WO2021190458A1

WO2021190458A1 - Projector device

Info

Publication number: WO2021190458A1
Application number: PCT/CN2021/082138
Authority: WO
Inventors: 杨长明; 李建军; 黄永达
Original assignee: 青岛海信激光显示股份有限公司
Priority date: 2020-03-23
Filing date: 2021-03-22
Publication date: 2021-09-30
Also published as: CN115315659A; CN112817205A; CN112817205B

Abstract

A projector device, comprising: an light source system (1), the light source system (1) being used for emitting a light beam; an optical machine system (2), the optical machine system (2) being located at the light exiting side of the light source system (1), and the optical machine system (2) being used for receiving the light beam, modulating same, and emitting the modulated light beam; and a lens (3), the lens (3) comprising a first moving assembly (31) and a lens barrel (32). The first moving assembly (31) comprises a first movable abutment housing (311) and a first control assembly (312); the first movable abutment housing (311) is slidably connected to the light exiting side of the optical machine system (2); the first control assembly (312) is fixed at the light exiting side of the optical machine system (2), and is transmittingly connected to the first movable abutment housing (311); the lens barrel (32) is connected to the first movable abutment housing (311); and the first movable abutment housing (311) is provided with a first light transmitting hole.

Description

Projection host

Cross-references to related applications

This application requires that the application number submitted to the Chinese Patent Office on March 23, 2020 is 202010206877.1, the title of the invention is "Projection Host", and the application number submitted to the China Patent Office on March 23, 2020 is 202010207094.5, and the title of the invention is "Projection The priority of the Chinese patent application of "Host", the entire content of which is incorporated into the embodiments of this application by reference.

Technical field

The embodiments of the present application relate to the field of projection technology, and in particular to a projection host.

Background technique

With the continuous development of science and technology, more and more projectors are used in people's work and life. At present, the projection host mainly includes a light source system, an optomechanical system and a lens. The light source system is used to emit light beams, and the optomechanical system is used to process the light beams emitted by the light source system, and emit the processed light beams to the lens, and the lens is used to receive The processed light beam emitted by the optomechanical system is imaged in the projection area. In the process of using the projection host, different use environments have different requirements for the projection area of the lens, so it is necessary to adjust the projection area of the lens.

In the related art, the lens includes a lens barrel holder, a lens barrel, and an adjusting component. The first side of the lens barrel holder is fixedly connected with the lens barrel, and the second side of the lens barrel holder is fastened to the light exit side of the optical mechanical system through the adjusting component. Among them, the adjustment component mainly includes an adjustment screw. In this way, by tightening or loosening the adjustment screw, the movement of the lens barrel holder is controlled, and then the lens barrel is driven to move to realize the adjustment of the projection area of the lens. However, tightening or loosening the adjustment screw is susceptible to subjective factors, so the movement accuracy of the lens barrel cannot be guaranteed, and the projection area of the lens cannot be controlled to the best effect, which affects the projection effect of the projection host.

Summary of the invention

The embodiment of the present application provides a projection host, which can solve the problem of errors in the adjustment of the projection area by the projection host. The technical solutions are as follows:

A projection host, the projection host includes:

Light source system, which is used to emit light beams;

An optomechanical system, the optomechanical system is located on the light exit side of the light source system, and is used to receive the light beam and emit the modulated light beam after modulation; a lens, the lens including a first moving component and a lens barrel;

The first moving component includes a first moving bearing housing and a first control component. The first moving bearing housing is slidably connected to the light emitting side of the optical machine system, and the first control component is fixed on the light emitting side of the optical machine system. And it is connected in transmission with the first moving bearing housing, and the first control component is used to receive a first control instruction to drive the first moving bearing housing to move in the first direction; the lens barrel is connected to the first moving bearing housing The first movable bearing housing has a first light transmission hole, and the lens barrel is used for receiving and imaging the modulated light beam passing through the first light transmission hole.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the embodiments of the present application. For example, for those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

FIG. 1 is a schematic structural diagram of a projection host according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an exploded structure of a lens according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an exploded structure of another lens according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a first mobile component provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of a connector provided by an embodiment of the present application;

Fig. 6 is a schematic structural diagram of another first mobile component provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of an exploded structure of another lens according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a second mobile component provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of yet another first mobile component provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of another second mobile component provided by an embodiment of the present application;

FIG. 11 is a schematic diagram of an initial position structure of a lens provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a lens after moving in a first direction according to an embodiment of the present application; FIG.

FIG. 13 is a schematic structural diagram of a lens after moving in a second direction according to an embodiment of the present application; FIG.

FIG. 14 is a schematic structural diagram of a lens provided by an embodiment of the present application after moving in a first direction and a second direction.

Reference signs:

1: Light source system; 2: Opto-mechanical system; 3: Lens; 4: Radiator;

31: first moving component; 32: lens barrel; 33: second moving component; 34: connecting piece;

311: the first moving bearing housing; 312: the first control component; 313: the first moving guide rod;

3111: the first oblong hole; 3112: the first fixing member; 3113: the first lubricating member; 3114: the third boss; 3115: the third groove;

3121: the first motor; 3122: the first rotating member; 3123: the first adjusting screw; 3124: the first elastic member;

331: the second moving bearing housing; 332: the second control component; 333: the second moving guide rod;

3311: the second oblong hole; 3312: the second fixing member; 3313: the second collar; 3314: the second lubricating member;

3321: the second motor; 3322: the second rotating member; 3323: the second adjusting screw; 3324: the second elastic member;

341: the first boss; 342: the first groove; 343: the first fixing bracket; 344: the first limiting groove.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

FIG. 1 illustrates a schematic structural diagram of a projection host according to an embodiment of the present application, and FIG. 2 illustrates a schematic side view exploded structure diagram of a lens according to an embodiment of the present application. As shown in Figure 1 and Figure 2, the projection host includes: a light source system 1, which is used to emit light beams; an optical machine system 2, which is located on the light emitting side of light source system 1, and optical machine system 2 is used to receive light beams And after modulation, it emits a modulated light beam; lens 3, lens 3 includes a first moving component 31 and a lens barrel 32; the first moving component 31 includes a first moving bearing housing 311 and a first control component 312, the first moving bearing The housing 311 is slidably connected to the light-exit side of the optical-mechanical system 2, and the first control component 312 is fixed on the light-exit side of the optical-mechanical system 2, and is connected to the first movable bearing housing 311 in transmission. The first control component 312 is used for After receiving the first control command to drive the first moving bearing housing 311 to move in the first direction; the lens barrel 32 is connected to the first moving bearing housing 311, and the first moving bearing housing 311 has a first light transmission The lens barrel 32 is used to receive the modulated light beam passing through the first light-transmitting hole and perform imaging.

In the embodiment of the present application, since the first control component 312 can receive the first control instruction to drive the first moving bearing housing 311 to move in the first direction, the automatic control of the movement of the first moving bearing housing 311 can be realized. , In order to ensure the movement amount and movement accuracy of the first moving bearing housing 311, thereby ensuring the movement amount and movement accuracy of the lens barrel 32. At the same time, since the lens barrel 32 can receive the modulated light beam emitted by the optical machine system 2 and perform imaging, the projection area of the lens 3 can be accurately controlled, thereby improving the projection effect of the projection host.

Optionally, the projection host is an ultra-short throw projection host, and the projection host is a laser projection host. Of course, in other embodiments, the projection host is a short-focus projection host or a long-focus projection host.

In the embodiment of the present application, as shown in Fig. 1, in addition to the light source system 1, the optomechanical system 2, and the lens 3, the projection host also includes a radiator 4. The radiator 4 is connected to the optomechanical system 2, and the radiator 4 is used for The optical machine system 2 is dissipated.

Optionally, the light source system 1 is a three-primary color light source system, and the optomechanical system 2 includes an optomechanical housing, a DMD (Digital Micromirror Device), a lens assembly and a prism assembly, and the light source system 1 is connected to the optomechanical housing The lens 3 is connected to the second open end of the optical engine housing, the DMD, lens assembly and prism assembly are fixed in the optical engine housing, and the light beam emitted by the light source system 1 enters through the first opening of the first open end To the prism component, the prism component is then emitted to the prism component. The light beam emitted by the prism component is modulated by the DMD and then emits a modulated light beam, and then exits to the lens 3 through the second opening at the second opening end.

Of course, the light source system 1 may also be a single-primary color light source system, and the optical-mechanical system 2 may also be other structures including a fluorescent wheel, which is not limited in the embodiment of the present application.

In the embodiment of the present application, as shown in FIG. 2, the first movable bearing housing 311 and the first control component 312 are directly connected to the light-emitting side of the optical-mechanical system 2, that is, combined with the above-mentioned optical-mechanical system 2. Both the first moving bearing housing 311 and the first control component 312 are directly connected to the second open end of the optical machine housing; of course, in other embodiments, the first moving bearing housing 311 and the first control component 312 are indirectly connected to the light-emitting side of the optical machine system 2, that is, combined with the structure of the above-mentioned optical machine system 2. The first moving bearing housing 311 and the first control component 312 are both indirectly connected to the second Open end.

For example, as shown in FIG. 3, the lens 3 further includes a connecting piece 34, which is fixedly connected to the light emitting side of the optical machine system 2, and the first movable bearing housing 311 is slidably connected to the connecting piece 34. A control component 312 is fixed on the connecting piece 34. The connecting piece 34 has a third light-transmitting hole through which the modulated light beam emitted by the optical mechanical system 2 can pass. In this way, the weight of the first moving bearing housing 311 and the first control assembly 312 is carried by the connecting piece 34, which avoids the opto-mechanical housing of the optical engine system 2 in the first moving bearing housing 311 and the first control assembly 312. The possibility of deformation occurs under the action of gravity, thereby avoiding the possibility of loose connection of the optical devices in the optical machine housing, and prolonging the life of the optical machine system 2.

The connecting member 34 is a rectangular flange structure. Of course, the connecting member 34 may also have other structures, which is not limited in the embodiment of the present application. The connecting piece 34 is fixed to the light-emitting side of the optical machine system 2 by a plurality of fixing screws, that is, combined with the above-mentioned structure of the optical machine system 2, and the connecting piece 34 is fixed to the second opening end of the optical machine housing by a plurality of fixing screws. Of course, the connecting member 34 can also be fixed to the second open end of the optical engine housing in other ways.

Next, the structure of the first movable bearing housing 311 and the structure of the first control assembly 312 will be introduced.

In the embodiment of the present application, the first movable supporting housing 311 has a rectangular structure. Of course, the first movable supporting housing 311 may also have a circular structure, which is not limited in the embodiment of the present application.

Wherein, in order to realize the slidability of the first moving bearing housing 311, taking the lens 3 including the connecting member 34 as an example, in some embodiments, as shown in FIG. 4, the first moving component 31 further includes a plurality of first moving parts. The guide rod 313, a plurality of first movable guide rods 313 are fixed on the connecting member 34 in parallel, and the first movable bearing housing 311 is slidably sleeved on the plurality of first movable guide rods 313.

In this way, the plurality of first moving guide rods 313 restricts that the first moving bearing housing 311 can only slide along the length of the first moving guide rod 313, thereby preventing the first moving bearing housing 311 from sliding during the sliding process. Shaking in other directions.

Optionally, as shown in FIG. 5, a side of the connecting member 34 away from the optical-mechanical system 2 has a plurality of pairs of first bosses 341, and the plurality of pairs of first bosses 341 correspond to the plurality of first moving guide rods 313 one-to-one. Each first boss 341 has a first groove 342 at one end away from the connecting member 34, and both ends of each first moving guide rod 313 are respectively fixed to the first grooves on the corresponding pair of first bosses 341.内槽342。 Slot 342. In this way, the end of the first moving guide rod 313 is pressed and fixed in the first groove 342, so that the installation accuracy of the first moving guide rod 313 can be ensured, and the first moving bearing housing 311 can be ensured along the first groove. The accuracy of the movement direction of the guide rod.

Wherein, the end of the first moving guide rod 313 is welded in the first groove 342 on the first boss 341. Of course, the first boss 341 can be processed with a threaded hole penetrating the first groove 342, so that the end of the first moving guide rod 313 can be compressed in the first groove 342 by a compression screw. Of course, the end of the first moving guide rod 313 can also be fixed in the first groove 342 in other ways, which is not limited in the embodiment of the present application.

Optionally, a plurality of first moving guide rods 313 can slidably pass through a pair of side walls of the first moving bearing housing 311, so as to ensure that the first moving bearing housing 311 is on the first moving guide rod 313. Sliding. Or, the side of the first moving bearing housing 311 has multiple sets of first collars, the multiple sets of first collars correspond to the multiple first moving guide rods 313 one-to-one, and each set of first collars is sleeved in the corresponding On the first moving guide rod 313, the first moving bearing housing 311 is slidable along the first moving guide rod 313.

It should be noted that when the lens 3 does not include the connecting member 34, that is, when the first moving bearing housing 311 is directly connected to the second opening end of the optical machine housing, the plurality of first moving guide rods 313 are parallel to each other的 is fixed to the second open end of the optical engine housing.

In other embodiments, as shown in FIG. 6, the first movable bearing housing 311 has a plurality of first oblong holes 3111 and a plurality of first fixing members 3112 corresponding to the plurality of first oblong holes 3111 one-to-one; The length directions of the plurality of first oblong holes 3111 are all parallel, and each first fixing member 3112 passes through the corresponding first oblong hole 3111 and is fixedly connected to the connecting member 34.

In this way, under the restriction of the plurality of first oblong holes 3111, the first movable bearing housing 311 is restricted to slide along the length of the first oblong hole 3111, thereby avoiding the sliding process of the first movable bearing housing 311. Shaking in other directions in the middle.

Wherein, in order to facilitate the sliding of the first moving bearing housing 311, the connecting member 34 has a first protrusion at a position corresponding to the first oblong hole 3111, so as to pass through a plurality of first protrusions corresponding to the plurality of first oblong holes 3111. The block supports the first movable bearing housing 311, so that the external force received by the first movable bearing housing 311 only needs to overcome the frictional force with the plurality of first protrusions.

Among them, the first fixing member 3112 is a fixing member that fixes the first movable bearing housing 311 along its own axial direction, and does not interfere with the movement of the first movable bearing housing 311 along the length direction of the first oblong hole 3111. The first fixing member 3112 may be a screw, of course, it may also be another type of fixing member, which is not limited in the embodiment of the present application. Illustratively, the first fixing member 3112 is a shoulder screw.

Wherein, the number of the first fixing member 3112 may be two or more than two, so as to make the first movable bearing housing 311 more stably supported on the connecting member 34.

For example, when the number of the first oblong holes 3111 is two, the length directions of the two first oblong holes 3111 do not overlap, and the two first oblong holes 3111 are located in the two pairs of the first movable bearing housing 311. At the corner, the diagonal line formed by the two first oblong holes 3111 realizes the stable support of the connecting member 34 to the first movable bearing housing 311. When the number of the first oblong holes 3111 is three, the three first oblong holes 3111 are the three vertices of the triangle, and then the surface formed by the three first oblong holes 3111 realizes the connection of the connecting member 34 to the first movable bearing. Rely on the stable support of the housing 311. When the number of the first guide holes is four, the four first guide holes are the four apexes of the rectangle, and the surface formed by the four first oblong holes 3111 realizes the connection of the connecting member 34 to the first movable bearing shell. The stable support of the body 311.

It should be noted that when the lens 3 does not include the connecting member 34, that is, when the first movable bearing housing 311 is directly connected to the second opening end of the optical machine housing, each first fixing member 3112 passes through the corresponding The first oblong hole 3111 is fixedly connected to the second open end of the optical engine housing.

In still other embodiments, the first moving assembly 31 further includes a first moving guide rod 313 and a plurality of first fixing members 3112, and the first moving bearing housing 311 has a one-to-one correspondence with the plurality of first fixing members 3112. A plurality of first oblong holes 3111, the first moving guide rod 313 is fixed on the connecting member 34, the first moving bearing housing 311 is slidably sleeved on the first moving guide rod 313, and the plurality of first oblong holes 3111 The longitudinal direction of the rod is parallel to the longitudinal direction of the first moving guide rod 313, and the first fixing member 3112 passes through the corresponding first oblong hole 3111 and is fixedly connected to the connecting member 34.

The setting of the first moving guide rod 313 and the setting of the first oblong hole 3111 can refer to the above two embodiments, which will not be repeated in the embodiment of the present application.

It should be noted that, for the above two embodiments in which the first movable bearing housing 311 has a first oblong hole 3111, as shown in FIG. 6, at least one side of the first movable bearing housing 311 has a first oblong hole around it. Hole 3111 of the first lubricating member 3113. In this way, when the first fixing member 3112 passes through the corresponding first oblong hole 3111 and is fixed to the connecting member 34, the end of the first fixing member 3112 away from the connecting member 34 is between the first movable bearing housing 311, and/ Or there is a first lubricating member 3113 between the first moving bearing housing 311 and the connecting member 34, and when the first moving bearing housing 311 slides, the first movement can be reduced under the action of the first lubricating member 3113. The frictional resistance of the supporting housing 311 facilitates the smoothness and flexibility of the movement of the first moving supporting housing 311, thereby increasing the movement accuracy of the first moving supporting housing 311.

The first lubricating element 3113 has an oblong hole structure, and the length and the diameter of the first lubricating element 3113 are larger than the length and the diameter of the first oblong hole 3111, so that the first lubricating element 3113 surrounds the first oblong hole 3111. The first lubricating member 3113 can be fixed on the side of the first moving bearing housing 311 by means of bonding, of course, it can also be fixed on the side of the first moving bearing housing 311 in other ways. This is not limited.

Optionally, the material of the first lubricating member 3113 is polytetrafluoroethylene. Polytetrafluoroethylene has a low coefficient of friction and good self-lubricating effect, so it can effectively prevent abrasion, so as to realize the smoothness and flexibility of the sliding movement of the first moving bearing housing 311. Of course, the material of the first lubricating member 3113 may also be other materials, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the first control component 312 is a telescopic structure. At this time, the first control component 312 is fixedly connected to the first moving bearing housing 311, and then controlling the first moving bearing housing 311 by changing its length. Sliding; or the first control component 312 is a rotating structure, at this time the first control component 312 is threadedly connected with the first moving bearing housing 311, and then driving the first moving bearing housing 311 to slide through its own rotation.

When the first control component 312 is a rotating structure, taking the lens 3 including the connecting member 34 as an example, optionally, as shown in FIG. 6, the first control component 312 includes a first motor 3121, a first rotating member 3122, and a first Adjusting screw 3123; the first motor 3121 is fixedly connected to the connecting member 34, the first rotating member 3122 is rotatably limited on the connecting member 34, and the first rotating member 3122 is drivingly connected with the output shaft of the first motor 3121; first adjustment One end of the screw 3123 is fixedly connected with the first rotating member 3122 along the axial direction of the first rotating member 3122, and the other end of the first adjusting screw 3123 is threadedly connected with the first moving bearing housing 311.

In this way, the first motor 3121 receives the first control instruction, and then drives the first rotating member 3122 to rotate synchronously after being started. Since one end of the first adjusting screw 3123 is fixedly connected with the first rotating member 3122 along the axial direction of the first rotating member 3122, when the first rotating member 3122 rotates, the first adjusting screw 3123 can be driven to rotate synchronously. In this way, when the first adjusting screw 3123 rotates, the first moving bearing housing 311 threadedly connected with the first adjusting screw 3123 moves along the length direction of the first adjusting screw 3123, so as to realize the sliding of the first moving bearing housing 311. That is, the adjustment of the lens barrel 32 in the first direction is realized.

Optionally, as shown in FIG. 5, the connecting member 34 has a first fixing bracket 343 and a first limiting slot 344; the first motor 3121 is fixed on the first fixing bracket 343, and the first rotating member 3122 is rotatably supported Inside the first limiting slot 344, and the first limiting slot 344 limits the first rotating member 3122 along the axial direction of the first rotating member 3122. In this way, the first fixing bracket 343 can fix and support the first motor 3121, and the first limiting slot 344 can prevent the first rotating member 3122 from shaking in the axial direction.

Wherein, the axial direction of the output shaft of the first motor 3121 is perpendicular or parallel to the length direction of the first adjusting screw 3123. The first motor 3121 can be fixed on the first fixing bracket 343 by screws, of course, it can also be fixed on the first fixing bracket 343 by other means, which is not limited in the embodiment of the present application. A rotating shaft is provided on the first limiting groove 344, the first rotating member 3122 is fixed on the rotating shaft, and a protrusion and a retaining ring are provided on the rotating shaft to limit the first rotating member 3122 to the protrusion and Between the retaining rings, the axial limit of the first rotating member 3122 is realized. Of course, the first limiting slot 344 can also be provided in other structures, as long as the first rotating member 3122 can be limited, which is not limited in the embodiment of the present application.

Among them, the first motor 3121 is electrically connected to the controller, so that when the first control instruction transmitted by the controller is received, the first motor 3121 is controlled to start at the first time and stop at the second time, thereby ensuring that the first motor The distance that 3121 drives the first moving bearing housing 311 through the first rotating member 3122 and the first adjusting screw 3123 is the set moving distance, which ensures the movement accuracy of the first moving bearing housing 311. The first motor 3121 is a geared motor or other motors, which is not limited in the embodiment of the present application.

Optionally, when the axial direction of the output shaft of the first motor 3121 is perpendicular to the length direction of the first adjusting screw 3123, the first rotating member 3122 is a gear set with a turbine; when the shaft of the output shaft of the first motor 3121 is When it is parallel to the length direction of the first adjusting screw 3123, the first rotating member 3122 is a spur gear set.

For example, when the first rotating member 3122 is a spur gear assembly, the first rotating member 3122 includes a first gear and a second gear, and the first gear and the second gear mesh with each other. The first gear is fixedly connected to the output shaft of the first motor 3121 in the axial direction, the second gear is rotatably limited on the connecting member 34, and the second gear is fixedly connected to one end of the first adjusting screw 3123 in the axial direction. In this way, After the first motor 3121 is started, the first gear is driven to rotate, and then the second gear is driven to rotate synchronously, and then the first adjusting screw 3123 is driven to rotate synchronously. Of course, the first rotating member 3122 can also be a belt drive assembly or other types of drive assemblies, as long as the power output by the first motor 3121 can be transmitted to the first adjusting screw 3123, so that the first adjusting screw 3123 can be rotated in place. The embodiments of this application do not limit this.

Wherein, the length direction of the first adjusting screw 3123 is parallel to the length direction of the first moving guide rod 313 or the length direction of the first oblong hole 3111. Combined with the structure of the first rotating member 3122 described above, the number of the first adjusting screw 3123 is one. Of course, in some other embodiments, the number of the first adjustment screws 3123 is two, and at this time, the screw threads of the two first adjustment screws 3123 are rotated in opposite directions. Continuing the structure of the first rotating member 3122 described above, the first rotating member 3122 also includes a third gear. The rotatable fiber of the third gear is on the connecting member 34 and meshes with the first gear. One end of the other first adjusting screw 3123 It is fixedly connected with the third gear in the axial direction. In this way, the first moving bearing housing 311 is driven to move by the two first adjusting screws 3123, which can further ensure the stability of the movement of the first moving bearing housing 311.

In some embodiments, as shown in FIG. 6, the first control assembly 312 further includes a first elastic member 3124, the first elastic member 3124 is sleeved on the first adjusting screw 3123, and two ends of the first elastic member 3124 are connected to each other. The first rotating member 3122 abuts against the first moving bearing housing 311. In this way, the first elastic member 3124 can buffer the first moving bearing housing 311 when the first moving bearing housing 311 moves, so as to further ensure that the first control component 312 is able to protect the first moving bearing housing 311. The adjustment accuracy avoids the sudden displacement of the first moving bearing housing 311.

In some embodiments, the first moving component 31 further includes a first sensor; the first sensor is fixed on the connecting member 34 and is located in the moving direction of the first moving bearing housing 311, and the first sensor is used to detect The moving distance of the first moving bearing housing 311, and when the moving distance is equal to the first distance threshold, a first control signal is sent to the first control component 312 to control the first moving bearing housing 311 to stop moving.

Wherein, the first distance threshold is a preset maximum distance value that the first movable bearing housing 311 can move. In this way, the moving distance of the first moving bearing housing 311 can be controlled more accurately. Since the first sensor can control the first moving bearing housing 311 to stop in time, it can prevent the first moving bearing housing 311 from moving. Continue to move after reaching the maximum distance, causing the first motor 3121 to burn out and other undesirable consequences.

In addition, the first sensor can also detect the distance between the first moving bearing housing 311 and the first sensor. When the detected distance is less than the second distance threshold, it indicates that the first moving bearing housing 311 may be connected to the first sensor. When the first sensor collides, etc., the first sensor may send a first control signal to the first control component 312 to control the first moving bearing housing 311 to stop moving. The second distance threshold refers to the minimum safe distance between the first moving bearing housing 311 and the first sensor.

Wherein, the connecting member 34 has a second groove, so that the first sensor can be fixed in the second groove. Accordingly, the first movable bearing housing 311 has a second protrusion corresponding to the second groove. In this way, when the second boss extends into the second groove during the movement, the first sensor in the second groove can sense the second boss, so as to detect the moving distance of the second boss , That is, detecting the moving distance of the first moving bearing housing 311. The first sensor may be a distance sensor, such as an infrared sensor or other sensors.

In the embodiment of the present application, as shown in FIG. 2, the lens barrel 32 is directly fixed on the first moving bearing housing 311. At this time, driven by the first moving bearing housing 311, the lens barrel 32 can only move along the first moving bearing housing 311. Moving in one direction means that the projection area of the lens 3 can only be adjusted in the first direction.

Among them, the lens barrel 32 can be fixedly connected to the first movable bearing housing 311 through a variety of connection methods. For example, the lens barrel 32 is fixedly connected to the first movable bearing housing 311 by a fixing screw.

Of course, in order to increase the adjustment range of the projection area, in the embodiment of the present application, as shown in FIG. Control component 332; the second movable bearing housing 331 is slidably connected to the side of the first movable bearing housing 311 away from the optomechanical system 2, and the second control component 332 is fixed on the first movable bearing housing 311 The second control component 332 is used to receive a second control instruction to drive the second moving and supporting housing 331 to move in the second direction; the lens barrel 32 and the second The movable bearing housing 331 is fixedly connected, and the second movable bearing housing 331 has a second light transmission hole, and the lens barrel 32 is used for receiving and imaging the modulated light beam passing through the second light transmission hole.

Wherein, the first direction and the second direction are not parallel. Illustratively, the first direction is perpendicular to the second direction. Optionally, the first direction is a horizontal direction, that is, the first direction is a left-right direction, and the second direction is a vertical direction, that is, the second direction is a vertical direction. The connection manner between the lens barrel 32 and the second movable bearing housing 331 may refer to the connection manner between the lens barrel 32 and the first movable bearing housing 311 described above.

In this way, since the second control component 332 can receive the second control command to drive the second moving bearing housing 331 to move in the second direction, the automatic control of the movement of the second moving bearing housing 331 can be realized to ensure that the second moving bearing housing 331 moves automatically. The movement amount and movement precision of the second movable bearing housing 331 can further ensure the movement amount and movement precision of the lens barrel 32 connected to the second movable bearing housing 331.

Next, the structure of the second movable bearing housing 331 and the structure of the second control assembly 332 will be introduced.

In the embodiment of the present application, the second movable bearing housing 331 has a rectangular structure. Of course, the second movable bearing housing 331 may also have a circular structure, which is not limited in the embodiment of the present application.

Wherein, when the first moving bearing housing 311 and the second moving bearing housing 331 are both rectangular structures, the long side of the second moving bearing housing 331 is smaller than the long side of the first moving bearing housing 311, The short side of the second moving bearing housing 331 is smaller than the short side of the first moving bearing housing 311. In this way, the second moving bearing housing 331 can be embedded in the first moving bearing housing 311 to make the first moving The supporting housing 311 and the second moving supporting housing 331 are more closely matched.

Wherein, in order to realize the slidability of the second moving bearing housing 331, in some embodiments, as shown in FIG. 8, the second moving component 33 further includes a plurality of second moving guide rods 333, The rods 333 are fixed on the first movable supporting shell 311 in parallel to each other, and the second movable supporting shell 331 is slidably sleeved on the plurality of second movable guide rods 333.

In this way, the plurality of second moving guide rods 333 limit that the second moving bearing housing 331 can only slide along the length of the second moving guide rod 333, thereby preventing the second moving bearing housing 331 from sliding during the sliding process. Shaking in other directions.

Optionally, the length direction of the second moving guide rod 333 is perpendicular to the length direction of the first moving guide rod 313 to ensure that the first direction and the second direction are perpendicular. In this way, the position of the lens barrel 32 can be adjusted based on the standard rectangular coordinate system. Of course, the length direction of the second moving guide rod 333 and the length direction of the first moving guide rod 313 may also form a certain angle, which is not limited in the embodiment of the present application.

Optionally, as shown in FIG. 9, the side of the first moving bearing housing 311 away from the connecting member 34 has a plurality of pairs of third bosses 3114, a plurality of pairs of third bosses 3114 and a plurality of second moving guide rods. 333 corresponds to one by one, each third boss 3114 has a third groove 3115 at one end away from the connecting member 34, and both ends of each second moving guide rod 333 are respectively fixed on a corresponding pair of third boss 3114的third groove 3115. In this way, the end of the second moving guide rod 333 is pressed and fixed in the third groove 3115, so as to ensure the installation accuracy of the second moving guide rod 333, thereby ensuring that the second moving bearing housing 331 runs along the second The accuracy of the movement direction of the guide rod.

Wherein, the end of the second moving guide rod 333 is welded in the third groove 3115 on the third boss 3114. Of course, the third boss 3114 can be processed with a threaded hole penetrating the third groove 3115, so that the end of the second moving guide rod 333 can be compressed in the third groove 3115 by a compression screw. Of course, the end of the second moving guide rod 333 can also be fixed in the third groove 3115 in other ways, which is not limited in the embodiment of the present application.

Optionally, a pair of side walls of the second moving bearing housing 331 have inertial perforations, and a plurality of second moving guide rods 333 can slidably pass through the inertial perforations, so as to ensure that the second moving bearing housing 331 is in the second The movable guide rod 333 is slidable. Or, as shown in FIG. 8, the side of the second moving bearing housing 331 has multiple sets of second collars 3313, and the multiple sets of second collars 3313 correspond to the multiple second moving guide rods 333 one-to-one, and each The set of second collar 3313 is sleeved on the corresponding second moving guide rod 333, so as to realize the slidability of the second moving bearing housing 331 along the second moving guide rod 333. Alternatively, the side of the second moving bearing housing 331 close to the first moving bearing housing 311 has a groove corresponding to the first moving guide rod 313 in the thickness direction, and the first moving guide rod 313 may be located in the corresponding concave. It can move along the length direction of the second moving guide rod 333 in the corresponding groove. Wherein, the slidability of the second movable bearing housing 331 can be ensured by at least one of the above three methods, which is not limited in the embodiment of the present application.

In other embodiments, as shown in FIG. 10, the second movable bearing housing 331 has a plurality of second oblong holes 3311 and a plurality of second fixing members 3312 corresponding to the plurality of second oblong holes 3311 one-to-one; The length directions of the plurality of second oblong holes 3311 are all parallel, and each second fixing member 3312 passes through the corresponding second oblong hole 3311 and is fixedly connected to the connecting member 34.

In this way, under the restriction of the plurality of second oblong holes 3311, the second movable bearing housing 331 is limited to slide along the length of the second oblong hole 3311, thereby avoiding the sliding process of the second movable bearing housing 331. Shaking in other directions in the middle.

Wherein, in order to facilitate the sliding of the second moving bearing housing 331, the connecting member 34 has a second protrusion at a position corresponding to the second oblong hole 3311, so as to pass through the plurality of second protrusions corresponding to the plurality of second oblong holes 3311. The block supports the second movable bearing housing 331, so that the external force received by the second movable bearing housing 331 only needs to overcome the frictional force with the plurality of second protrusions.

Among them, the second fixing member 3312 is a fixing member that fixes the second movable bearing housing 331 along its own axial direction, and does not interfere with the movement of the second movable bearing housing 331 along the length direction of the second oblong hole 3311. The second fixing member 3312 may be a screw, of course, it may also be another type of fixing member, which is not limited in the embodiment of the present application. Illustratively, the second fixing member 3312 is a shoulder screw.

Wherein, the number of the second fixing member 3312 may be two or more than two, so as to make the second movable bearing housing 331 more stably supported on the connecting member 34.

For example, when the number of the second oblong holes 3311 is two, the length directions of the two second oblong holes 3311 do not overlap, and the two second oblong holes 3311 are located in two pairs of the second movable bearing housing 331. At the corner, the diagonal line formed by the two second oblong holes 3311 realizes the stable support of the first movable supporting housing 311 to the second movable supporting housing 331. When the number of the second oblong holes 3311 is three, the three second oblong holes 3311 are the three vertices of the triangle, and the surface formed by the three second oblong holes 3311 realizes the first movable bearing housing The 311 supports the second moving bearing housing 331 stably. When the number of the second guide holes is four, the four second guide holes can form the four vertices of the rectangle, and the surface formed by the four second oblong holes 3311 realizes the pair of the first movable bearing housing 311 The second movement bears the stable support of the housing 331.

In still other embodiments, the second moving assembly 33 further includes a second moving guide 333 and a plurality of second fixing members 3312, and the second moving bearing housing 331 has a one-to-one correspondence with the plurality of second fixing members 3312. A plurality of second oblong holes 3311; the second movable guide rod 333 is fixed on the first movable supporting housing 311, the second movable supporting housing 331 is slidably sleeved on the second movable guide rod 333, and a plurality of The length direction of the second oblong hole 3311 is parallel to the length direction of the second moving guide rod 333, and the second fixing member 3312 passes through the corresponding second oblong hole 3311 and is fixedly connected to the first moving bearing housing 311.

Wherein, the setting of the second moving guide rod 333 and the setting of the second oblong hole 3311 can refer to the above two embodiments, which will not be repeated in the embodiment of the present application.

It should be noted that for the above two embodiments in which the second movable bearing housing 331 has the second oblong hole 3311, as shown in FIG. 10, at least one side of the second movable bearing housing 331 has a surrounding second The second lubricating member 3314 of the oblong hole 3311. In this way, when the second fixing member 3312 passes through the corresponding second oblong hole 3311 and is fixed to the connecting member 34, between the end of the second fixing member 3312 away from the connecting member 34 and the second movable bearing housing 331, and/ Or there is a second lubricating member 3314 between the second moving bearing housing 331 and the first moving bearing housing 311, and when the second moving bearing housing 331 slides, it can be under the action of the second lubricating member 3314 Reducing the frictional resistance of the second moving bearing housing 331 facilitates enhancing the smoothness and flexibility of the movement of the second moving bearing housing 331, thereby increasing the movement accuracy of the second moving bearing housing 331.

The second lubricating element 3314 has an oblong hole structure, and the length and the diameter of the second lubricating element 3314 are larger than the length and the diameter of the second oblong hole 3311, so that the second lubricating element 3314 surrounds the second oblong hole 3311. The second lubricating member 3314 can be fixed to the side of the second movable bearing housing 331 by bonding, of course, the second lubricating member 3314 can also be fixed to the side of the second moving bearing housing 331 in other ways. This embodiment of the application does not limit this.

Optionally, the material of the second lubricating member 3314 is polytetrafluoroethylene. Polytetrafluoroethylene has a low coefficient of friction and good self-lubricating effect, so it can effectively prevent abrasion, so as to realize the smoothness and flexibility of the sliding movement of the second moving bearing housing 331. Of course, the material of the second lubricating member 3314 may also be other materials, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the structure of the second control component 332 is the same as or similar to the structure of the first control component 312. For example, the second control component 332 is a rotating structure. At this time, as shown in FIG. 8 or FIG. The control assembly 332 includes a second motor 3321, a second rotating part 3322, and a second adjusting screw 3323; the second motor 3321 is fixedly connected to the first moving bearing housing 311, and the second rotating part 3322 is rotatably limited in the first Moving and bearing on the housing 311, the second rotating member 3322 is drivingly connected to the output shaft of the second motor 3321; one end of the second adjusting screw 3323 is fixedly connected to the second rotating member 3322 along the axial direction of the second rotating member 3322. The other end of the two adjusting screws 3323 is threadedly connected with the second moving bearing housing 331.

In this way, the second motor 3321 can receive the second control instruction, and then drive the second rotating member 3322 to rotate synchronously after being started. Since one end of the second adjusting screw 3323 is fixedly connected to the second rotating member 3322 along the axial direction of the second rotating member 3322, when the second rotating member 3322 rotates, the second adjusting screw 3323 can be driven to rotate synchronously. In this way, when the second adjusting screw 3323 rotates, the second moving bearing housing 331 threadedly connected with the second adjusting screw 3323 moves along the length direction of the second adjusting screw 3323, so as to realize the sliding of the second moving bearing housing 331. That is, the adjustment of the lens barrel 32 in the second direction is realized.

Among them, the fixing method of the second motor 3321, the second rotating member 3322, the structure of the second rotating member 3322, and the number of the second adjusting screws 3323 are the same as those of the first motor 3121 and the first rotating member 3122 described in the above embodiment. The number of fixing methods, the structure of the first rotating member 3122, and the number of the first adjusting screws 3123 are the same or similar, which will not be repeated in this embodiment of the present application.

In some embodiments, as shown in FIG. 8 or FIG. 10, the first control assembly 312 further includes a second elastic member 3324, the second elastic member 3324 is sleeved on the second adjusting screw 3323, and two of the second elastic member 3324 The ends abut against the second rotating member 3322 and the second moving bearing housing 331 respectively. In this way, the second elastic member 3324 can buffer the second moving bearing housing 331 when the second moving bearing housing 331 moves, so as to further ensure that the second control assembly 332 is relatively stable to the second moving bearing housing 331. The adjustment accuracy avoids the sudden displacement of the second moving bearing housing 331.

In some embodiments, the second moving component 33 further includes a second sensor; the second sensor is fixed on the first moving bearing housing 311 and is located in the moving direction of the second moving bearing housing 331. The two sensors are used to detect the moving distance of the second moving bearing housing 331, and when the moving distance is equal to the third distance threshold, send a second control signal to the second motor 3321 to control the second motor 3321 to stop, thereby controlling the second motor 3321. The moving bearing housing 331 stops moving.

Wherein, the fixing method and working principle of the second sensor can be referred to the fixing method and working principle of the first sensor described in the foregoing embodiment, which will not be repeated in the embodiment of the present application.

Next, the moving position of the lens barrel 32 will be explained in conjunction with the first moving component 31 and the second moving component 33 described above.

As shown in FIG. 11, the lens 3 includes a first moving assembly 31 and a second moving assembly 33. The first moving assembly 31 drives the lens barrel 32 to move in the left and right directions, and the second moving assembly 33 drives the lens barrel 32 to move in the up and down directions, thereby Under the joint action of the first moving component 31 and the second moving component 33, the lens barrel 32 can be moved in a two-dimensional plane.

Among them, the sliding manner of the first movable supporting housing 311 included in the first moving assembly 31 described in the above-mentioned embodiment is the same as the sliding manner of the second movable supporting housing 331 included in the second moving assembly 33 described in the above-mentioned embodiment. The method can be combined arbitrarily.

For example, as shown in FIG. 11, the first moving bearing housing 311 included in the first moving assembly 31 has a first oblong hole 3111, and the direction of the first oblong hole 3111 is horizontal; the second moving assembly 33 includes multiple There are two second moving guide rods 333, and the length direction of the second moving guide rod 333 is the vertical direction.

Wherein, at least one side of the first moving bearing housing 311 has a first lubricating member 3113 surrounding the first oblong hole 3111, so as to reduce the resistance when the first moving bearing housing 311 slides through the first lubricating member 3113; When the second moving bearing housing 331 slides, the second moving guide rod 333 ensures the stability of the sliding of the second moving bearing housing 331 and avoids the phenomenon of swinging of the second moving bearing housing 333.

In the first case, when the first moving bearing housing 311 moves in the horizontal direction, since the second moving bearing housing 331 is fixed on the first moving bearing housing 311, at this time the first moving bearing housing 311. The second moving bearing housing 331 and the lens barrel 32 move together in a horizontal direction. That is, compared to FIG. 11, the lens barrel 32 in FIG. 12 has a certain moving distance in the horizontal to the left direction.

In the second case, when the second moving bearing housing 331 moves in the vertical direction, since the first moving bearing housing 311 is fixed, only the second moving bearing housing 331 and the lens barrel 32 move together. Move in the vertical direction. That is, compared to FIG. 11, the lens barrel 32 in FIG. 13 has a certain moving distance in the vertical downward direction.

In the third case, when the first moving bearing housing 311 moves in the horizontal direction and the second moving bearing housing 331 moves in the vertical direction, the first moving bearing housing 311 and the second moving bearing housing 311 move in the horizontal direction. The body 331 and the lens barrel 32 move together in the horizontal direction, and then the second moving bearing housing 331 and the lens barrel 32 move together in the vertical direction. That is, compared to FIG. 11, the lens barrel 32 in FIG. 14 has a certain moving distance in the horizontal to the left direction and the vertical downward direction.

In the embodiment of the present application, the first control component drives the first moving bearing housing to slide in the first direction under the guidance of the first oblong hole and/or the first moving guide rod, thereby driving the second moving bearing housing Synchronously move with the lens barrel in the first direction, the second control assembly drives the second moving bearing housing to slide in the second direction under the guidance of the second oblong hole and/or the second moving guide rod, thereby driving the lens barrel along the Synchronous movement in the second direction, so that the automatic control of the movement process of the lens barrel in the first direction and the second direction can be realized to ensure the movement amount and accuracy of the lens barrel in the first direction and the second direction, thereby ensuring the lens barrel After adjustment, the projection area of the lens is adjusted to the preset position, thereby improving the projection effect of the projection host.

The above are only illustrative examples of the embodiments of the present application, and are not intended to limit the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall It is included in the protection scope of the embodiments of the present application.

Claims

A projection host, characterized in that the projection host includes:

A light source system, the light source system is used to emit light beams;

An optomechanical system, the optomechanical system is located on the light exit side of the light source system, and the optomechanical system is used to receive the light beam and emit a modulated light beam after modulation;

A lens, the lens including a first moving component and a lens barrel;

The first moving component includes a first moving bearing housing and a first control component. The first moving bearing housing is slidably connected to the light emitting side of the optical-mechanical system, and the first control component is fixed. On the light-exit side of the optical-mechanical system and in transmission connection with the first moving bearing housing, the first control assembly is used to receive a first control instruction to drive the first moving bearing housing along Move in the first direction;

The lens barrel is connected to the first movable bearing housing, and the first movable bearing housing has a first light transmission hole, and the lens barrel is used to receive modulation passing through the first light transmission hole. Beam and perform imaging.
3. The projection host according to claim 1, wherein the lens further comprises a second moving component, and the second moving component comprises a second moving bearing housing and a second control component;

The second moving bearing housing is slidably connected to the side of the first moving bearing housing away from the opto-mechanical system, and the second control assembly is fixed to the first moving bearing housing Body, and in transmission connection with the second moving bearing housing, the second control assembly is used to receive a second control command to drive the second moving bearing housing to move in a second direction, the The first direction is not parallel to the second direction;

The lens barrel is fixedly connected to the second movable bearing housing, and the second movable bearing housing has a second light-transmitting hole, and the lens barrel is used to receive the light passing through the second light-transmitting hole. Modulate the beam and perform imaging.
3. The projection host according to claim 1 or 2, wherein the lens further comprises a connector;

The connecting member is fixedly connected to the light-emitting side of the optical-mechanical system, the first moving bearing housing is slidably connected to the connecting member, and the first control component is fixed to the connecting member, The connecting member has a third light-transmitting hole, and the modulated light beam emitted by the opto-mechanical system can pass through the third light-transmitting hole.
3. The projection host of claim 3, wherein the first control component comprises a first motor, a first rotating member and a first adjusting screw;

The first motor is fixedly connected to the connecting member, the first rotating member is rotatably limited on the connecting member, and the first rotating member is drivingly connected to the output shaft of the first motor;

One end of the first adjusting screw is fixedly connected with the first rotating member along the axial direction of the first rotating member, and the other end of the first adjusting screw is threadedly connected with the first moving bearing housing.
5. The projection host of claim 4, wherein the axial direction of the output shaft of the first motor is perpendicular or parallel to the length direction of the first adjusting screw.
4. The projection host of claim 4, wherein the number of the first adjustment screws is two, and the screw threads of the two first adjustment screws are opposite to each other.
7. The projection host according to any one of claims 4-6, wherein the first control assembly further comprises a first elastic member, the first elastic member is sleeved on the first adjusting screw, and the Two ends of the first elastic member abut against the first rotating member and the first moving bearing housing respectively.
5. The projection host of claim 3, wherein the first moving assembly further comprises a plurality of first moving guide rods, and the plurality of first moving guide rods are fixed on the connecting member in parallel with each other, The first moving bearing housing is slidably sleeved on the plurality of first moving guide rods.
The projection host according to claim 3, wherein the first movable bearing housing has a plurality of first oblong holes and a plurality of first fixing members corresponding to the plurality of first oblong holes one-to-one ；

The length directions of the plurality of first oblong holes are all parallel, and each first fixing member passes through the corresponding first oblong hole and is fixedly connected to the connecting member.
4. The projection host of claim 3, wherein the first moving assembly further comprises a first moving guide rod and a plurality of first fixing parts, and the first moving bearing housing is connected to the plurality of A plurality of first oblong holes one-to-one corresponding to the first fixing member;

The first moving guide rod is fixed on the connecting member, the first moving bearing housing is slidably sleeved on the first moving guide rod, and the length direction of the plurality of first oblong holes Both are parallel to the length direction of the first moving guide rod, and the first fixing member passes through the corresponding first oblong hole and is fixedly connected to the connecting member.
The projection host according to claim 9 or 10, wherein at least one side of the first movable bearing housing has a first lubricating member surrounding the first oblong hole.
11. The projection host of claim 11, wherein the material of the first lubricating member is polytetrafluoroethylene.
The projection host of claim 2, wherein the second moving assembly further comprises a plurality of second moving guide rods, and the plurality of second moving guide rods are fixed to the first moving bearing in parallel with each other. On the housing, the second moving bearing housing is slidably sleeved on the plurality of second moving guide rods.
3. The projection host according to claim 2, wherein the second moving assembly further comprises a second moving guide rod and a plurality of second fixing parts, and the second moving bearing housing is connected to the plurality of A plurality of second oblong holes corresponding to the second fixing member one by one;

The second moving guide rod is fixed on the first moving bearing housing, the second moving bearing housing is slidably sleeved on the second moving guide rod, and a plurality of the second The length direction of the oblong hole is parallel to the length direction of the second moving guide rod, and the second fixing member passes through the corresponding second oblong hole and is fixedly connected to the first moving bearing housing.
14. The projection main unit of claim 14, wherein at least one side of the second movable bearing housing is provided with a second lubricating member surrounding the second oblong hole.