A composite grating preparation device and method

Abstract

The present invention discloses a composite grating preparation device and method, and relates to the composite grating preparation technical field. It comprises a first branch provided with a first complementary molding mechanism, a re-transfer molding mechanism and a first stripping mechanism in sequence, and a second branch provided with a second complementary molding mechanism and a strippable adhesive layer molding mechanism, the first branch and the second branch merge into a main path through a composite molding mechanism, and a second stripping mechanism and a composite grating winding roller are also provided on the main path. The high-precision preparation of the composite grating is achieved by the first complementary molding mechanism, the re-transfer molding mechanism, the second complementary molding mechanism and the composite molding mechanism, the accuracy of the grating period and the uniformity of the material combination are ensured, the subtle differences in the grating structure caused by insufficient preparation accuracy are reduced, and the optical performance of the composite grating is improved; the proposed new composite grating production method solves the problem that the current composite grating is difficult to prepare accurately and efficiently, and the preparation efficiency and preparation yield are significantly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of composite grating preparation, and in particular to a composite grating preparation device and method. Background Art

[0002] Against the backdrop of the rapid development of optical technology, 3D gratings, as a key type of optical component, play a vital role in multiple high-tech fields such as spectral analysis, optical communications, and optical sensing. In spectrometers, 3D gratings, with their unique spectroscopic capabilities, provide researchers with accurate spectral information. In the field of optical communications, they are the core components of wavelength division multiplexing technology, ensuring efficient and accurate transmission of information in optical fiber networks. However, with the continuous improvement of performance requirements for optical systems, traditional single-structure gratings have been unable to meet increasingly complex application requirements.

[0003] As a new type of optical element that integrates multiple grating characteristics, composite gratings can not only present different grating periods, but also combine different material properties, thereby providing a broader design space while realizing more complex optical functions. For example, by adjusting the grating period and material combination, composite gratings can achieve more efficient spectral separation within a specific wavelength range, or provide higher wavelength division multiplexing density in optical communication systems.

[0004] However, although composite gratings have many advantages in theory, their preparation process faces many challenges. Existing preparation equipment and technology often make it difficult to accurately and efficiently prepare high-quality composite gratings. On the one hand, insufficient preparation precision leads to subtle differences in the grating structure, which in turn affects its optical performance; on the other hand, the complex preparation process not only increases production costs, but also makes it difficult to stably control the quality of the finished product.

[0005] Based on this, the applicant proposed a composite grating preparation device and method to solve the above technical problems. Summary of the invention

[0006] The present invention aims at addressing the deficiencies in the prior art and provides a composite grating preparation device and method.

[0007] The present invention is solved by the following technical solutions:

[0008] A composite grating preparation device comprises a first branch circuit which is provided with a first complementary molding mechanism, a re-transfer molding mechanism and a first peeling mechanism in sequence, and a second branch circuit which is provided with a second complementary molding mechanism and a peelable adhesive layer molding mechanism. The first branch circuit and the second branch circuit are merged into a main circuit through the composite molding mechanism. The main circuit is also provided with a second peeling mechanism and a composite grating winding roller in sequence.

[0009] Preferably, the first complementary molding mechanism comprises a first substrate molding film discharge roller, a first glue dispensing device and a first grating engraving mold roller which are arranged in sequence, and a first curing device is arranged below the first grating engraving mold roller.

[0010] Preferably, the re-transfer molding mechanism comprises a second glue dispensing device, a substrate transfer film discharge roller, a first pressing roller and a second curing device which are arranged in sequence, and there are two first pressing rollers in total and they are arranged vertically.

[0011] Preferably, the first peeling mechanism comprises a first peeling roller and a first peeling recovery roller, and the first substrate molding film is rolled up by the first peeling recovery roller after passing through the first peeling roller.

[0012] Preferably, the second complementary molding mechanism comprises a second substrate molding film discharge roller, a third glue dispensing device and a second grating engraving mold roller which are arranged in sequence, and a third curing device is arranged below the second grating engraving mold roller.

[0013] Preferably, the first grating engraved mold roller and the second grating engraved mold roller are both copper-plated metal rollers.

[0014] Preferably, the peelable adhesive layer forming mechanism comprises a fifth glue dispensing device and a third grating engraved mold roller which are arranged in sequence, and a fifth curing device is arranged below the third grating engraved mold roller.

[0015] Preferably, the composite molding mechanism includes a fourth glue dispensing device, a second lamination roller and a fourth curing device which are arranged in sequence, and the second lamination rollers are 2 in total and arranged vertically. A tension adjustment roller and an image recognition processing unit are also arranged in sequence between the fourth glue dispensing device and the second lamination roller, and the tension adjustment roller is connected to the first peeling mechanism through a substrate transfer film.

[0016] Preferably, the second peeling mechanism includes a second peeling roller and a second peeling recovery roller. After the second substrate molding film and the substrate transfer film pass through the composite molding mechanism at the same time, the substrate transfer film is peeled off by the second peeling roller and wound up by the second peeling recovery roller, and the second substrate molding film is wound up by the composite grating winding roller.

[0017] Preferably, it also includes a UV ultraviolet modification device, which includes a first UV ultraviolet modification device, a second UV ultraviolet modification device and a third UV ultraviolet modification device, the first UV ultraviolet modification device is arranged between the first complementary molding mechanism and the re-transfer molding mechanism, the second UV ultraviolet modification device is arranged between the first stripping mechanism and the composite molding mechanism, and the third UV ultraviolet modification device is arranged between the second complementary molding mechanism and the strippable adhesive layer molding mechanism.

[0018] Preferably, the second UV ultraviolet modification device and the third UV ultraviolet modification device are both slit UV modification devices, and the wavelength thereof is 405 nm.

[0019] A method for preparing a composite grating comprises the following steps:

[0020] Step A: The first substrate forming film unloading roller unloads the first substrate forming film by roll-to-roll, and after being glued by a first glue dispensing device, formed by a first grating engraving mold roller, and cured by a first curing device, the first grating pattern is manufactured to form a complementary structure of the first grating pattern;

[0021] Step B: a first UV ultraviolet modification device performs UV modification on the complementary structure of the first grating pattern;

[0022] Step C: the second glue dispensing device dispenses glue on the complementary structure of the first grating pattern, the substrate transfer film unloading roller unloads the substrate transfer film, and the first pressing roller and the second curing device are pressed and cured to transfer the complementary structure of the first grating pattern to form a first grating pattern structure;

[0023] Step D: the first peeling roller separates the first substrate forming film from the substrate transfer film, and the first peeling recovery roller recovers the first substrate forming film;

[0024] Step E: a second UV modification device performs local modification on the first grating texture structure;

[0025] Step F: The second substrate forming film unloading roller unloads the second substrate forming film through roll-to-roll, passes through a third dispensing device, a second grating engraving mold roller, and a third curing device, and then manufactures a second grating pattern structure;

[0026] Step G: The third UV ultraviolet modification device performs UV local modification on the second grating texture structure;

[0027] Step H: After the second grating texture structure is glued by the fifth glue dispensing device, roller-formed by the third grating engraving mold, and cured by the fifth curing device, a peelable glue layer is formed thereon;

[0028] Step I: the fourth glue dispensing device dispenses glue on the surface of the second grating texture structure after the peelable glue layer is formed, and the image recognition processing unit cooperates with the tension adjustment roller and the second pressing roller to detect and align the first grating texture structure and the second grating texture structure after the peelable glue layer is formed;

[0029] Step J: After alignment and pressing, the composite grating is cured by the fourth curing device. After the curing is completed, the peelable adhesive layer is peeled off along with the substrate transfer film by the second peeling roller and recovered by the second peeling recovery roller. At the same time, the composite grating is rolled up by the composite grating winding roller to complete the roll-to-roll preparation of the composite grating.

[0030] The beneficial effects of the present invention are:

[0031] 1. Significantly improve the preparation accuracy: Through the finely designed first complementary molding mechanism, re-transfer molding mechanism, second complementary molding mechanism and composite molding mechanism, the present invention can achieve high-precision preparation of the composite grating structure. The close cooperation and precise control between the mechanisms ensure the accuracy of the grating period and the uniformity of the material combination, thereby greatly reducing the subtle differences in the grating structure caused by insufficient preparation accuracy and improving the optical performance of the composite grating.

[0032] 2. Optimize the preparation process and reduce costs: The preparation device of the present invention adopts an automated and intelligent design, making the preparation process smoother and more efficient. Compared with traditional complex manual operations or inefficient mechanical equipment, the present invention can significantly simplify the preparation process and reduce production costs. At the same time, by accurately controlling the parameters in the molding and curing process, the scrap rate is reduced, further reducing the production cost. At the same time, the new composite grating production method proposed solves the problem that the composite grating is difficult to prepare accurately and efficiently. Through this method, the preparation efficiency and preparation yield are significantly improved, which is more suitable for promotion;

[0033] 3. Improve the quality stability of finished products: The UV ultraviolet modification device in the present invention can partially modify the grating texture and enhance the optical properties of the composite grating. In addition, the alignment and pressing technology of the image recognition processing unit ensures the precise alignment of the first grating texture structure and the second grating texture structure after UV modification, thereby improving the quality stability of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the composite grating preparation device of the present invention.

[0036] Figure 2 It is a schematic diagram of the complementary structure of the first grating pattern obtained by the composite grating preparation method of the present invention.

[0037] Figure 3 It is a schematic diagram of a first grating texture structure formed by transferring the complementary structure of the first grating texture through the composite grating preparation method of the present invention.

[0038] Figure 4 It is a schematic diagram of a second grating texture structure obtained by the composite grating preparation method of the present invention.

[0039] Figure 5 It is a schematic diagram of a peelable adhesive layer formed by the composite grating preparation method of the present invention.

[0040] Figure 6 It is a schematic diagram of the alignment and pressing process in the composite grating preparation method of the present invention.

[0041] Figure 7 It is a schematic diagram of a composite grating prepared by the composite grating preparation method of the present invention.

[0042] In the figure: 101, a first substrate forming film feeding roller, 102, a first glue dispensing device, 103, a first grating engraving mold roller, 104, a first curing device, 105, a first UV ultraviolet modification device, 106, a second glue dispensing device, 107, a substrate transfer film feeding roller, 108, a first pressing roller, 109, a second curing device, 110, a first peeling roller, 111, a first peeling recovery roller, 112, a second UV ultraviolet modification device, 113, a second substrate forming film feeding roller, 114, a first Three glue dispensing devices, 115, second grating engraving mold roller, 116, third curing device, 117, fourth glue dispensing device, 118, tension adjustment roller, 119, image recognition processing unit, 120, second pressing roller, 121, fourth curing device, 122, second peeling roller, 123, second peeling recovery roller, 124, composite grating winding roller, 125, third UV ultraviolet modification device, 126, fifth glue dispensing device, 127, third grating engraving mold roller, 128, fifth curing device. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1: Figure 1 As shown, a composite grating preparation device of the present invention includes a first branch circuit provided with a first complementary molding mechanism, a re-transfer molding mechanism and a first peeling mechanism in sequence, and a second branch circuit provided with a second complementary molding mechanism and a peelable adhesive layer molding mechanism, the first branch circuit and the second branch circuit merge into a main circuit through a composite molding mechanism, and the main circuit is also provided with a second peeling mechanism and a composite grating winding roller 124 in sequence.

[0045] The first complementary molding mechanism includes a first substrate molding film discharge roller 101, a first glue dispensing device 102 and a first grating engraved mold roller 103 which are arranged in sequence. A first curing device 104 is arranged below the first grating engraved mold roller 103. The first grating engraved mold roller 103 is finely carved according to the first grating pattern parameters. The first grating engraved mold roller 103 can be a copper-plated metal roller.

[0046] The re-transfer molding mechanism includes a second glue dispensing device 106, a substrate transfer film feeding roller 107, a first pressing roller 108 and a second curing device 109 which are arranged in sequence. There are two first pressing rollers 108 which are arranged vertically.

[0047] The first peeling mechanism includes a first peeling roller 110 and a first peeling recovery roller 111 . The first substrate molding film passes through the first peeling roller 110 and is then rolled up by the first peeling recovery roller 111 .

[0048] The second complementary molding mechanism includes a second substrate molding film discharge roller 113, a third glue dispensing device 114 and a second grating engraved mold roller 115 which are arranged in sequence. A third curing device 116 is arranged below the second grating engraved mold roller 115. The second grating engraved mold roller 115 is finely carved according to the second grating pattern parameters. The second grating engraved mold roller 115 can be a copper-plated metal roller.

[0049] The peelable adhesive layer forming mechanism comprises a fifth adhesive dispensing device 126 and a third grating engraving mold roller 127 which are arranged in sequence, and a fifth curing device 128 is arranged below the third grating engraving mold roller 127 .

[0050] The composite molding mechanism includes a fourth glue dispensing device 117, a second laminating roller 120 and a fourth curing device 121 which are arranged in sequence. There are two second laminating rollers 120 which are arranged vertically. A tension adjustment roller 118 and an image recognition processing unit 119 are arranged in sequence between the fourth glue dispensing device 117 and the second laminating roller 120. The tension adjustment roller 118 is connected to the first peeling mechanism through a substrate transfer film.

[0051] The second peeling mechanism includes a second peeling roller 122 and a second peeling recovery roller 123. After the second substrate molding film and the substrate transfer film pass through the composite molding mechanism at the same time, the substrate transfer film is peeled off by the second peeling roller 122 and wound up by the second peeling recovery roller 123, and the second substrate molding film is wound up by the composite grating winding roller 124.

[0052] It also includes a UV ultraviolet modification device, which can perform UV modification on the grating surface structure, shield the molecular groups on the surface, make it have no adhesion with similar substances or glue of the same nature after curing, and can be easily peeled off. The UV ultraviolet modification device includes a first UV ultraviolet modification device 105, a second UV ultraviolet modification device 112 and a third UV ultraviolet modification device 125. The second UV ultraviolet modification device 112 and the third UV ultraviolet modification device 125 are both slit UV modification devices, which can perform local modification on a specific grating texture area, and the wavelength is 405nm. The first UV ultraviolet modification device 105 is arranged between the first complementary molding mechanism and the re-transfer molding mechanism, the second UV ultraviolet modification device 112 is arranged between the first peeling mechanism and the composite molding mechanism, and the third UV ultraviolet modification device 125 is arranged between the second complementary molding mechanism and the peelable adhesive layer molding mechanism.

[0053] like Figures 1 to 7 As shown, a method for preparing a composite grating comprises the following steps:

[0054] Step A: The first substrate forming film unloading roller 101 unloads the first substrate forming film by roll-to-roll, and after being glued by the first glue dispensing device 102, formed by the first grating engraving mold roller 103, and cured by the first curing device 104, the first grating pattern is manufactured to form a complementary structure of the first grating pattern;

[0055] Step B: The first UV ultraviolet modification device 105 performs UV modification on the complementary structure of the first grating pattern, and after the modification, the structure has no adhesion to the glue and can be easily peeled off;

[0056] Step C: The second glue dispensing device 106 dispenses glue on the complementary structure of the first grating pattern, and the substrate transfer film feeding roller 107 discharges the substrate transfer film, which is pressed and cured by the first pressing roller 108 and the second curing device 109, and the complementary structure of the first grating pattern is transferred to form a first grating pattern structure;

[0057] Step D: the first peeling roller 110 separates the first substrate forming film from the substrate transfer film, and the first peeling recovery roller 111 recovers the first substrate forming film;

[0058] Step E: the second UV modification device 112 performs local modification on the first grating texture structure;

[0059] Step F: The second substrate forming film feeding roller 113 feeds the second substrate forming film by roll-to-roll feeding, and after passing through the third dispensing device 114, the second grating engraving mold roller 115, and the third curing device 116, the second grating texture structure is manufactured;

[0060] Step G: The third UV ultraviolet modification device 125 performs UV local modification on the second grating texture structure;

[0061] Step H: After the second grating pattern structure is glued by the fifth glue dispensing device 126, formed by the third grating engraving mold roller 127, and cured by the fifth curing device 128, a removable glue layer similar to a mask is formed thereon;

[0062] Step I: The fourth glue dispensing device 117 dispenses glue on the surface of the second grating texture structure after the peelable glue layer is formed, and the image recognition processing unit 119 cooperates with the tension adjustment roller 118 and the second pressing roller 120 to detect and align the first grating texture structure and the second grating texture structure after the peelable glue layer is formed, and the peelable glue layer can prevent glue leakage during the pressing process;

[0063] Step J: After alignment and lamination, the composite grating is cured by the fourth curing device 121. After the curing is completed, the peelable adhesive layer is peeled off along with the substrate transfer film by the second peeling roller 122 and recovered by the second peeling recovery roller 123. At the same time, the composite grating is rolled up by the composite grating winding roller 124 to complete the roll-to-roll preparation of the composite grating.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composite grating preparation device, characterized in that: It comprises a first branch line provided with a first complementary molding mechanism, a re-transfer molding mechanism and a first peeling mechanism in sequence, and a second branch line provided with a second complementary molding mechanism and a peelable adhesive layer molding mechanism, wherein the first branch line and the second branch line merge into a main line through a composite molding mechanism, and the main line is also provided with a second peeling mechanism and a composite grating winding roller (124) in sequence; The first complementary molding mechanism comprises a first glue dispensing device (102) and a first grating engraving mold roller (103); the re-transfer molding mechanism comprises a second glue dispensing device (106) and a first pressing roller (108); The second complementary molding mechanism comprises a third glue dispensing device (114) and a second grating engraved mold roller (115); the peelable adhesive layer molding mechanism comprises a fifth glue dispensing device (126) and a third grating engraved mold roller (127) which are arranged in sequence; The composite molding mechanism comprises a fourth glue dispensing device (117), a second pressing roller (120) and a fourth curing device (121); It also includes a UV ultraviolet modification device, which is used to modify the complementary structure of the first grating texture, the first grating texture structure and the second grating texture structure.

2. The composite grating preparation device according to claim 1, characterized in that: The first complementary molding mechanism further comprises a first substrate molding film discharge roller (101), and a first curing device (104) is arranged below the first grating engraving mold roller (103).

3. The composite grating preparation device according to claim 1, characterized in that: The re-transfer molding mechanism further comprises a substrate transfer film discharge roller (107), a second curing device (109), and two first lamination rollers (108) are arranged vertically.

4. The composite grating preparation device according to claim 1, characterized in that: The first peeling mechanism comprises a first peeling roller (110) and a first peeling recovery roller (111), and the first substrate molding film is rolled up by the first peeling recovery roller (111) after passing through the first peeling roller (110).

5. The composite grating preparation device according to claim 1, characterized in that: The second complementary molding mechanism also includes a second substrate molding film discharge roller (113), and a third curing device (116) is arranged below the second grating engraving mold roller (115).

6. The composite grating preparation device according to claim 1, characterized in that: There are two second lamination rollers (120) arranged vertically, and a tension adjustment roller (118) and an image recognition processing unit (119) are arranged in sequence between the fourth glue dispensing device (117) and the second lamination roller (120), and the tension adjustment roller (118) is connected to the first peeling mechanism via a substrate transfer film.

7. The composite grating preparation device according to claim 1, characterized in that: The second peeling mechanism comprises a second peeling roller (122) and a second peeling recovery roller (123). After the second substrate forming film and the substrate transfer film pass through the composite forming mechanism at the same time, the substrate transfer film is peeled off by the second peeling roller (122) and is wound up by the second peeling recovery roller (123), and the second substrate forming film is wound up by the composite grating winding roller (124).

8. The composite grating preparation device according to claim 1, characterized in that: The UV ultraviolet modification device comprises a first UV ultraviolet modification device (105), a second UV ultraviolet modification device (112) and a third UV ultraviolet modification device (125); the first UV ultraviolet modification device (105) is arranged between the first complementary molding mechanism and the retransfer molding mechanism; the second UV ultraviolet modification device (112) is arranged between the first stripping mechanism and the composite molding mechanism; and the third UV ultraviolet modification device (125) is arranged between the second complementary molding mechanism and the strippable adhesive layer molding mechanism.

9. The composite grating preparation device according to claim 1, characterized in that: A fifth curing device (128) is arranged below the third grating engraving mold roller (127).

10. A method for preparing a composite grating using the composite grating preparation device according to any one of claims 1 to 9, characterized in that: It includes the following steps: Step A: a first substrate forming film unloading roller (101) unloads the first substrate forming film in a roll-to-roll manner, and after being glued by a first glue dispensing device (102), formed by a first grating engraving mold roller (103), and cured by a first curing device (104), a first grating pattern is produced to form a complementary structure of the first grating pattern; Step B: a first UV ultraviolet modification device (105) performs UV modification on the complementary structure of the first grating pattern; Step C: the second glue dispensing device (106) dispenses glue on the complementary structure of the first grating pattern, the substrate transfer film feeding roller (107) discharges the substrate transfer film, and the substrate transfer film is pressed and cured by the first pressing roller (108) and the second curing device (109), and the complementary structure of the first grating pattern is transferred to form a first grating pattern structure; Step D: the first peeling roller (110) separates the first substrate forming film from the substrate transfer film, and the first peeling recovery roller (111) recovers the first substrate forming film; Step E: a second UV ultraviolet modification device (112) performs local modification on the first grating texture structure; Step F: the second substrate forming film unloading roller (113) unloads the second substrate forming film by roll-to-roll, passes through the third glue dispensing device (114), the second grating engraving mold roller (115), and the third curing device (116), and then manufactures the second grating texture structure; Step G: The third UV ultraviolet modification device (125) performs UV local modification on the second grating texture structure; Step H: After the second grating pattern structure is glued by the fifth glue dispensing device (126), formed by the third grating engraving mold roller (127), and cured by the fifth curing device (128), a peelable glue layer is formed thereon; Step I: the fourth glue dispensing device (117) dispenses glue on the surface of the second grating texture structure after the peelable glue layer is formed, and the image recognition processing unit (119) cooperates with the tension adjustment roller (118) and the second pressing roller (120) to detect and align the first grating texture structure and the second grating texture structure after the peelable glue layer is formed; Step J: After alignment and lamination, the composite grating is cured by the fourth curing device (121). After the curing is completed, the peelable adhesive layer is peeled off along with the substrate transfer film by the second peeling roller (122) and recovered by the second peeling recovery roller (123). At the same time, the composite grating is rolled up by the composite grating winding roller (124), thereby completing the roll-to-roll preparation of the composite grating.

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