CN102650809A - Light source system and projection device including the light source system - Google Patents

Abstract

The invention relates to a light source system and a projection device comprising the same. The projection device comprises an imaging system and a light source system. The light source system includes a first light source, a light splitting element, at least one light condensing element, a rotating disk and a light collecting element. The first light source provides a first band light, and the turntable has at least one band conversion region and a reflection region. After the first waveband light passes through the light splitting element and the at least one light condensing element, the first waveband light is focused on the at least one waveband conversion area to be converted into a second waveband light, or the first waveband light is focused on the reflection area to be reflected. The second wave band light and the reflected first wave band light are focused to the light collecting element by at least one light condensing element.

Description

Light source system and projection device including the light source system

technical field

The invention relates to a light source system and a projection device including the light source system. More specifically, the present invention is a light source system that converts the wavelength of light in a specific wavelength band and a projection device using the light source system.

Background technique

In recent years, due to the gradual improvement of the manufacturing technology of projection devices, light, thin and small projection devices have become the mainstream in the market. The demand for innovation and change in the market has promoted the continuous improvement of projection device design. Projection device manufacturers must accordingly develop various projection devices that are smaller, more efficient, and have better image quality, so as to meet market demand.

Please refer to FIG. 1. For example, U.S. Patent No. 7,547,114 discloses a projection device 1. Its light source system 11 uses a single light source to project onto a color wheel 112, and a green fluorescent material and a red fluorescent material are arranged on a color wheel 112. above, so as to reflect or convert the blue light emitted by a blue solid-state light source 111 (such as a light emitting diode or laser) into green light or red light, which is provided to the back-end imaging system for imaging. However, the luminous efficiency of the projection device using this technology is too low and consumes a lot of light energy.

Please refer to FIG. 2, which shows another light source system 21 of an existing projector 2, which utilizes a blue solid-state light source 211, a red light emitting diode 212, and a wavelength conversion element 213 with a green fluorescent material instead of using a single light source. The way of projecting to the color wheel, and focusing the reflected or converted light to the imaging system for easy imaging. However, because the blue light needs to be reflected many times before it can combine with the converted green light and red light, the light energy of the blue light will be greatly reduced after multiple reflections; moreover, because the light emitted by the light-emitting diode is scattered Therefore, multiple light-gathering elements are required to concentrate light to improve luminous efficiency, but in this way, the projector 2 must have a larger internal volume to accommodate the light-gathering elements, which cannot meet the market's demand for thinness and shortness.

To sum up, how to make the projection device have a high-efficiency light source system and a small volume at the same time, and at the same time reduce the waste of light energy and avoid the problem of uneven color of the display screen is still an urgent effort in the industry. The goal.

Contents of the invention

An object of the present invention is to provide a light source system, which can be applied to a projection device, so as to reduce the size of the projection device and improve luminous efficiency.

To achieve the aforementioned purpose, the present invention provides a projection device, which includes an imaging system and a light source system. The light source system includes a first light source, a light splitting element, at least one light collecting element, a turntable and a light collecting element. The first light source provides light of a first wavelength band. At least one light concentrating element has an optical axis. The turntable has at least one wavelength conversion area and a reflection area, and the turntable is arranged on a first side of the optical axis. The light-collecting element is disposed on a second side of the optical axis, and the light-collecting element is conjugated to the rotating disk relative to the optical axis. The light of the first wavelength band is focused on at least one wavelength band conversion area or reflection area after passing through the light splitting element and at least one light concentrating element. When the light of the first wavelength band is focused on at least one wavelength conversion area, the light of the first wavelength band is converted into a light of the second wavelength band, and then is focused to the light collecting element by at least one light concentrating element. In addition, when the light of the first wavelength band is focused on the reflective area, the light of the first wave band is reflected by the reflective area, and then the light of the first wave band is focused to the light collecting element by at least one light concentrating element.

The beneficial effects of the present invention are: the light source system of the present invention can optimize the use of light sources to increase the brightness of the display screen of the projection device using the light source system of the present invention and reduce the problem of uneven color. At the same time, the projection device using the light source system of the present invention can also avoid excessive use of energy or increase in volume of the projection device due to an overly complex configuration of light source elements.

After referring to the accompanying drawings and the implementation methods described later, those skilled in the art can understand other objectives and advantages of the present invention, as well as the technical means and implementation aspects of the present invention.

Description of drawings

Fig. 1 is a schematic diagram of an existing projection device;

2 is a schematic diagram of another existing projection device;

3 is a schematic diagram of a projection device according to a first embodiment of the present invention;

4 is a schematic diagram of a first light source of the projection device according to the first embodiment of the present invention;

5 is a schematic diagram of the turntable of the projection device according to the first embodiment of the present invention;

6 is a schematic diagram of a projection device according to a second embodiment of the present invention; and

FIG. 7 is a schematic diagram of a turntable of a projection device according to a second embodiment of the present invention.

Detailed ways

The content of the present invention will be explained in the following embodiments. The present invention relates to a light source system and a projection device using the light source system. The projection device may be a digital light processing (Digital Light Processing; DLP) projection display or a liquid crystal (Liquid Crystal Display; LCD) projection display or other equipment with a projection display function. It should be noted that, in the following examples and accompanying drawings, the description about the implementation is only for the purpose of explaining the present invention, rather than directly limiting the present invention. Meanwhile, in the following examples and accompanying drawings, the same as the present invention Components that are not directly related have been omitted and not shown; and the dimensional relationship among the components in the drawings is only for easy understanding, and is not intended to limit the actual scale.

The first embodiment of the present invention is a light source system 3 for a projection device (not shown), the schematic diagram of which is shown in FIG. 3 . The projection device includes a light source system 3 and an imaging system (not shown). The light source system 3 of the projection device is used to provide a light, and output the light to the imaging system, so that the imaging system can display the light as a projection image. The light source system 3 of the first embodiment of the present invention includes a first light source 31 , a light splitting element 32 , two light concentrating elements 33 , a turntable 34 , a light collecting element 35 and a light recycling element 36 .

Please also refer to FIG. 3 , the first light source 31 includes a plurality of blue laser light sources 311 and a plurality of reflectors 313 to provide a plurality of first-wavelength light rays 312 , and the first-wavelength light rays 312 are light within the blue wavelength range. 4 is a schematic diagram of the first light source 31 in FIG. 3 , through the transparent part 314 and the reflective part 316 in the reflector 313 , the light rays 312 of the first wavelength band can be concentrated and emitted in the same direction. Therefore, the light intensity of the first wavelength band light 312 can be enhanced. However, it should be noted that the arrangement of the first light source in the present invention is not limited to the above, and those who are familiar with this technical field can also replace it with other light source structures.

The light-splitting element 32 has a light-splitting part 321 and a reflecting part 322 , wherein the light-splitting part 321 allows the light 312 of the first wavelength band to pass through, and reflects a light 3111 of the second waveband and a light 3112 of the third waveband. The reflection part 322 reflects the first-wavelength light 312 , the second-wavelength light 3111 and the third-wavelength light 3112 . In this embodiment, the light 3111 of the second wavelength band is the light within the green wavelength range, and the light 3112 of the third wavelength band is the light within the red wavelength range. In other words, when the first waveband light 312 (blue light) is projected onto the spectroscopic element 32, it will directly pass through the light splitter 321 or be reflected by the reflector 322; when the second waveband light 3111 (green light) or the third waveband light 3112 (red light ) are projected onto the spectroscopic element 32, they will be reflected by the spectroscopic part 321 and the reflective part 322.

The two light concentrating elements 33 have an optical axis 331 in common, and in this embodiment, each light concentrating element 33 is a convex lens. In other embodiments of the present invention, those skilled in the art can easily deduce other numbers of light concentrating elements, and aspects of light concentrating elements with various types or materials.

Please refer to Fig. 3 and Fig. 5 at the same time, the turntable 34 is arranged on a first side of the optical axis 331, the turntable 34 includes an annular glass sheet and defines a first wave band conversion region 344 and a second wave band on one side surface. The conversion area 346 and a reflection area 342 . The first wavelength conversion region 344 is coated with a green fluorescent material on the glass surface to convert the first wavelength light 312 into the second wavelength light 3111; and the second wavelength conversion region 346 is coated with a red fluorescent material on the glass surface for use In order to convert the first waveband light 312 into a third waveband light 3112; on the back of the glass in these two areas is the coating for the transmission of the first waveband light 312 and the reflection of the second waveband light 3111 and the third waveband light 3112; the reflective area 342 It is to reflect the light 312 of the first wavelength band. The converted second-wavelength light 3111 and third-wavelength light 3112 , as well as the reflected first-wavelength light 312 , will be focused by the light-condensing element 33 . In the present invention, the reflective area can be coated with a reflective material, or directly made of reflective mirrors. In addition, in this embodiment, an area ratio of the first wavelength conversion region 344, the second wavelength conversion region 346, and the reflection region 342 coated on the turntable 34 is 2:5:3; To meet the needs of light source intensity and color performance, moderately adjust the area ratio of each area on the turntable.

The light-collecting element 35 is disposed on a second side of the optical axis 331 , and the light-collecting element 35 is conjugated to the turntable 34 relative to the optical axis 331 , wherein the light-collecting element 35 can be an optical channel or a light-collecting rod.

The operation mechanism of the light source system 3 of this embodiment will be introduced in detail below.

When the blue laser light source 311 of the first light source 31 emits the first-band light 312, all the first-wave light 312 is guided to the same direction by the reflector 313 and passes through the light-splitting part 321 of the light-splitting element 32, and then passes through the light-gathering element 33. The light 312 of the first wavelength band is focused to the reflection area 342 on the turntable 34. At this time, the reflection area 342 will reflect the light 312 of the first wavelength band to pass through the light collecting element 33, and then reflect the light 312 of the first wavelength band through the reflection part 322 of the light splitting element 32, The light collecting element 33 focuses on the light collecting element 35 for light uniformity, and then the light collecting element 35 provides uniform first-wavelength light 312 to the imaging system for imaging.

Since the turntable 34 and the light-collecting element 35 are arranged in a conjugate manner with respect to the optical axis 331, and because the divergence angle of the first waveband light 312 provided by the blue laser light source 311 is small and concentrated, the light reflected by the reflective region 342 on the turntable 34 After passing through the light collecting element 33 , the light ray 312 of the first wavelength band does not go to the spectroscopic part 321 , but only hits the reflecting part 322 for reflection, and is focused on the light collecting element 35 that is conjugated to the turntable 34 .

Similarly, when the blue laser light source 311 of the first light source 31 emits the first-band light 312, all the first-wave light 312 is guided to the same direction by the reflector 313, and then passes through the beam splitter 321 and passes through the light-condensing element 33 to guide the first-wave light 312 to the same direction. The first wavelength band light 312 is focused to the first wavelength band conversion area 344 on the turntable 34. At this time, the first wavelength band light 312 will be converted into the second wavelength band light 3111 and return to pass through the light collecting element 33, and then pass through the light splitting part 321 and the light splitting part 32 of the light splitting element 32. After reflection by the reflector 322, the light collecting element 33 focuses the light 3111 of the second wavelength band to the light collecting element 35 for uniform light, and then the light collecting element 35 provides the uniform light 3111 of the second wave band to the imaging system for imaging.

It should be particularly noted here that, after the first-wavelength light 312 passes through the first-wavelength conversion region 344, a small portion of the first-wavelength light 312 passes through the first-wavelength conversion region 344, resulting in waste of light. Therefore, the turntable 34 A light recycling element 36 is arranged at the rear to reflect the first-wavelength light 312 passing through the first-wavelength conversion region 344 and focus it to the first-wavelength conversion region 344 to be converted into a second-wavelength light 3111 again, which is emitted to the The light splitting part 321 and the reflecting part 322 reflect, and are focused by the light collecting element 33 to the light collecting element 35 to be provided to the imaging system for imaging. In this way, light can be recycled and used to avoid light loss. In this embodiment, the light recovery element 36 is a spherical reflector.

Using the principle similar to the above, when the blue laser light source 311 of the first light source 31 emits the first waveband light 312, all the first waveband light 312 is guided to the same direction by the reflector 313, then passes through the spectroscopic part 321 and passes through the concentrator The element 33 focuses the first-wavelength light 312 to the second-wavelength conversion area 346 on the turntable 34, at this time the first-wavelength light 312 will be converted into the third-wavelength light 3112 and return to the light that passes through the light-condensing element 33 and then through the light-splitting element 32 part 321 and reflective part 322, the light-collecting element 33 focuses the third-waveband light 3112 to the light-collecting element 35 for uniform light, and then the light-collecting element 35 provides the uniform third-waveband light 3112 to the imaging system for imaging.

Finally, the light-collecting element 35 outputs the first-wavelength light 312 belonging to the blue light band, the second-wavelength light 3111 belonging to the green light band, and the third-wavelength light 3112 belonging to the red light band to the imaging system, so that the imaging system passes through the aforementioned The first-wavelength light 312 , the second-wavelength light 3111 and the third-wavelength light 3112 perform imaging, project and display a projection image.

The second embodiment of the present invention is a light source system 4 for a projection device (not shown), the schematic diagram of which is shown in FIG. 6 . The projection device includes a light source system 4 and an imaging system (not shown). The light source system 4 of the projection device is used to provide a light, and output the light to the imaging system, so that the imaging system can image the light to display a projected image. The light source system 4 of the second embodiment of the present invention includes a first light source 41 , a light splitting element 42 , two light concentrating elements 43 , a turntable 44 , a light collecting element 45 , a light recycling element 46 and a second light source 47 . The elements of this embodiment are similar to those of the previous embodiment, and will be described in detail as follows.

Please also refer to FIG. 4 , the first light source 41 includes a plurality of blue laser light sources 411 and a plurality of reflectors 413 for providing a plurality of first-wavelength light rays 412 , and the first-wavelength light rays 412 are light within the blue wavelength range. Similarly, the first light source 41 also adopts a design similar to that of the first light source 31 in the previous embodiment, so as to enhance the light intensity of the first waveband light 412 .

The second light source 47 includes a red light emitting diode (Light Emitting Diode, LED) for providing a third-wavelength light 471, and the third-wavelength light 471 is light within the red wavelength range.

The light splitting element 42 has a first light splitting part 421 and a second light splitting part 422, wherein the first light splitting part 421 allows the first waveband light 412 and a third waveband light 471 to pass through, and reflects a second waveband light 4111; The two beam splitters 422 allow the third-wavelength light 471 to pass through, and reflect the first-wavelength light 412 and the second-wavelength light 4111 , wherein the second-wavelength light 4111 in this embodiment is within the green wavelength range. In other words, when the light 412 (blue light) of the first wavelength band is projected onto the spectroscopic element 42, it will directly pass through the first spectroscopic part 421 or be reflected by the second spectroscopic part 422; When the light ray 4112 (red light) of the third wavelength band is projected onto the light-splitting element 42, it will directly pass through the first light-splitting portion 421 and the second light-splitting portion 422 .

The two light concentrating elements 43 have an optical axis 431 in common, and in this embodiment, each light concentrating element 43 is a convex lens. In other embodiments of the present invention, those skilled in the art can easily deduce other numbers of light concentrating elements, and aspects of light concentrating elements with various types or materials.

Please refer to Fig. 7 again, the turntable 44 is arranged on a first side of the optical axis 431, the turntable 44 comprises an annular glass sheet and defines a band conversion area 441 and a reflection area 442 on one side surface, and the band conversion area 441 Coating a green fluorescent material on the surface of the glass to convert the first-wavelength light 412 into the second-wavelength light 4111; on the back of the glass in this area is a coating that transmits the first-wavelength light 412 and reflects the second-wavelength light 4111; The reflection area 442 reflects the light 412 of the first wavelength band. Both the converted light 4111 of the second wavelength band and the reflected light 412 of the first wavelength band will be focused by the light concentrating element 43 . An area of the wavelength conversion region 441 and an area of the reflective region 442 are related to a duty cycle of the second light source 47 . In the present invention, the reflective area can be coated with a reflective material, or directly made of reflective mirrors.

The light collecting element 45 is disposed on a second side of the optical axis 431 , and the light collecting element 45 is disposed conjugately with the turntable 44 relative to the optical axis 431 , wherein the light collecting element 45 can be an optical channel or a light collecting rod.

The operation mechanism of the light source system 4 of this embodiment will be introduced in detail below.

When the first light source 41 is in the on state and the second light source 47 is in the off state, the blue laser light source 411 of the first light source 41 emits light rays 412 of the first wavelength band, and all the light rays 412 of the first wavelength band are guided to the same direction by the reflector 413 After passing through the first light splitting part 421 of the light splitting element 42, the light of the first wavelength band 412 is focused to the reflective area 442 on the turntable 44 by the light concentrating element 43. The light 412 of the first wavelength band is reflected by the second light-splitting part 422 of the light-splitting element 42, and then focused to the light-collecting element 45 by the light-gathering element 43 for uniform light, and then the light-collecting element 45 provides uniform light to provide the first The wavelength band light 412 is sent to the imaging system for imaging.

Since the turntable 44 and the light-collecting element 45 are arranged in a conjugate manner with respect to the optical axis 431, and because the divergence angle of the first waveband light 412 provided by the blue laser light source 411 is small and concentrated, the light reflected by the reflective region 442 on the turntable 44 After passing through the light collecting element 43 , the light of the first wavelength band 412 does not go to the first light splitting portion 421 , but is only reflected by the second light splitting portion 422 and focused on the light collecting element 45 that is conjugated to the turntable 44 .

Similarly, when the first light source 41 is on and the second light source 47 is off, the blue laser light source 411 of the first light source 41 emits light rays 412 of the first waveband, and all the light rays 412 of the first waveband are guided by the reflector 413 In the same direction, the light 412 of the first wavelength band is then focused to the band conversion area 441 on the turntable 44 through the first beam splitting part 421 and then the light condensing element 43. Return through the light collecting element 43, and then reflect by the first light splitting part 421 and the second light splitting part 422 of the light splitting element 42. The optical element 45 provides the uniform light 4111 of the second wavelength band to the imaging system for imaging.

Similar to the previous embodiment, a light recovery element 46 is also arranged behind the turntable 44 to reflect the first waveband light 412 passing through the wavelength conversion area 441, and to reflect the first waveband light 412 penetrating through the waveband conversion area 441, so as to Achieve light recycling and avoid light loss.

When the first light source 41 is off and the second light source 47 is on, the light 471 of the third wavelength band is directly provided by the second light source 47, and the light 471 of the third wave band passes through the light splitting element 42 and is focused by the light concentrating element 43. To the light collecting element 45, the light 471 of the third wavelength band is provided to the imaging system for imaging.

Finally, the light-collecting element 45 outputs the first-wavelength light 412 belonging to the blue light band, the second-wavelength light 4111 belonging to the green light band, and the third-wavelength light 471 belonging to the red light band to the imaging system, so that the imaging system passes through the aforementioned The first-wavelength light 412 , the second-wavelength light 4111 and the third-wavelength light 471 are imaged, projected and displayed as a projection image.

The number and position of the elements in the above-mentioned embodiments can be adjusted according to the needs. For example, as in the first embodiment, a plurality of light-gathering elements 35 can be added to make the first waveband light 312 more concentrated on the turntable 34; the turntable The 34 can also be coated with phosphors of other colors to achieve different imaging color requirements, so that the colors can be more vivid, color-developed or increase brightness; in addition, the light recycling element 36 can also be removed to reduce manufacturing costs and volume. In the second embodiment, a plurality of light-gathering elements 43 can be added, so that the light 412 of the first wavelength band can be more concentrated on the turntable 44, and the light 471 of the third waveband can also be focused on the light-gathering element 45; The light source 47 uses a red laser light source instead, so that the third waveband light 471 is more concentrated; and the turntable 44 can also be coated with phosphors of other colors, so that the color after imaging can be more vivid, color-developed or increase brightness; in addition, The light recycling element 46 can also be removed.

In summary, the light source system of the present invention can use an independent blue laser light source and a wavelength conversion region with red fluorescent material and green fluorescent material, or use an independent blue laser light source, red light emitting diode And the wavelength conversion region with green fluorescent material replaces the method of using a single light source to project to the color wheel, and can effectively increase the light intensity of the light source system; and, with the light source system of the present invention, it passes through blue light-emitting diodes and has green The role of the wavelength conversion region of the fluorescent material is used to replace a green light-emitting diode to generate green light, thereby increasing the intensity of the green light source. The problem of low green luminous efficiency due to the use of green light-emitting diodes in the existing light source system will be reduced. no longer exists. In this way, through the light source system of the present invention, the problems existing in the existing projection device can be greatly improved.

The above-mentioned embodiments are only used to illustrate the implementation of the present invention and explain the technical features of the present invention, and are not intended to limit the scope of protection of the present invention. Any changes or equivalence arrangements that can be easily accomplished by those skilled in the art fall within the scope of the present invention, and the protection scope of the present invention should be based on the scope of the patent application.

Claims (22)

1. a light-source system is characterized in that, comprises:

One first light source provides one first wave band light;

One beam splitter;

At least one collective optics has an optical axis;

One rotating disk has an at least one wave band transition region and a reflector space, and this rotating disk is arranged at one first side of this optical axis; And

One light collecting element be arranged at one second side of this optical axis, and this light collecting element is with respect to this optical axis and this rotating disk conjugation setting;

After wherein this first wave band light reaches this at least one collective optics through this beam splitter, focus on this at least one wave band transition region or this reflector space;

When this first band of light line focus during in this at least one wave band transition region, this first wave band light converts one second wave band light into, focuses to this light collecting element by this at least one collective optics again;

When this first band of light line focus during in this reflector space, this this first wave band light of reflector space reflection focuses to this light collecting element by this at least one collective optics again.

2. light-source system according to claim 1 is characterized in that, this first light source comprises a plurality of blue laser light sources, and this first wave band light is a blue ray.

3. light-source system according to claim 2 is characterized in that, this first light source also comprises a plurality of catoptrons.

4. light-source system according to claim 2 is characterized in that, this second wave band light is a green light.

5. light-source system according to claim 4; It is characterized in that; This at least one wave band transition region comprises one first wave band transition region and one second wave band transition region, and when this first band of light line focus during in this first wave band transition region, this first wave band light converts this second wave band light into; When this first band of light line focus during in this second wave band transition region, this first wave band light converts a triband light into.

6. light-source system according to claim 5 is characterized in that this triband light is a red light.

7. light-source system according to claim 5 is characterized in that, this first wave band transition region and this second wave band transition region are coated with a green fluorescent material and a red fluorescence material respectively.

8. light-source system according to claim 5 is characterized in that, an area ratio of this first wave band transition region, this second wave band transition region and this reflector space is 2: 5: 3.

9. light-source system according to claim 5; It is characterized in that; This light-source system also comprises a light recycling member; Make this first band of light line reflection that penetrates this first wave band transition region and focus to this first wave band transition region and convert this second wave band light to, and make this first band of light line reflection that penetrates this second wave band transition region and focus to this second wave band transition region and convert this triband light to.

10. light-source system according to claim 6; It is characterized in that; This beam splitter has a spectrum part and a reflecting part; Wherein this spectrum part allow this first wave band light through and reflect this second wave band light and this triband light, this reflecting part reflection this first wave band light, this second wave band light and this triband light.

11. light-source system according to claim 10; It is characterized in that; This at least one collective optics makes this first band of light line focus through this spectrum part on this at least one wave band transition region or this reflector space, and will through this second wave band light of this spectrum part reflection and this triband light with through this first wave band light, this second wave band light and this triband light focusing of this reflecting part reflection in this light collecting element.

12. light-source system according to claim 4 is characterized in that, also comprises a secondary light source, so that a triband light to be provided.

13. light-source system according to claim 12 is characterized in that, this secondary light source comprises a plurality of red light-emitting diodes, and this triband light is a red light.

14. light-source system according to claim 12 is characterized in that, this at least one wave band transition region is coated with a green fluorescent material.

15. light-source system according to claim 13; It is characterized in that; This light-source system also comprises a light recycling member, makes this first band of light line reflection that penetrates this at least one wave band transition region and focuses to this at least one wave band transition region and convert this second wave band light to.

16. light-source system according to claim 13; It is characterized in that; This beam splitter has one first spectrum part and one second spectrum part; Wherein this first spectrum part allow this first wave band light and this triband light through and reflect this second wave band light, this second spectrum part allow this triband light through and reflect this first wave band light and this second wave band light.

17. light-source system according to claim 16; It is characterized in that; This at least one collective optics makes this first band of light line focus through this first spectrum part on this at least one wave band transition region or this reflector space; And will through this second wave band light of this first spectrum part reflection with through this first wave band light of this second spectrum part reflection and this second band of light line focus in this light collecting element, and with this triband light focusing in this light collecting element.

18. light-source system according to claim 12 is characterized in that, an area of this at least one wave band transition region is relevant with a work period of this secondary light source with an area of this reflector space.

19., it is characterized in that this at least one collective optics comprises two collective opticses according to claim 11 or 17 described light-source systems, respectively this collective optics is convex lens.

20. light-source system according to claim 1 is characterized in that, this light collecting element is an optical channel or a light harvesting post.

21. a projection arrangement is characterized in that, comprises:

A kind of light-source system according to claim 1 is to provide a light; And

One imaging system, this light that this light-source system is provided is carried out to picture.

22. projection arrangement according to claim 21 is characterized in that, this light comprises this first wave band light, this second wave band light and a triband light.

Images