CN216361906U

CN216361906U - Laser projection device

Info

Publication number: CN216361906U
Application number: CN202123182794.2U
Authority: CN
Inventors: 逄相来
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-04-22
Anticipated expiration: 2031-12-16

Abstract

The application discloses laser projection equipment belongs to the projection display field. The laser projection apparatus includes: a housing, a conditioning assembly, and a plurality of optics. The adjusting assembly and the optical devices can be located in the shell, and the fixing portion in the adjusting assembly is adjusted to move on the supporting portion along the arrangement direction of the first optical device and the second optical device so as to drive the first optical device to move on the supporting portion, and further the distance between the first optical device and the second optical device is adjusted to meet actual requirements. Therefore, even if the actual assembly positions of the first optical device and the second optical device are deviated from the theoretical assembly positions, the probability that the actual assembly positions of the first optical device and the second optical device are deviated from the theoretical assembly positions can be effectively reduced through the adjusting assembly. In addition, after laser beams emitted by a laser in a light source component of the laser projection equipment pass through each optical device, the display effect of projected images is good.

Description

Laser projection device

Technical Field

The application relates to the field of projection display, in particular to laser projection equipment.

Background

With the development of the photoelectric technology, the requirements for the projection picture of the laser projection device are higher and higher. The laser projection apparatus mainly includes: the casing to and be located light source subassembly, ray apparatus subassembly and the camera lens in the casing. The light source assembly is used for providing laser beams for the optical-mechanical assembly, the optical-mechanical assembly is used for modulating the laser beams provided by the light source assembly, and the lens is used for projecting pictures based on the laser beams modulated by the optical-mechanical assembly.

The light source assembly, the optical-mechanical assembly and the lens in the housing generally include a plurality of optical devices (e.g., lenses), and the projection of the projection image can be realized by the laser projection apparatus through the mutual cooperation of the plurality of optical devices.

However, there is a processing error for each optical device, and there is an assembly error for each optical device in the housing when assembled. Therefore, there is often a deviation between the actual mounting position and the theoretical mounting position of each optical device, resulting in poor effect of the projection picture of the laser projection apparatus.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides laser projection equipment. The problem that the effect of a projection picture projected by laser projection equipment in the prior art is poor can be solved, and the technical scheme is as follows:

in one aspect, a laser projection apparatus is provided, the laser projection apparatus comprising:

a housing, and an adjustment assembly and a plurality of optics positioned within the housing;

the adjustment assembly includes: the supporting part is fixed in the shell and is provided with a supporting surface for supporting the fixing part and a sliding groove positioned on the supporting surface; the fixing part is fixedly connected with a first optical device, one side of the fixing part, which faces the supporting part, is provided with a sliding block, the sliding block is positioned in the sliding groove, and the first optical device is any one of the plurality of optical devices;

wherein the slider is configured to: the sliding groove slides to drive the first optical device to move on the supporting portion along a target direction so as to adjust the distance between the first optical device and a second optical device, the second optical device is an optical device adjacent to the first optical device in the plurality of optical devices, and the target direction is the arrangement direction of the first optical device and the second optical device.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a laser projection device, comprising: a housing, a conditioning assembly, and a plurality of optics. The adjusting assembly and the optical devices can be located in the shell, and the fixing portion in the adjusting assembly is adjusted to move on the supporting portion along the arrangement direction of the first optical device and the second optical device so as to drive the first optical device to move on the supporting portion, and further the distance between the first optical device and the second optical device is adjusted to meet actual requirements. Therefore, even if the actual assembly positions of the first optical device and the second optical device are deviated from the theoretical assembly positions, the probability that the actual assembly positions of the first optical device and the second optical device are deviated from the theoretical assembly positions can be effectively reduced through the adjusting assembly. In addition, after laser beams emitted by a laser in a light source component of the laser projection equipment pass through each optical device, the display effect of projected images is good.

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 partial structural diagram of a laser projection apparatus provided in an embodiment of the present application;

FIG. 2 is an exploded view of the laser projection device shown in FIG. 1;

fig. 3 is a schematic structural diagram of a supporting portion and a fixing portion according to an embodiment of the present disclosure;

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

fig. 5 is a schematic structural diagram of a support portion according to an embodiment of the present disclosure;

fig. 6 is a schematic cross-sectional view illustrating a connection between a first optical device and a fixing portion according to an embodiment of the present disclosure.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

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

Referring to fig. 1 and fig. 2, fig. 1 is a schematic partial structural diagram of a laser projection apparatus according to an embodiment of the present disclosure, and fig. 2 is an exploded view of the laser projection apparatus shown in fig. 1. The laser projection apparatus 000 may include: a housing 100, an adjustment assembly 200, and a plurality of optics 300.

The adjustment assembly 200 and the plurality of optics 300 may each be located within the housing 100 in the laser projection device 000.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a supporting portion and a fixing portion according to an embodiment of the present disclosure. The adjustment assembly 200 in the laser projection device 000 may include: the supporting portion 201 may be fixed in the housing 100, and the supporting portion 201 may have a supporting surface 2011 for supporting the fixing portion 202, and a chute 2012 located on the supporting surface 2011. To clearly see the structure of the fixing portion 202, please refer to fig. 4, and fig. 4 is a schematic structural diagram of a fixing portion according to an embodiment of the present application. The fixing portion 202 may be fixedly connected to the first optical device 301, and a side of the fixing portion 202 facing the supporting portion 201 has a slider 2021, and the slider 2021 may be located in the sliding groove 2012. The first optical device 301 may be any one of the plurality of optical devices 300.

Wherein the slider 2021 on the fixing portion 202 may be configured to: sliding in the sliding slot 2012 of the supporting portion 201, the fixing portion 202 drives the first optical device 301 to move on the supporting portion 201 along a target direction (e.g., an X-axis direction in the figure) so as to adjust a distance between the first optical device 301 and the second optical device 302. The second optical device 302 may be an optical device adjacent to the first optical device 301 among the plurality of optical devices 300.

In the present application, the target direction may be an arrangement direction of the first optical device and the second optical device, and for convenience of subsequent description, the number of the target direction is hereinafter defined as X. For example, the fixing portion 202 may drive the first optical device 301 to move on the supporting portion 201 along the target direction X toward the second optical device 302 or drive the first optical device 301 to move on the supporting portion 201 along the target direction X away from the second optical device 302.

For example, after the adjustment assembly 200 and the plurality of optical devices 300 are assembled into the housing 100 of the laser projection apparatus 000, if there is a difference between the installation distance between the first optical device 301 and the second optical device 302 connected to the adjustment assembly 200 and the preset distance. Then, an operator can adjust the relative position between the fixing portion 202 and the supporting portion 201 in the adjusting assembly 200 according to the difference between the installation distance and the preset distance, and the fixing portion 202 can drive the first optical device 301 to move on the supporting portion 302 along the target direction X by the sliding of the slider 2021 in the sliding groove 2012, so as to adjust the distance between the first optical device 301 and the second optical device 302 until the distance between the first optical device 301 and the second optical device 302 is the preset distance. In this way, even if the actual assembly positions of the first optical device 301 and the second optical device 302 are deviated from the theoretical assembly positions, the adjustment assembly 200 can effectively reduce the probability that the actual assembly positions of the first optical device 301 and the second optical device 302 are deviated from the theoretical assembly positions.

In addition, the laser projection apparatus 000 in the embodiment of the present application may include: light source subassembly, ray apparatus subassembly and camera lens. The plurality of optics 300 in the laser projection apparatus 000 may be integrated within at least one of the light source assembly, the opto-mechanical assembly, and the lens. After the adjusting assembly 200 adjusts the distance between the first optical device 301 and the second optical device 302 of the optical devices 300, the laser beams emitted by the laser in the light source assembly pass through the optical devices, and the projected projection image has a good display effect.

To sum up, the embodiment of the present application provides a laser projection apparatus, which includes: a housing, a conditioning assembly, and a plurality of optics. The adjusting assembly and the optical devices can be located in the shell, and the fixing portion in the adjusting assembly is adjusted to move on the supporting portion along the arrangement direction of the first optical device and the second optical device so as to drive the first optical device to move on the supporting portion, and further the distance between the first optical device and the second optical device is adjusted to meet actual requirements. Therefore, even if the actual assembly positions of the first optical device and the second optical device are deviated from the theoretical assembly positions, the probability that the actual assembly positions of the first optical device and the second optical device are deviated from the theoretical assembly positions can be effectively reduced through the adjusting assembly. In addition, after laser beams emitted by a laser in a light source component of the laser projection equipment pass through each optical device, the display effect of projected images is good.

In the embodiment of the present application, please refer to fig. 5, and fig. 5 is a schematic structural diagram of a supporting portion provided in the embodiment of the present application. The supporting surface 2011 on the supporting portion 201 may be a first arc surface, and an included angle α between the length direction of the sliding groove 2012 in the supporting portion 201 and the target direction X may be an acute angle. Wherein the fixing portion 202 in the adjustment assembly 200 may be configured to: the optical axis of the first optical device 301 rotates on the supporting surface 2011, so that the slider 2021 slides in the sliding groove 2012 to move the first optical device 301 on the supporting portion 201 along the target direction X. In this case, since the supporting surface 2011 of the supporting portion 201 is a curved surface, an included angle α between the length direction of the sliding groove 2012 and the target direction X is an acute angle. Therefore, when the slider 2021 on the fixing portion 202 moves within the chute 2012, the fixing portion 202 moves on the supporting portion 201 in the target direction while rotating around the optical axis of the first optical device 301 to achieve adjustment of the distance between the first optical device 301 and the second optical device 302. In another implementation manner, the supporting surface 2011 on the supporting portion 201 may also be a plane, a sliding groove 2012 is formed on the plane, the length direction of the sliding groove 2012 is parallel to the target direction X, and when the slider 2021 on the fixing portion 202 moves in the sliding groove 2012, the distance between the first optical device 301 and the second optical device 302 is adjusted.

Optionally, an included angle α between the length direction of the sliding groove 2012 on the supporting portion 201 of the adjusting assembly 200 and the target direction X may range from 60 degrees to 85 degrees, and for example, the included angle α between the length direction of the sliding groove 2012 and the target direction X may be 70 degrees, which is not specifically limited in this embodiment of the application.

In the embodiment of the present application, as shown in fig. 4, the fixing portion 202 in the adjusting assembly 200 may have a second arc surface 2022 contacting with the supporting surface 2011 on the supporting portion 201. The slider 2021 on the side of the fixing portion 202 facing the supporting portion 201 may be located on the second arc surface 2022. In this case, the distance between the first optical device 301 and the second optical device 302 can be precisely adjusted by the sliding fit of the first arc surface on the supporting portion 201 and the second arc surface 2022 on the fixing portion 202.

Optionally, both the first arc surface in the supporting portion 201 and the second arc surface 2022 on the fixing portion 202 may be arc surfaces, and a center of the arc surface may be located on an optical axis of the first optical device 301. In this case, the first arc surface on the supporting portion 201 and the second arc surface 2022 on the fixing portion 202 are both arc surfaces, and the center of the arc surfaces is on the optical axis of the first optical device 301. Therefore, during the rotation of the second cambered surface 2022 on the fixing portion 202 relative to the first cambered surface on the supporting portion 201, the distance between the first optical device 301 and the second optical device 302 can be adjusted while ensuring that the position of the optical axis of the first optical device 301 remains unchanged. In other realizable manners, the first arc surface on the supporting portion 201 and the second arc surface 2022 on the fixing portion 202 may also be arc surfaces with other shapes, and this embodiment of the present application is not limited in particular.

In this embodiment, as shown in fig. 4 and 5, the number of the sliding grooves 2012 on the supporting portion 201 may be multiple, the arrangement direction of the multiple sliding grooves 2012 may be perpendicular to the arrangement direction of the first optical device 301 and the second optical device 302, and the length directions of the sliding grooves 2012 may be parallel. When the number of the sliding grooves 2012 is plural, the number of the sliding blocks 2021 on the fixing portion 202 may also be plural, and the arrangement direction of the plurality of sliding blocks 2021 may be perpendicular to the arrangement direction of the first optical device 301 and the second optical device 302. The sliding grooves 2012 and the sliding blocks 2021 may be in one-to-one correspondence, and each sliding block 2021 of the sliding blocks 2021 may be located in the corresponding sliding groove 2012. In this case, the plurality of parallel slide grooves 2012 ensure smooth sliding of the sliders 2021 corresponding to the plurality of slide grooves 2012 one by one in the slide grooves 2012.

For example, as shown in fig. 4 and 5, the number of the chutes 2012 may be two, the arrangement direction of the two chutes 2012 may be perpendicular to the arrangement direction of the first optical device 301 and the second optical device 302, and the two chutes 2012 are axisymmetric with respect to the arrangement direction of the first optical device 301 and the second optical device 302. When the number of the slide grooves 2012 can be two, the number of the slide blocks 2021 can also be two. The arrangement direction of the two sliders 2021 may also be perpendicular to the arrangement direction of the first optical device 301 and the second optical device 302, and the two sliders 2021 are axisymmetric with respect to the arrangement direction of the first optical device 301 and the second optical device 302. The two sliding grooves 2012 and the two sliding blocks 2021 may correspond to each other, one sliding block 2021 of the two sliding blocks 2021 may be located in one sliding groove 2012 of the two sliding grooves 2012, and the other sliding block 2021 of the two sliding blocks 2021 may be located in the other sliding groove 2012 of the two sliding grooves 2012. In this case, when the two sliders 2021 on the fixing portion 202 are respectively located in the two sliding grooves 2012 on the supporting portion 201 and slide in the sliding grooves 2012, it can be ensured that the sliding strokes of the two sliders 2021 in the corresponding sliding grooves 2012 are the same. It should be noted that, in the embodiment of the present application, the number of the sliding grooves 2012 and the sliding blocks 2021 is not specifically limited.

Alternatively, as shown in fig. 4 and 5, the slider 2021 on the fixing portion 202 may be in a circular truncated cone shape, and an area of an end surface of the slider 2021 close to the fixing portion 202 is larger than an area of an end surface of the slider 2021 away from the fixing portion 202. The shape of the slide slot 2012 on the support 201 may match the shape of the slide 2021. That is, when the slider 2021 has a circular truncated cone shape, the cross section of the chute 2012 may have a circular truncated cone shape, and the area of the bottom surface a1 of the chute 2012 may be smaller than the area of the opening a2 of the chute 2012. In this case, the shape of the slide groove 2012 matches the shape of the slide block 2021, and the slide block 2021 has a circular truncated cone shape. Therefore, the side wall of the sliding groove 2012 has a guiding function, so that the sliding block 2021 can be conveniently installed in the sliding groove 2012. And the slider 2021 can smoothly slide in the sliding groove 2012, which facilitates the adjustment of the distance between the first optical device 301 and the second optical device 302.

In the embodiment of the present application, as shown in fig. 4 and 5, the adjusting assembly 200 may further include: the handle 203, the handle 203 can be fixedly connected with the side of the fixing part 202 away from the supporting part 201. Thus, an operator can rotate the handle 203, and the handle 203 can drive the slider 2021 on the fixing portion 202 to slide in the sliding groove 2012 on the supporting portion 201, so as to adjust the distance between the first optical device 301 and the second optical device 302. In the present application, the handle 203 may be made separately from the fixing portion 202, and then the handle 203 is fixedly installed on a side of the fixing portion 202 away from the supporting portion 201. The handle 203 may be formed integrally with the fixing portion 202, which is not particularly limited in the embodiment of the present application.

Optionally, the adjusting assembly 200 in the laser projection apparatus 000 may further include: a fastener (not shown) between the supporting portion 201 and the fixing portion 202. The fastener may be configured to: after the distance adjustment between the first optical device 301 and the second optical device 302 is completed, the supporting portion 201 and the fixing portion 202 in the adjustment assembly 200 are fixed. For example, the fastener may be a fastening screw or a snap, which is not limited in the embodiments of the present application.

In the embodiment of the present application, please refer to fig. 6, and fig. 6 is a schematic cross-sectional view illustrating a connection between a first optical device and a fixing portion according to the embodiment of the present application. The first optical device 301 in the laser projection apparatus 000 may be a lens group, and the lens group may include two spherical lenses, and the lens group may be fixed in the fixing portion 202 by means of dispensing. Second optic 302 may be a fluorescent wheel that may be secured within housing 100 in laser projection device 000. For example, the fluorescent wheel may be fixed in the housing 100 by screws, or may be fixed in the housing 100 by other manners, as long as the focus of the light beam converged by the lens group is adjusted to the fluorescent surface of the fluorescent wheel, which is not specifically limited in the embodiment of the present application. In this application, the lens group may be configured to converge the laser beam guided to the lens group by another optical device, and the fixing portion 202 in the adjustment assembly 200 may drive the lens group to move on the supporting portion 201 along the target direction X, that is, the arrangement direction of the lens group and the fluorescent wheel, so as to adjust the focus of the laser beam converged by the lens group onto the fluorescent surface of the fluorescent wheel. The fluorescent wheel may be used to transmit and color change the incident laser beam.

In this case, when the focal point of the laser beam converged by the lens group is on the phosphor surface of the phosphor wheel, the phosphor layer on the phosphor surface can be excited to the maximum. In this manner, the laser beam can be made of a high quality color by the adjustment assembly 200. After, laser beam passes through ray apparatus subassembly and camera lens and projects the back on the projection screen, can effectual improvement laser projection equipment's the effect of projection picture, and then can increase user's experience and feel.

For example, when a light source module in a laser projection apparatus emits a blue laser beam, the lens group converges the blue laser beam. Wherein, a part of blue laser beam contacts with the fluorescent surface of the fluorescent wheel and reflects red light and green light under the action of the fluorescent surface; and then, the red laser, the green laser and the blue laser are combined and then guided to the optical-mechanical assembly, the optical-mechanical assembly is used for modulating the laser beam after the light combination, and a lens in the laser projection equipment is used for projecting a picture based on the laser beam modulated by the optical-mechanical assembly.

In this 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 intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims

1. A laser projection device, comprising: a housing, and an adjustment assembly and a plurality of optics positioned within the housing;

2. The laser projection device of claim 1, wherein the supporting surface is a first arc surface, and an included angle between a length direction of the sliding chute and the target direction is an acute angle;

wherein the fixing portion is configured to: and the sliding block slides in the sliding groove to drive the first optical device to move on the supporting part along the target direction.

3. The laser projection device of claim 2, wherein the fixing portion has a second arc surface that contacts the supporting surface, and the slider is located on the second arc surface.

4. The laser projection device of claim 3, wherein the first arc surface and the second arc surface are both arc surfaces, and a center of the arc surfaces is located on an optical axis of the first optical device.

5. The laser projection device of claim 2, wherein an angle between a length direction of the chute and the target direction is in a range of 60 degrees to 85 degrees.

6. The laser projection device according to any one of claims 1 to 5, wherein the number of the sliding grooves is plural, the arrangement direction of the plural sliding grooves is perpendicular to the target direction, and the length directions of the sliding grooves are parallel;

the number of the sliding blocks is multiple, and the arrangement direction of the sliding blocks is perpendicular to the target direction;

the sliding grooves are in one-to-one correspondence with the sliding blocks, and each sliding block is located in the corresponding sliding groove.

7. The laser projection device according to any one of claims 1 to 5, wherein the slider is shaped like a circular truncated cone, and an area of an end surface of the slider near the fixing portion is larger than an area of an end surface of the slider away from the fixing portion;

the shape of the sliding chute is matched with that of the sliding block, and the area of the bottom surface of the sliding chute is smaller than that of the opening of the sliding chute.

8. The laser projection device of any of claims 1 to 5, wherein the adjustment assembly further comprises: and the handle is fixedly connected with one side of the fixing part, which deviates from the supporting part.

9. The laser projection device of any of claims 1 to 5, wherein the adjustment assembly further comprises: a fastener located between the support portion and the fixation portion, the fastener configured to: after the distance between the first optical device and the second optical device is adjusted, the supporting part and the fixing part are fixed.

10. The laser projection device of any of claims 1 to 5, wherein the first optic is a lens group and the second optic is a phosphor wheel, the phosphor wheel being fixed within the housing.