CN117233873A - Manufacturing method of separable lens module of LED display screen of all-in-one machine and display screen - Google Patents
Manufacturing method of separable lens module of LED display screen of all-in-one machine and display screen Download PDFInfo
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- CN117233873A CN117233873A CN202311498843.4A CN202311498843A CN117233873A CN 117233873 A CN117233873 A CN 117233873A CN 202311498843 A CN202311498843 A CN 202311498843A CN 117233873 A CN117233873 A CN 117233873A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 description 22
- 230000000694 effects Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Abstract
The invention provides a manufacturing method of a separable lens module of an LED display screen of an integrated machine, which comprises the following steps: s1, determining display parameters of an LED display screen of the all-in-one machine; s2, determining a beam angle parameter and a beam uniformity parameter of an LED display screen of the all-in-one machine; s3, determining the radius and focal length of the lens element; s4, selecting a lens element material; s5, preparing a lens module mould; s6, heating the lens element material to a molten state on an injection molding machine, injecting the lens element material in the molten state into a lens module mold, and then cooling the lens module mold to obtain a lens module; s7, carrying out surface treatment on the lens module; s8, manufacturing the separable lens module. The invention also provides an LED display screen of the all-in-one machine.
Description
Technical Field
The invention belongs to the field of LED display devices of all-in-one machines, and particularly relates to a manufacturing method of a separable lens module of an LED display screen of an all-in-one machine and the display screen.
Background
Along with the birth of the integrated machine LED display device, the integrated machine LED display device has been increasingly applied to key occasions such as command center halls, control rooms, conference centers and the like by virtue of the advantages of real seamless splicing, high cost performance, outstanding color reproduction capability, nearly perfect display effect and the like. In different use occasions, the requirements of the visual resolution of the LED display screen of the all-in-one machine are met, the display effect and the visual quality are ensured, the matching and the selection of the lens module array are required to be fully considered, and the influence of the target viewing distance and the visual angle on the visual resolution is required to be met.
The lens element generally refers to a single lens in a lens system, the lens module is an optical element capable of focusing or scattering light to change the propagation direction and characteristics of the light, a plurality of lens elements with the same optical characteristics and physical dimensions form the lens module, and a plurality of lens modules are arranged in an array to form a display screen.
The lens module of the LED display screen of the all-in-one machine is used for determining the shape of the lens element and the lens material according to the pixel density, the visual distance and the visual angle of a specific display screen, so that the light is ensured to be projected to the correct position. For the LED display screen of the all-in-one machine, a narrower light beam is usually required to avoid overlapping and diffusion of light rays, and meanwhile, uniform distribution of the light rays is ensured to avoid uneven brightness or shadows on the LED display screen of the all-in-one machine. The diameter of the lens element is related to the resolution, the visual angle and the coverage pixel number of the LED display screen of the all-in-one machine, when the aperture of the lens element is increased, the resolution of an image is reduced, the visual angle is increased, and the number of pixels contained in the lens element is increased; on the contrary, when the aperture of the lens element is increased, the resolution of the image is increased, the viewing angle is reduced, the viewing effect is improved, and the number of pixels contained in the lens element is increased. On the other hand, the focal length of the lens element determines the image depth of the LED display screen of the all-in-one machine, when the focal length of the lens element is increased, the viewing distance can be increased, but the distance between the LED display screen of the all-in-one machine and the lens module is also increased, and thus, the pixels at the inner edge of the lens element can cause crosstalk to influence the viewing effect. Conversely, reducing the focal length of the lens element can greatly reduce crosstalk, but the viewing distance becomes smaller and dispersion occurs.
Therefore, parameters of the lens module of the LED display screen of the all-in-one machine are not independent, and have a mutual influence relationship, the LED display screen of the existing all-in-one machine adopts a fixed packaging mode of the LED module and the lens module, the optimal visual distance and visual angle after packaging are fixed, and a viewer is required to adapt to the display screen in order to obtain good appearance. The optical performance and the stability of the system are ensured through the separable LED display screen lens module, the visual requirements on the LED integrated machine display screen under the requirements of different visual distances and visual angles are met, and meanwhile, the system has the flexibility and maintainability.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a manufacturing method of a separable lens module of an LED display screen of an all-in-one machine and the display screen, which are used for realizing better display effect and visual quality under the conditions of different visual distances, visual angles and resolutions of the LED display screen of the all-in-one machine, and meanwhile, the separable design enables the LED module and the lens module to be flexibly combined and replaced according to specific requirements so as to adapt to different application scenes.
In order to achieve the above object, according to a first aspect of the present invention, there is provided a method for manufacturing a separable lens module of an LED display of an integrated machine, comprising:
s1, determining display parameters of an LED display screen of the all-in-one machine;
s2, determining a beam angle parameter and a beam uniformity parameter of an LED display screen of the all-in-one machine;
s3, determining the radius and focal length of the lens element;
s4, selecting a lens element material;
s5, preparing a lens module mould;
s6, heating the lens element material to a molten state on an injection molding machine, injecting the lens element material in the molten state into a lens module mold, and then cooling the lens module mold to obtain a lens module;
s7, carrying out surface treatment on the lens module;
s8, manufacturing the separable lens module.
As a further description of the above scheme: in the step S1, display parameters of the LED display screen of the all-in-one machine include: the LED display screen of the all-in-one machine comprises the size of the LED display screen of the all-in-one machine, the installation height of the LED display screen of the all-in-one machine, the watching distance of the LED display screen of the all-in-one machine and the pixel size of the LED display screen of the all-in-one machine.
As a further description of the above scheme: the step S2 further includes:
step S21, beam angleThe determination is made according to the following formula:
step S22, beam homogeneityThe determination is made according to the following formula:
wherein,the LED display screen mounting height of the integrated machine is high,
the height of the LED display screen of the all-in-one machine is taken as a unit of pixels,
is the watching distance of the LED display screen of the all-in-one machine,
is the width of the LED display screen of the all-in-one machine by taking pixels as units,
the pixel size of the LED display screen of the all-in-one machine.
As a further description of the above scheme: the step S3 further includes:
step S31, radius of lens elementThe determination is made according to the following formula:
wherein,for the radius of the lens element +.>Covering the pixel values for the lens elements;
step S32, focal length of lens elementThe determination is made according to the following formula:
wherein,the light wavelength of the LED display screen light source of the all-in-one machine is obtained.
As a further description of the above scheme: the step S5 further includes:
step S51, radius of curvature of the lens elementThe determination is made according to the following formula:
wherein,refractive index of the lens element material;
step S52, determining the diameter of the circumscribed circle of the lens element according to the shape of the lens elementAnd spherical cap height +.>。
As a further description of the above scheme: the step S52 further includes:
step S521, when the lens elements are round and closely arranged, the diameter of the circumscribed circle of the lens elementsAnd spherical cap height +.>The determination is carried out according to the following formulas:
，
。
as a further description of the above scheme: the step S52 further includes:
step S522, when the lens element shape is an even-numbered polygon, the diameter of the circumscribed circle of the lens element is as small as possibleAnd spherical cap height +.>The determination is carried out according to the following formulas:
，
，
wherein,is the number of sides of the lens element, and takes on an even positive value, for example, 4,6,8, etc.
As a further description of the above scheme: the step S7 includes: polishing or coating an anti-reflection coating on the surface of the lens module.
In a second aspect of the present invention, an integrated LED display screen is provided, including a plurality of separable lens modules arranged in an array and manufactured by the above manufacturing method.
As a further description of the above scheme: the LED display module is characterized by further comprising a detachable fixed connection structure and a positioning structure, wherein the detachable lens module is tightly connected with the LED display module through the detachable fixed connection structure and is placed on the LED display module, and the positioning structure is used for positioning the position relationship between the detachable lens module and the LED display module when the detachable lens module is stacked.
The manufacturing method of the separable lens module of the LED display screen of the all-in-one machine and the display screen are used for realizing better display effect and visual quality under the conditions of different visual distances, visual angles and resolutions of the LED display screen of the all-in-one machine, and meanwhile, the LED module and the lens module can be flexibly combined and replaced according to specific requirements by the separable design so as to adapt to different application scenes.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for manufacturing a separable lens module of an integrated machine LED display screen;
FIG. 2 is a diagram showing the relationship among the size, the mounting height and the beam angle of an LED display screen of an all-in-one machine;
fig. 3 is a schematic diagram of lens parameters of a detachable lens module of an integrated LED display screen according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, in a first aspect of the present invention, a method for manufacturing a separable lens module of an LED display screen of an integrated machine is provided, including:
s1, determining display parameters of an LED display screen of the all-in-one machine;
optionally, the display parameters of the integrated machine LED display screen include the size of the integrated machine LED display screen, the installation height of the integrated machine LED display screen, the viewing distance of the integrated machine LED display screen, the pixel size of the integrated machine LED display screen, and the like.
Optionally, the dimensions of the all-in-one LED display screen include the width and height of the all-in-one LED display screen, wherein,representing the width of the LED display screen of the all-in-one machine in pixels, < >>Representing the height of the LED display screen of the all-in-one machine in pixels, < >>Indicating the installation height of an LED display screen of the all-in-one machine, < + >>Representing the viewing distance of the LED display screen of the all-in-one machine, < >>And the pixel size of the LED display screen of the all-in-one machine is represented.
S2, determining the beam angle parameter and the beam uniformity parameter required by the LED display screen of the all-in-one machine according to the display parameters of the LED display screen.
Wherein,indicating the angle of the beam>Indicating beam uniformity.
Referring to fig. 2, optionally, the method further includes:
step S21, beam angleThe determination is made according to the following formula:
(equation I)
Step S22, beam homogeneityThe determination is made according to the following formula:
(equation II)
S3, optical design is carried out according to the required beam angle, beam uniformity and pixel value covering requirement of the lens element, and the radius and focal length of the lens element are determined.
Optionally, the number of the covering pixels of the lens element may be set according to actual needs, for example: the maximum coverage of the lens element is one pixel, and the maximum coverage of the lens element is five pixels.
Referring to fig. 3, optionally, the method further includes:
step S31, radius of lens elementThe determination is made according to the following formula:
(equation three)
Wherein,is a lensRadius of element->Covering the pixel values for the lens elements;
step S32, focal length of lens elementThe determination is made according to the following formula:
(equation IV)
Wherein,the light wavelength of the light source of the LED display screen of the all-in-one machine.
S4, selecting a lens element material;
alternatively, the choice of the lens element material may be based on the requirements of the optical transparency, refractive index and wear resistance of the lens element.
Optionally, the light transmittance, refractive index and wear resistance of the lens element may be set according to actual requirements.
S5, preparing a lens module mould according to the lens element material and the lens element parameters so as to ensure that the shape and the size of the lens module mould are consistent with the design;
optionally, this step further includes:
step S51, radius of curvature of the lens elementThe determination is made according to the following formula:
(equation five)
Wherein,refractive index of the lens element material;
step S52, determining the diameter of the circumscribed circle of the lens element according to the selected shape of the lens elementAnd spherical cap height +.>。
Alternatively, the lens element shape may be a circle or an even-positive polygon, and the lens elements are closely arranged.
Optionally, the method further comprises: step S521, when the lens elements are round and closely arranged, the diameter of the circumscribed circle of the lens elementsAnd spherical cap height +.>The determination is made according to the following two formulas:
(equation six)
(equation seven)
Step S522, when the spherical lenses of the positive even polygons of the lens element shape are closely arranged, the diameter of the circumscribed circle of the lens elementAnd spherical cap height +.>The determination is carried out according to the following formulas:
(equation eight)
(equation nine)
Wherein,is the number of sides of the lens element, e.g.,when the shape of the lens element is regular hexagon, < >>。
Optionally, according to the lens element parameters obtained in the above steps, the lens element mold is processed, and then according to actual requirements, the lens element molds are arranged in an array to form a lens module mold for production, so that the lens module is produced by the mold, and the production efficiency can be greatly improved.
S6, heating the lens element material to a molten state on an injection molding machine, injecting the lens element material in the molten state into a lens module mold, and then cooling the lens module mold to enable the lens module to be solidified and ensure that the lens module maintains a required shape, thus obtaining the lens module.
S7, carrying out surface treatment, polishing or coating an anti-reflection coating on the lens module to improve the optical performance;
s8, manufacturing the separable lens module capable of being used in a modularized mode.
The invention provides an integrated LED display screen, which comprises a plurality of separable lens modules which are arranged in an array and are manufactured by the method, and further comprises a separable fixed connection structure and a positioning structure, wherein the separable lens modules are tightly connected with the LED display module through the separable fixed connection structure and are placed on the LED display module, and the positioning structure is used for positioning the position relationship between the separable lens modules and the LED display module when the separable lens modules are stacked.
Optionally, the detachable fixed connection structure is a double-slideway fixed frame or a connecting bolt.
Optionally, the connecting bolt is also provided with a flexible rubber sleeve, and the angle relation between the separable lens module and the LED display module can be adjusted in a small range through the tightness degree of the connecting bolt.
Optionally, the positioning structure is a positioning hole or a positioning bump.
The manufacturing method of the separable lens module of the LED display screen of the all-in-one machine and the display screen are used for realizing better display effect and visual quality under the conditions of different visual distances, visual angles and resolutions of the LED display screen of the all-in-one machine, and meanwhile, the LED module and the lens module can be flexibly combined and replaced according to specific requirements by the separable design so as to adapt to different application scenes.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (9)
1. The manufacturing method of the separable lens module of the LED display screen of the all-in-one machine is characterized by comprising the following steps:
s1, determining display parameters of an LED display screen of the all-in-one machine;
s2, determining a beam angle parameter and a beam uniformity parameter of an LED display screen of the all-in-one machine, and further comprising:
step S21, beam angleThe determination is made according to the following formula:
step S22, beam homogeneityThe determination is made according to the following formula:
wherein,the LED display screen mounting height of the integrated machine is high,
the height of the LED display screen of the all-in-one machine is taken as a unit of pixels,
is the watching distance of the LED display screen of the all-in-one machine,
is the width of the LED display screen of the all-in-one machine by taking pixels as units,
the pixel size of the LED display screen of the all-in-one machine;
s3, determining the radius and focal length of the lens element;
s4, selecting a lens element material;
s5, preparing a lens module mould;
s6, heating the lens element material to a molten state on an injection molding machine, injecting the lens element material in the molten state into a lens module mold, and then cooling the lens module mold to obtain a lens module;
s7, carrying out surface treatment on the lens module;
s8, manufacturing the separable lens module.
2. The method for manufacturing the detachable lens module of the LED display screen of the integrated machine according to claim 1, wherein in the step S1, the display parameters of the LED display screen of the integrated machine include: the LED display screen of the all-in-one machine comprises the size of the LED display screen of the all-in-one machine, the installation height of the LED display screen of the all-in-one machine, the watching distance of the LED display screen of the all-in-one machine and the pixel size of the LED display screen of the all-in-one machine.
3. The method for manufacturing the detachable lens module of the LED display screen of the integrated machine according to claim 1, wherein the step S3 further comprises:
step S31, radius of lens elementThe determination is made according to the following formula:
wherein,for the radius of the lens element +.>Covering the pixel values for the lens elements;
step S32, focal length of lens elementThe determination is made according to the following formula:
wherein,the light wavelength of the LED display screen light source of the all-in-one machine is obtained.
4. The method for manufacturing the detachable lens module of the LED display screen of the all-in-one machine according to claim 3, wherein the step S5 further comprises:
step S51, radius of curvature of the lens elementThe determination is made according to the following formula:
wherein,refractive index of the lens element material;
step S52, determining the diameter of the circumscribed circle of the lens element according to the shape of the lens elementAnd spherical cap height +.>。
5. The method for manufacturing the detachable lens module of the LED display screen of the all-in-one machine according to claim 4, wherein the step S52 further comprises:
step S521, when the lens elements are round and closely arranged, the diameter of the circumscribed circle of the lens elementsAnd spherical cap height +.>The determination is carried out according to the following formulas:
，
。
6. the method for manufacturing the detachable lens module of the LED display screen of the all-in-one machine according to claim 4, wherein the step S52 further comprises:
step S522, when the lens element shape is an even-numbered polygon and closely arranged, the diameter of the circumscribed circle of the lens elementAnd spherical cap height +.>The determination is carried out according to the following formulas:
，
，
wherein,is the number of sides of the lens element.
7. The method for manufacturing the detachable lens module of the LED display screen of the integrated machine according to claim 1, wherein the step S7 includes: polishing or coating an anti-reflection coating on the surface of the lens module.
8. An integrated LED display screen, comprising a plurality of separable lens modules arranged in an array and manufactured by the manufacturing method of the separable lens module of the integrated LED display screen according to any one of claims 1 to 7.
9. The integrated LED display screen of claim 8, further comprising a detachable fixed connection structure and a positioning structure, wherein the detachable lens module is tightly connected with the LED display module through the detachable fixed connection structure and is placed on the LED display module, and the positioning structure is used for positioning the positional relationship between the detachable lens module and the LED display module when stacked.
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