CN113568264A

CN113568264A - Light source assembly and projection equipment

Info

Publication number: CN113568264A
Application number: CN202110887760.9A
Authority: CN
Inventors: 李巍
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2021-10-29

Abstract

An embodiment of the present application provides a light source assembly, including a laser for emitting red, green and blue laser light; a light combining component located between the laser and a second lens group; the second lens group is located between the light combining component and angle adjustment Between the components, the beam is converged; the angle adjustment component; the laser light emitted by the laser passes through the transmission area of the light combining component and then enters the second lens group, and after the second lens group converges, it enters the angle adjustment component, and the adjusted beam passes through the After the second lens group is collimated, it enters the light combining component, and is reflected by the reflection area of the light combining component toward the light exiting direction. The light source assembly provided by the present application improves the problem of poor consistency of the beam spot emitted by the laser, thereby improving the uniform light effect and improving the image quality.

Description

Light source assembly and projection equipment

Technical Field

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

Background

With the continuous development of science and technology, projection equipment is more and more applied to the work and the life of people. At present, a projection apparatus mainly includes a light source system, an optical-mechanical system and a lens, the light source system is located at a light-incident side of the optical-mechanical system, the lens is located at a light-emitting side of the optical-mechanical system, and a light beam emitted from the light source system is emitted to the optical-mechanical system, and is emitted to the lens after being processed by the optical-mechanical system, so that the lens can emit the light beam to a projection screen, thereby displaying a picture on the projection screen. In recent years, with the development of laser devices and the reduction of cost, three-color lasers are becoming the preferred devices for projection light sources.

When three-color lasers are used in a light source system, the respective color lasers are generally arranged in a certain manner. In the related art, the laser beams emitted by the laser have different diffusion degrees of red laser, green laser and blue laser, and the light spot uniformity is poor when the light beams are combined.

The present application provides a light source assembly for solving the above problems.

Disclosure of Invention

The application provides a light source subassembly and projection equipment can improve the poor phenomenon of the light beam facula uniformity of light source subassembly outgoing.

In one aspect, the present application provides a light source assembly comprising: the laser is used for emitting a light beam comprising red, blue and green laser; the light combining component is positioned between the laser and the second lens group and comprises a reflecting area, the reflecting area comprises a first reflecting area and a second reflecting area, and the first reflecting area and the second reflecting area are arranged at intervals; the second lens group is positioned between the light combination component and the angle adjusting component and used for converging laser emitted by the laser; an angle adjusting member; and a beam of laser emitted by the laser enters the second lens group through the position between the first reflecting area and the second reflecting area, is converged by the second lens group and then enters the angle adjusting component, the angle adjusting component emits the beam towards the light combining component after adjusting the angle of the incident beam, enters the light combining component after being collimated by the second lens group, and is reflected towards the light emitting direction by the first reflecting area and the second reflecting area of the light combining component.

In another aspect, the present application provides a light source assembly comprising: the laser device is used for emitting first laser and second laser, and the two laser beams comprise beams of red, green and blue laser; the light combination component is positioned between the laser and the second lens group and comprises a reflecting area; the second lens group is positioned between the light combination component and the angle adjusting component and used for converging laser emitted by the laser; an angle adjusting member; the laser device comprises a laser device, a light combination assembly, an angle adjustment component, a light combination assembly and a reflection area, wherein first laser emitted by the laser device is incident to the second lens assembly after passing through the light combination assembly, second laser is incident to the second lens assembly after passing through the light combination assembly, the second lens assembly converges laser emitted by the laser device and then emits a light beam to the angle adjustment component, the angle adjustment component emits the light beam to the direction of the light combination assembly after adjusting the angle of an incident light beam, the light beam is incident to the light combination assembly after being collimated by the second lens assembly and is reflected to the light emitting direction by the reflection area of the light combination assembly; the first laser and the second laser are incident to the second lens group from two sides of the reflection area of the light combination assembly.

The application still provides a projection equipment, including light source subassembly and ray apparatus subassembly and the lens subassembly in this application.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

and the scheme in this application, through reasonable angle adjustment part that sets up, red laser because the laser outgoing, blue laser, the facula uniformity that the different leads to of green laser facula diffusion degree is poor, the problem that even light effect is not good has been solved, and, because the laser that guides the laser outgoing both can be accomplished to the light combination subassembly, the outgoing beam that can guide angle adjustment part again reflects to the light-emitting direction, make the compact structure of light source subassembly, when being favorable to the light source subassembly even to improve speckle phenomenon, still have the miniaturization that makes projection equipment concurrently.

Drawings

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

Fig. 1 is a schematic view of a light source module provided in the present application;

FIG. 2 is a top view of the light combining assembly shown in FIG. 1;

FIG. 3 is a top view of the angle adjustment assembly shown in FIG. 1;

FIG. 4 is a schematic view of another light source module provided herein;

FIG. 5 is a schematic view of another light source module provided herein;

FIG. 6 is a top view of the light combining assembly shown in FIG. 5;

FIG. 7 is a top view of another light combining assembly shown in FIG. 5;

FIG. 8 is a top view of yet another light combining component shown in FIG. 5;

FIG. 9 is a schematic view of another light source module provided herein;

FIG. 10 is a schematic view of another light source module provided herein;

FIG. 11 is a schematic view of another light source module provided herein;

FIG. 12 is a schematic view of an optical path structure of a light source module provided herein;

FIG. 13 is an optical path structure diagram of another light source module provided in the present application;

FIG. 14 is a schematic view of an optical path structure of another light source module provided in the present application;

FIG. 15 is an optical path structure diagram of another light source module provided in the present application;

FIG. 16 is a schematic view of an optical path structure of another light source module provided in the present application;

FIG. 17 is a schematic view of an optical path structure of another light source module provided in the present application;

FIG. 18 is an enlarged partial view of one of the optical assemblies provided herein;

fig. 19 is a schematic diagram of a projection apparatus provided in the present application.

Detailed Description

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

In this application, the Y direction is the direction in which the laser is incident on the light combining component, and the X direction is the direction perpendicular to the Y direction. This direction is for illustration only.

Fig. 1 is a schematic structural diagram of a light source assembly provided in an embodiment of the present disclosure.

As shown in fig. 1, the light source assembly includes a laser 101, a first lens group 102, a light combining assembly 103, a second lens group 104, and an angle adjusting component 105.

The laser 101, the first lens group 102, the light combining component 103, the second lens group 104 and the angle adjusting component 105 may be arranged in sequence along an auxiliary direction (e.g., y direction in fig. 1), and in this embodiment, a light beam emitted from the laser 101 may pass through the laser 101, the first lens group 102, the light combining component 103, the second lens group 104 and the angle adjusting component 105 in sequence along a predetermined direction.

In this embodiment, the laser 101 may emit at least three-color laser light, where the three-color laser light includes red laser light, green laser light, and blue laser light. In one possible implementation, the laser 101 may be a MCL laser 101. In one possible embodiment, the red, blue or green laser light emitted by the laser 101 may be emitted simultaneously or in a time-sharing manner, for example, the first light-emitting chips and the second light-emitting chips in the laser 101 emit light alternately. In a possible embodiment, in the laser 101, the current or the voltage for driving different light emitting chips may be different or the same, and for example, the driving current for driving the light emitting chips is controlled according to the brightness of different light emitting chips, and the driving control manner of different light emitting chips is not limited in this application.

The first lens group 102 is located between the laser 101 and the light combining assembly 103, and condenses an incident light beam and emits the condensed light beam to the light combining assembly 103. In this embodiment, the first lens assembly 102 includes a first lens 1021 and a second lens 1022, wherein the first lens 1021 is a convex lens, the second lens 1022 is a concave lens, and the first lens 1021 and the second lens 1022 form the first lens assembly 102. In this embodiment, the first lens 1021 converges the incident light beam and emits the light beam to the second lens 1022, and the second lens 1022 collimates the light beam into a parallel light beam and emits the parallel light beam out of the light combining component 103. In a possible embodiment, the first lens group 102 may not be included in the light source module, which is not limited in the present application.

The light combining component 103 is located between the first lens group 102 and the second lens group 104, and is disposed to be inclined to the light incident surface of the angle adjusting component 105 at a certain angle. In one possible embodiment, the light combining component 103 is inclined at an angle of 45 degrees, which is not limited in this application. Referring to fig. 1 and fig. 2, the light combining component 103 includes a transmissive region and a reflective region, wherein the reflective region includes a first reflective region 1032a and a second reflective region 1032b, and in this embodiment, a transmissive region 1031 is disposed between the first reflective region 1032a and the second reflective region 1032 b. In one possible embodiment, the transmission area is transparent glass, or the surface of the transmission area is coated with a material which at least transmits red, blue and green laser beams; in a possible embodiment, the reflective region is a glass coated with a material capable of reflecting at least red, green and blue laser light or is a mirror, and in a possible embodiment, the area of the transmissive region is smaller than that of the reflective region. In this embodiment, the area of the first reflective region 1032a is equal to the area of the second reflective region 1032b, in a possible implementation manner, the area of the first reflective region 1032a may be smaller than the area of the second reflective region 1032b, and the area of the first reflective region 1032a may also be larger than the area of the second reflective region 1032b, which is not limited in this application.

In a possible embodiment, a side of the transmission region 1031 of the light combining component 103 close to the laser 101 may be coated with an antireflection film, or in a possible embodiment, a side of the light combining component 103 close to the laser 101 is coated with an antireflection film, which is not limited in this application. In a possible embodiment, the antireflection film may increase the transmittance only for the light beam emitted by the laser 101, for example, if the laser 101 emits blue, red, and green laser light, the antireflection film may increase the transmittance only for the blue, red, and green laser light, or in a possible embodiment, the antireflection film may be a full-spectrum antireflection film, which increases the transmittance for the full-spectrum light, which is not limited in this application.

In this embodiment, since the first lens group 102 narrows the laser beam emitted from the laser 101, the area of the light spot incident on the transmission region of the light combining component 103 is smaller than that of the laser beam emitted from the laser 101, so as to reduce the area of the transmission region in the light combining component 103, and further increase the area of the reflection region. Thus, the light beams emitted by the angle adjustment component 105 can be reflected by the reflection region 1031 to the light outlet direction more, so that the waste of the light beams is reduced, and the light receiving efficiency of the light source component is improved.

The second lens group 104 is located between the light combining element 103 and the angle adjusting member 105, converges the light flux incident on the second lens group 104, and emits the light flux to the angle adjusting member 105. As shown in fig. 1, second lens group 104 may be a converging lens that converges incident light beams. In one possible embodiment, second lens group 104 may be two convex lenses that collectively converge the light beam incident to second lens group 104; in a possible embodiment, the second lens group 104 may be composed of other lenses, which is not limited in this application as long as the convergence of the light beam emitted from the laser 101 can be achieved.

The angle adjusting part 105 is used to angle-adjust the light flux incident to the angle adjusting part 105. For example, in the embodiment of the present application, the angle adjustment unit 105 is configured to increase a divergence angle of a light beam incident on the angle adjustment unit 105, and to adjust spot uniformity of each color laser. In one possible embodiment, the angle adjustment component 105 is a diffuse reflection structure, and in another possible embodiment, the angle adjustment component 105 may be a combination of a scattering structure and a reflection structure, and the implementation manner of the angle adjustment component is not limited in this application as long as the beam divergence angle can be expanded.

In a possible implementation manner, the angle adjustment component 105 is a movable angle adjustment component 105, and the angle adjustment component 105 can rotate around the central axis Z in the w direction or the opposite direction of w, increase the divergence angle of the laser beam incident on the angle adjustment component 105, and emit the beam toward the light combining component 103. In a possible embodiment, the movement mode of the angle adjusting component 105 may be a two-dimensional translation, and in a possible embodiment, the angle adjusting component 105 is a static structure, and the application does not limit the movement mode of the angle adjusting component 105. In one possible embodiment, the light incident surface of the angle adjusting member 105 is further coated with another material or provided with another structure, which is not limited in the present application.

The optical path shown in fig. 1 will be described next.

The laser 101 emits at least red, green and blue laser light, the laser light is emitted to the first lens group 102, is emitted to the transmission region 1031 of the light combining component 103 after being converged by the first lens group 102, is emitted to the second lens group 104 after being transmitted by the laser light transmission region 1031, is emitted to the angle adjusting component 105 after being converged by the second lens group 104, the angle adjusting component 105 increases the divergence angle of the incident laser light beam and then emits the incident laser light beam to the light combining component 103, and the emitted light beam passes through the second lens group 104, is emitted to the light combining component 103 after becoming parallel light beams and is reflected to the light emitting direction by the reflection region of the light combining component 103.

In a commonly used three-color laser projection apparatus, because of inconsistent light spot diffusion degrees of red laser, green laser and blue laser in laser beams emitted by the laser 101, the light uniformizing effect is poor. And the scheme in this application, through reasonable angle adjustment part 105 that sets up, red laser because laser 101 outgoing, blue laser, the facula uniformity that the different results in of green laser facula diffusion degree is poor, the problem that even light effect is not good has been solved, and, because it can both accomplish the laser of guide laser 101 outgoing to close light subassembly 103, the outgoing beam that can guide angle adjustment part 105 again reflects to the light-emitting direction, make the compact structure of light subassembly, be favorable to light subassembly or even projection apparatus's miniaturization.

Fig. 4 is a schematic view of another light source module provided in the present application.

In this embodiment, the light source assembly includes a laser 101, a first lens group 102, a light combining assembly 103, a second lens group 104, and an angle adjusting component 105. In this embodiment, the angle adjustment component 105 is a fixed angle adjustment component 105, and the angle adjustment component 105 can increase the divergence degree of the incident beam. In one possible embodiment, the surface of the angle adjusting component 105 may be coated with other materials or provided with other structures, which is not limited in this application.

In this embodiment, the laser 101 at least emits red, green, and blue laser light, the laser light is emitted to the first lens group 102, is converged by the first lens group 102 and then emitted to the transmission region of the light combining assembly 103, passes through the transmission region and then emitted to the second lens group 104, is converged by the second lens group 104 and then emitted to the fixed angle adjusting component 105, the fixed angle adjusting component 105 increases the divergence degree of the incident laser beam and emits the beam toward the light combining assembly 103, and the beam passes through the second lens group 104, is collimated by the second lens group 104, then is emitted to the light combining assembly 103, and is reflected by the reflection region of the light combining assembly 103 toward the light emitting direction.

Fig. 5 is a schematic structural diagram of another light source module provided in the present application.

As shown in fig. 5 and 6, the present embodiment includes a laser 101, a first lens group 102, a light combining component 103, a second lens group 104, and an angle adjusting component 105. The light combining component 103 includes a first reflective region 1032a and a second reflective region 1032b, the first reflective region 1032a and the second reflective region 1032b are disposed at an interval, one side of the first reflective region 1032a close to the second reflective region 1032b is a transmission region 1031, in this embodiment, the transmission region 1031 is a hollow region, and a top view of the light combining component 103 is as shown in fig. 6. Wherein, the cross section along a-a' in fig. 6 is a schematic view of the light combining component 103 in fig. 5. In one possible embodiment, the first reflective region 1032a and the second reflective region 1032b are disposed to be inclined to the angle adjustment component 105 at the same angle, and in another possible embodiment, the first reflective region 1032a and the second reflective region 1032b are disposed to be inclined to the angle adjustment component 105 at different angles, which is not limited in this application. In this embodiment, the first reflective region 1032a and the second reflective region 1032b are both disposed at an angle of 45 degrees and inclined to the angle adjustment component 105, and in a possible implementation manner, the first reflective region 1032a and the second reflective region 1032b may be disposed at an angle of other angles and inclined to the angle adjustment component 105, which is not limited in this application. The transmissive region is located between the first reflective region 1032a and the second reflective region 1032b, and the size of the transmissive region is only required to allow the laser beam emitted by the first lens group 102 to pass through, which is not limited in the present application.

The propagation of the optical path as shown in fig. 5 is described next.

The laser 101 emits at least red, green and blue laser light, the three-color laser light enters the first lens set 102, is converged by the first lens set 102 and then is emitted to the light combining component 103, passes through the transmission region of the light combining component 103, enters the second lens set 104, is converged by the second lens set 104 and then is emitted to the angle adjusting component 105, the angle adjusting component 105 increases the divergence degree of the incident light beam and then emits the light beam to the light combining component 103, the light beam transmits the second lens set 104, becomes parallel light beam and then is emitted to the light combining component 103, and the parallel light beam is reflected to the light emitting direction by the first reflection region 1032a and the second reflection region 1032b of the light combining component 103.

Fig. 7 is a structural diagram of another light combining component 103 according to an embodiment of the present application. As shown in fig. 7, the light combining element 103 includes a reflective region and a transmissive region, wherein the reflective region includes a first reflective region 1032a and a second reflective region 1032b, the transmissive region includes a first region 10311 and a second region 10312, wherein the first region 10311 is a hollow region, the second region 10312 is transparent glass, or a surface thereof is coated with a material that allows at least red, blue, and green laser beams to transmit, or a side of the second region 10312 close to the second lens group 104 is coated with a film layer that can reflect at least red, blue, and green laser beams. In this embodiment, the first area 10311 is a circular hollow structure, but in a possible embodiment, the first area 10311 may be an oval or other hollow structure, and the shape of the first hollow area is not limited in this application. In a possible embodiment, the size of the first region 10311 allows the laser beam emitted from the first lens group 102 to pass through, and in a possible embodiment, the area of the first region 10311 may be larger than the area of the laser beam emitted from the first lens group 102, which is not limited in this application. In one possible embodiment, the boundary of the first region 10311 exceeds the boundary of the second region 10312 and intersects the first transmission region 1031a or the second transmission region 1031b, one of which is shown in fig. 8. This is not limited by the present application.

Fig. 9 is a schematic view of a light source module according to another embodiment of the present disclosure.

As shown in fig. 9, the optical lens includes a laser 101, a light combining unit 103, a second lens group 104, and an angle adjusting member 105.

The laser 101 is used to emit red, blue, and green laser light. In this embodiment, the laser beam emitted by the laser 101 is two laser beams, including a first laser beam L1 and a second laser beam L2. In a possible embodiment, the first laser L1 includes blue, red and green lasers, the second laser L2 is not limited, and lasers 101 with different colors may be provided to emit laser beams according to needs. In one possible embodiment, the first laser L1 may be a red laser, and the second laser L2 includes at least a blue laser and a green laser; alternatively, the first laser L1 may include a red laser and a blue laser, and the second laser L2 includes a green laser; alternatively, the first laser light L1 includes red laser light and green laser light, and the second laser light L2 includes blue laser light; as long as the laser beams emitted by the first laser light L1 and the second laser light L2 include red, blue and green laser light, the present application does not limit the colors of the laser light included by the first laser light L1 and the second laser light L2. In a possible embodiment, the first laser light L1 and the second laser light L2 are emitted by a group of lasers 101 including different light emitting chips, and in a possible embodiment, the first laser light L1 and the second laser light L2 are emitted by two groups of lasers 101 including light emitting chips, or any one of the first laser light L1 and the second laser light L2 is emitted by multiple groups of lasers 101, which is not limited in this application. Fig. 9 only shows that two lasers are emitted by one laser 101, however, those skilled in the art can easily and definitely obtain the structure of the light source module that two lasers are emitted by two lasers 101, and therefore, the present application is not repeated for this purpose.

The light combining component 103 is located between the laser 101 and the second lens assembly 104, and includes a reflective region and a transmissive region, wherein the transmissive region includes a first transmissive region 1031a and a second transmissive region 1031b, the first transmissive region 1031a and the second transmissive region 1031b are disposed at an interval, the reflective region 1032 is disposed between the first transmissive region 1031a and the second transmissive region 1031b, and the reflective region and the transmissive region are disposed in succession, in one possible embodiment, the reflective region and the transmissive region are disposed at an angle inclined to the light incident surface of the angle adjustment component 105, and in another possible embodiment, the reflective region and the transmissive region are disposed at an angle inclined to the light incident surface of the angle adjustment component 105. In this embodiment, the light combining component 103 is disposed to be inclined at an angle of 45 degrees with respect to the light incident surface of the angle adjustment component 105, and in a possible implementation, the light combining component 103 may be disposed to be inclined at another angle with respect to the light incident surface of the angle adjustment component 105, which is not limited in this application. In one possible embodiment, the area of the reflective region in the light combining component 103 is larger than that of the transmissive region, but in another possible embodiment, the area of the reflective region may be equal to that of the transmissive region, or the area of the reflective region may be smaller than that of the transmissive region, which is not limited in this application.

The second lens group 104 is located between the light combining element 103 and the angle adjusting member 105, converges the light flux incident on the second lens group 104, and emits the light flux to the angle adjusting member 105. As shown in fig. 9, second lens group 104 may be a converging lens that converges incident light beams. In one possible embodiment, second lens group 104 may be two convex lenses that collectively converge the light beam incident to second lens group 104; in a possible embodiment, the second lens group 104 may be composed of other lenses, which is not limited in this application as long as the convergence of the light beam emitted from the laser 101 can be achieved.

In this embodiment, the angle adjustment component 105 is a movable angle adjustment component 105, and the top view of the angle adjustment component 105 is shown in fig. 3, and the angle adjustment component 105 can rotate around the central axis Z in the w direction or the w direction, so as to increase the divergence degree of the laser beam incident on the angle adjustment component 105 and emit the beam toward the light combining component 103. In one possible embodiment, the light incident surface of the angle adjusting member 105 is further coated with another material or provided with another structure, which is not limited in the present application.

In one possible embodiment, the angle adjustment component 105 may be a fixed angle adjustment component 105.

In this embodiment, the two laser beams emitted by the laser 101 include a first laser beam L1 and a second laser beam L2, the first laser beam L1 enters the first transmission region 1031a of the light combining component 103, enters the second lens group 104 after passing through the first transmission region 1031a, and exits to the angle adjusting component 105 after being converged by the second lens group 104; the second laser light L2 enters the second transmission region 1031b of the light combining component 103, passes through the second transmission region 1031b, enters the second lens group 104, is converged by the second lens group 104, and is emitted to the angle adjusting member 105. The angle adjustment component 105 increases the divergence degree of the incident light beam, emits the light beam to the second lens group 104, collimates the light beam by the second lens group 104, and then becomes a parallel light beam to enter the light combining component 103, and is reflected by the reflection region of the light combining component 103 to the light outlet direction.

As shown in the light source module of fig. 9, two beams of light emitted from the laser 101 enter the second lens set 104 after passing through the transmission region of the light combining module 103, are converged by the second lens set 104 and then exit to the angle adjusting component 105, and then exit toward the light combining module 103, and the light beams are collimated by the second lens set 104 and then enter the reflection region of the light combining module 103 and are reflected toward the light exit direction. In the light source module provided by this embodiment, the first transmission region 1031a and the second transmission region 1031b of the light combining module 103 are located at two sides of the light combining module 103 in the X direction, and the reflection region 1032 is located between the first transmission region 1031a and the second transmission region 1031b, so that the light beam emitted by the angle adjusting component 105 is reflected by the same reflection region to the light outlet direction, and thus, in the light spot reflected by the light combining module 103, the light spot centers of the lasers of different colors coincide, the size consistency is good, so that the light uniformizing effect is improved, the quality of the light spot is improved, and further, the image quality is improved.

Fig. 10 shows a schematic view of another light source module provided herein.

As shown in fig. 10, the present embodiment includes a laser 101, a light combining component 103, a second lens group 104, and an angle adjusting component 105.

Compared to the schematic structure of the light source module shown in fig. 9, in the light source module shown in fig. 10, the light combining module 103 is only composed of the reflective region.

As shown in fig. 10, the laser 101 emits two laser beams, i.e., a first laser L1 and a second laser L2, in a possible embodiment, the first laser L1 includes blue, red and green lasers, the second laser L2 is not limited, and lasers 101 with different colors may be provided to emit laser beams according to needs. In one possible embodiment, the first laser L1 may be a red laser, and the second laser L2 includes at least a blue laser and a green laser; alternatively, the first laser L1 may include a red laser and a blue laser, and the second laser L2 includes a green laser; alternatively, the first laser light L1 includes red laser light and green laser light, and the second laser light L2 includes blue laser light; as long as the laser beams emitted by the first laser light L1 and the second laser light L2 include red, blue and green laser light, the present application does not limit the colors of the laser light included by the first laser light L1 and the second laser light L2. In a possible embodiment, the first laser light L1 and the second laser light L2 are emitted by a group of lasers 101 including different light emitting chips, and in a possible embodiment, the first laser light L1 and the second laser light L2 are emitted by two groups of lasers 101 including light emitting chips, or any one of the first laser light L1 and the second laser light L2 is emitted by multiple groups of lasers 101, which is not limited in this application. Fig. 10 only shows that two lasers are emitted by one laser 101, however, those skilled in the art can easily and definitely obtain the structure of the light source module that two lasers are emitted by two lasers 101, and therefore, the present application is not described in detail for this purpose.

As shown in the schematic structural diagram of the light source module shown in fig. 10, the first laser light L1 is spaced from the second laser light L2 by a certain distance, the first laser light L1 is incident on the left side of the reflective region and incident on the second lens group 104, and the second laser light L2 is incident on the right side of the emission region and incident on the second lens group 104.

The light combining component 103 is composed of only one reflection region 1032, the reflection regions 1032 are located on two sides of the first laser light L1 and the second laser light L2 in the X direction, and the orthographic projections of the reflection regions 1032 on the surface of the angle adjustment member 105 are located between the orthographic projections of the first laser light L1 and the second laser light L2 on the surface of the angle adjustment member 105, and do not overlap each other.

In one possible embodiment, the reflection area is disposed at an angle of 45 degrees inclined to the light incident surface of the angle adjustment member 105, and in one possible embodiment, the reflection area may be disposed at another angle inclined to the light incident surface of the angle adjustment member 105, which is not limited in this application.

The second lens group 104 is positioned between the light combining unit 103 and the angle adjusting member 105, converges the first laser light L1 and the second laser light L2 emitted from the laser 101, and emits the light beams to the angle adjusting member 105. The positions of the first laser light L1 and the second laser light L2 emitted from the laser 101 and incident on the surface of the second lens group 104 may be symmetrical with respect to the optical axis of the second lens group 104, and in a possible embodiment, the positions of the first laser light L1 and the second laser light L2 emitted from the laser 101 and incident on the surface of the second lens group 104 may be asymmetrical with respect to the optical axis of the second lens group 104, which is not limited in this application.

The first laser light L1 and the second laser light L2 emitted from the second lens assembly 104 are incident on the angle adjustment component 105, the angle adjustment component 105 adjusts the angle of the incident light beam and emits the light beam in the direction of the light combination assembly 103, the light beam is incident on the second lens assembly 104, is collimated by the second lens assembly 104, becomes a parallel light beam and is incident on the reflection area of the light combination assembly 103, and is reflected by the reflection area of the light combination assembly 103 in the light emitting direction.

In this embodiment, the light combining component 103 is only composed of one reflection region 1032, the first laser light L1 and the second laser light L2 emitted by the laser 101 directly enter the second lens group 104 from the two sides of the reflection region 1032 of the light combining component 103 in the X direction, and enter the angle adjusting component 105 after being converged by the second lens group 104, the angle adjusting component 105 adjusts the angle of the incident light beam and emits the light beam to the light combining component 103, and the light beam enters the reflection region 1032 of the light combining component 103 after being collimated by the second lens group 104 and is reflected in the light emitting direction. Because the light combination component 103 is only composed of the reflection region, the complexity of the light source component is reduced, the cost is saved, and the space occupied by the light combination component 103 in the light source component is saved, and compared with the structure of the light source component shown in fig. 9, under the condition that the reflection regions of the light combination component 103 are the same, the light receiving efficiency of the light combination component 103 is not reduced due to different structures of the light combination component 103, and the problems of poor consistency of light spots and poor light uniformizing effect in the original light source component are also improved.

Fig. 11 is a schematic view of a light source module according to still another embodiment of the present disclosure. As shown in fig. 11, the laser 101 emits two laser beams, i.e., a first laser L1 and a second laser L2, in a possible embodiment, the first laser L1 includes blue, red and green lasers, the second laser L2 is not limited, and lasers 101 with different colors may be arranged to emit laser beams according to needs. In one possible embodiment, the first laser L1 may be a red laser, and the second laser L2 includes at least a blue laser and a green laser; alternatively, the first laser L1 may include a red laser and a blue laser, and the second laser L2 includes a green laser; alternatively, the first laser light L1 includes red laser light and green laser light, and the second laser light L2 includes blue laser light; as long as the laser beams emitted by the first laser light L1 and the second laser light L2 include red, blue and green laser light, the present application does not limit the colors of the laser light included by the first laser light L1 and the second laser light L2. In a possible embodiment, the first laser light L1 and the second laser light L2 are emitted by a group of lasers 101 including different light emitting chips, and in a possible embodiment, the first laser light L1 and the second laser light L2 are emitted by two groups of lasers 101 including light emitting chips, or any one of the first laser light L1 and the second laser light L2 is emitted by multiple groups of lasers 101, which is not limited in this application. Fig. 11 only shows that two laser beams are emitted by different light emitting chips of one laser 101, however, those skilled in the art can easily and certainly obtain the structure of the light source assembly that two laser beams are emitted by two lasers 101, that is, the first laser beam L1 is emitted by the first laser 101, and the second laser beam L2 is emitted by the second laser 101, and therefore, the description of the present application is omitted here.

The light combining component 103 is located between the laser 101 and the second lens assembly 104, and includes a reflective region and a transmissive region, wherein the reflective region includes a first reflective region 1032a and a second reflective region 1032b, the transmissive region includes a first transmissive region 1031a and a second transmissive region 1031b, and the reflective region and the transmissive region are disposed at an interval. In the present embodiment, along the X direction, a first reflective region 1032a, a first transmissive region 1031a, a second reflective region 1032b, and a second transmissive region 1031b are sequentially disposed; in another possible embodiment, a first transmissive region, a second reflective region, a second transmissive region, and a first reflective region are sequentially disposed along the X direction. In one possible embodiment, the transmissive region may be transparent glass or other material that allows the red, blue, and green laser light emitted by the laser 101 to pass through; in a possible embodiment, the reflective region may be made of glass, etc., and is coated with a film layer capable of reflecting red, blue and green light rays near the second lens assembly 104, or coated with a film layer capable of reflecting full spectrum light rays, which is not limited in this application. In one possible embodiment, the transmissive region is made of transparent glass or other material that can at least transmit the red, blue, and green laser beams emitted by the laser 101; the first transmission region 1031a and the second transmission region 1031b of the light combining component 103 near the laser 101 may be coated with antireflection films, or, in a possible implementation manner, both sides of the light combining component 103 near the laser 101 are coated with antireflection films, which is not limited in this application. In a possible embodiment, the antireflection film may increase the transmittance only for the light beam emitted by the laser 101, for example, if the laser 101 emits blue, red, and green laser light, the antireflection film may increase the transmittance only for the blue, red, and green laser light, or in a possible embodiment, the antireflection film may be a full-spectrum antireflection film, which increases the transmittance for the full-spectrum light, which is not limited in this application. In one possible embodiment, the sum of the areas of the first and

second transmissive regions

1031a and 1031b is smaller than the sum of the areas of the first and second

reflective regions

1032a and 1032 b.

The second lens group 104 is located between the light combining component 103 and the angle adjusting component 105, and the first laser light L1 and the second laser light L2 emitted by the laser 101 enter the surface of the second lens group 104 after passing through the light combining component 103, are converged by the second lens group 104, and then are emitted to the surface of the angle adjusting component 105. In a possible embodiment, the positions of the first laser light L1 and the second laser light L2 incident on the surface of the second lens group 104 may be symmetrical or asymmetrical with respect to the optical axis of the second lens group 104, which is not limited in this application.

The laser beam incident on the angle adjustment component 105 is emitted toward the light combining component 103 by the angle adjustment component 105, and the beam is collimated by the second lens group 104, then enters the light combining component 103, and is reflected toward the light emitting direction by the reflection region of the light combining component 103.

The first laser light L1 emitted by the laser 101 passes through the first transmission region 1031a of the light combining component 103, enters the surface of the second lens group 104, is converged by the second lens group 104, and then is emitted to the angle adjusting component 105; the second laser light L2 enters the surface of the second lens group 104 through the second transmission region 1031b of the light combining component 103, is converged by the second lens group 104, and then is emitted to the angle adjusting component 105; the light beams incident on the angle adjustment component 105 are emitted toward the light combination component 103 by the angle adjustment component 105, and the light beams enter the first reflection region 1032a and the second reflection region 1032b of the light combination component 103 and are reflected by the first reflection region 1032a and the second reflection region 1032b toward the light emitting direction.

In the light source module structure that this embodiment provided, angle adjustment part 105 carries out angle adjustment to the red, blue and green light beam of incidenting to by the reflection zone reflection back of closing light subassembly 103, originally by the less uniformity of the facula uniformity of laser 101 outgoing three-colour laser facula become good, thereby make subsequent even light effect improve, the picture quality promotes.

In this embodiment, the two laser beams emitted by the laser 101 may be two laser beams emitted by the laser 101 at the same time, or two laser beams emitted by the laser according to a time sequence, so that the laser can be notified in a time-sharing manner to control the laser to emit different laser beams.

Fig. 12 provides a schematic view of an optical path structure of a light source assembly, as shown in fig. 12, in the embodiment shown in fig. 9 to 11 of the present application, the light source assembly may further include a first lens group 102, where the first lens group 102 includes a convex lens and a concave lens, and is used for converging the first laser light L1 and the second laser light L2 emitted from the laser 101, so as to reduce the size of a light spot, further reduce the area of a transmission region in the light combining assembly 103, and facilitate miniaturization of the light combining assembly 103. In a possible embodiment, the first lens group 102 may include two convex lenses and two concave lenses, wherein one convex lens and one concave lens are disposed along the y direction to reduce the beam of the first laser light L1 emitted from the laser 101, and the other convex lens and the other concave lens are disposed along the y direction to reduce the beam of the second laser light L2 emitted from the laser 101.

Fig. 13 provides an optical path diagram of a light source module, as shown in fig. 13, the light source module further includes a reflector assembly 106, and one side of the reflector assembly 106 close to the light combining assembly 103 may be plated with a film layer capable of reflecting red, green, and blue light beams, or plated with a total reflection film layer, which is not limited in this application.

Fig. 14 provides an optical path diagram of another light source module, as shown in fig. 14, the mirror assembly 106 includes a first reflector 1061, a second reflector 1062, and a third reflector 1063, for example, in a light beam emitted from the laser 101, one side of the mirror assembly 106 close to the light combining assembly 103 may be coated with a film layer capable of reflecting red, green, and blue light beams, or coated with a total reflection film layer, which is not limited in this application.

Fig. 15 provides an optical path diagram of another light source assembly, as shown in fig. 15, for example, among light beams emitted by the laser 101, a light beam corresponding to the first reflecting element 1061 is a blue light beam, a light beam corresponding to the second reflecting element 1062 is a green light beam, and a light beam corresponding to the third reflecting element 1063 is a red light beam, wherein one side of the first reflecting element 1061, which is close to the laser 101, is coated with a film layer capable of reflecting at least the blue light beam; the second reflecting member 1062 is a dichroic mirror, which can reflect the green light beam and at least transmit the blue light beam; the third reflecting member 1063 is a dichroic mirror that reflects the red light beam and transmits at least the blue and green light beams.

Fig. 16 provides an optical path diagram of another light source module, as shown in fig. 16, the light source module further includes a reflector assembly 106, wherein the first reflector 1061 and the second reflector 1062 may be coated with a full-spectrum reflective film, or coated with a film capable of reflecting at least a color of a light beam corresponding to the first reflector 1061 or the second reflector 1062, which is not limited in this application.

Fig. 17 provides an optical path structure diagram of still another light source assembly of the present application.

As shown in fig. 17, the laser 101 may emit three laser beams, and the color of each laser beam in the three laser beams is not limited as long as the overall color of the three laser beams emitted by the laser, i.e., the three laser beams of the first laser beam L1, the second laser beam L2, and the third laser beam L3, includes red, green, and blue laser beams. The laser 101 may emit three laser beams simultaneously or three laser beams in a time-sharing sequence, which is not limited in this application. In one possible embodiment, the laser 101 may have three color laser chips that can be controlled independently, which is not limited in this application.

In this embodiment, the light combining component 102 includes a transmissive region and a reflective region, wherein the transmissive region includes a first transmissive region 1031a, a second transmissive region 1031b, and a third transmissive region 1031c, and the reflective region includes a first reflective region 1032a, a second reflective region 1032b, and a third reflective region 1032 c. Illustratively, the transmissive area and the reflective area are disposed obliquely to the light incident surface of the angle adjusting member 105 at the same angle, and the reflective area and the transmissive area are disposed at an interval. The materials of the reflective region and the transmissive region, the composition and the position of the second lens assembly 104, and the composition and the position of the angle adjustment component 105 are the same as those in the above embodiments, and are not described herein again.

The first laser light L1 emitted by the laser 101 enters the first transmission region 1031a of the light combining component 102, passes through the first transmission region 1031a and then enters the second lens group 104, the second laser light L2 enters the second transmission region 1031b of the light combining component 102, passes through the second transmission region 1031b and then enters the second lens group 104, the third laser light L3 emitted by the laser 101 enters the third transmission region 1031c of the light combining component 102, passes through the third transmission region 1031c and then enters the second lens group 104; the second lens group 104 converges the light beam passing through the light combining component 102, and then emits the light beam to the angle adjusting component 105, the angle adjusting component 105 emits the light beam towards the light combining component 102, the light beam is collimated by the second lens group 104 and then enters the reflection region of the light combining component 102, and is reflected towards the light emitting direction by the reflection region of the light combining component 102.

In a possible implementation manner, the light combining component 102 is only composed of the second reflective area and the third reflective area, the transmissive area is hollow, and the first reflective area is not provided; in one possible embodiment, the light combining component includes a first transmissive region, a second transmissive region, a third transmissive region, a second reflective region, and a third reflective region. In summary, the light combining component at least comprises a second reflection area and a third reflection area.

In one embodiment, the light exit surface of the angle adjusting member further comprises a microstructure 107, which can converge the light exiting from the angle adjusting member 105. Exemplarily, as shown in fig. 18, a partial enlarged view of an angle adjustment component 105 and a second lens group 104 provided in the embodiments of the present application is provided.

The light exit surface of the angle adjustment member 105 has a microstructure, and in one possible embodiment, the microstructure 107 is a convex lens, or in another possible embodiment, the microstructure is a particle coated on the surface of the angle adjustment member and having a convex lens shape and capable of performing an angle adjustment function. In one possible embodiment, the microstructures may be uniformly arranged or non-uniformly arranged in the form of particles of the same size and shape; in another possible implementation manner, the sizes of the microstructures may be different, and in a possible implementation manner, the microstructures in the shape of the convex lens may be doped with structures in other shapes.

The microstructure 107 is disposed on the surface of the angle adjustment member 105, and plays a certain role in converging the outgoing light beam of the angle adjustment member 105.

Through the arrangement of the microstructures, the divergence degree of the emergent light beam of the angle adjusting component 105 is reduced to a certain extent, the divergence degree of the emergent light beam of the angle adjusting component 105 is reduced, then the emergent light beam enters the second lens group 104, is collimated by the second lens group 104, enters the light combining component 103, and is reflected towards the light emitting direction by the light combining component 103.

As shown in fig. 18, the divergence degree of the outgoing light beam of the angle adjustment component is reduced, and compared with the case without the microstructure, the light beam concentration of the angle adjustment component is improved, the light beams incident to the light combining component are increased, and the light receiving efficiency of the light source component is improved.

Fig. 19 provides a projection apparatus, which includes a light source assembly 10, an optical engine assembly 11, and a lens assembly 12, wherein the light source assembly 10 is configured to emit laser light, the optical engine assembly 11 is configured to modulate a light beam emitted from the light source assembly 10, and the lens assembly 12 is configured to perform transmissive projection on the light beam modulated by the optical engine assembly 11 to form a picture.

All figures in this application are only schematic illustrations.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. The term "at least one of a and B" in the present application is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, at least one of a and B may mean: a exists alone, A and B exist simultaneously, and B exists alone. The term "A, B and at least one of C" means that there may be seven relationships that may mean: seven cases of A alone, B alone, C alone, A and B together, A and C together, C and B together, and A, B and C together exist. In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A light source assembly, comprising:

the laser is used for emitting a light beam comprising red, blue and green laser;

the light combining component is positioned between the laser and the second lens group and comprises a reflecting area, the reflecting area comprises a first reflecting area and a second reflecting area, and the first reflecting area and the second reflecting area are arranged at intervals;

the second lens group is positioned between the light combination component and the angle adjusting component and used for converging laser emitted by the laser;

an angle adjusting member;

and a beam of laser emitted by the laser enters the second lens group through the position between the first reflecting area and the second reflecting area, is converged by the second lens group and then enters the angle adjusting component, the angle adjusting component emits the beam towards the light combining component after adjusting the angle of the incident beam, enters the light combining component after being collimated by the second lens group, and is reflected towards the light emitting direction by the first reflecting area and the second reflecting area of the light combining component.

2. The light source module as claimed in claim 1, wherein the light combining module further comprises a transmissive region disposed between the first reflective region and the second reflective region, and the first reflective region and the transmissive region are disposed obliquely to the light incident surface of the angle adjusting member.

3. A light source assembly, comprising:

the laser device is used for emitting first laser and second laser, and the two laser beams comprise beams of red, green and blue laser;

the light combination component is positioned between the laser and the second lens group and comprises a reflecting area;

an angle adjusting member;

the laser device comprises a laser device, a light combination assembly, an angle adjustment component, a light combination assembly and a reflection area, wherein first laser emitted by the laser device is incident to the second lens assembly after passing through the light combination assembly, second laser is incident to the second lens assembly after passing through the light combination assembly, the second lens assembly converges laser emitted by the laser device and then emits a light beam to the angle adjustment component, the angle adjustment component emits the light beam to the direction of the light combination assembly after adjusting the angle of an incident light beam, the light beam is incident to the light combination assembly after being collimated by the second lens assembly and is reflected to the light emitting direction by the reflection area of the light combination assembly;

the first laser and the second laser are incident to the second lens group from two sides of the reflection area of the light combination assembly.

4. The light source module as recited in claim 2, wherein the light combining module comprises a transmissive region, the transmissive region comprises a first transmissive region and a second transmissive region, and the first transmissive region and the second transmissive region are located on two sides of the reflective region.

5. The light source module as claimed in claim 3, wherein the reflective region is a second reflective region, and the light combining module further comprises a first reflective region disposed at a distance from the first reflective region and on one side of the second reflective region.

6. The light source module according to claim 2 or 4, wherein the transmissive region is transparent glass.

7. The light source module according to claim 2 or 4, wherein the transmissive region has an openwork structure.

8. The light source component of claim 1 or 3, wherein a side of the reflection region near the second lens group is coated with a film layer capable of reflecting at least red, green and blue laser light.

9. The light source assembly according to claim 1 or 3, wherein the angle adjusting member is a diffuse reflection structure.

10. The utility model provides a projection equipment, includes light source subassembly, ray apparatus subassembly and lens subassembly, the light source subassembly is used for sending laser, the ray apparatus subassembly is right the laser that the light source subassembly sent modulates, the lens subassembly will be by the light beam of ray apparatus subassembly outgoing is thrown to form the picture.