CN113495416B - Light source system and projection apparatus - Google Patents

Abstract

The application discloses light source system and projection equipment belongs to laser projection technical field. The light source system includes: the device comprises a shell, a plurality of laser components, a telescope group and a reflector group, wherein the laser components, the telescope group and the reflector group are assembled on the shell; the laser assemblies are arranged at different positions of the shell, emergent light of the laser assemblies is not parallel completely, the laser assemblies comprise at least one first laser assembly, emergent light of each first laser assembly irradiates the reflector group, and the reflector group reflects light to the light inlet face of the telescope group. The problem of the bigger size of light source system among the correlation technique is solved. The effect of reducing the size of the light source system is achieved.

Description

Light source system and projection apparatus

Technical Field

The application relates to the technical field of laser projection, in particular to a light source system and projection equipment.

Background

Laser projection devices employ a laser light source, which may comprise a single color or multiple color lasers. Typically, laser light sources generate primary colors other than blue light by applying a blue laser as a blue light source and exciting a wavelength conversion device, such as a fluorescent wheel.

When high lumen output, i.e. high brightness, of a laser projection device is sought, more lasers are generally required to increase the excitation power, and thus, higher brightness fluorescent light is generated. However, the gap between the lasers causes the size of a light spot to be large, which brings difficulty in combining beams and light, and the size of the lens in the optical path is also required to be larger, so that the lens in the optical path system becomes larger, and the light receiving requirement can be met. For example, the beam shaping assembly of the laser beam includes a telescope group, and the light beams of the plurality of lasers need to be incident on the light incident surface of the telescope group and enter the fluorescent wheel after being beam-shrunk and adjusted by the telescope group, so that the size of the first lens of the telescope group may be very large to meet the light receiving requirement.

And the multiple lasers also need to be reasonably arranged to reduce the light receiving difficulty and reduce the volume of the light source.

Disclosure of Invention

The embodiment of the application provides a light source system and projection equipment, and can solve the problem that in the prior art, the light incident surface for receiving parallel light emitted by a plurality of lasers in the light source system is large, and then the size of the whole light source system is large. The technical scheme is as follows:

according to a first aspect of the present application, there is provided a light source system comprising:

the device comprises a shell, a plurality of laser assemblies, a telescope group and a reflector group, wherein the laser assemblies, the telescope group and the reflector group are assembled on the shell;

the laser assemblies are arranged at different positions of the shell, emergent light of the laser assemblies is not parallel completely, the laser assemblies comprise at least one first laser assembly, emergent light of each first laser assembly irradiates the reflector group, and the reflector group reflects light to the light inlet face of the telescope group.

Optionally, the plurality of laser assemblies further include at least one second laser assembly, and each second laser assembly is located in the casing at a position facing the light incident surface of the telescope group.

Optionally, the mirror group includes a first mirror, and the first mirror is located on an optical axis of the telescope group;

emergent light of each first laser assembly is emitted to the first reflecting mirror and is reflected by the first reflecting mirror to the light incident surface of the telescope group.

Optionally, the mirror group further comprises a second mirror;

the multiple laser assemblies further comprise at least one third laser assembly, and emergent light of each third laser assembly is emitted to the second reflecting mirror, reflected to the first reflecting mirror by the second reflecting mirror and then reflected to the light incident surface of the telescope group by the first reflecting mirror.

Optionally, the housing includes a bottom plate and a wall standing on the bottom plate, the mirror group is mounted on the bottom plate, and the laser assemblies are mounted on the wall.

Optionally, the shell wall includes a first sub-shell wall and a second sub-shell wall perpendicular to each other, and a plane of the first sub-shell wall is parallel to the light incident surface of the telescope group;

the first laser assembly is mounted on the second sub-housing wall, and the second laser assembly and the third laser assembly are mounted on the first sub-housing wall.

Optionally, each laser assembly comprises two lasers;

two lasers in the first laser assembly and two lasers in the third laser assembly are arranged along the direction parallel to the bottom plate, and two lasers in the second laser assembly are arranged along the direction perpendicular to the bottom plate.

Optionally, the housing wall has a plurality of openings corresponding to the plurality of laser components one to one, the plurality of laser components are mounted outside the housing wall, and the light emitting directions of the laser components face the plurality of openings in one to one correspondence.

Optionally, each laser assembly comprises at least one laser and at least one sealing structure, and each laser is mounted outside the housing wall through the sealing structure.

Optionally, the sealing structure includes a sealing glass and a sealing rubber on both sides of the sealing glass.

Optionally, the housing includes a light exit hole, and the exit light of the telescope group exits from the light exit hole;

the light source system further comprises a fluorescent component, and the light inlet hole of the fluorescent component is connected with the light outlet hole.

In another aspect, a projection device is provided, the projection device comprising a light source system as described in the first aspect.

The beneficial effects that technical scheme that this application embodiment brought include at least:

the utility model provides a light source system, this light source system includes the casing and assembles a plurality of laser subassembly on the casing, telescope group and speculum group, a plurality of laser subassembly install in the different positions of casing, and a plurality of laser subassembly's emergent light is not parallel totally, a plurality of laser subassembly include at least one first laser subassembly, every first laser subassembly's emergent light directive reflector group, and by the income plain noodles of speculum group with light reflection to telescope group, so under the structure, first laser subassembly's emergent light is by reflection entering telescope group, make a plurality of laser subassembly can be simultaneously just to telescope group, less telescope group can accept a plurality of laser subassembly's incident light, therefore can reduce telescope group's size, and then reduce light source system's volume. The problem of the bigger size of light source system among the correlation technique is solved. The effect of reducing the size of the light source system is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a light source system in the related art;

fig. 2 is a schematic structural diagram of a light source system according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of another light source system provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a housing of the light source system shown in FIG. 3;

FIG. 5 is an exploded view of each of the laser assemblies shown in FIG. 3;

FIG. 6 is a schematic diagram of a first laser assembly shown in FIG. 3;

FIG. 7 is a top view of the first laser assembly shown in FIG. 6;

FIG. 8 is a schematic diagram of another first laser assembly shown in FIG. 3;

FIG. 9 is a schematic diagram of the second laser assembly shown in FIG. 3;

FIG. 10 is a schematic view of the fluorescent assembly and housing shown in FIG. 3;

FIG. 11 is a schematic diagram of another first laser assembly shown in FIG. 3;

FIG. 12 is a schematic optical path diagram of a light source system provided in an embodiment of the present application;

FIG. 13 is a right side view of a portion of the optical path of the second laser assembly of the optical path schematic of FIG. 12;

FIG. 14 is a top view of two lasers of the third laser assembly shown in FIG. 12;

FIG. 15 is a schematic diagram of the structure of any of the lasers in the embodiments of the present application;

fig. 16 is a schematic view of a split structure of a projection apparatus according to an embodiment of the present application;

FIG. 17 is a schematic diagram of the projection apparatus of FIG. 16 with the systems connected;

fig. 18 is a schematic diagram of the projection apparatus of fig. 17 with the heat removal system removed.

Specific embodiments of the present application have been shown by way of example in the drawings and will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

At present, in a light source system, the light source system includes a coupling component and a fluorescent component, wherein the coupling component includes a plurality of lasers and a telescope group, the plurality of lasers are arranged side by side and face an incident light surface of the telescope group, light emitted by the plurality of lasers is incident to the incident light surface of the telescope group in parallel, and is incident to the fluorescent component after being adjusted by the telescope group.

However, the light source system has a large light incident surface for receiving the parallel light beams emitted by the plurality of lasers, which results in a large size of the whole light source system.

Fig. 1 is a schematic structural diagram of a light source system 100 in the related art. The laser 101 is a laser array light source, the array light source emits laser beams in the same direction, and since the plurality of light sources 101a in the laser 101 are arranged side by side, the aperture of the light incident surface of the telescope assembly 102 receiving the laser beams emitted by the laser 101 is large, and the edge thickness of the lens of the telescope assembly 102 is too thin due to the large aperture, so that the telescope assembly 102 is difficult to process.

The embodiment of the application provides a light source system and projection equipment.

Fig. 2 is a schematic structural diagram of a light source system according to an embodiment of the present application. As can be seen with reference to fig. 2, the light source system 10 may include:

a housing 11, and a plurality of laser assemblies 12, a telescope group 13, and a mirror group 14 mounted on the housing 11.

The plurality of laser assemblies 12 are mounted at different positions of the housing 11, and the emergent light of the plurality of laser assemblies 12 is not parallel, the plurality of laser assemblies 12 includes at least one first laser assembly 121, the emergent light of each first laser assembly 121 is emitted to the reflector group 14, and the reflector group 14 reflects the light to the light incident surface of the telescope group 13.

The telescope assembly 13 can convert the emergent light of the lasers into parallel light and perform beam shrinking (exemplarily, the telescope assembly 13 can include a convex lens and a concave lens, the convex lens is close to the laser assemblies 12, the concave lens is located on one surface of the convex lens far away from the laser assemblies 12, the convex lens can be used for shrinking the light emitted to the telescope assembly 13, and the shrunk light is emitted to the concave lens so that the shrunk light is diffused into parallel light beams).

Fig. 2 illustrates a case where the plurality of laser assemblies 12 includes two first laser assemblies 121, which is not limited by the embodiment of the present application.

To sum up, the embodiment of the application provides a light source system, this light source system includes the casing and assembles a plurality of laser subassembly on the casing, telescope group and speculum group, a plurality of laser subassembly install in the different positions of casing, and a plurality of laser subassembly's emergent light is not parallel totally, a plurality of laser subassembly include at least one first laser subassembly, every first laser subassembly's emergent light is directive to speculum group, and by speculum group with the income plain noodles of light reflection to telescope group, under the structure, first laser subassembly's emergent light is by reflection entering telescope group, make a plurality of laser subassembly can be not just to telescope group simultaneously, less telescope group can accept a plurality of laser subassembly's incident light, therefore can reduce telescope group's size, and then reduce light source system's volume. The problem of the bigger size of light source system among the correlation technique is solved. The effect of reducing the size of the light source system is achieved.

Fig. 3 is a schematic structural diagram of another light source system provided in an embodiment of the present application.

Fig. 3 shows a case where the plurality of laser assemblies 12 includes one first laser assembly 121, but the embodiment of the present application does not limit this.

Optionally, the plurality of laser assemblies 12 further includes at least one second laser assembly 122, and each second laser assembly 122 is located in the housing 11 and opposite to the light incident surface of the telescope group 13. Fig. 3 illustrates a case where the plurality of laser assemblies 12 includes one second laser assembly 122, but the embodiment of the present application is not limited thereto.

The light incident surface of the telescope group 13 is a surface that receives the emergent light of the plurality of laser assemblies 12, and each second laser assembly 122 is located in the casing 11 at a position that is opposite to the light incident surface of the telescope group 13, so that the emergent light of each second laser assembly 122 can directly enter the light incident surface of the telescope group 13.

When the light source system provided by the embodiment of the application is used, the telescope group 13 can receive the emergent light of the plurality of laser assemblies under the condition that the aperture of the lens of the telescope group is small, and the condition that the aperture of the telescope group 13 is large and cannot be processed is avoided. And the aperture of the lens of the telescope group 13 is small, so that the volume of the light source system including the telescope group 13 is small.

Optionally, the mirror group 14 (not shown in fig. 3) comprises a first mirror 141, the first mirror 141 being located on the optical axis of the telescope group 13. The optical axis is a symmetry axis of an optical path of incident light entering the light incident surface of the telescope group 13.

The emergent light of at least one second laser assembly 122 directly enters the light incident surface of the telescope group 13 without passing through the first reflector 141.

The light emitted from each first laser assembly 121 is emitted to the first reflector 141, and is reflected by the first reflector 141 to the light incident surface of the telescope group 13.

The mirror group 14 further comprises a second mirror 142.

The emergent light of each first laser assembly 121 does not pass through the second reflector 142 and is directly incident into the light incident surface of the first reflector 141.

The plurality of laser assemblies 12 further include at least one third laser assembly 123 (fig. 3 shows that the plurality of laser assemblies 12 include one third laser assembly 123, but this is not limited in this embodiment of the application), and the light emitted from each third laser assembly 123 is emitted to the second reflecting mirror 142, reflected by the second reflecting mirror 142 to the first reflecting mirror 141, and then reflected by the first reflecting mirror 141 to the light incident surface of the telescope group 13.

Exemplarily, at least one first laser assembly 121 may be disposed on one side of the telescope group 13, and at least one second laser assembly 122 and at least one third laser assembly 123 may be disposed on the other side of the telescope group 13, so that the light incident surface for receiving the parallel light emitted by the plurality of laser assemblies is smaller, thereby avoiding the problem that the light incident surface for receiving the parallel light emitted by the plurality of laser assemblies is larger due to the side-by-side arrangement of the plurality of laser assemblies, and further leading to the larger volume of the light source system.

As shown in fig. 4, which is a schematic structural diagram of the housing 11 in the light source system 10 shown in fig. 3, the housing 11 (not shown in fig. 4) includes a bottom plate 111 and a wall 112 standing on the bottom plate 111, the mirror group 14 is mounted on the bottom plate 111, and the plurality of laser assemblies 12 (not shown in fig. 4) are mounted on the wall 112.

The reflector assembly 14 is mounted on the bottom plate 111, so that the reflector assembly 14 can be adjusted to obtain the required emergent light of the plurality of laser assemblies after the light source system 10 is packaged.

Optionally, the housing wall 112 includes a first sub-housing wall 1121 and a second sub-housing wall 1122 that are perpendicular to each other, and the plane of the first sub-housing wall 1121 is parallel to the light incident surface of the telescope group 13.

The first laser assembly is mounted on the second sub-housing wall 1122 and the second and third laser assemblies are mounted on the first sub-housing wall 1121.

Optionally, the housing wall 112 has a plurality of openings a corresponding to the plurality of laser components 12 one to one, and the plurality of laser components 12 are installed outside the housing wall 112 with the light emitting directions facing the plurality of openings a corresponding to one.

Alternatively, in the light source system shown in fig. 3, each laser assembly 12 includes two lasers 12a.

The two lasers 12a in the first laser assembly 121 and the two lasers 12a in the third laser assembly 123 are both arranged in a direction parallel to the substrate, and the two lasers 12a in the second laser assembly 122 are arranged in a direction perpendicular to the substrate.

As shown in fig. 5, which is an exploded view of the plurality of laser assemblies 12 shown in fig. 3. Each laser assembly 12 includes at least one laser 12a and at least one sealing structure 12b (fig. 5 shows a case where each laser assembly 12 includes two lasers 12a and one sealing structure 12b, which is not limited by the embodiment of the present application), each laser 12a is mounted outside the housing wall 112 through the sealing structure 12b, and the light emitting directions of each laser 12a are directed toward the plurality of openings a (not shown in fig. 5) in a one-to-one correspondence manner. Among them, the sealing structure 12b includes a sealing glass b and a sealing rubber c on both surfaces of the sealing glass b.

Because the laser has more assembly gaps, when the light source system is used, the air tightness in the shell of the light source system cannot be guaranteed, external dust and the like can enter the light source system and is deposited on one surface of emergent light of the laser, so that the light transmittance of the laser is reduced, the laser component is installed by using the sealing structure 12b, the emergent light of the laser component penetrates through the sealing glass and enters the shell of the light source system, the high brightness of the laser in the light source system can be maintained, the brightness attenuation of the laser is relieved, and the air tightness in the shell of the light source system is guaranteed.

As shown in fig. 6, which is a schematic diagram of a structure of the first laser assembly 121 shown in fig. 3, the structure can be applied to the third laser assembly 123. At least one laser 12a in the first laser assembly 121 can be fixed to a fixed housing 121a through a sealing structure 12b, and the fixed housing 121a is mounted outside the housing wall 112 (not shown in fig. 6), so that the arrangement of at least one laser 12a in the first laser assembly 121 can be compact. The power supply Printed Circuit Boards (PCBs) 121b corresponding to each laser 12a in the first laser assembly 121 are respectively disposed on two sides of the laser 12a, so that the distance between the lasers and the laser can be relatively short, and the interval between the emergent light of each laser 12a is relatively small.

Fig. 7 is a top view of the first laser assembly 121 shown in fig. 6. The first laser assembly 121 is mounted on a housing wall (not shown in fig. 7) through a fixing housing 121a, and the power supply printed circuit boards 121b corresponding to each laser (not shown in fig. 7) are located on two different sides of the laser assembly, so that the distance between the lasers constituting the first laser assembly 121 can be reduced, the structure of the first laser assembly 121 is compact, and the volume of the light source system is further reduced.

Fig. 8 is a schematic structural diagram of another first laser assembly 121 shown in fig. 3.

Alternatively, the first laser assembly 121 may include a fixed housing 121a, at least one laser 12a, a power supply printed circuit board 121b corresponding to each laser 12a, a sealing structure 12b corresponding to each laser 12a, and a heat sink assembly 121c. The heat sink assembly 121c may be fixed to an upper portion of the at least one laser 12a by a fixing screw so as to dissipate heat of the at least one laser 12a when the at least one laser 12a is operated.

Fig. 9 is a schematic structural diagram of the second laser assemblies 122 shown in fig. 3, in which the power supply printed circuit boards 122b are located at two opposite sides of the laser 12a, the second laser assemblies 122 are fixed on the fixed housing 122a, and the fixed housing 122a is installed outside the housing wall 112 (not shown in fig. 9), such a structure can further reduce the distance between at least one laser 12a in each second laser assembly 122, thereby further reducing the volume of the light source system.

In the light source system 10 shown in fig. 3, the housing 11 includes a light exit hole 113, and the exit light from the telescope group 13 exits through the light exit hole 113.

Optionally, the light source system 10 further includes a fluorescent assembly 15, and the light inlet 151 of the fluorescent assembly 15 is connected to the light outlet 113 of the housing 11.

The fluorescent assembly 15 can convert the light emitted from the telescope group 13 into various primary lights (e.g., red light, green light, and blue light), and then emit the various primary lights out of the light source system 10.

For example, as shown in fig. 10, which is a schematic structural diagram of the fluorescent assembly 15 and the housing 11 shown in fig. 3, a sealing rubber c may be added between the light inlet 151 and the light outlet 113 for connection, so as to further improve the sealing performance of the light source system 10.

Fig. 11 is a schematic structural diagram of another first laser assembly 121 shown in fig. 3. The mirror group (not shown in fig. 11) is mounted on the base plate 111 through an adjusting assembly 114, and the adjusting assembly 114 can adjust the mirrors in the mirror group to make the reflected light of the mirror group meet the design requirement. The adjustment assembly 114 is used to facilitate adjustment of the reflector assembly after the light source system 10 is packaged, so that the light emitted from the light source system 10 meets the design requirements.

By using the light source system provided by the embodiment of the application, the light source system can realize 400 watt (w) light power output, the output luminous flux is greater than 8000 lumen (lm), and compared with the related art, high brightness output can be realized on the basis of reducing the size of the light source system. In addition, in the embodiment of the present application, the arrangement of the plurality of laser assemblies is compact, the diameter of a light spot formed by a laser is small, and the convex lens in the telescope group 13 is small, so that the overall size of the light source system 10 is small.

Fig. 12 is a schematic optical path diagram of a light source system according to an embodiment of the present application. The light emitted from the first laser assembly 121 is emitted to the first reflector 141, the light emitted from the third laser assembly 123 is emitted to the second reflector 142 and is reflected to the first reflector 141, the first reflector 141 reflects the light emitted from the first laser assembly 121 and the third laser assembly 123 to the telescope group 13, the second laser assembly 122 is arranged in a staggered manner with respect to the first reflector 141 such that the light emitted from the second laser assembly 122 is not emitted to the telescope group 13 via the first reflector 141, the first laser assembly 121 is arranged in a staggered manner with respect to the second reflector 142 such that the light emitted from at least one laser of the first laser assembly 121 is emitted to the first reflector 141 without passing through the second reflector 142, the two lasers 12a of the first laser assembly 121 and the third laser assembly 123 are arranged in a transverse direction, the two lasers 12a of the second laser assembly 122 are arranged in a longitudinal direction, the telescope group 13 emits the light emitted from the plurality of laser assemblies 12 (not shown in fig. 12) to the fluorescent assembly 15, and the fluorescent assembly 15 can be used for converting the incident light into various primary color lights (such as green light, red light and blue light).

Optionally, each laser assembly comprises two lasers. As shown in fig. 13, which is a right side view of the optical path of the second laser assembly part in the optical path diagram shown in fig. 12.

The optical paths of the two lasers in the second laser assembly 122 are located on both sides of the first mirror 141. That is, the width of the first reflecting mirror 141 along the direction of the connection line of the two lasers in the second laser assembly 122 is smaller than the width between the laser beams emitted by the two lasers and is larger than the width of the laser beam emitted by any one of the lasers, so as to reflect the laser beam emitted by the laser, and the width may be, for example, about 16 mm.

As shown in fig. 12, the second reflecting mirror 142 includes two sub-reflecting mirrors, and the two sub-reflecting mirrors are located on the optical paths of the two lasers of the third laser assembly 123 in a one-to-one correspondence.

Optionally, the optical paths of the two lasers in the first laser assembly 121 are respectively located on two sides of one of the two sub-mirrors in the second mirror 142.

As shown in fig. 14, which is a top view of two lasers of the third laser assembly 123 shown in fig. 12. Each laser comprises a rectangular light emitting surface, the light emitting surface is provided with a laser emitting hole h, and two opposite sides of the rectangular light emitting surface are provided with driving leads (which can comprise an anode lead p and a cathode lead n). Optionally, the edge a of one laser 12a without the driving lead is 0-10 mm away from the edge b of the other laser 12a without the driving lead in the two lasers of the third laser assembly 123. I.e. the two sides abut or are at a small distance from each other. Under the structure, the two lasers can be in close contact with each other to reduce the volume of the laser assembly, and further reduce the volume of the light source system.

The first laser assembly is similar in structure to the third laser assembly, that is, of the two lasers of the first laser assembly, one side of one laser, which does not have a driving lead, abuts against one side of the other laser, which does not have a driving lead.

As shown in fig. 15, which is a schematic structural diagram of any one of the lasers in the embodiments of the present application, the laser may be a Multi-Chip laser (MCL), and each MCL may include a plurality of light emitting units c, collimating lenses on the light emitting units, and a heat dissipation substrate h. The rectangular heat dissipation substrate d has driving leads q on the left and right sides in fig. 12, which can supply power to the light emitting unit c; the two sides of the heat dissipation substrate d without the driving leads are provided with fixing hole sites k. The light-emitting units c are arranged in the middle of the heat dissipation substrate d in a matrix mode and are symmetrically arranged with the two axes of the heat dissipation substrate. The width of the matrix light beams emitted by the plurality of light emitting units in the direction f between the two sides without the driving leads is not more than 1/2 of the width of the heat dissipation substrate in the direction f. Such a distance between the matrix beams from two adjacent lasers may facilitate the arrangement of the light paths as shown in fig. 12.

The light source system that this application embodiment provided, the light with a plurality of lasers has inputed telescope group through the mode that the space closed the light, compares in the mode that carries out polarization and closes the light through the polaroid, and not only the cost is lower, closes light efficiency moreover and has obtained the promotion.

In addition, the light source system provided by the embodiment of the application combines light through three independent reflectors, and compared with a scheme of combining light through a half-transmitting half-reflecting mirror, the light source system is low in cost and does not lose light combination efficiency.

In summary, the embodiment of the present application provides a light source system, which includes a housing, and a plurality of laser assemblies, a telescope group, and a mirror group mounted on the housing, where the plurality of laser assemblies are mounted on different sides of the housing, specifically, on two sides perpendicular to each other, among the plurality of laser assemblies, the laser assemblies on the different sides of the housing may combine light by reflection and transmission, the combined light beam passes through a combining mirror and is reflected again by a first mirror in this example, and a plurality of lasers in the other groups of laser assemblies are arranged through gaps, so as to avoid spatial regions of the combining mirror, and directly transmit the light beam from upper and lower regions of the combining mirror in a spatial direction, and the transmitted light beam and the light beam reflected by the combining mirror are incident to a same optical component together, that is, i.e., the telescope group in this example, the light beam may irradiate different regions of the optical component, and symmetry of an optical axis of the optical component is improved, thereby avoiding a situation that a dimension of the optical component needs to be increased when the optical component is incident in a single direction, and a size of a circular lens is increased greatly.

In an exemplary embodiment, the light source system 10 includes a housing 11, and a plurality of laser assemblies 12, a telescope group 13, and a mirror group 14 mounted on the housing 11, each laser assembly 12 includes two lasers, and the two lasers in each laser assembly are fixed on a fixed housing, the laser assembly 12 is fixed on the housing 11 through the fixed housing, a sealing glass and a sealing rubber are disposed between the laser assembly 12 and the housing 11 on both sides of the sealing glass, and the mirror group 14 is fixed on a bottom plate 111 of the housing 11.

The plurality of laser assemblies 12 include a first laser assembly 121, a second laser assembly 122 and a third laser assembly 123, the reflector group 14 includes a first reflector 141 and a second reflector 142, the emergent light of the first laser assembly 121 is emitted to the first reflector 141, the emergent light of the third laser assembly 123 is emitted to the second reflector 142 and is reflected to the first reflector 141 by the second reflector 142, the first reflector 141 emits the emergent light of the first laser assembly 121 and the emergent light of the third laser assembly 122 to the telescope group 13, the second laser assembly 122 is over against the light incident surface of the telescope group 13, the emergent light of the second laser assembly 122 is directly emitted to the telescope 13, the telescope group 13 emits the emergent light of the plurality of laser assemblies 12 to the fluorescent assembly 15, the fluorescent assembly 15 converts the emergent light of the telescope assembly 13 into various primary color lights, and emits the various primary color lights to the light source system.

Fig. 16 is a schematic view of a split structure of a projection apparatus according to an embodiment of the present disclosure. As can be seen with reference to fig. 16, the projection apparatus 00 may include: along the projection direction of the light beam, the light source system 10 is connected with the opto-mechanical part 20, and the opto-mechanical part 20 is connected with the lens part 30. The light source system 10 is used for providing an illumination beam to the opto-mechanical part 20, the light source system 10 may include a laser light source and a fluorescent component, the light source system 10 emits a white light beam as the illumination beam to be provided to the opto-mechanical part 20, and the white light beam may be formed by mixing three primary colors outputted in time sequence. The illumination light beam is processed by an illumination light path, and is irradiated to the surface of the light valve after meeting the preset size and the preset incident angle, the light valve is driven by the corresponding image display signal to modulate the incident light beam, the modulated light beam is reflected out and projected into the lens part 30, and the lens part 30 is used for amplifying and imaging the projected light beam in the projection screen. In the present example, the lens portion 30 is an ultra-short-focus projection lens, and the laser projection apparatus in the present embodiment is an ultra-short-focus laser projection apparatus.

And the light extraction efficiency of the laser is also influenced by the temperature, and different lasers have self-appropriate temperature ranges. In order to ensure proper operation of the high-brightness light source, the laser projection device is further provided with a heat dissipation system 40, as shown in fig. 16 and 17. Fig. 17 is a schematic diagram of the projection apparatus shown in fig. 16 when the systems are connected.

In this example, the heat dissipation system 40 is a liquid cooling heat dissipation system, which performs water cooling heat dissipation on the high heat laser. The optical engine part can be ensured to work in a controllable temperature range, and the optical power of the laser and the fluorescence can be more stable.

And because light source part and lens part are arranged side by side, the distance is close, under the controllable condition of temperature rise of light source part, also can alleviate the heat transfer to lens part, alleviate the temperature drift phenomenon of lens part lens, keep the better resolving power of lens subassembly. Fig. 18 is a schematic diagram of the projection apparatus of fig. 17 with the heat dissipation system 40 removed.

In summary, the embodiment of the present application provides a projection apparatus, a light source system of which includes a plurality of laser assemblies, a telescope group, a reflector group, and a fluorescence assembly. The laser assemblies on different sides of the shell of the light source system are arranged on mutually vertical sides, the laser assemblies on different sides of the shell can realize light combination in a reflection and transmission mode, light beams after light combination are reflected again by the light combination reflector, the laser assemblies of other groups are arranged in a gap mode, the arrangement direction of the group of lasers is different from the arrangement mode of the lasers in the laser group, gaps can be formed among the lasers, and further gaps are formed among the light beams emitted by the lasers, so that the space regions of the light combination reflector are avoided from being opened and closed, the light beams are directly transmitted from the upper region and the lower region of the light combination reflector in the space direction, the transmitted light beams and the light beams reflected by the light combination reflector are incident to the same optical component together, the light beams can irradiate different regions of the optical component, the symmetry of the optical axis of the optical component is improved, under the structure, emergent light of the laser assemblies can not directly face a telescopic lens at the same time, the size of a certain dimension of the optical component is required to be increased when the light beams are incident to the optical component in a single direction, the size of the optical component is increased, the whole lens is greatly reduced, and the utilization rate of the lens processing is greatly reduced. The problem of the bigger size of light source system among the correlation technique is solved. The effect of reducing the size of the light source system is achieved.

The above description is intended only to illustrate the alternative embodiments of the present application, and should not be construed as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (7)

1. A light source system, comprising:

the device comprises a shell, a plurality of laser components, a telescope group and a reflector group, wherein the laser components, the telescope group and the reflector group are assembled on the shell;

the laser assemblies are arranged at different positions of the shell, emergent light of the laser assemblies is not parallel completely, the laser assemblies comprise at least one first laser assembly, emergent light of each first laser assembly is emitted to the reflector group, and the reflector group reflects the light to the light inlet surface of the telescope group;

the telescopic lens group comprises a convex lens and a concave lens;

the plurality of laser assemblies further comprise at least one second laser assembly, each second laser assembly is located in the position, opposite to the light inlet face of the telescope group, in the shell, and emergent light of at least one second laser assembly directly enters the light inlet face of the telescope group;

the reflector group comprises a first reflector which is positioned on the optical axis of the telescope group;

the emergent light of each first laser assembly is emitted to the first reflector and is reflected by the first reflector to the light incident surface of the telescope group; the reflector group further comprises a second reflector;

the multiple laser assemblies further comprise at least one third laser assembly, and emergent light of each third laser assembly is emitted to the second reflecting mirror, reflected to the first reflecting mirror by the second reflecting mirror and then reflected to the light incident surface of the telescope group by the first reflecting mirror;

the second reflecting mirror comprises two sub reflecting mirrors which are correspondingly positioned on the light paths of the two lasers of the third laser assembly one by one;

the light paths of two lasers in the first laser assembly are respectively positioned on two sides of one sub-reflector in two sub-reflectors in the second reflector, and emergent light of the lasers in the first laser assembly does not pass through the second reflector and directly enters the first reflector.

2. The light source system of claim 1, wherein the housing comprises a base plate and a wall standing on the base plate, the mirror assembly is mounted on the base plate, and the plurality of laser assemblies are mounted on the wall.

3. The light source system of claim 2, wherein the shell wall comprises a first sub-shell wall and a second sub-shell wall which are perpendicular to each other, and the plane of the first sub-shell wall is parallel to the light incident surface of the telescope group;

the first laser assembly is mounted on the second sub-housing wall, and the second laser assembly and the third laser assembly are mounted on the first sub-housing wall.

4. The light source system of claim 3, wherein each of the laser assemblies comprises two lasers;

the two lasers in the first laser assembly and the two lasers in the third laser assembly are arranged in a direction parallel to the base plate, and the two lasers in the second laser assembly are arranged in a direction perpendicular to the base plate.

5. The light source system of claim 2, wherein the housing wall has a plurality of openings corresponding to the plurality of laser components, and the plurality of laser components are mounted outside the housing wall and have light emitting directions corresponding to the plurality of openings.

6. The light source system of claim 3, wherein each of the laser assemblies comprises at least one laser and at least one sealing structure, each of the lasers being mounted outside the housing wall by the sealing structure.

7. A projection device, characterized in that the projection device comprises a light source system as claimed in any one of claims 1 to 6.

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