CN113126411A

CN113126411A - Backplate light modulation device and laser projector

Info

Publication number: CN113126411A
Application number: CN202110355394.2A
Authority: CN
Inventors: 王理; 甘丹; 王圣进; 王东; 王清松; 王程
Original assignee: Shenzhen Kolo Laser Equipment Co ltd
Current assignee: Shenzhen Kolo Laser Equipment Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-07-16

Abstract

The utility model belongs to the technical field of a laser projection's technique and specifically relates to a backplate device and laser projector of adjusting luminance relates to, and it is including mounting panel and the fixing base that is used for installing the backplate, mounting panel and fixing base interval set up to the mounting panel passes through movable connection subassembly and is connected with the fixing base, and the mounting panel rotates for the fixing base level and \ or vertical direction, be provided with the drive assembly that drive mounting panel level and vertical direction inclination carried out the regulation between mounting panel and the fixing base, drive assembly sets up two at least. The method and the device have the effects of improving the color fidelity of the picture and realizing better white light.

Description

Backplate light modulation device and laser projector

Technical Field

The application relates to the technical field of laser projection, in particular to a backboard dimming device and a laser projector.

Background

The laser projection uses laser beams to transmit pictures to be displayed, optical components of the laser projection mainly comprise red, green and blue three-color light sources, and the three-color light is refracted and combined to form a color light source and then is projected to the background through a projection lens.

Application publication No. CN111142267A discloses a synthetic laser light source system of high-power RGB, including three and ruddiness, green glow and the integrated subassembly of blue light beam that corresponds, three the light path is synthesized to the light beam of the integrated subassembly of light beam, the light path is synthesized the subassembly including the second mirror that sets gradually, third speculum and fourth speculum, and the second mirror, third speculum and fourth speculum reflect the light of the integrated subassembly of light beam to second mirror reflection light orientation third speculum and fourth speculum, third speculum and fourth speculum can permeate the light of second mirror, and third speculum reflection light orientation fourth speculum, fourth speculum can permeate the light that third speculum reflected to in the use, by second mirror, third speculum and fourth speculum with ruddiness, Green and blue light are synthesized.

However, the above system causes the light to shift due to the change of the operating state such as temperature during the use process, thereby causing the color distortion of the projection picture.

Disclosure of Invention

In order to improve the color fidelity of the picture and realize better white light effect, the application provides a backboard dimming device.

The application provides a backplate device of adjusting luminance adopts following technical scheme:

the utility model provides a backplate device of adjusting luminance, is including mounting panel and the fixing base that is used for installing the backplate, mounting panel and fixing base interval set up to the mounting panel passes through movable connection subassembly and is connected with the fixing base, and the mounting panel rotates for the fixing base level and \ or vertical direction, be provided with the drive assembly that drive mounting panel level and vertical direction inclination carried out the regulation between mounting panel and the fixing base, drive assembly sets up two at least.

Through adopting above-mentioned technical scheme, during the use, be used for setting up the backplate on the mounting panel, mounting panel and fixing base interval set up, make after being connected through swing joint subassembly between mounting panel and the fixing base, the mounting panel can deflect for two directions of fixing base level and vertical direction, thereby drive assembly sets up two, when the position that two drive assembly and mounting panel are connected was adjusted, make drive assembly adjust the inclination of mounting panel level and vertical direction, thereby reach and adjust the angle of backplate, and then make backplate reflection light direction adjust, improve picture color fidelity and obtain the white light effect of preferred.

Preferably, the movable connecting assembly comprises a pressure spring and at least two tension springs, the two ends of each tension spring are connected to the fixing seat and the mounting plate respectively, the two tension springs are obliquely arranged between the connecting line of the two tension springs and the fixing seat and the vertical direction, and the driving assembly and the pressure spring are located on two sides of the connecting line of the two tension springs respectively.

Through adopting above-mentioned technical scheme, two extension springs produce the effort that is close to relatively between fixing base and the mounting panel, and the pressure spring produces the effort of keeping away from relatively between fixing base and the mounting panel to drive assembly is located the both sides of extension spring respectively with the pressure spring, thereby the pressure spring can make the mounting panel be connected with drive assembly well, guarantees drive assembly's regulation accuracy.

Preferably, the drive assembly comprises a screw and a drive motor driving the screw to rotate, the screw is in threaded connection with the fixed seat, and the end of the screw abuts against the mounting plate.

Through adopting above-mentioned technical scheme, driving motor during operation, driving motor drives the screw rod and rotates, screw rod and fixing base threaded connection to can adjust the position of mounting panel when making the tip butt of screw rod on the mounting panel, cooperate two drive assembly to make mounting panel level and vertical direction adjust.

Preferably, the fixing seat is provided with a connecting hole, a threaded sleeve is fixedly arranged in the connecting hole, and the screw is in threaded fit with the threaded sleeve.

Through adopting above-mentioned technical scheme, set up the connecting hole on the fixing base, at the fixed thread bush that sets up of connecting hole to make screw rod threaded connection in the thread bush, make things convenient for the processing of fixing base, make thread bush and fixing base batch production.

Preferably, at least one end of the tension spring is provided with an adjusting component for adjusting the elastic acting force of the tension spring.

Through adopting above-mentioned technical scheme, the adjusting part is connected to at least one end of extension spring, can adjust the pulling force of extension spring through the adjusting part, and when making the pulling force regulation of extension spring, the pulling force of pressure spring is adjusted simultaneously, and then guarantees that the mounting panel is connected with drive assembly well.

Preferably, the adjusting part comprises a fixed block, an adjusting nut and a rotating block, the fixing seat and/or the mounting plate are/is provided with a mounting hole, the fixed block is fixed in the mounting hole, the adjusting nut is in threaded connection with the fixed block, the rotating block is rotatably connected with the adjusting nut, and at least one end of the tension spring is connected with the rotating block.

Through adopting above-mentioned technical scheme, the fixed block is fixed in the mounting hole, and adjusting nut and fixed block threaded connection rotate adjusting nut, and the extension spring that the turning block is connected can extend or shorten under adjusting nut's effect to reach and adjust the pulling force of extension spring, make extension spring and pressure spring be in suitable elastic force state.

Preferably, a blind hole is formed in the side wall, oppositely arranged, of the fixing seat and the mounting plate, and the two ends of the pressure spring abut against the bottoms of the two blind holes respectively.

Through adopting above-mentioned technical scheme, set up the blind hole on fixing base and the mounting panel, the tip of pressure spring is located the blind hole, makes the pressure spring relatively more stable with being connected of fixing base and mounting panel, reduces the pressure spring and drops from fixing base and mounting panel.

Preferably, a ball head is arranged at the end of the screw rod, a ball hole is formed in the mounting plate corresponding to the position of the screw rod, and the ball head abuts against the inside of the ball hole.

Through adopting above-mentioned technical scheme, the tip of screw rod sets up the bulb, sets up the bulb on the mounting panel, and when the screw rod rotated, the bulb rotated in the bulb, made things convenient for the butt of screw rod and mounting panel, and the screw rod is more and more steady in the accommodation process to the regulation degree of accuracy of mounting panel simultaneously.

Preferably, a slide rod is coaxially and fixedly arranged on an output shaft of the driving motor, a polygon prism is fixed at the end part of the slide rod, a polygon hole is formed in one end of the screw rod connected with the driving motor, and the screw rod is in sliding fit with the polygon prism through the polygon hole.

Through adopting above-mentioned technical scheme, the slide bar is coaxial to be fixed on driving motor's output shaft, and the slide bar passes through polygon prism and polygon hole and screw rod sliding fit to at driving motor during operation, driving motor can drive the screw rod and for the flexible removal of fixing base, thereby adjust the angle of mounting panel.

In order to improve the color fidelity of the picture and realize better white light effect, the application provides a laser projector.

The application provides a laser projector, adopts following technical scheme:

a laser projector includes at least three backboard light-adjusting devices in the same line.

By adopting the technical scheme, the direction of light can be adjusted through the three backboard dimming devices, so that the color fidelity of the picture can be improved, and a better white light effect can be obtained.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the mounting plate is connected with the fixed seat through the movable connecting assembly, two driving assemblies are arranged, and when the connecting positions of the two driving assemblies and the mounting plate are adjusted, the driving assemblies are used for adjusting the inclination angles of the mounting plate in the horizontal direction and the vertical direction, so that the direction of light reflected by the back plate is adjusted, and the color fidelity of a picture and the white light effect are better;

2. the acting force relatively far away from the fixed seat and the mounting plate is generated by the pressure spring, so that the mounting plate can be well abutted against the driving assembly by the pressure spring, and the adjusting accuracy of the driving assembly is improved;

3. the ball head is arranged at the end part of the screw rod, and the mounting plate is provided with the ball hole, so that the adjusting accuracy of the screw rod on the mounting plate is high, and the adjusting process is stable.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic diagram of a full-section configuration of an embodiment of the present application;

FIG. 3 is a schematic view of the installation of the adjustment assembly;

fig. 4 is an exploded view of the drive assembly.

Description of reference numerals: 1. a fixed seat; 11. connecting holes; 2. mounting a plate; 3. a movable connection assembly; 31. a tension spring; 32. a pressure spring; 4. a drive assembly; 41. a threaded sleeve; 42. a screw; 43. a slide bar; 44. a drive motor; 45. a polygonal column; 46. a ball head; 47. a ball hole; 5. a back plate; 6. an adjustment assembly; 61. a fixed block; 62. adjusting the nut; 63. rotating the block; 64. a threaded hole; 65. hooking; 7. mounting holes; 71. a flange; 8. blind holes; 9. and (7) mounting a seat.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses backplate device of adjusting luminance. Referring to fig. 1, including fixing base 1 and mounting panel 2, fixing base 1 sets up with mounting panel 2 interval, is provided with movable connection subassembly 3 and drive mounting panel 2 for fixing base 1 drive assembly 4 at two horizontal and vertical direction slopes between fixing base 1 and mounting panel 2, fixedly on mounting panel 2 is provided with backplate 5, backplate 5 is used for reflection and transmission light for reflection lens. After the mounting plate 2 is adjusted relative to the fixing seat 1, the direction of the reflected light of the back plate 5 can be adjusted.

Referring to fig. 1 and 2, the movable connection assembly 3 includes two tension springs 31 and a pressure spring 32, the two tension springs 31 are arranged in parallel, one end of each tension spring 31 is connected to the fixing base 1, the other end of each tension spring 31 is connected to the mounting plate 2, and an included angle between a connecting line of the two tension springs 31 and the connecting point of the fixing base 1 and the vertical direction is 30-60 degrees, and is optionally 45 degrees. One side of the connecting line of the connecting points of the two tension springs 31 and the fixed seat 1 is provided with a pressure spring 32, the other side is provided with a driving component 4, and the driving component 4 is provided with two positions of the two driving components 4 and the mounting plate 2 in a butt joint mode. The connecting line of the positions where the two driving assemblies 4 abut against the mounting plate 2 can be parallel to the connecting line of the connecting positions of the two tension springs 31 and the connecting plate. During the use, two extension springs 31 and pressure spring 32 all have elastic force, the elastic force of extension spring 31 effect on mounting panel 2 is towards fixing base 1, the elastic force of pressure spring 32 effect on mounting panel 2 is kept away from in fixing base 1, thereby the effort of extension spring 31 makes mounting panel 2 move to fixing base 1's direction, the effort of pressure spring 32 is used for making mounting panel 2 be close to in one side of drive assembly 4 and keeps the butt on drive assembly 4 to support mounting panel 2, drive assembly 4 keeps good contact with mounting panel 2, drive assembly 4 is concertina movement. Two drive assembly 4 are at the during operation, and drive assembly 4 extension or shrink can make the position of mounting panel 2 with drive assembly 4 butt deflect for fixing base 1 to two drive assembly 4 make the angle between mounting panel 2 and the fixing base 1 adjust at single or two during operation, and then make backplate 5 adjust at the angle of level and/or two vertical direction slopes.

Referring to fig. 2 and 3, be provided with an adjusting part 6 respectively at the both ends of extension spring 31, be located and all seted up mounting hole 7 on fixing base 1 and the mounting panel 2, mounting hole 7 is located the position that corresponds to extension spring 31 both ends on fixing base 1 and mounting panel 2, be used for connecting adjusting part 6 in the mounting hole 7, mounting hole 7 runs through fixing base 1 and mounting panel 2, be provided with flange 71 in mounting hole 7, flange 71 extends to the center of mounting hole 7 by the lateral wall of mounting hole 7 and forms, flange 71 that is located on fixing base 1 and flange 71 that is located on mounting panel 2 all are in mounting hole 7 and are close to the one end that is close to mounting panel 2 and 1 intermediate position of fixing base. Adjusting part 6 includes fixed block 61, adjusting nut 62 and turning block 63, fixed block 61 is kept away from the one end of keeping off edge 71 by mounting hole 7 and is inserted in mounting hole 7 and butt on keeping off edge 71, fixed block 61 is interference fit with mounting hole 7, threaded hole 64 is seted up at fixed block 61 center, adjusting nut 62 and threaded hole 64 screw-thread fit, and adjusting nut 62's axis and the axis parallel arrangement of mounting hole 7, turning block 63 rotates to be connected on adjusting nut 62, the fixed couple 65 that is provided with on the turning block 63, the axis that turning block 63 and adjusting nut 62 rotate to be connected and the coincidence of adjusting nut 62's central line, the tip of extension spring 31 is hung to on couple 65. When the tension adjusting device is installed, the adjusting nut 62 is rotated to move relative to the fixing block 61, so that the tension spring 31 is extended or shortened, the tension of the tension spring 31 is adjusted, and the elastic acting force of the tension spring 31 is in a proper state.

Referring to fig. 2, a blind hole 8 is formed in each of the fixing base 1 and the mounting plate 2, the blind hole 8 is located on the side surface of the fixing base 1 opposite to the mounting plate 2, two ends of the pressure spring 32 abut against the bottom of the mounting plate 2 and the fixing base 1, the blind hole 8 is formed in the bottom, and when the tension of the tension spring 31 is adjusted, the pressure of the pressure spring 32 is synchronously adjusted, so that the tension spring 31 and the pressure spring 32 are kept in the state of having elastic acting force, the mounting plate 2 is kept in good abutting connection with the driving component 4, and the adjustment of the mounting plate 2 by the driving component 4 is accurate.

Referring to fig. 1 and 4, the driving assembly 4 includes a threaded sleeve 41, a screw rod 42, a sliding rod 43 and a driving motor 44, the driving motor 44 may be a direct current motor, the driving motor 44 is connected to the mounting base 9, the mounting base 9 is fixedly disposed, the driving motor 44 is fixed on the mounting base 9, the sliding rod 43 is coaxially and fixedly disposed on an output shaft of the driving motor 44, one end of the sliding rod 43, which is far away from the screw rod 42, is integrally provided with a polygonal column 45, and a center line of the polygonal column 45 is overlapped with a center line of the driving motor 44. A connecting hole 11 is formed in the fixing seat 1, the connecting hole 11 penetrates through the fixing seat 1, the threaded sleeve 41 is inserted into the connecting hole 11, and the threaded sleeve 41 is in interference fit with the connecting hole 11. The screw rod 42 is inserted into the center of the threaded sleeve 41 and is in threaded connection with the threaded sleeve 41, the center line of the screw rod 42 is overlapped with the output axis of the driving motor 44, one end of the screw rod 42 faces the sliding rod 43, one end of the screw rod 42 facing the sliding rod 43 is provided with a polygonal hole, and the polygonal column 45 is inserted into the polygonal hole, so that the end of the screw rod 42 is in sliding fit with the polygonal column 45 through the polygonal hole. When the driving motor 44 rotates, the sliding rod 43 drives the screw rod 42 to rotate, so that the end of the screw rod 42 is close to or far away from the fixed seat 1, the end of the screw rod 42 is provided with a ball head 46, the center of sphere of the ball head 46 is located on the central line of the screw rod 42, a ball hole 47 is formed in the position, corresponding to the screw rod 42, of the mounting plate 2, the ball head 46 abuts against the ball hole 47, the ball hole 47 is smaller than a hemisphere, and the center of sphere of the ball hole 47 is located outside the ball hole 47, so that the ball head 46 is convenient to mount in the ball hole 47.

The installation process of this embodiment:

the two ends of the tension spring 31 are connected to the fixed seat 1 and the mounting plate 2 through the adjusting assembly 6 respectively, the two ends of the pressure spring 32 are inserted into the blind holes 8 respectively, the springs of the tension spring 31 and the pressure spring 32 are adjusted through the adjusting assembly 6, then the threaded sleeve 41 is mounted, the threaded sleeve 41 is fixed into the connecting hole 11, the screw rod 42 is connected into the threaded sleeve 41 in a threaded manner, the ball head 46 at the end part of the screw rod 42 abuts against the ball hole 47, and the end part of the screw rod 42 is in sliding fit on the polygonal column 45, so that when the driving motor 44 works, the driving motor 44 drives the screw rod 42 to stretch relative to the fixed seat 1, the end part of the screw rod 42 adjusts the position of the mounting plate 2, the mounting plate 2 is well abutted against the ball head 46 under the effects of the tension spring 31 and the.

The embodiment also discloses a laser projector, which comprises three backboard dimming devices, wherein the three backboard dimming devices are respectively corresponding to the light paths of red light, blue light and green light, and the three backboard dimming devices are positioned on the same straight line, so that the light reflected or transmitted by the three backboard 5 dimming devices is positioned on the same light line, and the light direction can be adjusted in the working process, thereby achieving better color fidelity and better white light effect.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a backplate device of adjusting luminance, includes mounting panel (2) and fixing base (1) that are used for installing backplate (5), its characterized in that: mounting panel (2) and fixing base (1) interval set up to mounting panel (2) are connected with fixing base (1) through movable connection subassembly (3), and mounting panel (2) are for fixing base (1) level and \ or vertical direction rotate, be provided with between mounting panel (2) and fixing base (1) drive assembly (4) that drive mounting panel (2) level and vertical direction inclination carried out the regulation, drive assembly (4) set up two at least.

2. A backplane dimmer according to claim 1, wherein: the movable connecting assembly (3) comprises a pressure spring (32) and at least two tension springs (31), the two ends of each tension spring (31) are connected to the fixing seat (1) and the mounting plate (2) respectively, the connecting line of the two tension springs (31) and the fixing seat (1) is arranged in an inclined mode in the vertical direction, and the driving assembly (4) and the pressure spring (32) are located on two sides of the connecting line of the two tension springs (31) respectively.

3. A backplane dimmer according to claim 2, wherein: drive assembly (4) include screw rod (42) and drive screw rod (42) pivoted driving motor (44), screw rod (42) threaded connection is on fixing base (1), and the tip butt of screw rod (42) is on mounting panel (2).

4. A backplane dimmer according to claim 3, wherein: the fixing seat (1) is provided with a connecting hole (11), a threaded sleeve (41) is fixedly arranged in the connecting hole (11), and the screw rod (42) is in threaded fit with the threaded sleeve (41).

5. A backplane dimmer according to any one of claims 2-4, wherein: at least one end of the tension spring (31) is provided with an adjusting component (6) for adjusting the elastic acting force of the tension spring (31).

6. A backplane dimmer according to claim 5, wherein: adjusting part (6) include fixed block (61), adjusting nut (62) and turning block (63), mounting hole (7) have been seted up on fixing base (1) and \ or mounting panel (2), and fixed block (61) are fixed in mounting hole (7), and adjusting nut (62) threaded connection is on fixed block (61), turning block (63) rotate to be connected on adjusting nut (62), extension spring (31) at least one end is connected on turning block (63).

7. A backplane dimmer according to claim 2, wherein: the blind holes (8) are formed in the side walls, oppositely arranged, of the fixing seat (1) and the mounting plate (2), and the two ends of the pressure spring (32) are respectively abutted to the bottoms of the two blind holes (8).

8. A backplane dimmer according to claim 3, wherein: the end of the screw rod (42) is provided with a ball head (46), a ball hole (47) is formed in the position, corresponding to the screw rod (42), of the mounting plate (2), and the ball head (46) abuts against the inside of the ball hole (47).

9. A backplane dimmer according to claim 3, 4 or 8, wherein: a sliding rod (43) is coaxially and fixedly arranged on an output shaft of the driving motor (44), a polygon prism (45) is fixed at the end part of the sliding rod (43), a polygon hole is formed in one end, connected with the driving motor (44), of the screw rod (42), and the screw rod (42) is in sliding fit with the polygon prism (45) through the polygon hole.

10. A laser projector characterized by: comprising at least three back plate dimming devices of claim 1 in a single line.