CN111427225B

CN111427225B - Laser light source and laser projection equipment

Info

Publication number: CN111427225B
Application number: CN201910023575.8A
Authority: CN
Inventors: 田新团; 杨长明
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2022-09-23
Anticipated expiration: 2039-01-10
Also published as: CN115685658A; CN111427225A; CN115793367A

Abstract

The application provides a laser light source and laser projection equipment, which comprise a laser and a shell provided with a laser mounting port, wherein the laser is arranged in the laser mounting port; the laser comprises a base and a substrate, wherein the base is used for fixedly supporting one surface of the substrate, the other surface of the substrate is provided with a light-emitting chip which is a light-emitting surface of the substrate, and the laser is fixedly connected with the shell through the base; the laser light source further comprises a seal comprising a top and a side; the top covers the light emitting surface of the substrate, the side portion wraps the periphery of the base, and the side portion is in interference fit with the laser mounting hole. The application provides a laser light source and laser projection equipment, has solved the sealed problem of laser instrument with the direct time of shell, makes and reaches good sealed effect between laser instrument and the shell, avoids the dust to get into the laser light source inner chamber from laser instrument and shell assembly department, helps guaranteeing laser light source's life.

Description

Laser light source and laser projection equipment

Technical Field

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

Background

The laser light source is a light source module of the laser display device, and is one of the core components of the laser display device. Typically, a laser light source includes a laser and a housing for mounting optical components. Fig. 1 is a schematic structural diagram of a conventional laser light source. As shown in fig. 1, the laser light source includes a laser 01 and a housing 02; the shell 02 is provided with a laser installation port, and the laser 01 is embedded in the laser installation port and fixedly connected with the shell 02; the optical assembly is arranged to be mounted within the cavity of the housing 02.

In order to improve the sealing performance between the laser 01 and the housing 02 and prevent dust from entering the cavity of the laser light source from the matching gap between the laser 01 and the housing 02, a sealing element 03 is often required to be arranged at the matching position between the laser 01 and the housing 02. Fig. 2 is a schematic view of a sealing assembly structure of the laser light source. As shown in fig. 2, the sealing element 03 is an annular structure with a protrusion on the inner side, the protrusion on the inner side of the sealing element 03 is clamped in a groove on the side surface of the laser 01, the outer side of the sealing element 03 is attached to the housing 02, the sealing element 03 and the housing 02 are in interference fit, and the sealing element 03 is deformed by the extrusion of the housing 02, so that the laser 01, the housing 02 and the sealing element 03 are sealed with each other.

However, since the groove on the side surface of the laser 01 is narrow and generally only about 1mm, the sealing element 03 can be assembled into the groove on the side surface of the laser 01 only by means of assistance of a tool, which easily causes the assembly of the sealing element 03 to be complicated and time-consuming. In the process of assembling the laser 01, the housing 02 and the sealing element 03, it is found that when the laser 01 assembled with the sealing element 03 is assembled on the housing 02, the sealing element 03 is extruded by the housing 02 and is easy to separate from the groove on the side surface of the laser 01, so that the sealing element 03 is not uniformly contacted with the laser 01 and the housing 02, the laser 01 and the housing 02 are sealed poorly, dust in air can enter the cavity of the housing 02, and the service life of the laser light source is shortened.

Disclosure of Invention

The application provides a laser source and laser projection equipment has solved the sealed problem of laser instrument with the direct time of shell, avoids the dust to get into the laser source inner chamber from laser instrument and shell assembly department, helps guaranteeing laser source's life.

In a first aspect, the present application provides a laser light source, including a laser and a housing provided with a laser mounting port, where the laser is arranged in the laser mounting port; the laser comprises a base and a substrate, wherein the base is used for fixedly supporting one surface of the substrate, the other surface of the substrate is provided with a light-emitting chip which is a light-emitting surface of the substrate, and the laser is fixedly connected with the shell through the base;

the laser light source further comprises a seal comprising a top and a side;

the top covers the light emergent surface of the substrate, the side part wraps the periphery of the base, and the side part is in interference fit with the laser mounting hole.

In a second aspect, the present application provides a laser projection apparatus, which includes a light source, a light modulation device and a lens, wherein the light source is the above laser light source.

In laser light source and laser projection equipment that this application embodiment provided, laser light source includes laser instrument, shell and sealing member, the sealing member cover is established on the laser instrument, the lateral part of sealing member respectively with the side of laser instrument with the extrusion laminating of the laser instrument installing port side that sets up on the shell, the sealing member is used for the clearance between sealed laser instrument and the shell. More specifically, the sealing member includes top and lateral part in this application, and the top covers the play plain noodles of base plate, lateral part parcel the base all around and with laser instrument installing port interference fit. Thereby the medial surface of lateral part and the side extrusion laminating of the base of laser instrument all around, the lateral surface of lateral part respectively with the side extrusion laminating of laser instrument installing port. In specific use, the sealing element comprising the top part and the side part can be directly sleeved on the laser, and the auxiliary installation is carried out without tools, so that the assembly and installation of the sealing element are convenient; and the top of sealing member covers the play plain noodles of base plate, can play preliminary sealed effect, be convenient for reach the purpose of the base plate support sealing member of laser instrument simultaneously, be favorable to increasing the support area of laser instrument to the sealing member, effectively avoid causing the sealing member to shift because of the squeezing action of shell in the assembling process, guarantee the lateral part and the laser instrument and the shell even contact of sealing member, make and reach good sealed effect between laser instrument and the shell, prevent that the dust from getting into laser light source's inner chamber, and then guarantee laser light source's life.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of a laser light source according to the prior art;

FIG. 2 is a schematic view of a sealing assembly structure of a laser light source in the prior art;

fig. 3 is an exploded view of a laser light source provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a laser according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a seal provided in an embodiment of the present application;

FIG. 6 is an assembly view of a laser and a seal provided by an embodiment of the present application;

fig. 7 is a cross-sectional view of a laser light source according to an embodiment of the present disclosure;

fig. 8 is a partially enlarged view of a laser light source according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a laser projection apparatus according to an embodiment of the present application.

Wherein:

1-laser, 101-base, 102-base plate, 103-fly eye lens, 2-shell, 201-laser installation port, 202-second guide slope, 203-press angle, 3-sealing element, 301-side, 302-top, 303-first guide slope, 304-strengthen angle, 305-first pair of side walls, 306-second pair of side walls, 900-laser projection device, 901-laser light source, 902-light modulation device, 903-lens, 904-projection medium.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 3 is a schematic structural diagram of a laser light source provided in an embodiment of the present application. As shown in fig. 3, the laser light source provided by the embodiment of the present application includes a laser 1, a housing 2, and a sealing assembly 3.

Fig. 4 is a schematic structural diagram of a laser 1 according to an embodiment of the present application. As shown in fig. 4, the laser 1 includes a base 101 and a substrate 102. The base 101 is fixedly connected with one surface of the substrate 102 in a supporting manner, the other surface of the substrate 102 is provided with a light emitting chip, the surface of the substrate 102 provided with the light emitting chip is a light emitting surface on the substrate 102, and the laser 1 is fixedly connected with the shell 2 through the base 101.

Further, the laser 1 further includes a fly-eye lens 103, the fly-eye lens 103 is covered on the light emitting surface of the light emitting chip, the fly-eye lens 103 is fixedly connected to the substrate 102, and a certain margin surface exists on the light emitting surface of the substrate 102 except for a plane occupied by the fly-eye lens 103.

In the embodiment of the present application, a laser mounting port 201 is provided on the housing 2, and the laser mounting port 201 is used for mounting the laser 1. Specifically, the laser 1 is sleeved in the laser mounting port 201, and the light emitting direction of the laser 1 faces the cavity of the housing 2. If the base 101 is provided with the mounting hole and the limiting hole, the laser 1 and the shell 2 are fixedly connected through the mounting hole and the limiting hole, so that the laser 1 is fixed in the laser mounting opening 201. The inner contour of the laser mounting port 201 is a polygon similar to the outer contour of the laser 1. For example, in the present embodiment, the outer contour of the base 101, the substrate 102, and the fly-eye lens 103 is approximately rectangular, and the inner contour of the laser mounting opening 201 is approximately rectangular.

Sealing member 3 cover is established on laser instrument 1, just sealing member 3 sets up

laser instrument

1 and 2 cooperation departments of shell, sealing member 3 respectively with

laser instrument

1 and 2 extrusion fit of shell. The sealing element 3 is used for interference fit between the laser 1 and the shell 2, so that the laser 1, the shell 2 and the sealing element 3 are tightly attached, the laser 1 and the shell 2 are sealed, dust is prevented from entering an inner cavity of the shell 2 from a gap between the laser 1 and the shell 2, and a laser projection cavity is sealed.

Fig. 5 is a schematic structural diagram of a sealing member 3 according to an embodiment of the present disclosure, fig. 6 is a schematic structural diagram of an assembly of a laser 1 and the sealing member 3, and fig. 7 is a cross-sectional view of a laser light source according to an embodiment of the present disclosure. As shown in fig. 5 to 7, the sealing member 3 provided in the embodiment of the present application includes a side portion 301 and a top portion 302, and the top portion 302 is disposed at a top end edge of the side portion 301. When the laser light source is assembled, the sealing member 3 is interference fitted into the laser mounting ports 201 of the laser 1 and the housing 2. Specifically, the top 302 covers the light-emitting surface of the substrate 102, the side 301 wraps around the base 101, and the side 301 is in interference fit with the laser mounting opening 201.

Further, the side edge of the top 302 surrounds the fly-eye lens 103; the inner side surfaces of the side parts 301 are respectively extruded and attached with the side surfaces of the base 101 and the substrate 102, and the outer side surfaces of the side parts 301 are respectively extruded and attached with the side surfaces of the laser mounting port 201; the inner surface of the top portion 302 conforms to the top surface of the substrate 102. In this way, in the embodiment of the present application, the sealing member 3 fully utilizes the vacant surface of the substrate 102, so as to improve the sealing effect between the laser 1 and the housing 2.

In the specific assembling process of the laser light source provided by the embodiment of the application, the sealing element 3 is sleeved on the laser 1, the top 302 covers the light-emitting surface of the substrate 102, the inner surface of the top 302 is attached to the top surface of the substrate 102, and the inner side surfaces of the side parts 301 are respectively attached to the side surfaces of the base 101 and the substrate 102 in an extruding manner; then, the laser 1 sleeved with the sealing element 3 is placed in the laser mounting opening 201 of the shell 2, the outer side surfaces of the side parts 301 are respectively extruded and attached to the side surfaces of the laser mounting opening 201, the laser 1 and the shell 2 are fixed, and the sealing element 3 seals a gap between the laser 1 and the shell 2.

In this application embodiment, sealing member 3 can directly overlap and establish at laser instrument 1, is convenient for realize sealing member 3 location fast, helps improving sealing member 3's installation progress, guarantees sealing member 3's sealed effect to a certain extent. When the sealing element 3 is assembled with the laser 1, the sealing element 3 is directly sleeved from one side of the light-emitting surface of the substrate 102 of the laser 1, and the sealing element 3 can be directly assembled in place without an auxiliary tool due to no obstruction, so that the installation and assembly of the sealing element 3 are facilitated. Compare in the sealing member among the prior art, this application embodiment provides that sealing member 3 installs more conveniently, and sealed effect guarantees more easily.

In the embodiment of the present application, the sealing member 3 is made of an extruded deformable material, such as silicone rubber, etc. In the embodiments of the present application, a rubber seal is preferred. The rubber sealing element has good elasticity and certain hardness, is convenient to provide good toughness in use, and effectively avoids excessive deformation in the installation process.

In the laser light source provided in the embodiment of the present application, the top portion 302 covers the light emitting surface of the substrate 102, which can perform a primary sealing function, and at the same time, the laser 1 can provide a supporting force for the sealing member 3, such as the support of the substrate 102, through the top portion 302. In this way, the substrate 102 supporting the sealing member 3 using the laser effectively prevents the sealing member 3 from being displaced due to the pressing action of the housing 2 during the assembly process, and ensures that the sealing member 3 is uniformly contacted with the laser 1 and the housing 2. The medial surface of lateral part 301 extrudees the laminating with the side of base 101 and base plate 102 respectively, the lateral surface of lateral part 301 extrudees the laminating with the side of laser instrument installing port 201 respectively, increase the area of contact of sealing member 3 and laser instrument 1 and shell 2, increase the frictional force who guarantees sealing member 3 and laser instrument 1 and shell 2 to a certain extent in the assembling process, avoid sealing member 3 to shift, also be favorable to further guaranteeing sealing member 3 and laser instrument 1 and shell 2 even contact simultaneously. So, the sealing member 3 that this application embodiment provided makes and reaches good sealed effect between laser instrument 1 and the shell 2, has guaranteed the leakproofness between laser instrument 1 and the shell 2 among the laser light source, prevents that the dust from getting into laser light source's inner chamber, and then guarantees laser light source's life.

In the embodiment of the present application, the side portion 301 of the sealing member 3 needs to ensure an interference of 0.1-0.8mm after the sealing member 3 is assembled. The magnitude of interference of 0.1-0.8mm is convenient for not only ensuring the sealing effect of the sealing element 3, but also being convenient for assembly and installation. In the present embodiment, the sealing member 3 preferably has an interference of 0.3mm after the assembly. In this manner, the thickness of the side portion 301 is selected in conjunction with the gap size of the laser 1 and the housing 2 according to the interference. For example, when the gap size between the laser 1 and the housing 2 is 2mm, the thickness of the side portion 301 may be selected to be 2.3 mm.

In the embodiment of the present application, in order to ensure good supporting strength of the top portion 302 of the sealing member 3, the thickness of the top portion 302 is 0.5-5 mm. Preferably, the thickness of the top portion 302 is 2mm, and the 2mm thickness of the top portion 302 facilitates providing good compression of the seal 3 during molding, thereby ensuring the supporting strength of the seal 3 and reducing the waste of the thickness of the top portion 302.

Further, in the embodiment of the present application, as shown in fig. 5, 6 and 8, a first guiding inclined plane 303 is provided at a junction of the top portion 302 and the side portion 301, and the first guiding inclined plane 303 is inclined toward the side portion 301 along the top portion 302. When the laser 1 on which the sealing member 3 is fitted is assembled with the housing 2, the first guide slope 303 has a guiding function, and helps to prevent the sealing member 3 from being deformed by extrusion in advance during the assembly process. Therefore, the top of the sealing element 3 is provided with the first guide inclined plane 303, so that the assembly of the shell 2 is facilitated, the extrusion deformation of the sealing element 3 is avoided to a great extent to appear in advance, and the uniformity of the extrusion stress of the sealing element 3 is ensured.

Further, in the embodiment of the present application, as shown in fig. 7, a second guiding inclined plane 202 is provided at the top of the laser mounting port 201, and the second guiding inclined plane 202 is inclined toward the bottom surface of the housing 2 along the side surface of the laser mounting port 201. The second guiding inclined surface 202 helps to enlarge the size of the end of the laser mounting opening 201 to some extent and has a guiding function, so that the laser can be conveniently mounted, and the sealing member 3 is prevented from being extruded and deformed in advance in the assembling process.

In this application embodiment, laser source includes first direction inclined plane 303 and second direction inclined plane 202, when the laser instrument 1 that will overlap and be equipped with sealing member 3 and shell 2 assembly, second direction inclined plane 202 earlier with the cooperation of first direction inclined plane 303, double guide effect has, and can tentatively fix a position laser instrument 1 and shell 2, the assembly of the shell 2 of further being convenient for and avoid sealing member 3 extrusion deformation to appear in advance in assembling process, guarantee the homogeneity of sealing member 3 extrusion atress.

In the embodiment of the present application, the side portion 301 may cover the groove on the side surface of the laser 1, and a protrusion may be further provided on the inner wall of the side portion 301, and the protrusion fills the groove on the side surface of the laser 1. The arrangement of the protrusion for filling the groove on the side surface of the laser 1 can position the sealing element 3 in the assembling process, and the sealing effect of the sealing element 3 on the laser 1 and the shell 2 is improved.

In the present embodiment, the top 302 of the seal 3 includes a reinforcing corner 304, the reinforcing corner 304 being located at a corner of the top 302. In the embodiment of the present application, four corners of the substrate 102 on which the fly-eye lens 103 is mounted are left blank, and the inner side surface of the reinforcing corner 304 is pressed and bonded to the left blank four corners of the substrate 102. As shown in fig. 5, reinforcing corners 304 are provided at each of the 4 corners of the top portion 302. The reinforcing angle 304 helps to increase the supporting strength of the laser 1 to the sealing member 3, further avoids the sealing member 3 from being displaced during assembly and use, and further ensures that the sealing member 3 is uniformly contacted with the laser 1 and the housing 2. And the provision of the reinforcing corners 304 at the corners of the top portion 302 effectively ensures that the seal 3 is fully fitted with the laser 1.

Furthermore, in the embodiment of the present application, a pressing corner 203 is disposed in the laser mounting port 201, the pressing corner 203 is disposed at a corner of the laser mounting port 201, and a top surface of the pressing corner 203 is attached to an outer side surface of the reinforcing corner 304 in an extruding manner, that is, the pressing corner 203 is matched with the reinforcing corner 304. When the laser light source is assembled, the pressing corner 203 presses the reinforcing corner 304, so that the top 302 is prevented from being stretched when the sealing member 3 is pressed and deformed, the top 302 cannot be attached to the substrate 102, and poor sealing between the laser 1 and the housing 2 is further effectively prevented.

In the present embodiment, the outer contour of the side portion 301 of the seal 3 is similarly deformed to the outer contour of the laser 1. For example, the outer contour of the sealing member 3 is rectangular, that is, the side portion 301 of the sealing member 3 includes two pairs of parallel side walls, which will be referred to as a first pair of side walls 305 and a second pair of side walls 306 respectively for convenience of description, and generally the first pair of side walls 305 is attached to the width direction of the laser 1, and the second pair of side walls 306 is attached to the length direction of the laser 1.

In the present embodiment, the bottom ends of the first pair of sidewalls 305 contact the upper surface of the base 101. During assembly, the base 101 may support the sealing member 3 by supporting the first pair of sidewalls 305 when the housing 2 compresses the sealing member 3, which may help to avoid the sealing member 3 from being displaced due to the compression of the housing 2.

As shown in fig. 4, the laser 1 provided in the embodiment of the present application further includes a connection pin for electrically connecting the laser 1, and in order to prevent the sealing member 3 from affecting the use of the connection pin on the laser 1, the height of the second pair of sidewalls 306 is generally smaller than the height of the first pair of sidewalls 305. In the embodiment of the present application, a groove is formed in the middle of the second pair of sidewalls 306, and both ends of the second pair of sidewalls 306 are flush with the first pair of sidewalls 305, that is, the height of the middle of the second pair of sidewalls 306 is less than the height of both ends of the second pair of sidewalls 306. So, compare in the second to the structure of lateral wall 306 for unified parallel and level inseparabler in the laminating of the base 101 of laser instrument 1, on the concrete structure's that satisfies laser instrument 1 basis, be favorable to guaranteeing more that it reaches good sealed effect to reach between laser instrument 1 and the shell 2.

Based on the laser light source provided by the embodiment of the application, the embodiment of the application also provides laser projection equipment. Fig. 9 is a schematic structural diagram of a projection apparatus according to an embodiment of the present application. As shown in fig. 9, a laser projection apparatus 900 provided in an embodiment of the present application includes a laser light source 901, a light modulation device 902, and a lens 903. The laser light source 901 provides illumination for the light modulation device 902, and the light modulation device 902 modulates the light beam emitted by the laser light source 901, outputs the light beam to the lens 903 for imaging, and projects the light beam to a projection medium 904 to form a projection picture. The laser light source 901 is the laser light source described in the above embodiment, and for the specific structure of the laser light source 901, reference is made to the detailed description of the above embodiment, which is not repeated herein.

All the embodiments in the present specification are described in a progressive manner, the same and similar parts among the embodiments may be referred to each other, each embodiment is mainly described as different from other embodiments, and related parts may be referred to part of the description of the method embodiments. It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A laser light source comprises a laser and a shell provided with a laser mounting port, wherein the laser is arranged in the laser mounting port; the laser is characterized by comprising a base and a substrate, wherein the base fixedly supports one surface of the substrate, the other surface of the substrate is provided with a light-emitting chip which is a light-emitting surface of the substrate, and the laser is fixedly connected with the shell through the base;

the laser light source further comprises a seal comprising a top and a side;

the top covers the light emitting surface of the substrate, the side part wraps the periphery of the base, and the side part is in interference fit with the laser mounting hole;

the laser installation hole is characterized in that a first guide inclined plane is arranged outside the joint of the top and the side, a second guide inclined plane is arranged in the laser installation hole, and the first guide inclined plane and the second guide inclined plane are staggered.

2. The laser light source of claim 1, wherein the top portion includes reinforcing corners at corners of the top portion, the reinforcing corners press against the substrate.

3. The laser light source of claim 2, wherein a compression angle is disposed in the laser mounting port, the compression angle being pressed against the reinforcement angle.

4. The laser light source of claim 1, wherein the top portion has a thickness of 2 mm.

5. The laser light source of claim 1, wherein the side portion comprises a first pair of side walls, a bottom end of the first pair of side walls being in contact with an upper surface of the base; and/or the presence of a gas in the atmosphere,

the side part comprises a second pair of side walls, a groove is formed in the middle of the second pair of side walls, and two ends of the second pair of side walls are flush with the first pair of side walls.

6. The laser light source of claim 1, wherein the inner wall of the side portion is provided with protrusions that fill grooves in the side of the laser.

7. The laser light source of claim 1, wherein the seal is a rubber seal.

8. A laser projection apparatus, comprising a light source, a light modulation device and a lens, wherein the light source is the laser light source of any one of claims 1 to 7.