CN207318919U - Light-source system and optical projection system - Google Patents

Abstract

The utility model relates to a light source system and a projection system. The light source system includes a cooling device, a light source array, a reflection array and a first reflection device, the cooling device includes a first cooling plate and a second cooling plate, and the light source array includes a first cooling plate arranged on the first cooling plate A light source array and a second light source array arranged on the second cooling plate, the first reflecting device includes a first reflector and a second reflector, and the excitation light emitted by the first light source array is reflected by the reflective array to the first reflector, the excitation light emitted by the second light source array is reflected by the reflector array to the second reflector, and the first reflector and the second reflector can be within a predetermined range Independently adjust the optical path of the respectively reflected excitation light.

Description

Light source system and projection system

technical field

The utility model relates to the field of optical technology, in particular to a light source system and a projection system.

Background technique

At present, laser light sources have been widely used in display (such as projection) and lighting fields. Due to the advantages of high energy density and small etendue, laser light sources have gradually replaced bulbs and LEDs in the field of high-brightness light sources. light source. Among them, the light source system that uses the first light source to excite the phosphor to generate the required light (such as the blue laser to excite the yellow phosphor to generate the yellow light) has become the most widely used light source system due to its advantages of high light efficiency, good stability, and low cost. mainstream. How to improve the luminous efficiency of the light source system as much as possible and prevent the color coordinates of the light source system from changing is an urgent problem to be solved at present.

Utility model content

In view of this, it is necessary to provide a light source system with high luminous efficiency and stable color coordinates and a projection device using the above light source system.

A light source system, comprising a cooling device, a light source array, a reflection array and a first reflection device, the cooling device includes a first cooling plate and a second cooling plate, the light source array includes a first cooling plate arranged on the first cooling plate A light source array and a second light source array arranged on the second cooling plate, the first reflecting device includes a first reflector and a second reflector, the excitation light emitted by the first light source array is reflected by the reflective array reflected to the first reflector, the excitation light emitted by the second light source array is reflected to the second reflector by the reflective array, and the first reflector and the second reflector can be within a predetermined Independently adjust the optical path of the respectively reflected excitation light within the range.

A projection system adopts the above-mentioned light source system.

The light source system provided by the utility model has the first reflector and the second reflector, and the first reflector and the second reflector are respectively used to control the first light source array and the second reflector. The excitation light emitted by the light source array is adjusted independently of each other, so as to ensure that the excitation light reaches the predetermined position of the dichroic diaphragm, thereby improving the efficiency of the light source system or preventing the color coordinates of the light source system from changing.

Description of drawings

Fig. 1 is a schematic structural diagram of a light source system according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the light source system shown in Fig. 1 in an ideal working state.

FIG. 3 is a schematic structural diagram of a light splitting film in the light source system shown in FIG. 1 .

Fig. 4 is a schematic structural diagram of a light source system according to a second embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a dichroic diaphragm of the light source system shown in FIG. 4 .

Description of main component symbols

Light source system 100, 200

Cooling unit 10, 20

First cooling plate 101, 201

first surface 1011,

Second cooling plate 102, 202

second surface 1021

light source array 11, 21

First light source array 111, 211

Second light source array 112, 212

Light source unit 113

Light source 114

Collimation device 115

Reflect array 12, 22

First reflective array 121, 221

Mirror 1211, 1221

Second reflective array 122, 222

First reflector 13, 23

First reflector 131, 231

Second mirror 132, 232

Concentrator 14

Second reflector 15

Relay lens 16

Third reflector 17

Second concentrator 18

Homogenizer 19

Dichroic diaphragm 110, 29

Transmissive area 1101

Reflective area 1102

Light collecting device 120

color wheel 130

First concentrating device 24

The first uniform light device 25

Second reflector 26

Second concentrator 27

Third reflector 28

First color wheel 210

First light collector 220

Second color wheel 230

Second light collector 240

The third concentrating device 250

Homogenizing device 260

The following specific embodiments will further illustrate the utility model in conjunction with the above-mentioned accompanying drawings.

Detailed ways

Please refer to Fig. 1 and Fig. 2 at the same time, wherein Fig. 1 is a schematic structural view of the light source system according to the first embodiment of the present invention; Fig. 2 is a schematic structural view of the light source system shown in Fig. 1 in an ideal working state. The light source system 100 includes a cooling device 10, a light source array 11, a reflection array 12, a first reflection device 13, a light collection device 14, a second reflection device 15, a relay lens 16, a third reflection device 17, a second light collection device device 18 , uniform light device 19 , light splitting film 110 , light collection device 120 and the color wheel 130 .

The cooling device 10 includes a first cooling plate 101 , a second cooling plate 102 and a heat exchanger (not shown). The heat exchanger communicates with the first cooling plate 101 and the second cooling plate 102 and receives heat transferred from the first cooling plate 101 and the second cooling plate 102 . The first cooling plate 101 and the second cooling plate 102 are arranged opposite to each other. The cooling device 10 is used to cool down the light source array 11 .

The first cooling plate 101 is a flat structure. The first cooling plate 101 is connected to the heat exchanger, and a side of the first cooling plate 101 facing the direction of the second cooling plate 102 is connected to the light source array 11 .

The second cooling plate 102 is also a flat plate structure. The second cooling plate 102 is also connected to the heat exchanger, and a side of the second cooling plate 102 facing the direction of the first cooling plate 101 is connected to the light source array 11 . That is to say, the first cooling plate 101 and the second cooling plate 102 are disposed opposite to each other, and the light source array 11 disposed on the first cooling plate 101 is disposed opposite to the light source array 11 disposed on the second cooling plate 102 . Ideally, both the second cooling plate 102 and the first cooling plate 101 are parallel to each other on a certain plane. However, in the actual manufacturing process, the second cooling plate 102 and the first cooling plate 101 have tolerances in the manufacturing or installation process, so usually the second cooling plate 102 and the first cooling plate 101 are Not always in the ideal position.

The light source array 11 is disposed on the cooling device 10 . Specifically, the light source array 11 includes a first light source array 111 and a second light source array 112 .

The first light source array 111 is disposed on the first cooling plate 101 . Specifically, the first light source array 111 is disposed on a side of the first cooling plate 101 facing the second cooling plate 102 . For ease of description, the side of the first cooling plate 101 facing the second cooling plate 102 is named as the first surface 1011 . The first light source array 111 includes a plurality of light source units 113 . The plurality of light source units 113 are distributed on the first surface 1011 in an array.

The light source unit 113 includes a light source 114 and a collimator 115 .

The light source 114 is disposed on the first surface 1011 of the first cooling plate 101 . When the light emitting source 114 is in working state, the heat emitted by it will be transmitted to the first cooling plate 101 , thereby reducing its operating temperature and improving the luminous efficiency of the light emitting source 114 . The light source 114 may be a laser light source or a light emitting diode. In this embodiment, the light source 114 is a laser light source, and the excitation light emitted is blue excitation light. Certainly, in other implementation manners, the light emitting source 114 can also be other types of light sources, and the excitation light emitted by it can also be in other colors, which is not limited in the present invention.

The collimating device 115 is arranged on the optical path of the excitation light emitted by the light emitting source 114 . The collimating device 115 is used to convert the divergent beam emitted by the light source 114 into a parallel beam. In other words, the collimating device 115 converts the divergent excitation light emitted by the light source 114 into a parallel beam. Excitation light. It can be understood that because the light source unit 113 includes the collimating device 115 , the light source unit 113 can emit collimated excitation light.

Therefore, the excitation light emitted by the first light source array 111 is a plurality of excitation lights emitted by the plurality of light source units 113 arranged parallel to each other. In this embodiment, the excitation light emitted by the plurality of light source units 113 is arranged parallel to the first surface 1011 of the first cooling plate 101 .

The second light source array 112 is disposed on the second cooling plate 102 . Specifically, the second light source array 112 is disposed on a side of the second cooling plate 102 facing the first cooling plate 101 . For ease of description, the side of the second cooling plate 102 facing the first cooling plate 101 is named as the second surface 1021 . The second light source array 112 also includes a plurality of light source units 113 . The plurality of light source units 113 are distributed on the second surface 1021 in an array. The structure of the light source unit 113 disposed on the second surface 1021 of the second light source array 112 is exactly the same as that of the light source unit 113 disposed on the first surface 1011 of the first light source array 111 . In other embodiments, the structure of the light source unit 113 disposed on the second surface 1021 may be different from that of the light source unit 113 disposed on the first surface 1011 , which is not limited in the present invention. Of course, the excitation light emitted by the second light source array 112 is also a plurality of excitation lights arranged parallel to each other, and the excitation light emitted by the second light source array 112 is perpendicular to the second surface 1021 .

The reflective array 12 is located on the optical path of the excitation light emitted by the light source array 11 , and is used for compressing the light spot of the excitation light emitted by the light source array 11 and emitting it. The reflective array 12 includes a first reflective array 121 and a second reflective array 122 .

The first reflective array 121 is disposed on the optical path where the excitation light emitted by the first light source array 111 is located. The first reflective array 121 includes a plurality of reflective mirrors 1211 . The plurality of reflectors 1211 are respectively arranged on the optical path where the excitation light emitted by the plurality of light source units 113 of the first light source array 111 is located, and the plurality of reflectors 1211 and the plurality of light source units 113 are One to one corresponding setting. The reflector 1211 receives the parallel excitation light emitted by the corresponding light source unit 113 , and reflects the excitation light reaching the surface of the reflector 1211 to the first reflection device 13 . In order to prevent the reflection mirrors 1211 from blocking each other when reflecting the excitation light, the distances between the plurality of reflection mirrors 1211 and the first cooling plate 101 are different. Specifically, the distance between the reflector 1211 away from the first reflector 13 and the first cooling plate 101 is small; the distance between the reflector 1211 close to the first reflector 13 and the first cooling plate 101 larger; the reflector 1211 at the same distance from the first reflector 13 is at the same distance from the first cooling plate 101 .

The second reflection array 122 is disposed on the optical path where the laser light emitted by the second light source array 112 is located. Similarly, the second reflection array 122 also includes a plurality of second reflection mirrors 1221 . The plurality of second reflectors 1221 are respectively arranged on the optical path where the excitation light emitted by the plurality of light source units 113 of the second light source array 112 is located, and the plurality of second reflectors 1221 and the plurality of The light source units 113 are provided in one-to-one correspondence. The second reflecting mirror 1221 receives the parallel excitation light emitted by the corresponding light source unit 113 , and reflects the excitation light reaching the surface of the second reflecting mirror 1221 to the first reflecting device 13 . Similar to the structure of the first reflection array 121, in order to prevent the second reflection mirrors 1221 from blocking each other when reflecting the excitation light, the distance between the plurality of second reflection mirrors 1221 and the second cooling plate 102 is not same. Specifically, the distance between the second reflector 1221 away from the first reflector 13 and the second cooling plate 102 is small; the distance between the second reflector 1221 close to the first reflector 13 and the second cooling The distance from the plate 102 is relatively large; the distance from the second reflector 1221 to the second cooling plate 102 is the same as that of the second reflector 1221 at the same distance from the first reflector 13 . In this embodiment, the second light source array 32 is arranged symmetrically with the first light source array 31 ; meanwhile, the structures of the reflection mirror 1211 and the reflection mirror 1221 are also the same. Certainly, in other implementation manners, the structure of the reflector 1211 and the reflector 1221 may also be different, which is not limited in the present invention.

The first reflecting device 13 is located on the optical path where the excitation light reflected by the reflective array 12 is located. Specifically, the first reflecting device 13 includes a first reflecting mirror 131 and a second reflecting mirror 132 . The first reflector 131 and the second reflector 132 are independent of each other, and the first reflector 131 and the second reflector 132 can be adjusted independently.

The first reflective mirror 131 is used to receive the excitation light reflected by the first reflective array 121 , and reflect the excitation light reaching the surface of the first reflective mirror 131 to the light concentrating device 14 . The first reflector 131 is not perpendicular to the excitation light reaching its surface. In other words, the excitation light is obliquely incident on the first mirror 131 . The first mirror 131 can be independently adjusted within a predetermined range, so that the optical path of the excitation light reflected by it can be adjusted accordingly.

The second reflective mirror 132 is used to receive the excitation light reflected by the second reflective array 122 , and reflect the excitation light reaching the surface of the second reflective mirror 132 to the light concentrating device 14 . Similar to the first reflector 131 , the second reflector 132 is not perpendicular to the excitation light reaching its surface. In other words, the excitation light is obliquely incident on the second mirror 132 . The second mirror 132 can also be adjusted within a predetermined range, so that the optical path of the excitation light reflected by it can be adjusted accordingly. The reflection surfaces of the second reflector 132 and the first reflector 131 may abut against each other to form an entire reflective plane. Of course, the second reflector 132 and the first reflector 131 can also be adjusted independently of each other according to actual needs, and at this time, the two may not be on the same plane.

In order to describe the structure of the light source system 100 more clearly, the focusing device 14, the second reflecting device 15, the relay lens 16, the third reflecting device 17, the second focusing device The light device 18 and the light homogenizing device 19 are named as light path adjustment components. The optical path adjustment component is used to adjust the optical path and light spot of the excitation light emitted by the first reflecting device 13 , and output the adjusted excitation light to the spectroscopic diaphragm 110 .

Specifically, the light concentrating device 14 is located on the optical path where the excitation light reflected by the first reflecting device 13 is located, and it is used for converging the excitation light passing through the light concentrating device 14, and converging the converging excitation light Light shines through.

The second reflecting device 15 is arranged on the optical path of the excitation light transmitted by the light concentrating device 14 . The second reflecting device 15 is used to reflect the excitation light reaching its surface to the relay lens 16 . In this embodiment, the second reflecting device 15 is used to reflect blue excitation light.

The relay lens 16 is located on the optical path of the excitation light emitted by the second reflecting device 15 . The second reflecting device 15 is used for parallel adjustment of the excitation light reaching the surface thereof, so as to make parallel adjustment of the excitation light reaching the relay lens 16 .

The third reflecting device 17 is located on the optical path of the excitation light transmitted by the relay lens 16 . The third reflecting device 17 is used for reflecting the excitation light reaching its surface, and reflecting the reflected excitation light to the second light concentrating device 18 . In this embodiment, the third reflecting device 17 is also used to reflect the blue excitation light.

The second concentrating device 18 is arranged on the optical path of the excitation light reflected by the third reflecting device 17 . The second light concentrating device 18 is used for converging the excitation light received by it, and transmitting the converging excitation light.

The homogenizing device 19 is arranged on the optical path where the excitation light transmitted by the second concentrating device 18 is located. The dodging device 19 is used for dodging the excitation light emitted by the second concentrating device 18 .

Please refer to FIG. 3 , the dichroic film 110 is on the optical path where the excitation light emitted by the light homogenizing device 19 is located. The light splitting film 110 includes a transmissive area 1101 and a reflective area 1102 . The transmissive area 1101 is disposed in the middle of the light splitting film 110 . The reflective area 1102 is disposed around the transmissive area 1101 .

The transmissive area 1101 receives the excitation light emitted from the light homogenizing device 19 , and transmits the excitation light reaching the transmissive area 1101 .

The reflective area 1102 receives the excitation light emitted by the dodging device 19 and reflects the excitation light reaching the reflective area 1102 .

In an ideal situation, all the excitation light emitted by the homogenizing device 19 is transmitted through the transmission region 1101 , and at this time, the efficiency of the light source system 100 is the highest. However, due to tolerances in the actual manufacturing process of the product, there will always be a part of the excitation light emitted by the light homogenizing device 19 irradiated to the reflective area 1102 and reflected by the reflective area 1102 . At this time, the position of the excitation light irradiated to the spectroscopic film 110 can be adjusted by adjusting the first reflecting device 13 to increase the transmission efficiency as much as possible.

The light collection device 120 is arranged on the optical path where the excitation light transmitted by the transmission area 1101 is located, the light collection device 120 receives the excitation light transmitted from the transmission area 1101, and transmits the received excitation light .

The color wheel 130 is disposed on the optical path where the excitation light transmitted by the light collection device 120 is located. The color wheel 130 receives the excitation light transmitted by the light collecting device 120 , and is excited by the excitation light to generate the stimulated light. The received light is reflected by the color wheel 130 into the light collecting device 120 , collected by the light collecting device 120 , and reflected by the light splitting film 110 to exit. A red wavelength conversion material, a green wavelength conversion material, a yellow wavelength conversion material, etc. may be disposed on the color wheel 130 . When the red wavelength conversion material and the green wavelength conversion material are arranged on the color wheel 130 , the color wheel 130 emits the red converted light and the green converted light in time sequence.

In order to understand the working process and adjustment principle of the light source system 100 more clearly, the working process and adjustment principle of the light source system 100 will be described as a whole below.

The first light source array 111 is disposed on the first surface 1011 of the first cooling plate 101 ; and the excitation light emitted by the first light source array 111 is perpendicular to the first surface 1011 . The second light source array 112 is disposed on the second surface 1021 of the second cooling plate 102 , and the excitation light emitted by the second light source array 112 is perpendicular to the second surface 1021 .

When the light source system 100 is in an ideal working state, the first surface 1011 of the first cooling plate 101 and the second surface 1021 of the second cooling plate 102 are on respective predetermined planes, and the first The surface 1011 and the second surface 1021 are parallel to each other. At this time, the excitation light sequentially passes through the optical path adjustment component and then enters the spectroscopic diaphragm 110, and all the excitation light that reaches the spectroscopic diaphragm 110 is at the position where the transmission region 1101 of the spectroscopic diaphragm 110 is located. . In other words, at this time, all the excitation light incident on the light splitting film 110 will be transmitted through the transmission region 1101 . The excitation light transmitted by the transmission region 1101 will further pass through the light collecting device 120 and finally reach the color wheel 130 . The color wheel 130 is excited by the excitation light to generate the stimulated light, and the amount of the stimulated light generated by the color wheel 130 is related to the amount of the excitation light received by the color wheel 130 . That is, the more excitation light the color wheel 130 receives, the greater the amount of stimulated light it is excited to generate.

Since the first cooling plate 101 and the second cooling plate 102 have tolerances in the manufacturing and assembly process, it is usually difficult for the light source system 100 to be in an ideal state in practical applications. At this time, the excitation light that is incident on the spectroscopic diaphragm 110 after passing through the optical path adjustment component cannot all be within the range where the transmission region 1101 is located, and a part of the excitation light that reaches the spectroscopic diaphragm 110 will reach the reflection The area where the area 1102 is located is thus reflected. In this case, the excitation light received by the color wheel 130 becomes smaller, and thus the stimulated light generated is correspondingly reduced. This situation reduces the efficiency of the light source system 100 .

In order to improve the efficiency of the light source system 100 , it is usually necessary to adjust the first reflector 13 accordingly, so as to compensate for the impact on the efficiency of the light source system 100 caused by tolerances in the manufacturing and assembly process. In the related art, the first reflecting device 13 is an integral reflector, and the integral reflector simultaneously receives the excitation light reflected from the first reflective array 121 and the second reflective array 122 . When there is a tolerance in the first cooling plate 101 or the second cooling plate 102, the angles of the excitation light emitted by the first light source array 111 and the second light source array 112 will change accordingly, and the corresponding The angles of the excitation light reflected by the first reflective array 121 and the second reflective array 122 will change accordingly. Because the integral reflector has an integral structure, the integral reflector can only be adjusted as a whole, and the first cooling plate 101 and the second cooling plate 102 cannot be adjusted individually. When only the excitation light reflected by the first reflective array 21 or the excited light reflected by the second reflective array 22 needs to be adjusted, the integrated reflector can only be adjusted as a whole, so it can only be adjusted to one efficiency As large a position as possible, but cannot be precisely adjusted respectively, maximizes the efficiency of the light source system 100 .

However, in the present invention, the first light source array 11 includes a first reflector 131 and a second reflector 132 . Wherein the first reflector 131 is used to receive the excitation light reflected from the first reflective array 121, when there is a tolerance in the first cooling plate 101, the angle of the excitation light emitted by the first light source array 111 will be corresponding , the angle of the excitation light reflected by the first reflective array 121 will change correspondingly. The first reflector 131 can be adjusted accordingly according to the angle change of the excitation light reflected by the first reflective array 121, so as to compensate for the influence of the tolerance on the light source system 100 and improve the efficiency of the light source system 100 .

The working principle of the second reflector 132 is similar to that of the first reflector 131, and it is used to adjust the angle change of the excitation light emitted by the second reflective array 122 caused by the tolerance of the second cooling plate 102. , so as to improve the working efficiency of the light source system 100, which is not limited in the present invention.

Embodiment two

Please refer to FIG. 4 , which is a schematic structural diagram of a light source system according to a second embodiment of the present invention.

The light source system 200 includes a cooling device 20, a light source array 21, a reflective array 22, a first reflective device 23, a first light concentrating device 24, a first uniform light device 25, a second reflective device 26, and a second light concentrating device 27 , the third reflecting device 28, the dichroic diaphragm 29, the first color wheel 210, the first light collecting device 220, the second color wheel 230, the second light collecting device 240, the third light collecting device 250 and the second uniform light device 260.

The cooling device 20, the light source array 21, the reflection array 22 and the first reflection device 23 in this embodiment are the same as the cooling device 10, the light source array 11, the The reflective array 12 is similar in structure and connection to the first reflective device 13 . The cooling device 20 also includes a first cooling plate 201, a second cooling plate 202 and a heat exchanger (not shown); the light source array 21 includes a first light source array 211 and a second light source array 212; the reflective array 22 includes a first reflection array 221 and a second reflection array 222; the first reflection device 23 includes a first reflection mirror 231 and a second reflection mirror 232, so the cooling device 20 and the light source in this implementation The structures and working modes of the array 21 , the reflective array 22 and the first reflective device 23 will not be described again.

In addition, in this embodiment, the excitation light emitted by the light source array 21 is also blue excitation light. Certainly, in other implementation manners, the excitation light emitted by the light source array 21 may also be of other colors, which is not limited in the present invention.

In order to describe the structure of the light source system 200 more clearly, the first concentrating device 24, the first uniform light device 25, the second reflecting device 26, the second concentrating device 27 and The third reflecting device 28 is named as an optical path adjustment component.

Similar to the structure in the first embodiment, the optical path adjustment component receives the excitation light reflected from the first reflection device 23, and adjusts the optical path of the excitation light received by the optical path adjustment device according to actual needs, Then the excitation light after optical path adjustment is guided to the light splitting film 29 .

Specifically, the first light concentrating device 24 is used for receiving the excitation light reflected by the first reflection device 23 , and converging the received excitation light to reach the first light homogenizing device 25 . The first uniformity device 25 uniformizes the excitation light and transmits it to the second reflection device 26 . The second reflecting device 26 reflects the excitation light reflected on its surface to the second light concentrating device 27 . The second light concentrating device 27 collects the excitation light reaching the second light concentrating device 27 and transmits it to the third reflecting device 28 . The excitation light that reaches the surface of the third reflection device 28 is reflected to the light splitting film 29 .

Please refer to FIG. 5 , the light splitting film 29 transmits a part of the excitation light reaching its surface and reflects the other part. The light splitting film 29 includes a first light splitting area 291 and a second light splitting area 292 . The first light splitting area 291 is disposed in the middle of the light splitting film 29 , and the second light splitting area 292 is set around the first light splitting area 291 . The area of the second light splitting area 292 is larger than the area of the first light splitting area 291 .

In this embodiment, the first light splitting area 291 is a blue excitation light transmission area, which is used to transmit blue excitation light; the second light splitting area 292 is a yellow excitation light transmission area, while the second light splitting area Region 292 is capable of reflecting blue excitation light. Of course, which color of excitation light is transmitted or reflected by the first light splitting area 291 and the second light splitting area 292 can also be adjusted according to actual needs, which is not limited in the present invention.

The first light collecting device 220 is used to receive the excitation light transmitted by the first spectroscopic region 291, in this embodiment, the excitation light is blue excitation light, and transmit the excitation light to the first Color wheel 210.

The first color wheel 210 receives the excitation light transmitted by the first light collecting device 220 and scatters the excitation light. It can be understood that the first color wheel 210 is a scattering wheel, and in this embodiment, the first color wheel 210 scatters the excitation light and reflects it out. The scattered blue excitation light passes through the first light-collecting device 220 and is transformed into parallel light to irradiate the light-splitting film 29 . The blue excitation light is reflected by the second light splitting area 292 to the third light concentrating device 250 .

The second light collecting device 240 is used to collect the blue excitation light reflected by the second light splitting area 292 , and the second light collecting device 240 may be composed of several lenses.

The second color wheel 230 receives the excitation light transmitted by the second light collecting device 240 , and is excited by the excitation light to generate the stimulated light. In this embodiment, the blue excitation light is converged onto the second color wheel 230 through the second light collecting device 240 . The second color wheel 230 is a fluorescent wheel with yellow fluorescent powder disposed on its surface. The blue excitation light is incident on the surface of the phosphor wheel to excite the yellow phosphor to generate yellow received light, and the yellow received light is reflected and emitted to the second light collecting device 240 . The yellow received light is transformed into parallel light after passing through the second light collecting device 240 and irradiates to the light splitting film 29 . The yellow received light is transmitted from the second light splitting area 292 to the third light concentrating device 250 .

The third light concentrating device 250 is arranged on the optical path where the blue excitation light reflected by the dichroic film 29 and the yellow received light transmitted are located. The third light concentrating device 250 is used to condense the blue excitation light and the yellow stimulated light before emitting to the light homogenizing device 260 .

The light homogenizing device 260 is arranged on the optical path where the received light converged by the third light concentrating device 250 is located. The dodging device 260 is used to receive the received light and perform dodging treatment on the received light.

In order to understand the working process of the light source system 200 more clearly, an overall description of the working process of the light source system 200 is given below.

The structure of the cooling device 20, the light source array 21, the reflective array 22 and the first reflective device 23 is basically the same as that in the first embodiment, and the above-mentioned elements and their interrelationships have been checked in the first embodiment. Detailed elaboration will not be repeated here.

When the light source system 200 is in an ideal working state, similar to the light source system 200 in Embodiment 1, the first surface of the first cooling plate 201 and the second surface of the second cooling plate 202 are at their respective predetermined on the plane, and the first surface and the second surface are parallel to each other. At this time, the excitation light is reflected to the light splitting film 29 after passing through the optical path adjusting component. Wherein the excitation light reaching the dichroic film 29 is transmitted through the first dichroic region 291 of the dichroic film 29 . At this time, the light spot formed by the first light splitting area 291 is not shifted, and the proportion of the blue received light in the light emitted by the light source system 200 and the color coordinates of the light source are in a normal state.

Similar to the situation in Embodiment 1, when there is a tolerance in the manufacture of the first cooling plate 201, the angle of the excitation light emitted by the first light source array 211 will change accordingly, and the corresponding first reflective array 221 The angle of the reflected excitation light changes accordingly. The first reflector 231 can be adjusted accordingly according to the angle change of the excitation light reflected by the first reflective array 121, so as to prevent the light spot on the dichroic diaphragm 29 from shifting, thereby causing the light source system 200 The proportion of blue received light in the emitted light and the color coordinates of the light source are abnormal.

The utility model also provides a projection system (not shown in the figure), the projection system includes a light source system, and the light source system can be the light source device as described in any one of the above embodiments.

In summary, the light source system provided by the present invention has the first reflector and the second reflector, and the first reflector and the second reflector are respectively used to control the first light source array and the excitation light emitted by the second light source array are adjusted independently of each other, so as to ensure that the excitation light reaches the predetermined position of the dichroic diaphragm, thereby improving the efficiency of the light source system or preventing the chromatic aberration of the light source system Coordinates change.

The above embodiments are only used to illustrate the technical solution of the present utility model without limitation. Although the utility model has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solution of the utility model can be modified Or equivalent replacements should not deviate from the spirit and scope of the technical solutions of the present utility model.

Claims (10)

1. A light source system, characterized in that: it includes a cooling device, a light source array, a reflection array and a first reflection device, the cooling device includes a first cooling plate and a second cooling plate, and the light source array includes a The first light source array of the first cooling plate and the second light source array arranged on the second cooling plate, the first reflecting device includes a first reflector and a second reflector, and the excitation emitted by the first light source array The light is reflected by the reflection array to the first reflection mirror, the excitation light emitted by the second light source array is reflected by the reflection array to the second reflection mirror, and the first reflection mirror and the second reflection mirror The mirrors can independently adjust the light paths of the respectively reflected excitation lights within a predetermined range. 2. The light source system according to claim 1, wherein a side of the first cooling plate facing the second cooling plate is a first plane, and the first light source array is arranged on the first plane, A side of the second cooling plate facing the first cooling plate is a second plane, and the second light source array is arranged on the second plane. 3. The light source system according to claim 2, wherein the reflective array comprises a first reflective array and a second reflective array, and each of the first reflective array and the second reflective array comprises a plurality of mirrors , wherein the plurality of reflectors of the first reflective array correspond to the plurality of light source units of the first light source array, and the plurality of reflectors of the second reflective array correspond to the plurality of light source units of the second light source array. Each light source unit is set in one-to-one correspondence. 4. The light source system according to claim 1, further comprising an optical path adjustment component and a light splitting diaphragm, the optical path adjustment component is used to adjust the optical path of the excitation light reflected by the first reflecting device, so The light-splitting diaphragm is used for light-splitting and synthesizing the adjusted excitation light. 5. The light source system according to claim 4, characterized in that: the optical path adjustment component comprises a light concentrating device, a second reflecting device, a relay lens, a third reflecting device, a second light concentrating device and a uniform light device, The excitation light reflected from the first reflector and the second reflector passes through the converging device, the second reflector, the relay lens, the third reflector, the second The light concentrating device and the light homogenizing device reach the light splitting film afterward. 6. The light source system according to claim 5, wherein the light-splitting diaphragm includes a transmission area and a reflection area, the transmission area is arranged in the middle of the light-splitting diaphragm, and the reflection area surrounds the transmission area. The area is set, the transmission area is used to transmit the excitation light; the light source system also includes a color wheel, the color wheel receives the excitation light transmitted by the transmission area, and is excited by the excitation light to generate the excitation light, so The reflective area is used to reflect the excitation light and the subject light. 7. The light source system according to claim 4, wherein the optical path adjustment component comprises a first light concentrating device, a first uniform light device, a second reflecting device, a second light concentrating device and a third reflecting device, The excitation light reflected from the first reflecting mirror and the second reflecting mirror passes through the first concentrating device, the first uniform light device, the second reflecting device, and the second concentrating device sequentially. and the third reflecting device to reach the light splitting film. 8. The light source system according to claim 7, wherein the light splitting film comprises a first light splitting area and a second light splitting area, the first light splitting area is arranged in the middle of the light splitting film, the The second light splitting area is arranged around the first light splitting area. 9. The light source system according to claim 8, wherein the excitation light emitted by the light source array is blue excitation light, the first light splitting area is used to transmit the blue exciting light, and the second light splitting area Used to transmit the yellow stimulated light while reflecting the blue excited light, the light source system further includes a first color wheel and a second color wheel, the first color wheel receives the excited light transmitted by the first light splitting area and converts the The excitation light is scattered; the second color wheel receives the blue excitation light reflected by the second light splitting area and is excited by the excitation light to generate yellow excitation light. 10. A projection system, characterized in that the projection system adopts the light source system according to any one of claims 1-9.