CN113985693A

CN113985693A - Automatic screen processing method

Info

Publication number: CN113985693A
Application number: CN202111251095.0A
Authority: CN
Inventors: 邓贤俊
Original assignee: Shenzhen Huichuang Technology Co ltd
Current assignee: Shenzhen Huichuang Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-28

Abstract

An automatic screen processing method is characterized by comprising the following steps: A. the detection device which can move along the horizontal direction or along the vertical direction or can move along the horizontal direction and the vertical direction simultaneously detects the screen to obtain corresponding screen optical parameters; B. c, analyzing the optical parameters of the screen by the analysis device, and if the parameters are abnormal, performing the step C; C. and (3) carrying out automatic spraying maintenance on the abnormal area of the screen surface by an automatic spraying device which can move along the horizontal direction and the vertical direction under the feedback fault or control. Compared with the prior art, the method can effectively find the dirty damage of the screen in time and even automatically repair the local dirty damage of the screen.

Description

Automatic screen processing method

Technical Field

The invention relates to the field of projection screens, in particular to an automatic detection and maintenance technology for a giant screen of a cinema.

Background

With the development of technologies such as high frame rate, high resolution, high dynamics, wide color gamut shooting technology and high power high brightness laser projection, the huge screen with an area as high as hundreds of square meters or even more than one thousand square meters is gradually needed in the related industries such as cinemas, and the huge screen picture can bring obviously better visual effect and good immersive experience, but also brings the detection and processing problems of local damage of the screen: because the screen is extremely large, if the screen is partially slightly damaged or slightly dirty, such as the people watching the film, especially the children, accidentally touching or scratching the screen, the cleaner accidentally touching the screen directly during cleaning or spraying liquid onto the screen, the bug touching the screen, the dirty matter contacting the screen, etc., the screen is often not discovered in time. Especially if the damaged area is small and slight, omission is easily generated by adopting two common detection modes at present: 1, observing by using human eyes. The huge screen of hundreds of screens is easily overlooked to slightly impaired phenomena, including differences in human vision which can lead to significant differences in observations. And 2, fixing a camera near the projection window of the projector. For a large screen, the camera can be far away from the screen, and the screen is large, so the objective limitation of technical conditions is easy to cause omission. In addition, the existing solution is usually to replace the whole huge screen, which also causes huge resource waste, huge workload and huge cost loss.

Disclosure of Invention

The present invention is directed to overcoming the disadvantages and drawbacks of the prior art by providing an automatic screen detection and even automatic maintenance technique that improves upon or solves the above problems. The purpose of the invention is realized by the following technical scheme: an automatic screen processing method is characterized by comprising the following steps: A. the detection device which can move along the horizontal direction or along the vertical direction or can move along the horizontal direction and the vertical direction simultaneously detects the screen to obtain corresponding screen optical parameters;

B. c, analyzing the optical parameters of the screen by the analysis device, and if the parameters are abnormal, performing the step C;

C. and (3) carrying out automatic spraying maintenance on the abnormal area of the screen surface by an automatic spraying device which can move along the horizontal direction and the vertical direction under the feedback fault or control.

Furthermore, the detection device can detect 1 to 6 parameters of the brightness coefficient, the uniformity of the brightness distribution of the screen, the effective scattering angle, the contrast, the color reduction performance and the color temperature difference of the screen.

Furthermore, the detection device also comprises a light generating device or an image projecting device.

Furthermore, the automatic spraying device comprises a horizontal direction movement motor, a vertical direction movement motor, a movement control module, a spraying raw material, a heating mechanism, a pressure mechanism and a nozzle.

Furthermore, the material and the structure of the spraying raw material are the same as those of the raw material of the original screen reflecting layer.

Compared with the prior art, the method can effectively find the dirty damage of the screen in time and even automatically repair the local dirty damage of the screen.

Drawings

FIG. 1 is a flow chart of an automatic screen processing method according to the present invention.

Detailed Description

The invention will be further described with reference to fig. 1.

As shown in fig. 1, the screen automatic processing method of the present invention includes the following steps: A. detecting the screen by a detection device which can move along the horizontal direction or along the vertical direction or can move along the horizontal direction and the vertical direction simultaneously to obtain corresponding screen optical parameters (S100); B. the analysis device analyzes the screen optical parameters, and if the parameters are abnormal, the step C (S200) is carried out; C. the feedback failure or the control of the automatic painting device movable in both horizontal and vertical directions performs automatic painting maintenance on the abnormal area of the screen surface (S300). When the automatic spraying device which can control the movement along the horizontal direction and the vertical direction is adopted to carry out automatic spraying maintenance on the abnormal area of the screen surface in the step S300, the automatic spraying device is provided with a horizontal direction movement motor, a vertical direction movement motor, a movement control module, a spraying raw material, a heating mechanism, a pressure mechanism and a nozzle. If the step S300 is only to perform the feedback of the fault (notify the user that the screen parameter is abnormal), the automatic spraying device is not needed.

The method is necessary because the screen area of the current cinema is generally as high as hundreds of square meters or even thousands of square meters, the screen is a vulnerable product (the screen comprises a screen substrate and a screen reflecting surface, and the reflecting surface of the screen cannot be made into a very hard surface because of good optical performance, so the reflecting surface is a surface which is easy to damage actually), the phenomena that the audience, especially small children touch or scratch the screen carelessly, a cleaner directly touches the screen carelessly or sprays liquid on the screen when cleaning, a bug touches the screen and the like sometimes occur, and the phenomena that the screen is partially damaged often occur. If the damaged area is small and slight, omission is easily generated by adopting two common detection modes at present: 1, observing by using human eyes. The huge screen of hundreds of screens is easily overlooked to slightly impaired phenomena, including differences in human vision which can lead to significant differences in observations. And 2, fixing a camera near the projection window of the projector. For large screens, the camera can be far from the screen (typically up to tens of meters), plus the screen is large, so objective limitations on the technical conditions are also likely to result in omissions. The invention is therefore replaced by the following method: the detection device which can move along the horizontal direction or along the vertical direction or can move along the horizontal direction and the vertical direction simultaneously detects the screen to obtain the corresponding screen optical parameters. The detecting device can detect 1 to 6 parameters of the brightness coefficient, the brightness distribution uniformity of the screen, the effective scattering angle, the contrast, the color reduction performance and the color temperature difference of the screen. If necessary, the detection device also comprises a light generating device or an image projecting device, so that the short-distance clear projection of the image can be directly carried out on the screen. The benefits of this alternative approach are: the detecting device can be located close to the screen, for example, less than one meter, and then can move along the side of the screen (can move along the horizontal direction or can move along the vertical direction or can move along both the horizontal direction and the vertical direction), so that detection observation can be carried out at the position less than one meter away from each point of the huge screen if necessary, and high-quality and non-leakage detection can be easily achieved by using the existing camera or an optical probe capable of detecting 1 to 6 parameters of the brightness coefficient, the uniformity of the brightness distribution of the screen, the effective scattering angle, the contrast, the color reduction performance and the color temperature difference of the screen. With high-quality and non-exhaustive detection, high-quality and accurate (non-exhaustive) analysis and analysis results can be obtained.

In addition, if the screen is damaged, the existing solution is to replace the whole huge screen. If the screen is slightly damaged, the whole giant screen is replaced, which causes huge resource waste, huge workload and huge cost loss. Since movie theaters often have a first row of screens at a distance of about 5 to 10 meters, the larger the screen, the greater the distance between the screen and the first row. At the distance, human eyes cannot feel or feel very little about well-processed tiny patchwork traces, and the current screen surface particles become thinner and smaller than the screen surface particles in the past (many screens with a microcrystalline structure or a nano structure are already a multilayer microcrystalline screen or a multilayer microcrystalline screen comprising a substrate layer, a crystal arrangement layer, a crystal dense superposition layer, a coating angle light-gathering layer, a crystal gain spraying layer, an individual crystal gain structure layer, a reflection gain layer and a surface protection layer), so that the local damage of the screen is repaired in an automatic repairing mode innovatively. The automatic spraying maintenance is carried out on the abnormal area of the screen surface by adopting an automatic spraying device which can move along the horizontal direction and the vertical direction (the automatic spraying device is provided with a horizontal direction moving motor, a vertical direction moving motor, a motion control module, a spraying raw material, a heating mechanism, a pressure mechanism and a nozzle). The material and structure of the spraying raw material are the same as those of the original screen reflecting layer raw material. The heating mechanism is used for heating to generate flowability, the pressure mechanism is used for pressurizing to provide flowing power, when the movable screen reflection layer moves to a corresponding position, the nozzle is opened, and the material which is the same as the material of the original giant screen reflection layer is sprayed to the surface of the damaged area, so that the slightly damaged area is automatically repaired (if necessary, the same procedure of manufacturing the original screen reflection layer including repeated spraying can be adopted).

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. An automatic screen processing method is characterized by comprising the following steps:

A. the detection device which can move along the horizontal direction or along the vertical direction or can move along the horizontal direction and the vertical direction simultaneously detects the screen to obtain corresponding screen optical parameters;

2. The method as claimed in claim 1, wherein the detecting device is capable of detecting 1 to 6 parameters selected from a brightness coefficient, a uniformity of brightness distribution of the screen, an effective scattering angle, a contrast ratio, a color reproducibility, and a color temperature difference of the screen.

3. The automatic screen processing method according to claim 2, wherein: the detection device also comprises a light generating device or an image projecting device.

4. The automatic screen processing method according to claim 3, wherein: the automatic spraying device comprises a horizontal direction moving motor, a vertical direction moving motor, a motion control module, spraying raw materials, a heating mechanism, a pressure mechanism and a nozzle.

5. The automatic screen processing method according to claim 4, wherein: the material and structure of the spraying raw material are the same as those of the original screen reflecting layer raw material.