical coupling element for spatial confinement and homogenisation of a wide-angle beam |
| TW201303222A (en) * | 2011-04-20 | 2013-01-16 | Rambus Inc | Lighting assembly |
| CN202523757U (en) * | 2011-12-30 | 2012-11-07 | 瑞仪光电股份有限公司 | Light emitting diode element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103591552A (en) | 2014-02-19 |
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