An automatic focus projection system for stage lights based on image processing

Abstract

The invention discloses an automatic focusing projection system for stage lights based on image processing, which solves the problem that manual focusing is required and the focusing time is long when the stage lights are rotated and switched. The system comprises a body, both ends of the body are provided with end covers, the end cover on the front of the body is provided with a lens assembly, the top of the body is provided with a top protection box, a focus control assembly is provided inside the top protection box, a moving control assembly is provided on the top of the end cover on the front of the body, and the material of the end of the top protection box close to the front of the body is transparent glass; in the present invention, during operation, a projection picture can be photographed by a set industrial camera, and the ratio of the projection picture to the camera picture in the camera picture is calculated by a computer, and a movable lens tube is movably provided on the inner side of the fixed lens tube, and a convex lens is installed at the end of the movable lens tube, so that the projection focal length can be adjusted conveniently and the focusing is convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of projection systems, and in particular relates to an automatic focusing projection system for stage lights based on image processing. Background Art

[0002] The stage light is composed of a multi-layer pattern plate, an aperture, a focusing lens group, a zoom lens, a light output lens and other parts. The focusing lens group and the zoom lens form a dynamic optical lens group. The display pattern placed on the central axis of the optical lens group is projected at a distance through the optical lens group to form a clear real image. Due to the uncertainty of the application environment, the stage light needs to project clear real images of different sizes at different distances. This requires adjusting the distance between the optical lens groups in the stage light and the distance between the optical lens group and the pattern plate and the aperture, but there are the following defects: Due to the particularity of the application environment of stage lights, when the stage lights are rotated and switched, the distance between the stage projection lamp and the projection background may change. After the distance changes, manual focus is required, and the focus time is long, making it difficult to use on the stage. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an automatic focus projection system for stage lights based on image processing, which effectively solves the problem of manual focus and long focusing time when the stage lights are rotated and switched.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an image processing-based stage light auto-focus projection system, comprising a body, both ends of the body are provided with end covers, a lens assembly is provided on the end cover at the front of the body, a top protective box is installed at the top of the body, a focus control assembly is provided inside the top protective box, and a movement control assembly is installed at the top of the end cover at the front of the body; The material of the top protective box near the front of the machine body is transparent glass; The lens assembly includes a fixed lens tube fixedly mounted on the end cover at the front of the machine body, a movable lens tube is movably mounted inside the fixed lens tube, a convex lens is arranged at one end of the movable lens tube away from the machine body, a projection module is mounted inside the machine body, the projection module projects a projection picture toward the inside of the movable lens tube, and the projection picture is magnified by the convex lens and projected onto the projection background surface; The focus control component includes an industrial camera arranged on the inner side of the top protective box. A mounting plate is installed at the bottom of the industrial camera. The mounting plate is used to shoot the projection picture and transmit the shot picture to the computer. The computer calculates the ratio of the projection picture to the camera picture in the camera picture, and adjusts the projection picture according to the ratio of the projection picture to the camera picture in the camera picture. A mobile driving unit is arranged between the mounting plate and the body, and a mobile transmission unit is arranged between the mounting plate and the movable lens tube.

[0005] Preferably, the mobile drive unit includes a fixed base fixedly installed on the top of the body, a sliding groove is opened inside the fixed base, the bottom end of the mounting plate is slidably connected to the sliding groove, a screw is rotatably installed inside the sliding groove, the screw is threadedly connected to the mounting plate, a driven gear is installed at one end of the screw, a driving gear is meshed and connected above the driven gear, the driving gear is fixedly connected to the output shaft of the motor, and the motor is fixedly installed on the fixed base.

[0006] Preferably, the mobile transmission unit includes a top slide groove opened at the top of the fixed lens tube, a sliding longitudinal plate is fixedly installed at the top of the movable lens tube, the sliding longitudinal plate is slidably connected to the top slide groove, a moving horizontal plate is fixedly installed on the side of the top of the sliding longitudinal plate close to the body, a plate groove is opened on the end cover on the front side of the body, the moving horizontal plate is slidably installed inside the plate groove, and an end plate is fixedly installed on the end of the moving horizontal plate located above the body.

[0007] Preferably, side tooth plates are symmetrically installed on both sides of the end plate, the side of the side tooth plate away from the end plate is meshed with a middle gear, the side of the middle gear away from the end plate is meshed with a connecting tooth plate, and the two connecting tooth plates are fixedly connected to the mounting plate.

[0008] Preferably, the movable control assembly includes a fixed box fixedly installed on the top of the end cover, a movable block is movably installed inside the fixed box, a clamping and fixing unit is arranged below the movable block, a glass cleaning unit is arranged above the fixed box, two transverse sliding grooves are symmetrically opened on the inner wall of the fixed box, the movable block is slidably connected to the transverse sliding grooves, and extrusion inclined surfaces are symmetrically opened on both sides of the bottom end of the movable block.

[0009] Preferably, side springs are symmetrically installed on both sides of the movable block, and the two side springs are fixedly connected to the inner walls of the two ends of the fixed box respectively. Magnetic blocks are symmetrically installed on both sides of the movable block, and electromagnets are installed at both ends of the fixed box.

[0010] Preferably, a conductive rod is installed on the movable block, two first contacts are symmetrically installed on the inner wall of the fixed box, and two second contacts are symmetrically installed on the inner wall of the fixed box. The first contact and the second contact are respectively arranged on both sides of the conductive rod. When the two ends of the conductive rod are respectively in contact with the two first contacts, the motor is connected to a forward current, and when the two ends of the conductive rod are respectively in contact with the two second contacts, the motor is connected to a reverse current.

[0011] Preferably, the clamping and fixing unit includes a bottom groove opened at the top of the plate groove, the bottom groove is connected to the inner cavity of the fixed box, longitudinal sliding grooves are symmetrically opened on both sides of the bottom groove, a clamping plate is movably installed inside the bottom groove, the bottom wall of the clamping plate contacts the top wall of the movable cross plate, a pressing plate is arranged above the clamping plate, the pressing plate is slidably connected to the longitudinal sliding groove, clamping springs are symmetrically installed between the pressing plate and the clamping plate, and a protrusion is installed on the top of the pressing plate.

[0012] Preferably, the glass cleaning unit includes side blocks symmetrically installed at both ends of the inner cavity of the fixed box. When the movable blocks contact the two side blocks respectively, the conductive rod moves to the contact position with the first contact and the second contact respectively. A mounting frame is provided above the fixed box, and a cleaning roller is rotatably installed on the mounting frame. The cleaning roller is used to clean the front glass surface of the top protective box.

[0013] Preferably, the side block is provided with an internal groove, a transverse groove is provided at one end of the two internal grooves close to each other, a longitudinal groove is provided at the top of the internal groove, a support plate is slidably installed inside the longitudinal groove, the support plate is fixedly connected to the mounting frame, a cross bar is movably installed inside the transverse groove, the ends of the two cross bars are respectively in contact with the two sides of the movable block, an end plate is installed at the other end of the cross bar, a connecting rod is provided between the end plate and the support plate, and the two ends of the connecting rod are respectively hinged to the end plate and the support plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1) During operation, an industrial camera is arranged on the top of the machine body, which can shoot the projection screen and calculate the ratio of the projection screen to the camera screen through a computer. A movable lens tube is arranged on the inner side of the fixed lens tube, and a convex lens is installed at the end of the movable lens tube, so as to facilitate the adjustment of the projection focal length and the focusing; 2) During operation, the mounting plate at the bottom of the industrial camera is slidably mounted on the sliding groove, and the motor can drive the industrial camera to move. The industrial camera moves in the opposite direction by connecting the gear plate, the middle gear and the side gear plate, so that when the projection image is large, the convex lens moves toward the projection background, and when the projection image is small, the convex lens moves away from the projection background, thereby improving the focus automation level; 3) During operation, after the ratio of the projection image to the camera image in the set camera image is calculated, when the ratio is large or small, the electromagnets on both sides are energized respectively, so that the movable block moves to contact the conductive rod with the first contact and the second contact respectively, so that the screw moves in different directions, thereby facilitating the adjustment of the distance between the industrial camera and the projection background, thereby driving the convex lens to move, and facilitating automatic focusing; 4) During operation, after the movable block is moved horizontally, the movable block leaves the top of the convex block, and the pressing plate moves upward under the action of the pressing spring, so that the pressing plate no longer presses the movable horizontal plate, which facilitates the movement of the movable lens tube. After the movable block moves back, the pressing plate moves downward, so that the pressing spring is compressed to press the pressing plate against the movable horizontal plate, thereby improving the fixing stability of the movable lens tube and improving the projection stability. 5) During operation, when the movable block moves, the cross bar is pushed toward one side of the support plate, and the support plate is pushed upward by the connecting rod, thereby pushing the cleaning roller upward. After the movable block moves back, the cleaning roller moves downward under the action of gravity, thereby cleaning the transparent glass at the end of the top protective box through the cleaning roller, thereby improving the accuracy of the industrial camera in shooting the projection image. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached picture: Figure 1 It is a structural schematic diagram of an automatic focus projection system for stage lights based on image processing of the present invention; Figure 2 It is a schematic diagram of the structure of the lens assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the focus control component of the present invention; Figure 4 It is a structural schematic diagram of a mobile drive unit of the present invention; Figure 5 It is a schematic diagram of the structure of the mobile control component of the present invention; Figure 6 It is a schematic diagram of the structure of the glass cleaning unit of the present invention; Figure 7 It is a schematic diagram of the structure of the pressing and fixing unit of the present invention.

[0017] In the figure: 1, body; 2, end cover; 3, lens assembly; 301, fixed lens tube; 302, movable lens tube; 303, convex lens; 4, focus control assembly; 401, industrial camera; 402, mounting plate; 403, mobile drive unit; 4031, fixed base; 4032, sliding groove; 4033, screw; 4034, driven gear; 4035, driving gear; 4036, motor; 404, mobile transmission unit; 4041, top slide; 4042, sliding longitudinal plate; 4043, mobile horizontal plate; 4044, plate groove; 4045, end plate; 4046, side tooth plate; 4047, middle gear; 4048, connecting tooth plate; 5, mobile control assembly; 501, fixed box; 5 02. Electromagnet; 503. Horizontal slide; 504. Movable block; 505. Extrusion slope; 506. Side spring; 507. Magnetic block; 508. First contact; 509. Second contact; 510. Pressing and fixing unit; 5101. Bottom groove; 5102. Longitudinal slide; 5103. Pressing plate; 5104. Pressing plate; 5105. Pressing spring; 5106. Bump; 511. Glass cleaning unit; 5111. Side block; 5112. Internal groove; 5113. Horizontal groove; 5114. Longitudinal groove; 5115. Support plate; 5116. Mounting frame; 5117. Cleaning roller; 5118. End plate; 5119. Cross bar; 51110. Connecting rod; 512. Conductive rod; 6. Top protection box. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] Depend on Figure 7 The present invention relates to an automatic focus projection system for stage lights based on image processing, comprising a body 1, end covers 2 are arranged at both ends of the body 1, a lens assembly 3 is arranged on the end cover 2 located on the front of the body 1, a top protective box 6 is installed on the top of the body 1, a focus control assembly 4 is arranged inside the top protective box 6, a movement control assembly 5 is installed on the top of the end cover 2 located on the front of the body 1, and the material of the top protective box 6 at one end close to the front of the body 1 is transparent glass.

[0020] The lens assembly 3 includes a fixed lens tube 301 fixedly mounted on the front end cover 2 of the body 1, a movable lens tube 302 is movably mounted inside the fixed lens tube 301, a convex lens 303 is arranged at one end of the movable lens tube 302 away from the body 1, a projection module is installed inside the body 1, the projection module projects a projection picture toward the inside of the movable lens tube 302, and the projection picture is magnified by the convex lens 303 and projected onto the projection background surface.

[0021] The focus control component 4 includes an industrial camera 401 arranged on the inner side of the top protection box 6. The industrial camera 401 is arranged on the top of the body 1. The industrial camera 401 can shoot the projection picture and calculate the ratio of the projection picture to the camera picture in the camera picture through a computer. A movable lens tube 302 is movably arranged on the inner side of the fixed lens tube 301. A convex lens 303 is installed at the end of the movable lens tube 302, so as to facilitate the adjustment of the projection focal length and the focusing. A mounting plate 402 is installed at the bottom of the industrial camera 401. The mounting plate 402 is used to shoot the projection picture and transmit the shot picture to the computer. The ratio of the projection picture to the camera picture in the camera picture is calculated by the computer. The projection picture is adjusted according to the ratio of the projection picture to the camera picture. A mobile driving unit 403 is arranged between the mounting plate 402 and the body 1. A mobile transmission unit 404 is arranged between the mounting plate 402 and the movable lens tube 302. The mobile driving unit 403 includes a fixed base 4031 fixedly mounted on the top of the body 1. A sliding groove 4032 is provided inside the fixed base 4031. The bottom end of the mounting plate 402 is slidably connected to the sliding groove 4032. A screw rod 4033 is rotatably installed inside the sliding groove 4032. The screw rod 4033 is threadedly connected to the mounting plate 402. A driven gear 4034 is installed at one end of the screw rod 4033. A driving gear 4035 is meshedly connected to the upper side of the driven gear 4034. The driving gear 4035 is engaged with the motor 40 The output shaft of the movable lens tube 302 is fixedly connected, the motor 4036 is fixedly installed on the fixed base 4031, the mobile transmission unit 404 includes a top slide groove 4041 opened at the top of the fixed lens tube 301, a sliding longitudinal plate 4042 is fixedly installed on the top of the movable lens tube 302, the sliding longitudinal plate 4042 is slidably connected to the top slide groove 4041, a moving transverse plate 4043 is fixedly installed on the side of the top of the sliding longitudinal plate 4042 close to the body 1, a plate groove 4044 is opened on the end cover 2 at the front of the body 1, the moving transverse plate 4043 is slidably installed inside the plate groove 4044, an end plate 4045 is fixedly installed on one end of the moving transverse plate 4043 located above the body 1, and side tooth plates 4046 are symmetrically installed on both sides of the end plate 4045, and the side tooth plates 4046 are symmetrically installed on both sides of the side tooth plates 4046. 046 is meshedly connected with a middle gear 4047 on one side away from the end plate 4045, and a connecting tooth plate 4048 is meshedly connected with the middle gear 4047 on one side away from the end plate 4045. The two connecting tooth plates 4048 are fixedly connected to the mounting plate 402. The mounting plate 402 at the bottom of the industrial camera 401 is slidably mounted on the sliding groove 4032. The industrial camera 401 can be driven to move by the motor 4036. The movement of the industrial camera 401 drives the movable lens tube 302 to move in the opposite direction through the connecting tooth plate 4048, the middle gear 4047 and the side tooth plate 4046, so that when the projection picture is large, the convex lens 303 moves toward the projection background side, and when the projection picture is small, the convex lens 303 moves toward the side away from the projection background.Improve the focus automation level.

[0022] The mobile control assembly 5 includes a fixed box 501 fixedly installed on the top of the end cover 2, a movable block 504 is movably installed inside the fixed box 501, a clamping and fixing unit 510 is arranged below the movable block 504, a glass cleaning unit 511 is arranged above the fixed box 501, two horizontal slide grooves 503 are symmetrically arranged on the inner wall of the fixed box 501, the movable block 504 is slidably connected to the horizontal slide grooves 503, extrusion inclined surfaces 505 are symmetrically arranged on both sides of the bottom of the movable block 504, side springs 506 are symmetrically installed on both sides of the movable block 504, and the two side springs 506 are respectively fixedly connected to the inner walls of the two ends of the fixed box 501, magnetic blocks 507 are symmetrically installed on both sides of the movable block 504, electromagnets 502 are installed at both ends of the fixed box 501, a conductive rod 512 is installed on the movable block 504, and two first contacts are symmetrically installed on the inner wall of the fixed box 501 Point 508, two second contacts 509 are symmetrically installed on the inner wall of the fixed box 501, and the first contact 508 and the second contact 509 are respectively arranged on both sides of the conductive rod 512. When the two ends of the conductive rod 512 are respectively in contact with the two first contacts 508, the motor 4036 is connected to the forward current. When the two ends of the conductive rod 512 are respectively in contact with the two second contacts 509, the motor 4036 is connected to the reverse current. After the ratio of the projection image and the camera image in the camera image is calculated, when the ratio is large or small, the electromagnets 502 on both sides are energized respectively, and the movable block 504 is moved to make the conductive rod 512 contact with the first contact 508 and the second contact 509 respectively, so as to facilitate the movement of the screw 4033 in different directions, thereby facilitating the adjustment of the distance between the industrial camera 401 and the projection background, thereby driving the convex lens 303 to move, and facilitating automatic focusing.

[0023] The clamping and fixing unit 510 includes a bottom groove 5101 opened at the top of the plate groove 4044, the bottom groove 5101 is connected to the inner cavity of the fixing box 501, longitudinal slide grooves 5102 are symmetrically opened on both sides of the bottom groove 5101, a clamping plate 5104 is movably installed inside the bottom groove 5101, the bottom wall of the clamping plate 5104 is in contact with the top wall of the movable horizontal plate 4043, a pressing plate 5103 is arranged above the clamping plate 5104, the pressing plate 5103 is slidably connected to the longitudinal slide groove 5102, and a clamping spring 5105 is symmetrically installed between the pressing plate 5103 and the clamping plate 5104. A protrusion 5106 is installed on the top of the pressing plate 5103. After the movable block 504 moves horizontally, the movable block 504 leaves the top of the protrusion 5106, and the pressing plate 5103 moves upward under the action of the clamping spring 5105, so that the clamping plate 5104 no longer presses the movable horizontal plate 4043, which facilitates the movement of the movable lens tube 302. After the movable block 504 moves back, the pressing plate 5103 is pressed downward, so that the clamping spring 5105 is compressed to make the clamping plate 5104 press the movable horizontal plate 4043, thereby improving the fixing stability of the movable lens tube 302 and improving the projection stability.

[0024] The glass cleaning unit 511 includes side blocks 5111 symmetrically installed at both ends of the inner cavity of the fixed box 501. When the movable block 504 contacts the two side blocks 5111 respectively, the conductive rod 512 moves to the contact position with the first contact 508 and the second contact 509 respectively. A mounting frame 5116 is arranged above the fixed box 501. A cleaning roller 5117 is rotatably installed on the mounting frame 5116. The cleaning roller 5117 is used to clean the front glass surface of the top protection box 6. An internal groove 5112 is provided inside the side block 5111. A transverse groove 5113 is provided at one end of the two internal grooves 5112 close to each other. A longitudinal groove 5114 is provided at the top of the internal groove 5112. A support plate 5115 is slidably installed inside the longitudinal groove 5114. The support plate 5115 is fixedly connected to the mounting frame 5116. The transverse groove 5 113 is movably installed with a cross bar 5119 inside, and the ends of the two cross bars 5119 are in contact with the two sides of the movable block 504 respectively, and the other end of the cross bar 5119 is installed with an end plate 5118, and a connecting rod 51110 is arranged between the end plate 5118 and the support plate 5115, and the two ends of the connecting rod 51110 are hingedly installed with the end plate 5118 and the support plate 5115 respectively. When the movable block 504 moves, it pushes the cross bar 5119 to move toward the side of the support plate 5115, and pushes the support plate 5115 upward through the connecting rod 51110, thereby pushing the cleaning roller 5117 to move upward, and after the movable block 504 moves back, the cleaning roller 5117 moves downward under the action of gravity, so that the transparent glass at the end of the top protective box 6 is cleaned by the cleaning roller 5117, thereby improving the accuracy of the industrial camera 401 in shooting the projection picture.

[0025] Working principle: When working, the projection module inside the body 1 emits the picture light beam into the inside of the movable lens tube 302, and then it is magnified by the convex lens 303 at the end of the movable lens tube 302 and emitted onto the background object to complete the projection, and the industrial camera 401 inside the top protective box 6 can shoot the projection picture through the transparent glass on the front of the top protective box 6, and transmit the camera picture to the computer in real time, and the computer calculates the ratio of the projection picture to the camera picture in the camera picture. When the body 1 is far away from the projection background object, the projection picture is large, the projection quality is fuzzy, and the ratio of the projection picture to the camera picture in the camera picture of the industrial camera 401 is large, and when the body 1 is close to the projection background object, the projection picture is small and difficult to see clearly, and the ratio of the projection picture to the camera picture in the camera picture of the industrial camera 401 is small; When the ratio of the projection image to the camera image in the camera image is large, the computer outputs a signal to the controller, so that the controller controls the electromagnet 502 on one side to be energized to generate attraction to the magnetic block 507, thereby pulling the movable block 504 to move toward one side until the movable block 504 contacts the side block 5111 at one end. At this time, the two ends of the conductive rod 512 are respectively in contact with the two first contacts 508, so that the motor 4036 is fed with a positive current, so that the screw 4033 rotates forward, driving the industrial camera 401 to move away from the projection position. As the industrial camera 401 is positioned The distance between the position and the projection position increases, so that the ratio of the projection picture to the camera picture in the camera picture gradually decreases. When the industrial camera 401 moves, the connecting gear plate 4048 is driven to move, and then the end plate 4045 is driven to move toward the projection position through the middle gear 4047 and the side gear plate 4046, and then the movable lens tube 302 is driven to move toward the projection position, so that the distance between the convex lens 303 and the projection position is shortened, thereby reducing the projection picture and making the picture clearer, until the ratio of the projection picture to the camera picture in the camera picture is adjusted to a preset value; When the ratio of the projection image to the camera image in the camera image is small, the computer outputs a signal to the controller, so that the controller controls the electromagnet 502 on the other side to be energized to generate attraction to the magnetic block 507, thereby pulling the movable block 504 to move toward one side until the movable block 504 contacts the side block 5111 at the other end. At this time, the two ends of the conductive rod 512 are respectively in contact with the two second contacts 509, so that the motor 4036 is fed with reverse current, so that the screw 4033 rotates in the reverse direction, driving the industrial camera 401 to move toward the projection position. As the position of the industrial camera 401 increases, the industrial camera 401 moves to the projection position. The distance from the projection position decreases, so that the ratio of the projection image to the camera image in the camera image gradually increases. When the industrial camera 401 moves, the connecting gear plate 4048 is driven to move, and then the end plate 4045 is driven to move away from the projection position through the middle gear 4047 and the side gear plate 4046, and then the movable lens tube 302 is driven to move away from the projection position, so that the distance between the convex lens 303 and the projection position increases, thereby increasing the projection image and making the image clearer, until the ratio of the projection image to the camera image in the camera image is adjusted to a preset value; When the movable block 504 moves laterally away from the middle position, the movable block 504 leaves the top of the protrusion 5106. Under the elastic force of the pressing spring 5105, the pressing plate 5103 moves upward, so that the pressing force of the pressing plate 5104 on the movable horizontal plate 4043 is reduced, which is convenient for moving and adjusting the movable lens tube 302. When the adjustment is completed, the computer outputs a signal to the controller to cut off the power to the electromagnet 502. At this time, the movable block 504 moves back laterally under the elastic force of the side spring 506, so that the extrusion inclined surface 505 at the bottom end of the movable block 504 produces pressure on the protrusion 5106. When the movable block 504 moves to the top of the protrusion 5106, it pushes the pressing plate 5103 to move downward, so that the pressing spring 5105 is compressed, so that the pressing spring 5105 produces pressure on the pressing plate 5104, so that the pressing plate 5104 presses the movable horizontal plate 4043, thereby pressing and fixing the movable lens tube 302, improving the projection stability. When the electromagnet 502 is energized, the movable block 504 moves laterally to generate pressure on the cross bar 5119 on one side, pushing the cross bar 5119 to move toward the side of the support plate 5115, and then pushing the support plate 5115 upward through the connecting rod 51110, thereby pushing the cleaning roller 5117 to move upward, causing the cleaning roller 5117 to move upward; when the electromagnet 502 is de-energized, the movable block 504 moves back, and the cleaning roller 5117 moves downward under the action of gravity, causing the cleaning roller 5117 to clean the transparent glass on the top protective box 6, thereby ensuring the clarity of the shooting of the industrial camera 401 and improving the focusing effect, and the upper and lower extreme positions of the movement of the cleaning roller 5117 will not hinder the shooting of the industrial camera 401.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic focus projection system for stage lights based on image processing, comprising a body (1), characterized in that: Both ends of the body (1) are provided with end covers (2); a lens assembly (3) is provided on the end cover (2) located at the front of the body (1); a top protective box (6) is installed at the top of the body (1); a focus control assembly (4) is provided inside the top protective box (6); and a movement control assembly (5) is installed at the top of the end cover (2) located at the front of the body (1); The material of the end of the top protection box (6) close to the front of the machine body (1) is transparent glass; The lens assembly (3) comprises a fixed lens tube (301) fixedly mounted on a front end cover (2) of the body (1); a movable lens tube (302) is movably mounted inside the fixed lens tube (301); a convex lens (303) is disposed at one end of the movable lens tube (302) away from the body (1); a projection module is mounted inside the body (1); the projection module projects a projection image toward the inside of the movable lens tube (302); the projection image is magnified by the convex lens (303) and projected onto a projection background surface; The focus control component (4) comprises an industrial camera (401) arranged inside a top protective box (6); a mounting plate (402) is mounted on the bottom end of the industrial camera (401); the mounting plate (402) is used to shoot a projection image and transmit the shot image to a computer; the ratio of the projection image to the camera image in the camera image is calculated by the computer; the projection image is adjusted according to the ratio of the projection image to the camera image in the camera image; a moving drive unit (403) is arranged between the mounting plate (402) and the machine body (1); and a moving transmission unit (404) is arranged between the mounting plate (402) and the movable lens tube (302).

2. The stage light auto-focus projection system based on image processing according to claim 1, characterized in that: The mobile drive unit (403) comprises a fixed base (4031) fixedly mounted on the top of the machine body (1); a sliding groove (4032) is provided inside the fixed base (4031); the bottom end of the mounting plate (402) is slidably connected to the sliding groove (4032); a screw rod (4033) is rotatably mounted inside the sliding groove (4032); the screw rod (4033) is threadedly connected to the mounting plate (402); a driven gear (4034) is mounted on one end of the screw rod (4033); a driving gear (4035) is meshedly connected to the top of the driven gear (4034); the driving gear (4035) is fixedly connected to the output shaft of the motor (4036); and the motor (4036) is fixedly mounted on the fixed base (4031).

3. The stage light auto-focus projection system based on image processing according to claim 1, characterized in that: The mobile transmission unit (404) comprises a top slide groove (4041) provided at the top of the fixed lens tube (301); a sliding longitudinal plate (4042) is fixedly installed at the top of the movable lens tube (302); the sliding longitudinal plate (4042) is slidably connected to the top slide groove (4041); a moving transverse plate (4043) is fixedly installed on the side of the top of the sliding longitudinal plate (4042) close to the machine body (1); a plate groove (4044) is provided on the end cover (2) at the front of the machine body (1); the moving transverse plate (4043) is slidably installed inside the plate groove (4044); and an end plate (4045) is fixedly installed on the end of the moving transverse plate (4043) located above the machine body (1).

4. The stage light auto-focus projection system based on image processing according to claim 3, characterized in that: Side toothed plates (4046) are symmetrically mounted on both sides of the end plate (4045); a side of the side toothed plate (4046) away from the end plate (4045) is meshingly connected to a middle gear (4047); a side of the middle gear (4047) away from the end plate (4045) is meshingly connected to a connecting toothed plate (4048); and the two connecting toothed plates (4048) are fixedly connected to the mounting plate (402).

5. The stage light auto-focus projection system based on image processing according to claim 1, characterized in that: The mobile control assembly (5) comprises a fixed box (501) fixedly mounted on the top of the end cover (2); a movable block (504) is movably mounted inside the fixed box (501); a pressing and fixing unit (510) is arranged below the movable block (504); a glass cleaning unit (511) is arranged above the fixed box (501); two transverse sliding grooves (503) are symmetrically provided on the inner wall of the fixed box (501); the movable block (504) is slidably connected to the transverse sliding grooves (503); and extrusion inclined surfaces (505) are symmetrically provided on both sides of the bottom end of the movable block (504).

6. The stage light auto-focus projection system based on image processing according to claim 5, characterized in that: Side springs (506) are symmetrically mounted on both sides of the movable block (504), and the two side springs (506) are fixedly connected to the inner walls at both ends of the fixed box (501), respectively. Magnetic blocks (507) are symmetrically mounted on both sides of the movable block (504), and electromagnets (502) are mounted on both ends of the fixed box (501).

7. The stage light auto-focus projection system based on image processing according to claim 5, characterized in that: A conductive rod (512) is mounted on the movable block (504), two first contacts (508) are symmetrically mounted on the inner wall of the fixed box (501), and two second contacts (509) are symmetrically mounted on the inner wall of the fixed box (501), the first contacts (508) and the second contacts (509) are respectively arranged on both sides of the conductive rod (512), when both ends of the conductive rod (512) are in contact with the two first contacts (508), the motor (4036) is connected to a forward current, and when both ends of the conductive rod (512) are in contact with the two second contacts (509), the motor (4036) is connected to a reverse current.

8. The stage light auto-focus projection system based on image processing according to claim 5, characterized in that: The clamping and fixing unit (510) comprises a bottom groove (5101) opened at the top end of the plate groove (4044), the bottom groove (5101) is connected to the inner cavity of the fixing box (501), longitudinal sliding grooves (5102) are symmetrically opened on both sides of the bottom groove (5101), a clamping plate (5104) is movably installed inside the bottom groove (5101), the bottom wall of the clamping plate (5104) contacts the top wall of the movable horizontal plate (4043), a pressing plate (5103) is arranged above the clamping plate (5104), the pressing plate (5103) is slidably connected to the longitudinal sliding groove (5102), a clamping spring (5105) is symmetrically installed between the pressing plate (5103) and the clamping plate (5104), and a protrusion (5106) is installed at the top end of the pressing plate (5103).

9. The stage light auto-focus projection system based on image processing according to claim 5, characterized in that: The glass cleaning unit (511) comprises side blocks (5111) symmetrically mounted at two ends of an inner cavity of a fixed box (501); when the movable blocks (504) respectively contact the two side blocks (5111), the conductive rod (512) respectively moves to a position of contact with a first contact point (508) and a second contact point (509); a mounting frame (5116) is disposed above the fixed box (501); a cleaning roller (5117) is rotatably mounted on the mounting frame (5116); the cleaning roller (5117) is used to clean the front glass surface of the top protective box (6).

10. The stage light auto-focus projection system based on image processing according to claim 9, characterized in that: The side block (5111) is provided with an internal groove (5112), and a transverse groove (5113) is provided at one end of the two internal grooves (5112) close to each other. A longitudinal groove (5114) is provided at the top of the internal groove (5112), and a support plate (5115) is slidably installed inside the longitudinal groove (5114), and the support plate (5115) is fixedly connected to the mounting frame (5116). A cross bar (5119) is movably installed inside the transverse groove (5113), and the ends of the two cross bars (5119) are respectively in contact with two sides of the movable block (504), and an end plate (5118) is installed at the other end of the cross bar (5119), and a connecting rod (51110) is provided between the end plate (5118) and the supporting plate (5115), and the two ends of the connecting rod (51110) are respectively hingedly installed with the end plate (5118) and the supporting plate (5115).

Images