CN101359157A - Light-collecting device for projection apparatus - Google Patents
Light-collecting device for projection apparatus Download PDFInfo
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- CN101359157A CN101359157A CNA2007101413285A CN200710141328A CN101359157A CN 101359157 A CN101359157 A CN 101359157A CN A2007101413285 A CNA2007101413285 A CN A2007101413285A CN 200710141328 A CN200710141328 A CN 200710141328A CN 101359157 A CN101359157 A CN 101359157A
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Abstract
The invention provides a light gathering device for a projection device; the light gathering device at least comprises a light gathering column; and the light gathering column comprises a main body part, a vertical length direction, a light entry end part and a light exit end part. The light entry end part comprises an incidence surface and a reflection surface adjacent to the incidence surface; an angle is formed between the incidence surface and the reflection surface; the light exit end part is opposite to the light entry end part; wherein, a first ray can penetrate the incidence surface of the light entry end part to enter the main body part of the light gathering column, and then goes towards the light exit end part along the vertical length direction; and a second ray can enter the main body part of the light gathering column and is then reflected by the reflection surface of the light entry end part so as to go towards the light exit end part along the vertical length direction.
Description
Technical field
The invention relates to a kind of light collecting device that is used for a projection arrangement, refer in particular to and a kind ofly make simple and easy and be applicable to the light collecting device of multiple light courcess projection arrangement.
Background technology
Generally speaking, the digital light processing (Digital Light Processing, DLP) optical projection system includes light source, beam splitter, closes optical element and digital micro-mirror device (Digital Micromirror Device, DMD) parts such as grade, light just can produce image after handling by each parts.And handle in the optical projection system in digital light, in order to integrate light and to promote its uniformity coefficient, can on the light path after light source light harvesting post (integration rod) be set usually.Light just can enter the light harvesting post after light source penetrates, through after repeatedly reflecting, the exiting surface from the light harvesting post penetrates again in light harvesting post inside.Whereby, light is integrated and further homogenising.
For a long time, digital light is handled the restriction that optical projection system has light exhibition amount (é tendue) conservation, only means to be effective light for beginning in limited light source area and the light angle, causes the general not enough situation of brightness.Handle the brightness of optical projection system for improving digital light, can consider to adopt the multiple light source illumination framework, utilize and improve quantity of light source, and then increase light source area and light angle, to improve brightness of image.
For light that multiple light courcess is launched in addition in conjunction with, and and then homogenising, the design of light harvesting post just becomes more important.In the prior art, disclosed a kind of multiple light source illumination framework and light collecting device thereof that is used for optical projection system, shown in Figure 1A and Figure 1B.This existing illumination framework 1 includes one first light source 11, a secondary light source 13, one first light harvesting post 15, one second light harvesting post 17 and one the 3rd light harvesting post 19.Wherein, first light source 11 is to be oppositely arranged with secondary light source 13, and each light harvesting post 15,17,19 has incidence surface 151,171,191 and exiting surface 153,173,193, the first light harvesting posts 15 and the second light harvesting post 17 respectively and also has reflecting surface 155,175.First light 111 that first light source 11 is launched enters the first light harvesting post 15 by incidence surface 151, and by after reflecting surface 155 reflections, penetrates in exiting surface 153; Similarly, second light 131 of secondary light source 13 penetrates into the second light harvesting post 17 by incidence surface 171, and after reflecting surface 175 reflections of the second light harvesting post 17, penetrates in exiting surface 173; Light in exiting surface 153,173 penetrates enters immediately in the 3rd light harvesting post 19, and leaves through exiting surface 193, is projected to other optical element of rear end then.Whereby, just the light of two Different Light can be integrated, and homogenising in addition, also reduce simultaneously because of closing the needed element of light, and then minimizing light-source system overall volume.
Because aforesaid light collecting device is rather complicated on structure, has certain degree of difficulty on making.Specifically, because the structure of this light collecting device is made up by three light harvesting posts, add that each light harvesting column dimension is minimum, desire is bonded to the first light harvesting post 15 and the second light harvesting post 17 on the 3rd light harvesting post 19 has certain technical difficulty.In addition, the coupling of light harvesting intercolumniation is difficult for, the number of times of light path by coupling unit the more, optical loss will be healed greatly.In addition, the area of reflecting surface 155,175 is little, and accurately coating (coating) reflecting material is very difficult.
On the other hand, the length breadth ratio of the digital micro-mirror device of factor word optical processing optical projection system has certain dimension scale (be generally 4: 3,16: 9 or 16: 10), during design if desire to make the exiting surface 193 of light harvesting post to meet the length breadth ratio of digital micro-mirror device, and consider light source and be subjected to restriction itself, must be horizontally disposed with as far as possible in the projector; Projection arrangement inside certainly will be provided with extra optical element, and so that light correctly is projected to digital micro-mirror device, this not only increases cost also can cause more optical loss.
And existing light collecting device is only suitable cooperating two light sources to use, and the difficult projection arrangement that is applicable to multiple light courcess is not more had elasticity in the application.
In sum, though existing multiple light source illumination framework can cooperate two light sources to use, yet light collecting device has manufacture difficulty height, and shortcoming such as coupling light rapid wear consumption.Therefore, provide a kind of projection arrangement that can be applicable to multiple light source illumination, and be easy to processing and manufacturing, collection efficiency height and the little light collecting device of size, industry is needed badly for this reason.
Summary of the invention
A purpose of the present invention is to provide a kind of light collecting device that is used for projection arrangement, this light collecting device can be integrated the light of a plurality of light sources, providing projection arrangement required brightness, and meet the dimension scale of digital micro-mirror device, and effectively utilize the inner space of projection arrangement.
Another object of the present invention is to provide a kind of light collecting device that is used for projection arrangement, this light collecting device simple in structure advantage such as makes easily, cost is lower so have.
Another purpose of the present invention is to provide a kind of light collecting device that is used for projection arrangement, in this design, reduces the chance of light path by light harvesting intercolumniation coupling unit, so light collecting device can significantly reduce the risk of light consume, and then obtains preferable coupling efficiency.
For reaching above-mentioned purpose, light collecting device of the present invention comprises one first light harvesting post, and it has a body, a longitudinally, a light inlet end and a bright dipping end.Wherein, the light inlet end comprises one first plane of incidence and one first reflecting surface, and first plane of incidence is adjacent with first reflecting surface and form an angle, and the bright dipping end is with respect to the light inlet end.When reality was used, one first light is suitable can to penetrate by first plane of incidence of light inlet end, enters the body of light harvesting post, follows longitudinally and advances towards the bright dipping end; And the suitable body that can enter the first light harvesting post of one second light, first reflecting surface reflection by the light inlet end follows longitudinally and advances towards the bright dipping end.
Description of drawings
Consult accompanying drawing specific description of embodiments of the present invention by following, affiliated technical field has knows that usually the knowledgeable just can understand purpose of the present invention, and technological means of the present invention and implement aspect; Wherein:
Figure 1A is in the prior art, light collecting device and each configured light sources synoptic diagram;
Figure 1B is the enlarged diagram of the existing light collecting device of Figure 1A;
Fig. 2 A is the schematic perspective view of the light collecting device of first embodiment of the invention;
Fig. 2 B is the light collecting device according to Fig. 2 A, cooperates the light path synoptic diagram of light source;
Fig. 3 A is the schematic perspective view of the light collecting device of second embodiment of the invention;
Fig. 3 B is the light collecting device according to Fig. 3 A, cooperates the light path synoptic diagram of light source;
Fig. 4 A is the schematic perspective view of the light collecting device of third embodiment of the invention;
Fig. 4 B is the light collecting device according to Fig. 4 A, cooperates the light path synoptic diagram of light source;
Fig. 5 is the schematic perspective view according to another enforcement aspect of the light collecting device of Fig. 3 A;
Fig. 6 A is the schematic perspective view according to the another enforcement aspect of the light collecting device of Fig. 4 A;
Fig. 6 B is the light collecting device according to Fig. 6 A, cooperates the light path synoptic diagram of light source;
Fig. 7 A is the light collecting device according to Fig. 6 A, the projecting plane synoptic diagram of light inlet end;
Fig. 7 B is the light collecting device according to Fig. 6 A, the projecting plane synoptic diagram of bright dipping end;
Fig. 8 A is the schematic perspective view according to the another enforcement aspect of the light collecting device of Fig. 3 A; And
Fig. 8 B is the light collecting device according to Fig. 8 A, cooperates the light path synoptic diagram of light source.
Embodiment
The present invention discloses a kind of light collecting device that is used for a projection arrangement, in first embodiment shown in Fig. 2 A, the 2B, projection arrangement (scheming not shown) comprises a light collecting device 2, one first light source 20 and a secondary light source 22, wherein, the stereographic map of light collecting device 2 is shown in Fig. 2 A, and then shown in Fig. 2 B, what must illustrate is the vertical view of light collecting device 2 cooperation light sources, accompanying drawing of the present invention is the relation between schematic components, and is non-in order to limit each size of component.This light collecting device 2 comprises one first light harvesting post 21, in order to collect and the homogenising projection arrangement in the light beam that produced of first light source 20 and secondary light source 22.In addition, in this embodiment, first light source 20 is ultrahigh pressure mercury lamp with secondary light source 22, and (Ultra High Pressure Lamp UHP), but not as limit, also can adopt the other light sources device.
The first light harvesting post 21 has a body 211, a longitudinally 213, a light inlet end 215 and with respect to a bright dipping end 217 of light inlet end 215.Body 211 is to extend along longitudinally 213; Light inlet end 215 is positioned at an end of body 211, and it comprises one first plane of incidence 215a, one first reflecting surface 215b and one second plane of incidence 215c, and bright dipping end 217 comprises one first exit facet 217a.First plane of incidence 215a is adjacent with the first reflecting surface 215b and form an angle, and second plane of incidence 215c just intersects vertically with first plane of incidence 215a, and oblique with respect to the first reflecting surface 215b.In this embodiment, be coated with a layer of reflective material on the first reflecting surface 215b, to have the effect of reflection.
First light, 200 suitable can the penetrating by first plane of incidence 215a of light inlet end 215 that first light source 20 produces enter the body 211 of the first light harvesting post 21, are following longitudinally 213 and are advancing towards bright dipping end 217; Second light 220 that secondary light source 22 produces then elder generation penetrates by second plane of incidence 215c, after entering the body 211 of the first light harvesting post 21, suitable can be by the first reflecting surface 215b reflection of light inlet end 215, change direct of travel and follow longitudinally 213, to advance towards bright dipping end 217.Whereby, just homogenising in addition of first light 200 and second light 220.Be noted that in this embodiment, the light that each light source produces has all comprised a chief ray (chief ray) and an edge light (marginal ray), below Xu Shu each light all only adopts chief ray and direct of travel thereof so that explanation.
The second embodiment of the present invention is further to form another light harvesting post on the first light harvesting post 21 of first embodiment, to satisfy the enforcement aspect in many lamps source.Projection arrangement (scheming not shown) comprises a light collecting device 3, one first light source 30, a secondary light source 32 and one the 3rd light source 34.The stereographic map of light collecting device 3 as shown in Figure 3A, light collecting device 3 cooperates the vertical view of light sources then shown in Fig. 3 B.This light collecting device 3 comprises one first light harvesting post 31 and one second light harvesting post, 33, the first light harvesting posts 31 are the light beams that produced in order to first light source 30 in collection and the homogenising projection arrangement and secondary light source 32; 33 light beams that produced in order to collection and homogenising the 3rd light source 34 of the second light harvesting post.The second light harvesting post 33 is adjacent to the first light harvesting post 31, and in this embodiment, the first light harvesting post 31 and the second light harvesting post 33 are respectively the light harvesting post with cutting angle; Similarly, first light source 30, secondary light source 32 and the 3rd light source 34 can be ultrahigh pressure mercury lamp, but not as limit.
Specifically, the first light harvesting post 31 has one first body 311, a longitudinally 313, one first light inlet end 315 and with respect to one first bright dipping end 317 of the first light inlet end 315.Body 311 is to extend along longitudinally 313; The first light inlet end 315 is positioned at an end of body 311, and it comprises one first plane of incidence 315a, one first reflecting surface 315b and one second plane of incidence 315c, and 317 of the first bright dipping ends comprise one first exit facet 317a.First plane of incidence 315a is adjacent with the first reflecting surface 315b and form an angle, and second plane of incidence 315c just intersects vertically with first plane of incidence 315a, and oblique with respect to the first reflecting surface 315b.Wherein, the first reflecting surface 315b is coated with a layer of reflective material, to have the effect of reflection.
First light, 300 suitable can the penetrating by first plane of incidence 315a of the first light inlet end 315 that first light source 30 produces enter first body 311 of the first light harvesting post 31, are following longitudinally 313, advance towards the first bright dipping end 317; Second light 320 that secondary light source 32 produces then penetrates by second plane of incidence 315c, after entering the first light harvesting post, 31 inside, suitable can be by the first reflecting surface 315b reflection of the first light inlet end 315, change direct of travel and change and follow longitudinally 313, to advance towards the first bright dipping end 317.
And the second light harvesting post 33 has one second body 331, one second light inlet end 335 and one second bright dipping end 337.The second light inlet end 335 of the second light harvesting post 33 has one the 3rd plane of incidence 335a and one second reflecting surface 335b, 337 of the second bright dipping ends of the second light harvesting post 33 have one second exit facet 337a, and wherein the second exit facet 337a is relative with the second reflecting surface 335b.The second reflecting surface 335b can be coated with a layer of reflective material, to have the effect of reflection.Whereby, after the 3rd light 340 that the 3rd light source 34 produces enters second body 331 of the second light harvesting post 33 by the 3rd plane of incidence 335a, suitable can be by second reflecting surface 335b reflection, change direct of travel and follow longitudinally 313, advance towards the second exit facet 337a.
In this embodiment, first exit facet 317a of the first bright dipping end 317 and the second exit facet 337a of the second bright dipping end 337 are in the same plane, and the first light harvesting post 31 and the second light harvesting post 33 are one, so in fact, first light 300, second light 320 carry out homogenising in the first light harvesting post 31, and the 3rd light 340 is to carry out homogenising in the second light harvesting post 33, and the light after two light harvesting post homogenising penetrates from same plane.In addition, because first light 300 and second light 320 are advanced in same light harvesting post, can avoid light harvesting post bonding part to cause optical loss.And secondary light source 32 and the 3rd light source 34 just are misplaced in opposite side, can effectively reduce the space that is provided with of multiple light courcess.In addition, in this embodiment, more than the narration of each light equally all only adopt chief ray so that explanation.
Well imagine that light collecting device of the present invention can be used with more light sources.The projection arrangement that the third embodiment of the present invention disclosed (scheming not shown) comprises a light collecting device 4 and one first light source 40, a secondary light source 42, one the 3rd light source 44 and one the 4th light source 46, the stereographic map of light collecting device 4 is shown in Fig. 4 A, and light collecting device 4 cooperates the vertical view of these light sources then shown in Fig. 4 B.This light collecting device 4 comprises one first light harvesting post 41, one second light harvesting post 43 and one the 3rd light harvesting post 45, in order to collect and the uniform projection device in the light beam that produced of first light source 40, secondary light source 42, the 3rd light source 44 and the 4th light source 46.The second light harvesting post 43 is adjacent to the first light harvesting post 41, and 45 opposite sides that are adjacent to the second light harvesting post 43 of the 3rd light harvesting post.In this embodiment, the first light harvesting post 41, the second light harvesting post 43 and the 3rd light harvesting post 45 are respectively the light harvesting post with cutting angle; First light source 40, secondary light source 42, the 3rd light source 44 and the 4th light source 46 all can be ultrahigh pressure mercury lamp, but not as limit.
The first light harvesting post 41 has one first body 411, one first light inlet end 415 and the one first bright dipping end 417 relative with this first light inlet end 415, and defines a longitudinally 413.First body 411 is to extend along longitudinally 413; The first light inlet end 415 is positioned at an end of first body 411, and it comprises one first plane of incidence 415a, one first reflecting surface 415b and one second plane of incidence 415c, and the first bright dipping end 417 comprises one first exit facet 417a.First plane of incidence 415a is adjacent with the first reflecting surface 415b and form an angle, and second plane of incidence 415c just intersects vertically with first plane of incidence 415a, and oblique with respect to the first reflecting surface 415b.The first reflecting surface 415b is coated with a layer of reflective material, to have the effect of reflection.
First light, 400 suitable can the penetrating by first plane of incidence 415a of the first light inlet end 415 that first light source 40 produces enter first body 411 of the first light harvesting post 41, are following longitudinally 413 and are advancing towards going out the first bright dipping end 417; Second light 420 that secondary light source 42 produces then penetrates by second plane of incidence 415c, after entering first body 411, suitable can be by the first reflecting surface 415b reflection of the first light inlet end 415, change direct of travel and change and follow longitudinally 413, to advance towards the first bright dipping end 417.
The second light harvesting post 43 has one second body 431, one second light inlet end 435 and one second bright dipping end 437.The second light inlet end 435 of the second light harvesting post 43 has one the 3rd plane of incidence 435a and one second reflecting surface 435b, 437 of the second bright dipping ends of the second light harvesting post 43 have one second exit facet 437a, and wherein the second exit facet 437a is relative with the second reflecting surface 435b.The second reflecting surface 435b still can be coated with a layer of reflective material, to have the effect of reflection.Whereby, after the 3rd light 440 that the 3rd light source 44 produces enters second body 431 of the second light harvesting post 43 by the 3rd plane of incidence 435a, suitable can be by second reflecting surface 435b reflection, change direct of travel and follow longitudinally 413 and advance towards the second exit facet 437a.
45 on the 3rd light harvesting post has one the 3rd body 451, one the 3rd light inlet end 455 and one the 3rd bright dipping end 457.The 3rd light inlet end 455 of the 3rd light harvesting post 45 has one the 4th plane of incidence 455a and one the 3rd reflecting surface 455b, 457 of the 3rd bright dipping ends of the 3rd light harvesting post 45 have one the 3rd exit facet 457a, and wherein the 3rd exit facet 457a is relative with the 3rd reflecting surface 455b.The 3rd reflecting surface 455b can be coated with layer of reflective material, to have the effect of reflection.Whereby, after the 4th light 460 that the 4th light source 46 produces enters the 3rd body 451 of the 3rd light harvesting post 45 by the 4th plane of incidence 455a, suitable can be by the 3rd reflecting surface 455b reflection, change direct of travel and follow longitudinally 413 and advance towards the 3rd exit facet 457a.
In this embodiment, the 3rd exit facet 457a of the first exit facet 417a of the first bright dipping end 417, the second exit facet 437a of the second bright dipping end 437 and the 3rd bright dipping end 457 is in the same plane, and the first light harvesting post 41, the second light harvesting post 43 and the 3rd light harvesting post 45 are one, so first light 400 and second light 420 carry out homogenising in the first light harvesting post 41, and the 3rd light 440 and the 4th light 460 is respectively by carrying out homogenising in the second light harvesting post 43 and the 3rd light harvesting post 45, and the light after three light harvesting post homogenising penetrates from same plane.In addition, because first light 400 and second light 420 are to advance, can avoid the optical loss of light harvesting post bonding part in same light harvesting post.Secondary light source 42, the 3rd light source 44 and the 4th light source 46 just are misplaced in opposite side, with reduce multiple light courcess required the space is set.Similarly, the narration of each light is also all only adopted chief ray so that explanation in this embodiment.
What must illustrate is that the layer of reflective material that aforementioned reflecting surface was coated with all can be substituted by catoptron.As shown in Figure 5, be example with second embodiment, can one first catoptron 51 be set on the first reflecting surface 315b, in order to the reflection of carrying out light, and one second catoptron 53 is set on the second reflecting surface 335b, in order to the reflection of carrying out light.In addition, above-mentioned each light collecting device also can be simultaneously and with being coated with layer of reflective material and the reflecting surface of catoptron being set.
If further consider light collecting device in the distribution of light that exit facet provided, to cooperate the dimension scale of digital micro-mirror device, the various embodiments described above can have another enforcement aspect.With the 3rd embodiment is example, this stereographic map of implementing aspect as shown in Figure 6A, light collecting device 4 ' cooperates the vertical view of light source then shown in Fig. 6 B.The first light harvesting post 41 ', the second light harvesting post 43 ' and the 3rd light harvesting post 45 ' generally speaking are the cones that section is a rectangle, have a sectional area that increases progressively from three's light inlet end to bright dipping end.First plane of incidence and each reflecting surface (corresponding to the first reflecting surface 415b, the second reflecting surface 435b and the 3rd reflecting surface 455b of Fig. 4 A) are in the area summation on a projecting plane of vertical longitudinally, be in the area on a projecting plane of vertical longitudinally less than each exit facet (corresponding to the first exit facet 417a, the second exit facet 437a and the 3rd exit facet 457a of Fig. 4 A), in brief, the projecting plane of the light inlet end of light collecting device 4 ' is the projecting plane less than the bright dipping end.
Clearer and more definite, see also Fig. 7 A and Fig. 7 B, Fig. 7 A is depicted as light collecting device in the projecting plane of light inlet end synoptic diagram, and Fig. 7 B is depicted as light collecting device in the projecting plane of bright dipping end synoptic diagram, wherein, first plane of incidence 415a, the first reflecting surface 415b, the second reflecting surface 435b and the formed projecting plane 701 of the 3rd reflecting surface 455b, 703,705,707, can make the light inlet end form the length of side in fact ratio be 2: 1 rectangle, and the formed projecting plane 711, bright dipping end (exit facet) of each light harvesting post, 713,715,717 owing to be that equal proportion increases progressively, then make this bright dipping end also form the length of side in fact ratio be 2: 1 rectangle; For cooperating all size of digital micro-mirror device, also can make light inlet end and bright dipping end form 4: 3,16: 9 or 16: 10 rectangle of length of side essence equal proportion certainly; In addition, also can make the light inlet end form the length of side in fact ratio be 16: 8 rectangle, to be essentially equal proportion be 16: 9 rectangle and the bright dipping end forms the length of side.Above-mentioned enforcement aspect is looked closely the specification of the digital micro-mirror device that is cooperated and is decided, no matter the size of light inlet end why, light harvesting post design by convergent or flaring, can make that all the bright dipping end can have preferable length breadth ratio, existing this technology also can push away to such an extent that have an aspect of different length of side ratios easily.
Remove the form of described second light harvesting post of the various embodiments described above and the 3rd light harvesting post, each light harvesting post (including but not limited to the second light harvesting post and/or the 3rd light harvesting post) of being located at first light harvesting post top also can be other structural shapes, for example, its shape can be identical with the first light harvesting post of the various embodiments described above.With second embodiment is example, and this stereographic map of implementing aspect is shown in Fig. 8 A, and light collecting device 3 ' cooperates the vertical view of light source then shown in Fig. 8 B.The second light harvesting post 33 ' of light collecting device 3 ' also is adjacent to the first light harvesting post 31, and the second light harvesting post 33 ' has one second body 331 ', one second light inlet end 335 ' and one second bright dipping end 337 ' equally.
Yet, different with second embodiment is that the projection arrangement that adopts this light collecting device 3 ' also can adopt one the 4th light source 36 except that comprising one the 3rd light source 34 ' more, in addition, the second light inlet end 335 ' of the second light harvesting post 33 ' has one the 3rd plane of incidence 335a ' and one second reflecting surface 335b '; The second bright dipping end 337 ' has the one second exit facet 337a ' relative with the second reflecting surface 335b '; Wherein, the second reflecting surface 335b ' can be coated with a layer of reflective material, to have the effect of reflection.Whereby, the 3rd light 340 ' suitable can the penetrating that the 3rd light source 34 ' produces by the 3rd plane of incidence 335a ' of the second light inlet end 335 ', enter second body 331 ' of the second light harvesting post 33 ', follow longitudinally 313, to advance towards the second exit facet 337a '.The 4th light 360 that the 4th light source 36 produces also can enter second body 331 ' of the second light harvesting post 33 ', the second reflecting surface 335b ' reflection by the second light inlet end 335 ', change direct of travel and change and follow longitudinally 313, advance towards the second exit facet 337a ' of the second bright dipping end 337 '.
Light collecting device of the present invention can adopt cutting way that single light harvesting post is processed, and perhaps in integrated mode, its technology is simple and easy relatively.Structure whereby, the light path coupling efficiency that can not detract because of the composition surface.In addition, the present invention only adopt single light harvesting post just can be even the light that produces of a plurality of light sources, by structural design of the present invention, the suitable layout that can interlace of each light source, significantly reduced the space that light source is provided with, the feasible overall dimensions of the projection arrangement of this light collecting device that adopts more dwindles.
The above embodiments only are used for exemplifying enforcement aspect of the present invention, and explain technical characterictic of the present invention, are not to be used for limiting category of the present invention.Any be familiar with this operator can unlabored change or the arrangement of the isotropism scope that all belongs to the present invention and advocated, the scope of the present invention should be as the criterion with the application's claim scope.
Claims (15)
1. a light collecting device that is used for a projection arrangement comprises one first light harvesting post, it is characterized in that this first light harvesting post has:
One longitudinally;
One body extends along this longitudinally;
One light inlet end is positioned at an end of this body and comprises one first plane of incidence and one first reflecting surface, and this first plane of incidence is adjacent with this first reflecting surface and form an angle; And
One bright dipping end is positioned on this body and is positioned at the opposite end of this light inlet end;
Wherein, one first light is suitable can to penetrate by this first plane of incidence, enters the body of this first light harvesting post, follows this longitudinally and advances towards this bright dipping end; And the suitable body that can enter this first light harvesting post of one second light, this first reflecting surface reflection by this light inlet end follows this longitudinally and advances towards this bright dipping end.
2. light collecting device according to claim 1 is characterized in that this light inlet end also comprises one second plane of incidence, and this second light is to penetrate by this second plane of incidence, enters this first light harvesting post body.
3. light collecting device according to claim 1 is characterized in that being coated with a layer of reflective material on this first reflecting surface.
4. light collecting device according to claim 1 is characterized in that also comprising one first catoptron, and it is located on this first reflecting surface.
5. light collecting device according to claim 1 is characterized in that this first light harvesting post is to be a cone, and this light inlet end to this bright dipping end, has a sectional area that increases progressively along this longitudinally certainly.
6. light collecting device according to claim 5, it is characterized in that this first plane of incidence and the area summation of this first reflecting surface in a projecting plane of vertical this longitudinally, is less than one first exit facet of this bright dipping end area in a projecting plane of vertical this longitudinally.
7. light collecting device according to claim 6 it is characterized in that formed this projecting plane of this first exit facet is a rectangle, and the length breadth ratio of this rectangle is 4: 3,16: 9 or 16: 10.
8. light collecting device according to claim 1, it is characterized in that also comprising one second light harvesting post, it is adjacent to this first light harvesting post, this second light harvesting post has one second reflecting surface, one second exit facet relative with this second reflecting surface, whereby, one the 3rd light can enter a body of this second light harvesting post, follows this longitudinally by this second reflecting surface reflection and advances towards this second exit facet.
9. light collecting device according to claim 2, it is characterized in that also comprising one second light harvesting post, it is adjacent to this first light harvesting post, this second light harvesting post has one the 3rd plane of incidence, one second reflecting surface and one second exit facet relative with this second reflecting surface, whereby, one the 3rd light is suitable can to penetrate by the 3rd plane of incidence, enters a body of this second light harvesting post, follows this longitudinally and advances towards this second exit facet; And the suitable body that can enter this second light harvesting post of one the 4th light by this second reflecting surface reflection, follows this longitudinally and advances towards this second exit facet.
10. according to Claim 8 or 9 described light collecting devices, it is characterized in that being coated with a layer of reflective material on this second reflecting surface.
11. according to Claim 8 or 9 described light collecting devices, it is characterized in that also comprising one second catoptron, it is located at this second reflecting surface.
12. according to Claim 8 or 9 described light collecting devices, it is characterized in that this second light harvesting post is to be a cone.
13. light collecting device according to claim 12, it is characterized in that this first plane of incidence, this first reflecting surface and this second reflecting surface area summation in a projecting plane of vertical this longitudinally, is in the area summation on a projecting plane of vertical this longitudinally less than one first exit facet of this bright dipping end and this second exit facet.
14. light collecting device according to claim 13 is characterized in that this first exit facet and this second exit facet, formed this projecting plane is a rectangle, and the length breadth ratio of this rectangle is 4: 3,16: 9 or 16: 10.
15. according to Claim 8 or 9 described light collecting devices, it is characterized in that this first light harvesting post and this second light harvesting post are integrally formed.
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| CNA2007101413285A CN101359157A (en) | 2007-08-01 | 2007-08-01 | Light-collecting device for projection apparatus |
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| CNA2007101413285A CN101359157A (en) | 2007-08-01 | 2007-08-01 | Light-collecting device for projection apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936459B (en) * | 2009-07-02 | 2012-09-05 | 台达电子工业股份有限公司 | Composite light source system |
| TWI408415B (en) * | 2009-06-22 | 2013-09-11 | Delta Electronics Inc | Hybrid light source system |
| CN103605255A (en) * | 2013-11-20 | 2014-02-26 | 苏州佳世达光电有限公司 | Optical projection system |
| CN104678691A (en) * | 2013-11-28 | 2015-06-03 | 台达电子工业股份有限公司 | Light source system and display device |
| CN105867058A (en) * | 2016-05-10 | 2016-08-17 | 湖北久之洋红外系统股份有限公司 | Multi-light-source coupling optical system of projector |
| US9664988B2 (en) | 2013-11-28 | 2017-05-30 | Delta Electronics, Inc. | Light source system with light coupling module and display apparatus comprising the same |
| CN108508689A (en) * | 2018-03-23 | 2018-09-07 | 苏州佳世达光电有限公司 | Light collection system and apply its projection arrangement |
-
2007
- 2007-08-01 CN CNA2007101413285A patent/CN101359157A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI408415B (en) * | 2009-06-22 | 2013-09-11 | Delta Electronics Inc | Hybrid light source system |
| CN101936459B (en) * | 2009-07-02 | 2012-09-05 | 台达电子工业股份有限公司 | Composite light source system |
| CN103605255A (en) * | 2013-11-20 | 2014-02-26 | 苏州佳世达光电有限公司 | Optical projection system |
| CN104678691A (en) * | 2013-11-28 | 2015-06-03 | 台达电子工业股份有限公司 | Light source system and display device |
| US9664988B2 (en) | 2013-11-28 | 2017-05-30 | Delta Electronics, Inc. | Light source system with light coupling module and display apparatus comprising the same |
| CN105867058A (en) * | 2016-05-10 | 2016-08-17 | 湖北久之洋红外系统股份有限公司 | Multi-light-source coupling optical system of projector |
| CN108508689A (en) * | 2018-03-23 | 2018-09-07 | 苏州佳世达光电有限公司 | Light collection system and apply its projection arrangement |
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