CN102563523A - Condensing lens module, lighting device, projection device and display device - Google Patents
Condensing lens module, lighting device, projection device and display device Download PDFInfo
- Publication number
- CN102563523A CN102563523A CN2011100070829A CN201110007082A CN102563523A CN 102563523 A CN102563523 A CN 102563523A CN 2011100070829 A CN2011100070829 A CN 2011100070829A CN 201110007082 A CN201110007082 A CN 201110007082A CN 102563523 A CN102563523 A CN 102563523A
- Authority
- CN
- China
- Prior art keywords
- collector lens
- light
- lighting device
- lens
- light beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 123
- 239000000463 material Substances 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 230000005499 meniscus Effects 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 27
- 238000009826 distribution Methods 0.000 description 12
- 238000009792 diffusion process Methods 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Landscapes
- Projection Apparatus (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The embodiment of the invention discloses a condensing lens module, an illuminating device, a projecting device and a display device; the condenser lens module is used for condensing divergent light beams emitted by a Light Emitting Diode (LED) chip, and passes through a biconvex first condenser lens and a crescent second condenser lens, wherein the concave surface and the convex surface of the second condenser lens are formed by spherical or aspheric optical surfaces with the same curvature radius; the illuminating device consists of the condensing lens module and a divergent light source, and can effectively condense and project light beams emitted by the divergent light source to a target object; the projector uses the illumination device to form a projector; the display device uses the illumination device to form a backlight module, which is mainly applied to display devices.
Description
Technical field
The present invention relates to a kind of collector lens module, lighting device, projection arrangement and display unit, the collector lens module of particularly being made up of two optical concentration lens can be applicable on lighting device, projection arrangement or the display unit.
Background technology
(light emitting diode LED) has advantages such as volume is little, the life-span long, heat radiation is good to light-emittingdiode, and extensively model is applied to various fields now, for example projector and display unit or the like.Only; The light beam that light-emittingdiode (LED) sends is spot light, brightness irregularities, to have bigger dispersion angle and send light beam be the characteristic of dispersing; Therefore, if during, and use the optical lens of prior art as the light source of illumination, projector or other devices; The light beam of catching maximum be can't mend with causing, the luminous intensity deficiency of projection and the uneven problem of photometric distribution of projection surface caused.For overcoming above-mentioned shortcoming, how to assemble effectively that light beam that light-emittingdiode (LED) sent is existing to carry out multinomial research.
Fig. 1 is projection arrangement 51 structural representations of light source for the prior art light-emittingdiode.Projection arrangement 51 comprises light-emittingdiode 511, collector lens 512, polar biased photoconverter (PS-converter) 513, optical splitter (beam splitter) 514, light valve (light valve) 515 etc.Light-emittingdiode 511 emitted light beams get into polar biased photoconverter 513, then get into optical splitter 514 and light valve 515 in regular turn.In order to obtain the projection image of high brightness, the past all in 513 of light-emittingdiode 511 and polar biased photoconverters, is provided with a collector lens 512, in order to assemble light-emittingdiode 511 emitted light beams, reduces the light beam loss.
Fig. 2 is that the polar biased photoconverter 513 of the existing projection arrangement 51 of Fig. 1 receives light-emittingdiode 511 emitted light beams; Illuminance figure in polar biased photoconverter 513 each position; Wherein abscissa representes that with polar biased photoconverter 513 centers be datum mark; (unit: mm), ordinate is the illuminance size (unit: Lux) of each position along the distance of its X and Y direction.Among Fig. 2, on X, each position of Y axle, record the illuminance size of polar biased photoconverter 513, major part is all in 300, and below the 000Lux, only the part position is 300, more than the 000Lux; And X, each locational light of Y axle distribute and are inhomogeneous.
Though this existing projection arrangement 51 is provided with collector lens 512, this collector lens 512 only can be assembled the light beam near the optical axis place, and the light beam at collector lens 512 edges still can deviation and can't be assembled.Moreover this collector lens 512 is for optically focused, and the optical surface curvature of its right flank needs very big, causes in the model process, to be difficult for making this collector lens 512.
Fig. 3 is another kind of conventional device, is projection arrangement 52 another structural representations of light source with light-emittingdiode 521.As shown in Figure 3, projection arrangement 52 is set up the equal optical lens 526 of a slice in 523 of collector lens 522 and polar biased photoconverters; This equal optical lens 526 has the function of the beam collimation of making, and makes the light beam that gets into polar biased photoconverter 523 more even for having the lens of small curve, non-uniform thickness.So can improve the uneven problem of projection arrangement 51 light beams of Fig. 1, its effect can be referring to Fig. 4.
On the prior art in Fig. 3; With light-emittingdiode 521 is the projection arrangement 52 of light source; Though increased equal optical lens 526, improved the uniformity that gets into polar biased photoconverter 523 light beams, these equal optical lens 526 no light-focusing functions; The brightness of projection arrangement 52 cause collector lens 522 light beam on every side to be assembled, so still can't promote by equal optical lens 526.
Except projection arrangement, various to disperse the electronic installation that light source is a light source, for example lighting device or display unit etc. also all have above-mentioned same problem.So in order to address these problems, the present invention promptly provides a kind of both can promote brightness, and all collector lens modules of light function are also arranged, and improved above-mentioned existing problem, to be applied to lighting device, projection arrangement and display unit.
Summary of the invention
Embodiments of the invention provide a kind of optical lens module, lighting device, projection arrangement and display unit; Can solve the existing light source emitted light beams of dispersing can't fill and part be utilized the problem that causes projection arrangement, lighting device or display unit brightness to promote.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of collector lens module is used for assembling and evenly dispersing light source institute emitted light beams, comprises: first collector lens and second collector lens; Wherein, said first collector lens has in order to assemble the positive diopter of said light beam; Said second collector lens; For having the meniscus lens on a nonreentrant surface and a recessed surface; Said nonreentrant surface is towards said first collector lens, and said second collector lens will be assembled and evenly is projeced into outside the said recessed surface from the light beam that said first collector lens is assembled, and satisfy Δ t 3%; Wherein, Δ t is the difference percentage of any point thickness t of said second collector lens; T be the normal of the said second collector lens nonreentrant surface any point go up along the line and said recessed surface between thickness.
Further, the same form in the satisfied following formula of said second collector lens or many formulas: 2.5R 9,2R/t 9,0.15Nd/R 0.6,0.55R/D 1.1; Wherein, R is the nonreentrant surface of said second collector lens and the radius of curvature on recessed surface; Unit is the refractive index of said second collector lens, the effective vent diameter on recessed surface that D is said second collector lens for millimeter, Nd; Unit for millimeter, t be the normal of the said second collector lens nonreentrant surface any point go up along the line with recessed surface between thickness, unit is millimeter.
Further, the said light source of dispersing is a light-emittingdiode.
Further, said second collector lens is that glass or plastic cement material are processed.
Further, the nonreentrant surface of said second collector lens or recessed surface are sphere or aspheric surface.
Further, said first collector lens has a convex surface, and towards said second collector lens, and said convex surface is a sphere.
Further, said first collector lens is a lenticular lens.
A kind of lighting device in order to the emissive lighting light beam, comprising: in order to the light source of dispersing of emission light beam; And the collector lens module, constitute by above-mentioned collector lens module, be used for assembling and the even said light source institute emitted light beams of dispersing.
A kind of projection arrangement comprises lighting device, optical splitter, light valve and projection lens, and said lighting device is made up of above-mentioned lighting device, in order to the emissive lighting light beam; Said optical splitter in order to receiving the illuminating bundle that said lighting device sends, and carries out beam split with said illuminating bundle; Said light valve, in order to the illuminating bundle of reception from said optical splitter, and the generation image strip exposes to said projection lens; Said projection lens is in order to receive said image strip and to produce projection image.
A kind of display unit comprises module backlight, and said module backlight comprises: lighting device and light disperser; Wherein, said lighting device is made up of above-mentioned lighting device, in order to the emissive lighting light beam; Said smooth disperser in order to receiving the illuminating bundle that said lighting device sends, and evenly spreads said illuminating bundle.
A kind of collector lens module can be used for dispersing light source, and to assemble and evenly to disperse light source institute emitted light beams, this disperses light source is illuminating source with the light-emittingdiode for example, but not as limit; The collector lens module includes first collector lens and second collector lens; Wherein, First collector lens can be lenticular lens or difform lens, and first collector lens is arranged at the light beam light incident side, has the first optical surface R1 and the second optical surface R2; Be positive diopter, disperse the light source emitted light beams to assemble this by the first optical surface R1 and the second optical surface R2; Second collector lens is the meniscus lens; Have the 3rd optical surface R 3 of nonreentrant surface and the 4th optical surface R4 on recessed surface; This nonreentrant surface (the 3rd optical surface R3) is identical with the radius of curvature of this recessed surface (the 4th optical surface R4); And this nonreentrant surface is towards this first collector lens, and this second collector lens receives the light beam from this first collector lens, and this light beam is assembled and evenly is projeced into outside this recessed surface (the 4th optical surface R4).
Wherein, The 3rd optical surface R3 is identical with the radius of curvature of the 4th optical surface R4; For having radius of curvature identical and in the fabrication tolerance scope, get into refraction angle effect on the optics of same curvature radius that second lens or second lens pass air to produce by the air gap; Its thickness further satisfies the following relationship formula: Δ t≤3% (1), and wherein, Δ t is the difference percentage of any point thickness t of second collector lens; T be on the normal extensions on the second collector lens nonreentrant surface (the 3rd optical surface R3) any point and the recessed surface of second collector lens (the 4th optical surface R4) between thickness (referring to the 5th figure).
Wherein, The first optical surface R1, the second optical surface R2, the 3rd optical surface R3 and the 4th optical surface R4 system are by spherical optics face and the combination of aspherics face; When being aspheric optical surface for each optical surface, its aspheric surface system is constituted with equation (Aspherical Surface Formula) formula (2):
Wherein, C is an eyeglass curvature; H is the eyeglass height, and K is circular cone coefficient (Conic Constant), A4, A6, A8, A10, A12, A14, the A16 asphericity coefficient (Nth Order Aspherical Coefficient) on four, six, eight, ten, 12,14,16 rank respectively.But the aspheric surface equation does not exceed with (2) formula, and other aspheric surface equation also goes for the present invention.
One or more during second collector lens can meet the following conditions: 2.5≤R≤9 (3); 2≤R/t≤9 (4); 0.15≤Nd/R≤0.6 (5); 0.55≤R/D≤1.1 (6); Wherein, R for radius of curvature (unit is millimeter), the t of the 3rd optical surface R 3 of this second collector lens and the 4th optical surface R4 be normal that second collector lens the 3rd optical surface R3 goes up any go up along the line with second collector lens the 4th optical surface R4 between thickness (unit is millimeter), Nd for the refractive index of this second collector lens, D for this recessed surface of this second collector lens in the effective vent diameter of emitting side (unit be millimeter).
Another purpose of the present invention is to provide a kind of lighting device, comprises to disperse light source and aforesaid collector lens module, and can solve existing equal optical lens only can collimated light beam, makes light beam even, once more the problem of optically focused; Wherein, this disperses light source can launch light beam, is projected to this collector lens module; The light beam gathering back product illuminating bundle that this collector lens module sends in order to this is dispersed light source, its characteristic as previously mentioned.
Still a further object of the present invention comprises aforesaid lighting device, optical splitter, light valve and projection lens for a kind of projection arrangement is provided, and wherein, this lighting device is projeced into this optical splitter in order to produce illuminating bundle; This optical splitter in order to receive this illuminating bundle, carries out beam split with this illuminating bundle; This light valve, in order to the illuminating bundle of reception from this optical splitter, and the generation image strip exposes to this projection lens; This projection lens is in order to receive this image strip and to produce projection image.
Another object of the present invention comprises module backlight for a kind of display unit is provided, and this module backlight comprises: aforesaid lighting device and light disperser; Wherein, this lighting device is projeced into this light disperser in order to produce illuminating bundle, constitutes the module backlight of display unit.
In sum, collector lens module of the present invention, lighting device, projection arrangement and display unit have following advantage:
(1) collector lens module of the present invention can effectively be assembled the incident divergent beams and evenly is projected to emitting side, makes the light beam of emitting side can homogenising and improve luminous intensity, can improve the not high shortcoming of light beam collection efficiency of prior art.
Further, can be improved by first optical surface R1 of first collector lens of biconvex of the present invention and the radius of curvature of the second optical surface R2, first collector lens that makes glass material is more easily with the manufacturing approach manufacturing of moulded glass.
(2) lighting device of the present invention is for utilizing aforesaid collector lens module; To disperse the light beam that light source sends assembles, evenly; With the raising luminous intensity, and can supply projection arrangement and display unit to use, improve the light intensity distributions inequality or the not high shortcoming of luminous intensity of the lighting device of prior art.
(3) projection arrangement of the present invention is for utilizing aforesaid lighting device, can assemble, evenly dispersing the light beam that light source sends, and to improve luminous intensity, makes projection arrangement produce projection image, can improve the not high shortcoming of luminous intensity of the projection arrangement of prior art.
(4) display unit of the present invention is for utilizing aforesaid lighting device; Can assemble, evenly dispersing the light beam that light source sends; To improve luminous intensity, the brightness of the module backlight of display unit is significantly improved, can improve the not high shortcoming of luminous intensity of the module backlight of prior art.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sketch map of LED Chips for Communication wafer projection module of collector lens and the formation thereof of prior art;
Fig. 2 is the light intensity distributions figure of the collector lens of prior art;
Fig. 3 is the sketch map of LED Chips for Communication wafer projection module of collector lens and the formation thereof of another kind of prior art;
Fig. 4 is the light intensity distributions figure of the collector lens of another kind of prior art;
Fig. 5 is the sketch map of collector lens module of the present invention;
Fig. 6 is the sketch map of lighting device the 5th embodiment of the present invention;
Fig. 7 is the sketch map of projection arrangement the 6th embodiment of the present invention;
Fig. 8 is the sketch map of display unit the 7th embodiment of the present invention;
Fig. 9 is the sketch map of display unit the 8th embodiment of the present invention;
Figure 10 is the collector lens module illuminance of first embodiment and the graph of a relation of position;
Figure 11 is the collector lens module illuminance of second embodiment and the graph of a relation of position;
Figure 12 is the collector lens module illuminance of the 3rd embodiment and the graph of a relation of position;
Figure 13 is the collector lens module illuminance of the 4th embodiment and the graph of a relation of position;
Figure 14 is the collector lens module illuminance of the 5th embodiment and the graph of a relation of position.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.As shown in Figure 5, be the sketch map of collector lens module 11 of the present invention.Collector lens module 11 is used for assembling and evenly disperses the light beam that light source 20 (like LED, Halogen lamp LED, CCFL but for its limit) is launched.Among the figure, collector lens module 11 is made up of first collector lens 111 and 112 of second collector lenses, and first collector lens 111 and second collector lens 112 are arranged on the optical axis Z.
The nonreentrant surface of second collector lens 112 (the 3rd optical surface R3) and this recessed surface (the 4th optical surface R4), easy to make for making, reduce the making of mould, can adopt identical radius of curvature, can satisfy the following formula condition: 2.5 (mm)≤R≤9 (mm) (3); Wherein, R is the radius of curvature (unit is millimeter mm) of the 3rd optical surface R3 and the 4th optical surface R4 of second collector lens 112, and under the fabrication tolerance scope, the 3rd optical surface R3 is close with the radius of curvature of the 4th optical surface R4.
The thickness system of second collector lens 112 is defined by the 3rd optical surface R3 and the 4th optical surface R4, because the 3rd optical surface R3 is identical with the radius of curvature of the 4th optical surface R4, its thickness is homogeneous, can satisfy following formula condition: 2≤R/t≤9 (4); Wherein, R is the radius of curvature (unit for millimeter a mm) of the 3rd optical surface R3 and the 4th optical surface R4 of second collector lens 112, normal that t is the 3rd optical surface R3 any point is gone up along the line with the 4th optical surface R4 between thickness (unit is a millimeter mm).
The material of second collector lens 112 is selected to adopt optics plastic material or optical glass material, but for preferable optical effect to be arranged, can satisfy following formula condition: 0.15≤Nd/R≤0.6 (5); Wherein, R is the refractive index of second collector lens 112 for radius of curvature (unit is millimeter mm), the Nd of the 3rd optical surface R3 and the 4th optical surface R4 of this second collector lens.
The openings of sizes of second collector lens 112 can determine the light beam total amount of throwing, though excessive opening can throw go out the light beam that gets into second collector lens 112 as far as possible, will cause the uneven phenomenon of luminous intensity on the projection surface that throws target; Anti-, too small opening will reduce the effective rate of utilization of light beam; Preferable situation, the opening diameter of second collector lens 112 (unit is a millimeter) D can satisfy following formula condition: 0.55≤R/D≤1.1 (6); Wherein, R is that radius of curvature (unit is millimeter mm), the D of the 3rd optical surface R3 and the 4th optical surface R4 of second collector lens 112 are the effective vent diameter (unit be millimeter mm) of the recessed surface of second collector lens 112 in emitting side.
For making the present invention clear and definite more full and accurate; Enumerate preferred embodiment below, with collector lens module of the present invention 11, use lighting device 2 that this collector lens module 11 constitutes, use the structure of projection arrangement 3 that this lighting device 2 constitutes and display unit 4,5 thereof and technical characterictic details as after.
Embodiment shown in below the embodiment of the invention; Be to collector lens module of the present invention, use lighting device that this collector lens module constitutes, use the structure of projection arrangement that this lighting device constitutes and display unit thereof and explain; Though the embodiment shown in therefore below the embodiment of the invention is applied to a light-emittingdiode to disperse light source; But the light source of dispersing that with the light-emittingdiode is not light emitting source exceeds; Therefore the personage who generally in this field, is familiar with this technology understands; The composed component of the module of collector lens shown in the embodiment of the invention, its lighting device, its projection arrangement and display unit thereof is not restricted to the following example structure that discloses, and just each composed component of this collector lens module, its lighting device, its projection arrangement and display unit thereof can carry out many changes, modification even equivalence change.
< first embodiment >
As shown in Figure 5; The collector lens module 11 of present embodiment is to assemble to reach evenly to disperse the light beam that light source 20 is sent; Dispersing light source 20 is to send light beam after being stimulated with light-emittingdiode, and it sends luminous flux (Luminous power) is example for the light beam with 100 lumens (Lumen).
Second collector lens, 112 optical characteristics and asphericity coefficient such as table one and table two, and satisfy the condition of formula (3)-Shi (6), like table three.
Table one, second collector lens, 112 optical characteristics:
The asphericity coefficient of table two, second collector lens, 112 optical surfaces
*: R3 and R4 are aspheric surface
Table three, satisfy condition
Through the collector lens module 11 that constituted thus, can assemble dispersing the light beam that light source 20 sends, formation center light illumination is about 600, the light beam of 000Lux, its distribution is shown in figure 10.In figure, X and Y are the light beam that collector lens module 11 projects, and are projeced into 19.7 millimeters trunnion axis and vertical axises measurement positions of going up on the object on distance the 4th optical surface R4 central shaft of second collector lens 112.Can know by Figure 10; Can effectively assemble dispersing the light beam that light source 20 sent by the collector lens module 11 of present embodiment; And project the illuminating bundle of even luminous intensity, can be used for lighting device, projection arrangement and display unit etc., and promote the application of the embodiment of the invention.
< second embodiment >
The collector lens module 11 of present embodiment is to assemble to disperse the light beam that light source 20 is sent, use to disperse light source 20 identical with first embodiment, the configuration of first collector lens 111 and second collector lens 112 also is same as first embodiment, repeats no more at this.
Wherein, second collector lens 112 is to use glass material or the plastic material of Nd=1.8 to process, and the 3rd optical surface R3 and the 4th optical surface R4 are sphere.Second collector lens, 112 optical characteristics such as tables four, and satisfy the condition of formula (3)-Shi (6), like table five.
Table four, second collector lens, 112 optical characteristics
Table five, satisfy condition
Through the collector lens module 11 that constituted thus, can light beam that light source 20 sends be assembled and evenly, formation center light illumination is about 530 with dispersing, the light beam of 000Lux, its distribution is shown in figure 11.Can know by Figure 11; Can effectively assemble dispersing the light beam that light source 20 sent by the collector lens module 11 of present embodiment; And project the even luminous intensity of cores, the higher illuminating bundle of cylindrical luminous intensity; Can be used for lighting device, projection arrangement and display unit etc., is the higher illuminating bundle compensating illumination device of cylindrical luminous intensity capable of using, the more weak shortcoming of projection arrangement and display unit edge, and promotes application of the present invention.
< the 3rd embodiment >
The collector lens module 11 of present embodiment is to assemble to disperse the light beam that light source 20 is sent, use to disperse light source 20 identical with first embodiment, the configuration of first collector lens 111 and second collector lens 112 also is same as first embodiment, repeats no more at this.
Wherein, Second collector lens 112 is to use the PMMA plastic material of Nd=1.49 to process; The 3rd optical surface R 3 and the 4th optical surface R4 are aspheric surface; The aspheric surface that is use formula (2) constitutes, and thickness identical (being Δ t=0) or thickness along optical axis between the 3rd optical surface R3 and the 4th optical surface R4 satisfy Δ t≤3% (formula (1)).Second collector lens, 112 optical characteristics and asphericity coefficient such as table six and table seven, and satisfy the condition of formula (3)-Shi (6), like table eight.
Table six, second collector lens, 112 optical characteristics
The asphericity coefficient of table seven, second collector lens, 112 optical surfaces
Table eight, satisfy condition
Through the collector lens module 11 that constituted thus, can assemble dispersing the light beam that light source 20 sends, formation center light illumination is about 580; The light beam of 000Lux; Its distribution is shown in figure 12, can be known by Figure 12, can effectively be assembled dispersing the light beam that light source 20 sent by the collector lens module 11 of present embodiment; And project light intensity distributions and be oval illuminating bundle; Can be used for lighting device, projection arrangement and display unit etc., is the monolateral more weak shortcoming of illuminating bundle compensating illumination device, projection arrangement and display unit of elliptical light intensity distributions capable of using, and promotes application of the present invention.
< the 4th embodiment >
The collector lens module 11 of present embodiment is to assemble to reach evenly to disperse the light beam that light source 20 is sent; Use to disperse light source 20 identical with first embodiment; The configuration of first collector lens 111 and second collector lens 112 also is same as first embodiment, repeats no more at this.Wherein, second collector lens 112 is to use glass material or the plastic material of Nd=2.0 to process, and the 3rd optical surface R3 and the 4th optical surface R4 are sphere.Second collector lens, 112 optical characteristics such as tables nine, and satisfy the condition of formula (3)-Shi (6), like table ten.Table nine, second collector lens, 112 optical characteristics
Table ten, satisfy condition
Through the collector lens module 11 that constituted thus, can assemble dispersing the light beam that light source 20 sends, formation center light illumination is about 520, the light beam of 000Lux, it distributes like Figure 13.Can know by Figure 13; Can effectively assemble dispersing the light beam that light source 20 sent by the collector lens module 11 of present embodiment; And project the even luminous intensity of cores, the higher illuminating bundle of cylindrical luminous intensity; Can be used for lighting device, projection arrangement and display unit etc., is the higher illuminating bundle compensating illumination device of cylindrical luminous intensity capable of using, the more weak shortcoming of projection arrangement and display unit edge, and promotes application of the present invention.
< the 5th embodiment >
The collector lens module 11 of present embodiment is to assemble to reach evenly to disperse the light beam that light source 20 is sent; Use to disperse light source 20 identical with first embodiment; The configuration of first collector lens 111 and second collector lens 112 also is same as first embodiment, repeats no more at this.
Wherein, second collector lens 112 is to use glass material or the plastic material of Nd=1.2 to process, and the 3rd optical surface R3 and the 4th optical surface R4 are sphere.Second collector lens, 112 optical characteristics such as table ten one, and satisfy the condition of formula (3)-Shi (6), like table ten two.
Table ten one, second collector lens, 112 optical characteristics
Table ten two, satisfy condition
Through the collector lens module 11 that constituted thus, can assemble dispersing the light beam that light source 20 sends, formation center light illumination is about 320, the light beam of 000Lux, it distributes like Figure 14.Can know by 14 figure; Can effectively assemble dispersing the light beam that light source 20 sent by the collector lens module 11 of present embodiment; And project the higher illuminating bundle of monolateral luminous intensity; Can be used for lighting device, projection arrangement and display unit etc., be the partly more weak shortcoming in zone of the higher illuminating bundle compensating illumination device of monolateral luminous intensity capable of using, projection arrangement and display unit, and promote application of the present invention.
< the 6th embodiment >
As shown in Figure 6, when collector lens module 11 of the present invention can be applicable to the illumination, present embodiment provides a kind of lighting device 2, is to comprise any collector lens module 11 of dispersing light source 20 and first embodiment to the, five embodiment.Dispersing light source 20 is the light incident side that is arranged at collector lens module 11, can launch light beam and be projected to collector lens module 11; Light beam gathering and even back generation one illuminating bundle that collector lens module 11 sends in order to this is dispersed light source 20; For using different collector lens modules 11, the light intensity distributions of its illuminating bundle can have difference, the purpose that can use according to lighting device 2 and select collocation, but the convenience of expanding application more.
< the 7th embodiment >
As shown in Figure 7, lighting device 2 of the present invention can be applicable to projection arrangement 3, and present embodiment projection arrangement 3 includes lighting device 2, an optical splitter 31, a light valve 32 and the projection lens 33 of the 6th embodiment.Lighting device 2 can produce an illuminating bundle, is projeced into this optical splitter 31, in order to receive illuminating bundle, this illuminating bundle is carried out beam split.
For the application of micro-projection apparatus, the beam splitter 31 for polarization beam splitter (Polarization? Beam? Splitter; PBS), at the same time the incident illumination beam having a P polarized light and S-polarized light, polarization splitter prism (PBS) at the same time the illumination beam of the S polarized white light reflection and allows the illumination beam through the P polarized light; while the P-polarized light penetrating through the half-wave plate spaced apart, it will was transferred into S polarized light, so penetrate through the prism polarization splitter (PBS) of the illumination beam, is a only a single polarity (S polarized light) polarized light beam can be projected to the light valve 32.
When light valve 32 receives from the illuminating bundle after the beam split of this optical splitter 31, according to the control of light valve 32, at the light beam of different sequential through different spectrum (or polarized light), to produce an image strip, this image strip exposes to projection lens 33.
< the 8th embodiment >
As shown in Figure 8, be the sketch map of display unit embodiment of the present invention, display unit includes a module 4 backlight, is the module backlight of marginal ray formula at present embodiment, and module backlight includes the lighting device 2 and light disperser 41 of the 6th embodiment.Lighting device 2 can produce an illuminating bundle, is projeced into this light disperser 41, and this light disperser 41 receives this illuminating bundle, and makes this illuminating bundle produce evenly diffusion, constitutes the module backlight of display unit.
Light diffusion means 41 includes a guide plate 411 (light? Guide? Plate), the reflection sheet 412 (reflection? Sheet), a diffusion sheet 413 (diffuse? Sheet) and the prism sheet 414 (prismsheet); when the illumination device 2 emits the illumination beam projecting the light guide plate 411, the illumination beam is refracted in the light guide plate 411 advances, when the refraction angle of the illumination light guide plate 411 is less than the critical angle, the illumination light beam will be refracted back to the light guide plate 411, when the angle of refraction is greater than the illumination light guide light board 411 is a critical angle, the illumination beam is a light guide plate 411 downwardly piercing reflected back by the reflective sheet guide plate 411, 412, or up to the light guide plate 411 into the piercing diffusion sheet 413.
Because module backlight is relatively very big usually, need cooperate light disperser 41 by many lighting devices 2, make module backlight that uniform light intensity distributions arranged; On prior art, need adjustment, to avoid module backlight edge or the partly regional uneven phenomenon of luminous intensity through many refractions of optical beam.The module backlight of display unit of the present invention; Can use the different light intensity degree of different collector lens module 11 (like first embodiment to the, five embodiment) to distribute; Constitute different lighting devices 2, utilize lighting device 2 configurations of difference in functionality, can reach the effect of module 4 even luminous intensities backlight.
< the 9th embodiment >
As shown in Figure 9; Sketch map for another embodiment of display unit of the present invention; Display unit includes a module 5 backlight, is the module backlight 4 of straight-down negative at present embodiment, and module 4 backlight includes the lighting device 2 and straight-down negative light disperser 42 of the 6th embodiment.Lighting device 2 can produce an illuminating bundle, is projeced into this straight-down negative light disperser 42, constitutes the module backlight 5 of display unit.
Because module 5 backlight needs a lot of lighting devices 2 to be positioned over diffusion sheet 423 lower ends usually, send illuminating bundle to diffusion sheet 423 irradiations; The lighting device 2 of the embodiment of the invention; First collector lens 111 and second collector lens 112 that can select for use the different optical coefficient to be constituted, it can produce the lighting device 2 of the light intensity distributions of different illuminating bundles, like first embodiment to the, five embodiment; Be laid in the diverse location of module 5 backlight respectively; For example, be laid in module 5 backlight in the collector lens module 11 that uses the second, the 4th embodiment and approach the border district, approach the more weak situation in border district with compensation; Or the collector lens module 11 that uses the 3rd embodiment is laid in module backlight 5 border districts, with the more weak situation in compensation border district; Or the collector lens module 11 that uses the 5th embodiment is laid in the area that module 5 backlight need add strong illumination, to strengthen the illumination of particular locality; Thus, can reach the effect of the more even illumination of module 5 backlight.
The above; Be merely the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection domain with claim.
Claims (10)
1. a collector lens module is characterized in that, is used for assembling and evenly dispersing light source institute emitted light beams, comprises: first collector lens and second collector lens; Wherein, said first collector lens has in order to assemble the positive diopter of said light beam; Said second collector lens; For having the meniscus lens on a nonreentrant surface and a recessed surface; Said nonreentrant surface is towards said first collector lens, and said second collector lens will be assembled and evenly is projeced into outside the said recessed surface from the light beam that said first collector lens is assembled, and satisfy Δ t3%; Wherein, Δ t is the difference percentage of any point thickness t of said second collector lens; T be the normal of the said second collector lens nonreentrant surface any point go up along the line and said recessed surface between thickness.
2. collector lens module according to claim 1 is characterized in that, the same form in the satisfied following formula of said second collector lens or many formulas: 2.5R9,2R/t9,0.15Nd/R0.6,0.55R/D1.1; Wherein, R is the nonreentrant surface of said second collector lens and the radius of curvature on recessed surface; Unit is the refractive index of said second collector lens, the effective vent diameter on recessed surface that D is said second collector lens for millimeter, Nd, unit for millimeter, t be the normal of the said second collector lens nonreentrant surface any point go up along the line and recessed surface between thickness.
3. collector lens module according to claim 1 is characterized in that, the said light source of dispersing is a light-emittingdiode.
4. collector lens module according to claim 1 is characterized in that, said second collector lens is that glass or plastic cement material are processed.
5. collector lens module according to claim 1 is characterized in that, the nonreentrant surface of said second collector lens or recessed surface are sphere or aspheric surface.
6. collector lens module according to claim 1 is characterized in that, said first collector lens has a convex surface, and towards said second collector lens, and said convex surface is a sphere.
7. collector lens module according to claim 6 is characterized in that, said first collector lens is a lenticular lens.
8. a lighting device in order to the emissive lighting light beam, is characterized in that, comprising: in order to the light source of dispersing of emission light beam; And the collector lens module, constitute by each described collector lens module of claim 1 to 7, be used for assembling and the even said light source institute emitted light beams of dispersing.
9. a projection arrangement comprises lighting device, optical splitter, light valve and projection lens, it is characterized in that, said lighting device is made up of the described lighting device of claim 8, in order to the emissive lighting light beam; Said optical splitter in order to receiving the illuminating bundle that said lighting device sends, and carries out beam split with said illuminating bundle; Said light valve, in order to the illuminating bundle of reception from said optical splitter, and the generation image strip exposes to said projection lens; Said projection lens is in order to receive said image strip and to produce projection image.
10. a display unit comprises module backlight, it is characterized in that, said module backlight comprises: lighting device and light disperser; Wherein, said lighting device is made up of the described lighting device of claim 8, in order to the emissive lighting light beam; Said smooth disperser in order to receiving the illuminating bundle that said lighting device sends, and evenly spreads said illuminating bundle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100100097A TW201229609A (en) | 2011-01-03 | 2011-01-03 | Concentrating lens module and illuminating device, projecting apparatus, display apparatus using the same |
| TW100100097 | 2011-01-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102563523A true CN102563523A (en) | 2012-07-11 |
Family
ID=46409681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100070829A Pending CN102563523A (en) | 2011-01-03 | 2011-01-13 | Condensing lens module, lighting device, projection device and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102563523A (en) |
| TW (1) | TW201229609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864359A (en) * | 2015-05-08 | 2015-08-26 | 欧普照明股份有限公司 | Lens and lamp having the same |
| CN113329912A (en) * | 2018-12-19 | 2021-08-31 | 法雷奥舒适驾驶助手公司 | Lighting device for vehicle ceiling lamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085910A (en) * | 1993-10-28 | 1996-01-12 | Asahi Optical Co Ltd | Image forming lens system |
| CN1412592A (en) * | 2001-10-12 | 2003-04-23 | 里程碑株式会社 | Imaging lens |
| US20040057125A1 (en) * | 2002-09-19 | 2004-03-25 | Kenichi Sato | Imaging lens |
| US20040061955A1 (en) * | 2002-07-15 | 2004-04-01 | Enplas Corporation | Imaging lens system |
| CN101650471A (en) * | 2008-08-15 | 2010-02-17 | 一品光学工业股份有限公司 | Two-piece type ftheta lens of MEMS laser scanning device |
-
2011
- 2011-01-03 TW TW100100097A patent/TW201229609A/en unknown
- 2011-01-13 CN CN2011100070829A patent/CN102563523A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085910A (en) * | 1993-10-28 | 1996-01-12 | Asahi Optical Co Ltd | Image forming lens system |
| CN1412592A (en) * | 2001-10-12 | 2003-04-23 | 里程碑株式会社 | Imaging lens |
| US20040061955A1 (en) * | 2002-07-15 | 2004-04-01 | Enplas Corporation | Imaging lens system |
| US20040057125A1 (en) * | 2002-09-19 | 2004-03-25 | Kenichi Sato | Imaging lens |
| CN101650471A (en) * | 2008-08-15 | 2010-02-17 | 一品光学工业股份有限公司 | Two-piece type ftheta lens of MEMS laser scanning device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864359A (en) * | 2015-05-08 | 2015-08-26 | 欧普照明股份有限公司 | Lens and lamp having the same |
| CN113329912A (en) * | 2018-12-19 | 2021-08-31 | 法雷奥舒适驾驶助手公司 | Lighting device for vehicle ceiling lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201229609A (en) | 2012-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8061857B2 (en) | LED light shaping device and illumination system | |
| CN103511987B (en) | Light control lens and light source device thereof | |
| CN101430072B (en) | Assembled uniform surface light source | |
| CN103062707B (en) | Light-emitting diode lens and light source device thereof | |
| CN103163576B (en) | Light-emitting diode lens and light-emitting device thereof | |
| CN100460949C (en) | Surface light source device, illumination unit and light flux control member | |
| US8371714B2 (en) | Fresnel LED lens and LED assembly thereof | |
| US20080279541A1 (en) | Optical Device and Light Source | |
| CN101990614B (en) | Led light shaping device and illumination system | |
| CN100590346C (en) | LED road lamp | |
| CN104101920A (en) | Reflective diffusion lens and lighting installation | |
| CN100378543C (en) | LCD back light source producing method | |
| CN204254511U (en) | Fly's-eye lens device and relevant light-source system | |
| CN206479663U (en) | Backlight module and display device | |
| CN101676615B (en) | Convex Fresnel LED optical lens for angular distribution patterns and LED assembly thereof | |
| CN104132304A (en) | Optical lens | |
| CN201273524Y (en) | Convex surface Fresnel LED optical lens and LED component composed by the same | |
| CN102207687A (en) | Lighting device | |
| CN201310816Y (en) | Planar Fresnel LED optical lens and LED assembly consisting same | |
| JP4875044B2 (en) | Backlight module | |
| CN102563523A (en) | Condensing lens module, lighting device, projection device and display device | |
| CN102901045B (en) | Fresnel Lenses for high-power LED light source | |
| CN101578478B (en) | Light emitting device and lens thereof | |
| CN202835182U (en) | Fresnel lens for LED light source with high power | |
| CN102027397A (en) | A directional light source using refractive and reflective optics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |