Optical power control method and system during optical path shaping

Abstract

The present invention relates to the field of optical communication technology, and discloses a method and system for controlling optical power during optical path shaping. The method comprises obtaining the distance and irradiation angle between the illumination lamp and the colloid of the lens to be cured; setting a plurality of gradient irradiation test schemes according to the distance and irradiation angle of the illumination lamp; performing a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain the light variables of each gradient irradiation test scheme; determining a target gradient irradiation test scheme based on the light variables; performing a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and using the target displacement amount as a pre-draw amount; and performing optical path shaping according to the target gradient irradiation test scheme and the pre-draw amount. In the present invention, by gradiently setting the illumination intensity and time and setting the pre-draw amount before coupling, the curing effect is ensured while reducing the stress generated during the glue curing process, thereby improving the coupling accuracy of the optical device production process.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to a method and system for controlling optical power during optical path shaping. Background Art

[0002] Optical devices are the core components of optical modules. The optical transmitter performs electrical-to-optical conversion. This involves processing an input electrical signal at a specific bit rate through an internal driver chip, which then drives a semiconductor laser (LD) to emit a modulated optical signal at the corresponding bit rate. The optical receiver performs optical-to-electrical conversion. This involves inputting an optical signal at a specific bit rate into the module, converting it into an electrical signal via a photodetector diode, and then outputting an electrical signal at the corresponding bit rate after passing through a preamplifier. The core technology of optical devices is optical path shaping, or coupling, and the core parameters are the coupled optical power and responsivity.

[0003] In the optical device production process, the coupling process has gradually become a bottleneck. The purpose of coupling is to focus the divergent light emitted by the semiconductor laser chip (chip) through a lens into a 9μm optical fiber, or to focus the divergent light emitted by the optical fiber onto the photosensitive surface of a photodetector chip (PDchip) of approximately 20μm. As optical devices develop towards higher bandwidth and higher speed, the requirements for optical power and responsivity accuracy are becoming increasingly stringent, and the coupling tolerance is also becoming smaller and smaller. For example, the coupling tolerance in the optical axis plane direction must be within 1μm. Therefore, the control requirements for optical power and responsivity during the process are also becoming increasingly stringent. Improving the coupling accuracy of optical device production processes has become an urgent problem to be solved.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide a method and system for controlling optical power during optical path shaping, aiming to solve the technical problem of low coupling accuracy in existing optical device production processes.

[0006] To achieve the above object, the present invention provides a method for controlling optical power during optical path shaping, the method comprising:

[0007] Obtain the distance between the light tube and the colloid of the lens to be cured and the irradiation angle;

[0008] Setting up several gradient irradiation test schemes according to the distance and irradiation angle of the light tube;

[0009] Performing a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme;

[0010] determining a target gradient illumination test plan based on the light variables;

[0011] Performing a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and using the target displacement amount as a pre-set amount;

[0012] Light path shaping is performed according to the target gradient irradiation test plan and the pre-withdrawal amount.

[0013] Optionally, the step of setting a plurality of gradient irradiation test schemes according to the distance and irradiation angle of the light tube includes:

[0014] Determining a light intensity threshold of the light tube according to the distance and illumination angle of the light tube;

[0015] A plurality of gradient illumination test plans are set based on the illumination intensity threshold, each of the gradient illumination test plans including gradient illumination light intensity and illumination time.

[0016] Optionally, before setting a plurality of gradient illumination test schemes based on the light intensity threshold, the method further includes:

[0017] Determine the total energy absorbed by the preset colloid according to the preset colloid curing requirements;

[0018] Accordingly, the step of setting a plurality of gradient illumination test schemes based on the light intensity threshold includes:

[0019] Setting a plurality of gradient irradiation test schemes based on the light intensity threshold and the preset colloid absorption total energy, each of the gradient irradiation test schemes including gradient irradiation light intensity and irradiation time;

[0020] The total energy absorbed by the irradiated colloid is determined according to the gradient irradiation light intensity and the irradiation time; wherein the total energy absorbed by the irradiated colloid is greater than or equal to the preset total energy absorbed by the colloid.

[0021] Optionally, performing a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme includes:

[0022] Coupling the lens to be cured to a curing position and then performing glue dispensing to obtain a first power value before curing;

[0023] Obtaining gradient irradiation light intensity and irradiation time according to the gradient irradiation test plan;

[0024] curing the colloid by the illumination lamp based on the gradient illumination light intensity and the illumination time to obtain a second power value after curing;

[0025] The light variable of each gradient illumination test scheme is determined according to the first power value and the second power value.

[0026] Optionally, determining a target gradient illumination test plan based on the light variable includes:

[0027] sorting the light variables to determine a minimum light variable among the light variables;

[0028] The gradient illumination test plan corresponding to the minimum light variable is used as a target gradient illumination test plan.

[0029] Optionally, performing a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and using the target displacement amount as a pre-determined amount, includes:

[0030] Coupling the test optical path to the test position, and recording the coordinates of the lens to be cured and the initial optical power;

[0031] Displacing the lens to be cured several times based on a preset step distance to obtain the optical power corresponding to each displacement value;

[0032] Constructing an optical power variation curve according to the coordinates, the initial optical power, the displacement value and the optical power;

[0033] A target displacement corresponding to the minimum optical variable is obtained according to the optical power variation curve, and the target displacement is used as a pre-withdrawal amount.

[0034] Optionally, before performing light path shaping according to the target gradient irradiation test plan and the pre-withdrawal amount, the method further includes:

[0035] verifying and optimizing the pre-withdrawal amount under the conditions of the target gradient irradiation test plan;

[0036] Determining whether the pre-withdrawal amount is the optimal displacement amount according to the verification optimization result;

[0037] When the pre-draw amount is the optimal displacement amount, the step of shaping the optical path according to the target gradient irradiation test plan and the pre-draw amount is performed.

[0038] Optionally, the verifying and optimizing the pre-withdrawal amount under the conditions of the target gradient irradiation test scheme includes:

[0039] Setting a number of control displacements according to the pre-withdrawal amount;

[0040] Before solidifying the colloid by the light tube, the preset coordinate axis is lifted according to the pre-drawn amount and the control displacement amount;

[0041] Coupling the lens to be cured to a curing position and then performing glue dispensing to obtain the optical power before curing;

[0042] Curing is performed under the conditions of the target gradient irradiation test scheme to obtain the post-curing light power;

[0043] A verification optical power variation is obtained according to the optical power before curing and the optical power after curing.

[0044] Optionally, determining whether the pre-withdrawal amount is an optimal displacement amount according to the verification optimization result includes:

[0045] Comparing the verification optical power variation of the pre-withdrawn amount and the control displacement amount;

[0046] When the verification optical power change amount of the pre-withdrawal amount is smaller than the verification optical power change amount of the control displacement amount, the pre-withdrawal amount is determined to be the optimal displacement amount.

[0047] In addition, to achieve the above-mentioned purpose, the present invention further proposes an optical power control system during an optical path shaping process, wherein the optical power control system during an optical path shaping process comprises:

[0048] A parameter acquisition module is used to obtain the distance between the light tube and the colloid of the lens to be cured and the irradiation angle;

[0049] A gradient setting module, used to set a number of gradient irradiation test schemes according to the distance and irradiation angle of the light tube;

[0050] a curing test module, configured to perform a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme;

[0051] a gradient determination module, configured to determine a target gradient illumination test plan based on the light variable;

[0052] A displacement test module, configured to perform a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and use the target displacement amount as a pre-set amount;

[0053] A shaping execution module is used to perform light path shaping according to the target gradient irradiation test plan and the pre-withdrawn amount.

[0054] The present invention obtains the distance between the illumination lamp and the colloid of the lens to be cured and the illumination angle; sets a plurality of gradient illumination test schemes according to the distance and illumination angle of the illumination lamp; performs a curing test on the lens to be cured according to the gradient illumination test scheme to obtain the light variables of each gradient illumination test scheme; determines a target gradient illumination test scheme based on the light variables; performs a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and uses the target displacement amount as a pre-set amount; and performs optical path shaping according to the target gradient illumination test scheme and the pre-set amount. In the present invention, on the one hand, by setting the illumination intensity and time according to a gradient, and selecting the target gradient illumination test scheme with the best effect through the curing test, the curing effect is ensured while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the variation of the optical power. On the other hand, by setting a pre-draw amount before coupling and compensating for the displacement of the lens to be cured before light curing, the deformation of the glue during the curing process under different glue conditions and different glue thickness conditions can be minimized, thereby ensuring the stability of the optical path structure to the greatest extent, greatly improving the optical power variation and reliability of the optical device coupling process, and solving the technical problem of low coupling accuracy in the existing optical device production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 Schematic diagram of the flow of the first embodiment of the optical power control method during optical path shaping of the present invention;

[0056] Figure 2 Schematic diagram of the structure of the optical path shaping process of the present invention;

[0057] Figure 3 Schematic diagram of the optical power variation curve during the optical path shaping process of the present invention;

[0058] Figure 4 Schematic diagram of the flow of the second embodiment of the optical power control method during the optical path shaping process of the present invention;

[0059] Figure 5 Schematic diagram of the flow of a third embodiment of the optical power control method during optical path shaping of the present invention;

[0060] Figure 6 This is a structural block diagram of the first embodiment of the optical power control system in the optical path shaping process of the present invention.

[0061] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0062] The following will clearly and completely describe the technical solutions in the 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0063] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0064] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0065] The traditional device structure in the industry combines the chip, lens, and pin components together through laser welding, and controls the uniformity of the welding torch to ensure welding light variation. With the development of the industry, the device structure has gradually evolved from coaxial packaging to planar packaging, and the component assembly process in the optical path has also changed from laser welding to gluing. In addition to the reliability requirements, the gluing process also places higher demands on the optical power accuracy of the process. The current conventional process controls the selection of glue and the illumination time. The optical power variation during the curing process is generally controlled at 1.5dB, and it is impossible to further increase the optical power variation. For example, the traditional solution uses light curing by purchasing the recommended curing parameters of the glue. Although the curing effect can be achieved, the short-term curing will generate large glue stress, resulting in large glue deformation before and after curing and under high and low temperature conditions, and large optical power variation.

[0066] In view of the above problems, the present invention proposes a method for controlling optical power during optical path shaping.

[0067] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a first embodiment of a method for controlling optical power during optical path shaping according to the present invention.

[0068] like Figure 1 As shown, the optical power control method during the optical path shaping process includes:

[0069] Step S100: obtaining the distance between the light tube and the colloid of the lens to be cured and the irradiation angle;

[0070] Step S200: setting a plurality of gradient illumination test schemes according to the distance and illumination angle of the illumination lamp;

[0071] Step S300: performing a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme;

[0072] Step S400: determining a target gradient illumination test plan based on the light variable;

[0073] Step S500: performing a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and using the target displacement amount as a pre-set amount;

[0074] Step S600: performing optical path shaping according to the target gradient irradiation test plan and the pre-withdrawal amount.

[0075] It should be noted that the illumination lamp in this embodiment can be an ultraviolet (UV) illumination lamp, or other illumination devices that can achieve the same or similar functions, and this embodiment is not limited thereto. In this embodiment, the optical power control system in the optical path shaping process composed of an ultraviolet (UV) illumination lamp, a lens to be cured, a colloid, and a bonding substrate is used as an example to illustrate.

[0076] It is understandable that Figure 2 FIG. 1 is a structural diagram of the optical path shaping process of the present invention, as shown in FIG. Figure 2 As shown, reference numeral 1 shows an ultraviolet (UV) light tube, reference numeral 2 shows a lens to be cured, reference numeral 3 shows a colloid, and reference numeral 4 shows a bonding substrate. Figure 2 , determine the distance L1 between the ultraviolet (UV) light tube 1 and the bottom colloid 3 of the lens 2 to be cured and the irradiation angle R1, the unit of the distance L1 is millimeter (mm), the unit of the irradiation angle R1 is degree, and determine the maximum light intensity I1 based on the distance L1 and the irradiation angle R1 of the ultraviolet (UV) light tube 1, the unit of the maximum light intensity I1 is mw / cm 2 .

[0077] In one example, several gradient irradiation test schemes are set based on the distance and irradiation angle of the irradiation lamp, including: determining the illumination intensity threshold of the irradiation lamp based on the distance and irradiation angle of the irradiation lamp; and setting several gradient irradiation test schemes based on the illumination intensity threshold, each of which includes a gradient irradiation light intensity and irradiation time. For example, the distance L1 between the ultraviolet (UV) irradiation lamp 1 and the bottom colloid 3 of the lens 2 to be cured is 2 mm, the irradiation angle R1 is 45°, and the maximum illumination intensity I1 of the ultraviolet (UV) irradiation lamp 1 is 3250 mw / cm 2 .

[0078] It should be noted that the gradient irradiation light intensity I and irradiation time T are set in different proportions according to the maximum light intensity I1. The unit of irradiation time T is second (s). For example, as shown in Table 1, four gradient irradiation test schemes are set according to different gradients and times.

[0079] Table 1

[0080] Light intensity 20％ 40％ 60％ 80％ 1 10s 20s 20s 20s 2 / 20s 30s 20s 3 / / 30s 20s 4 / / / 40s

[0081] In one example, a curing test is performed on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme, including: coupling the lens to be cured to a curing position and performing glue dispensing to obtain a first power value before curing; obtaining the gradient irradiation light intensity and irradiation time according to the gradient irradiation test scheme; curing the colloid by the light tube based on the gradient irradiation light intensity and the irradiation time to obtain a second power value after curing; and determining the light variables of each gradient irradiation test scheme according to the first power value and the second power value.

[0082] Specifically, the lens to be cured is coupled to the optimal position and glue is dispensed. After glue dispensing, the maximum power value (i.e., the first power value before curing) P is recorded. max , the unit is dBm, irradiate according to the different gradients of the gradient irradiation test plan, and record the power value after the glue is cured (that is, the second power value after curing) P min , in dBm. Calculate the light variable p of each gradient irradiation test scheme based on the power values ​​before and after curing = maximum power value P max -Power value after curing P min , unit is dB.

[0083] For example, the lens to be cured is coupled to the optimal position and then glue is dispensed. Curing tests are performed according to the four gradient irradiation test schemes shown in Table 1. The light power change of each gradient irradiation test scheme is recorded to obtain the light variable of each gradient irradiation test scheme. The minimum light variable and the corresponding gradient setting are recorded, as shown in Table 2.

[0084] Table 2

[0085]

[0086] In one example, the light variables are sorted to determine the minimum light variable among the light variables; the gradient irradiation test scheme corresponding to the minimum light variable is used as the target gradient irradiation test scheme. It can be understood that, as shown in Table 2, the UV before and after changes corresponding to UV irradiation gradient scheme 1 are approximately 0.85 and 0.94, the UV before and after changes corresponding to UV irradiation gradient scheme 2 are approximately 0.91 and 0.92, and the UV before and after changes corresponding to UV irradiation gradient schemes 3 and 4 are both greater than 1, so scheme 1 and scheme 2 can be selected as target gradient irradiation test schemes. In this embodiment, the light power changes of schemes 1 and 2 in the four gradient irradiation test schemes shown in Table 1 are similar, both about 0.9. Considering the improvement of efficiency, scheme 2 is preferred as the target gradient irradiation test scheme. By setting the target gradient irradiation test scheme to match different light intensities and times, the light energy is gradually increased to ensure the curing effect while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the light power change.

[0087] In one example, a displacement test is performed on the lens to be cured based on a preset step distance to obtain a target displacement amount, and the target displacement amount is used as a pre-drawn amount, including: coupling a test optical path to a test position, recording the coordinates of the lens to be cured and the initial optical power; performing a plurality of displacements on the lens to be cured based on the preset step distance to obtain the optical power corresponding to each displacement value; constructing an optical power variation curve according to the coordinates, initial optical power, displacement value and optical power; obtaining the target displacement amount corresponding to the minimum optical variable according to the optical power variation curve, and using the target displacement amount as a pre-drawn amount.

[0088] Specifically, the purpose of coupling is to focus the divergent light emitted by the semiconductor laser chip (chip) through the lens (lens) into a 9um optical fiber or to focus the divergent light emitted by the optical fiber into the photosensitive surface of a photodetector chip (PDchip) of about 20um, couple the above-mentioned test optical path to the optimal position, and record the position coordinate X1 of the lens to be cured (lens) and the initial optical power P0. Move the lens to be cured 15 times in steps of 0.2um, and record the optical power P corresponding to different displacement values ​​(optical power P1 to P15 can be obtained). Based on the position coordinate X1, optical power P0 to optical power P15, and displacement value, a curve of optical power variation with Z-axis position is produced, and the optical power variation curve is drawn. The optical power variation curve is as follows: Figure 3 Based on the above Table 2, the minimum light variable of the glue curing process is obtained, for example, 0.9, and the reference Figure 3, in the optical power variation curve, the target displacement corresponding to the minimum optical variable 0.9 is obtained, that is, the Z-axis displacement is 0.5um, that is, the pre-withdrawal amount L is about 0.5um.

[0089] In one example, it is necessary to verify the control accuracy of the optical power variable, that is, to verify whether the pre-draw amount L is the optimal parameter. Exemplarily, before performing optical path shaping according to the target gradient irradiation test scheme and the pre-draw amount, the method further includes: verifying and optimizing the pre-draw amount under the conditions of the target gradient irradiation test scheme; determining whether the pre-draw amount is the optimal displacement amount based on the verification optimization result; and performing the optical path shaping according to the target gradient irradiation test scheme and the pre-draw amount when the pre-draw amount is the optimal displacement amount. It is understood that, referring to Table 2, the UV front-to-back variation, i.e., the optical variable, for UV irradiation gradient scheme 1 is 0.85 and 0.94, the UV front-to-back variation for UV irradiation gradient scheme 2 is 0.91 and 0.92, the UV front-to-back variation for UV irradiation gradient scheme 3 is 1.23 and 1.16, and the UV front-to-back variation for UV irradiation gradient scheme 4 is 1.45 and 1.25. Sorting the above light variables, the smallest change before and after UV exposure, i.e., the light variable, is 0.85. The light variables of Scheme 1 and Scheme 2 are both approximately 0.9. Scheme 1 and Scheme 2 can be selected as the target gradient irradiation test schemes. Considering efficiency, Scheme 2 is preferred as the target gradient irradiation test scheme.

[0090] Specifically, the pre-withdrawal amount is verified and optimized under the conditions of the target gradient irradiation test scheme, including: setting a number of control displacements according to the pre-withdrawal amount; before curing the colloid through the light tube, lifting the preset coordinate axis according to the pre-withdrawal amount and the control displacement; coupling the lens to be cured to the curing position and then dispensing glue to obtain the light power before curing; curing under the conditions of the target gradient irradiation test scheme to obtain the light power after curing; and obtaining the verification light power change according to the light power before curing and the light power after curing. Wherein, determining whether the pre-withdrawal amount is the optimal displacement amount based on the verification optimization result includes: comparing the verification light power change of the pre-withdrawal amount and the control displacement amount; when the verification light power change of the pre-withdrawal amount is less than the verification light power change of the control displacement amount, determining that the pre-withdrawal amount is the optimal displacement amount.

[0091] For example, Scheme 2 was selected as the target gradient irradiation test scheme, and verification optimization was performed under the conditions of UV light intensity of 40% for 20 seconds, UV light intensity of 60% for 30 seconds, and UV light intensity of 80% for 20 seconds. The initial drawdown L was approximately 0.5 μm, and several control displacements were set, such as displacements of 0.2 and 0.8. The corresponding Z-axis position during the verification of glue curing was determined based on the initial drawdown L and displacement, as shown in Table 3. Curing was performed under Scheme 2 as the target gradient irradiation test scheme, and the verification optical power change before and after curing was obtained.

[0092] Table 3

[0093]

[0094] It can be understood that in order to improve the verification accuracy, multiple tests are carried out for each Z-axis displacement, for example twice. The verification light power changes of the displacement of 0.2 are 0.63 and 0.76 respectively, the verification light power changes of the pre-withdrawal amount L=0.5um are 0.09 and 0.08 respectively, and the verification light power changes of the displacement of 0.8 are 0.47 and 0.5 respectively. Therefore, by comparing the verification light power changes of the pre-withdrawal amount and the control displacement amount, the verification light power change of the pre-withdrawal amount L=0.5um is smaller than the verification light power change of the control displacement amount, and the pre-withdrawal amount L=0.5um is determined to be the optimal displacement. The pre-withdrawal amount L is verified to be the optimal parameter based on the verification light power change.

[0095] Referring to Table 3, the Z-axis lift (i.e., displacement) of No. 1 and No. 2 is small, and the optical power change is about 0.7dB. The Z-axis lift (i.e., displacement) of No. 5 and No. 6 is too large, and the optical power change is about 0.5dB. The Z-axis lift (i.e., pre-lift L = 0.5um) optical power change of No. 3 and No. 4 obtained according to actual verification has basically not changed. The Z-axis lift optical power is reduced before UV curing, but during the curing process, the power value can return to near the optimal value before UV as the colloid deforms.

[0096] In one example, light path shaping is performed according to the target gradient irradiation test scheme and the pre-withdrawal amount, specifically including: gradually increasing the light energy by matching different light intensities and times through the target gradient irradiation test scheme setting, ensuring the curing effect while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the variation of light power. In addition, the deformation amount before and after glue curing under the conditions of different glues and different glue thicknesses is verified by experiments, so that the effect of controlling the light variable is achieved by pre-withdrawing before UV irradiation. In practice, according to the phenomenon of batch production, the appropriateness of the pre-withdrawal amount is judged by observing the power change trend during the curing process, and the optimal pre-withdrawal amount is obtained through repeated optimization and debugging. After the lens to be cured is coupled to the optimal position and before light curing, displacement compensation is performed according to the pre-withdrawal amount. The above method of this embodiment can control the variation of light power during the curing process to within 0.5dB.

[0097] It should be noted that the optical power control method during the optical path shaping process proposed in this embodiment can improve the coupling process accuracy of planar packaging products in the optical communication field, greatly improve the yield of batch processes, and is particularly suitable for the optical power accuracy control of the coupling process of the lens to be cured for single-mode products above 100G.

[0098] This embodiment obtains the distance between the illumination lamp and the colloid of the lens to be cured and the illumination angle; sets several gradient illumination test schemes according to the distance and illumination angle of the illumination lamp; performs a curing test on the lens to be cured according to the gradient illumination test scheme to obtain the light variables of each gradient illumination test scheme; determines a target gradient illumination test scheme based on the light variables; performs a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and uses the target displacement amount as a pre-set amount; and shapes the optical path according to the target gradient illumination test scheme and the pre-set amount. In this embodiment, on the one hand, by setting the illumination intensity and time according to the gradient and selecting the target gradient illumination test scheme with the best effect through the curing test, the curing effect is ensured while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the variation of the optical power. On the other hand, by setting a pre-draw amount before coupling and compensating for the displacement of the lens to be cured before light curing, the deformation of the glue during the curing process under different glue conditions and different glue thickness conditions can be minimized, thereby ensuring the stability of the optical path structure to the greatest extent, greatly improving the optical power variation and reliability of the optical device coupling process, and solving the technical problem of low coupling accuracy in the existing optical device production process.

[0099] In one embodiment, if Figure 4 As shown, based on the first embodiment, a second embodiment of the optical power control method during optical path shaping of the present invention is proposed, wherein step S200 includes:

[0100] Step S201: determining a light intensity threshold of the light tube according to the distance and the illumination angle of the light tube;

[0101] Step S202: setting a plurality of gradient illumination test schemes based on the illumination intensity threshold, each of the gradient illumination test schemes including gradient illumination light intensity and illumination time.

[0102] It should be noted that before setting up several gradient irradiation test schemes based on the light intensity threshold, it also includes: determining the preset total energy absorbed by the colloid according to the preset colloid curing requirements; accordingly, setting up several gradient irradiation test schemes based on the light intensity threshold includes: setting up several gradient irradiation test schemes based on the light intensity threshold and the preset total energy absorbed by the colloid, each of the gradient irradiation test schemes including gradient irradiation light intensity and irradiation time; determining the total energy absorbed by the irradiated colloid according to the gradient irradiation light intensity and the irradiation time; wherein, the total energy absorbed by the irradiated colloid is greater than or equal to the preset total energy absorbed by the colloid.

[0103] Specifically, the total energy J1 that needs to be absorbed (i.e., the preset total energy absorbed by the colloid) is calculated according to the glue curing requirements. The unit of the total energy J1 is joule (J). The gradient irradiation light intensity I and irradiation time T are set in different proportions according to the maximum light intensity I1. The unit of irradiation time T is second (s). The total energy J2 absorbed by the irradiated colloid is equal to the sum of the irradiation light intensity I of different gradients and the irradiation time T of different gradients. The total energy J2 absorbed by the irradiated colloid should be greater than or equal to the preset total energy absorbed by the colloid J1. Based on the above analysis, a gradient irradiation test plan is set.

[0104] For example, the distance L1 between the ultraviolet (UV) light tube 1 and the bottom colloid 3 of the lens 2 to be cured is 2 mm, the irradiation angle R1 is 45°, and the maximum illumination intensity I1 of the ultraviolet (UV) light tube 1 is 3250 mw / cm 2 For example, as shown in Table 1, four gradient irradiation test schemes were set according to different gradients and times. It can be understood that different light gradients of different light tubes are matched to different selected glues to reduce the stress of glue curing and thus reduce the variation of light power.

[0105] This embodiment determines the illumination intensity threshold of the illumination lamp based on the distance and illumination angle of the illumination lamp; and sets a number of gradient illumination test schemes based on the illumination intensity threshold, each of which includes a gradient illumination light intensity and illumination time. In this embodiment, by setting the illumination intensity and time according to a gradient and selecting the target gradient illumination test scheme with the best effect through curing testing, the curing effect is ensured while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the variation of optical power.

[0106] In one embodiment, if Figure 5 As shown, based on the first embodiment, a third embodiment of the optical power control method during optical path shaping of the present invention is proposed, wherein step S400 includes:

[0107] Step S401: sorting the light variables to determine the minimum light variable among the light variables;

[0108] Step S402: taking the gradient illumination test plan corresponding to the minimum light variable as a target gradient illumination test plan.

[0109] The step S500 includes:

[0110] Step S501: coupling the test optical path to the test position, and recording the coordinates of the lens to be cured and the initial optical power;

[0111] Step S502: performing a plurality of displacements on the lens to be cured based on a preset step distance to obtain optical powers corresponding to each displacement value;

[0112] Step S503: constructing an optical power variation curve according to the coordinates, initial optical power, displacement value and optical power;

[0113] Step S504: obtaining a target displacement corresponding to the minimum optical variable according to the optical power variation curve, and using the target displacement as a pre-withdrawal amount.

[0114] It should be noted that the purpose of coupling is to focus the divergent light emitted by the semiconductor laser chip (chip) through the lens (lens) into a 9um optical fiber or to focus the divergent light emitted by the optical fiber onto the photosensitive surface of a photodetector chip (PDchip) of about 20um. The above-mentioned test optical path is coupled to the optimal position, and the position coordinate X1 of the lens to be cured and the initial optical power P0 are recorded.

[0115] Specifically, the lens to be cured can be moved 15 times in a step of 0.2 μm, and the optical power P corresponding to different displacement values ​​can be recorded (optical powers P1 to P15 can be obtained). Based on the position coordinate X1, optical power P0 to optical power P15, and displacement value, a curve of optical power variation versus Z-axis position is produced, and the optical power variation curve is plotted. The optical power variation curve is as follows: Figure 3 shown.

[0116] It can be understood that, referring to Table 2, the UV before and after changes in UV irradiation gradient scheme 1, that is, the light variables, are 0.85 and 0.94, the UV before and after changes in UV irradiation gradient scheme 2 are 0.91 and 0.92, the UV before and after changes in UV irradiation gradient scheme 3 are 1.23 and 1.16, and the UV before and after changes in UV irradiation gradient scheme 4 are 1.45 and 1.25. Sorting the above light variables, the smallest UV before and after change, that is, the light variable, is 0.85. Based on the above Table 2, the minimum light variable in the glue curing process is about 0.9. Figure 3 , in the optical power variation curve, the target displacement corresponding to the minimum optical variable 0.9 is obtained, that is, the Z-axis displacement is 0.5um, that is, the pre-withdrawal amount L is about 0.5um.

[0117] This embodiment sorts the light variables to determine the minimum light variable among the light variables; the gradient irradiation test scheme corresponding to the minimum light variable is used as the target gradient irradiation test scheme. The test light path is coupled to the test position, and the coordinates and initial light power of the lens to be cured are recorded; the lens to be cured is displaced several times based on a preset step distance to obtain the light power corresponding to each displacement value; an optical power variation curve is constructed based on the coordinates, initial light power, displacement value, and light power; the target displacement corresponding to the minimum light variable is obtained based on the optical power variation curve, and the target displacement is used as a pre-draw. In this embodiment, by setting a pre-draw before coupling, the displacement of the lens to be cured is compensated before light curing, which can minimize the deformation of the glue during the curing process under different glues and different glue thicknesses, thereby ensuring the stability of the optical path structure to the greatest extent, greatly improving the optical power variation and reliability of the optical device coupling process, and solving the technical problem of low coupling accuracy in the existing optical device production process.

[0118] Reference Figure 6 , Figure 6 This is a structural block diagram of the first embodiment of the optical power control system in the optical path shaping process of the present invention.

[0119] like Figure 6 As shown, the optical power control system during the optical path shaping process includes:

[0120] A parameter acquisition module is used to obtain the distance between the light tube and the colloid of the lens to be cured and the irradiation angle;

[0121] A gradient setting module, used to set a number of gradient irradiation test schemes according to the distance and irradiation angle of the light tube;

[0122] a curing test module, configured to perform a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme;

[0123] a gradient determination module, configured to determine a target gradient illumination test plan based on the light variable;

[0124] A displacement test module, configured to perform a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and use the target displacement amount as a pre-set amount;

[0125] A shaping execution module is used to perform light path shaping according to the target gradient irradiation test plan and the pre-withdrawn amount.

[0126] It should be noted that the illumination lamp in this embodiment can be an ultraviolet (UV) illumination lamp, or other illumination devices that can achieve the same or similar functions, and this embodiment is not limited thereto. In this embodiment, the optical power control system in the optical path shaping process composed of an ultraviolet (UV) illumination lamp, a lens to be cured, a colloid, and a bonding substrate is used as an example to illustrate.

[0127] It is understandable that Figure 2 FIG. 1 is a structural diagram of the optical path shaping process of the present invention, as shown in FIG. Figure 2 As shown, reference numeral 1 shows an ultraviolet (UV) light tube, reference numeral 2 shows a lens to be cured, reference numeral 3 shows a colloid, and reference numeral 4 shows a bonding substrate. Figure 2 , determine the distance L1 between the ultraviolet (UV) light tube 1 and the bottom colloid 3 of the lens 2 to be cured and the irradiation angle R1, the unit of the distance L1 is millimeter (mm), the unit of the irradiation angle R1 is degree, and determine the maximum light intensity I1 based on the distance L1 and the irradiation angle R1 of the ultraviolet (UV) light tube 1, the unit of the maximum light intensity I1 is mw / cm 2 .

[0128] In one example, several gradient irradiation test schemes are set based on the distance and irradiation angle of the irradiation lamp, including: determining the illumination intensity threshold of the irradiation lamp based on the distance and irradiation angle of the irradiation lamp; and setting several gradient irradiation test schemes based on the illumination intensity threshold, each of which includes a gradient irradiation light intensity and irradiation time. For example, the distance L1 between the ultraviolet (UV) irradiation lamp 1 and the bottom colloid 3 of the lens 2 to be cured is 2 mm, the irradiation angle R1 is 45°, and the maximum illumination intensity I1 of the ultraviolet (UV) irradiation lamp 1 is 3250 mw / cm 2 .

[0129] It should be noted that the gradient irradiation light intensity I and irradiation time T are set in different proportions according to the maximum light intensity I1. The unit of irradiation time T is second (s). For example, as shown in Table 1, four gradient irradiation test schemes are set according to different gradients and times.

[0130] Table 1

[0131] Light intensity 20％ 40％ 60％ 80％ 1 10s 20s 20s 20s 2 / 20s 30s 20s 3 / / 30s 20s 4 / / / 40s

[0132] In one example, a curing test is performed on the lens to be cured according to the gradient irradiation test scheme to obtain the light variables of each gradient irradiation test scheme, including: coupling the lens to be cured to the curing position and then dispensing glue to obtain a first power value before curing; obtaining the gradient irradiation light intensity and irradiation time according to the gradient irradiation test scheme; curing the colloid based on the gradient irradiation light intensity and the irradiation time by the light tube to obtain a second power value after curing; and determining the light variables of each gradient irradiation test scheme based on the first power value and the second power value. Specifically, after the lens to be cured is coupled to the optimal position, dispensing glue is performed, and after dispensing glue, the maximum power value (i.e., the first power value before curing) P is recorded. max , the unit is dBm, irradiate according to the different gradients of the gradient irradiation test plan, and record the power value after the glue is cured (that is, the second power value after curing) P min , in dBm. Calculate the light variable p=P for each gradient illumination test scheme max -P min , unit is dB.

[0133] For example, the lens to be cured is coupled to the optimal position and then glue is dispensed. Curing tests are performed according to the four gradient irradiation test schemes shown in Table 1. The light power change of each gradient irradiation test scheme is recorded to obtain the light variable of each gradient irradiation test scheme. The minimum light variable and the corresponding gradient setting are recorded, as shown in Table 2.

[0134] Table 2

[0135]

[0136] In one example, the light variables are sorted to determine the minimum light variable among the light variables; the gradient irradiation test scheme corresponding to the minimum light variable is used as the target gradient irradiation test scheme. It can be understood that, as shown in Table 2, the UV before and after changes corresponding to UV irradiation gradient scheme 1 are approximately 0.85 and 0.94, the UV before and after changes corresponding to UV irradiation gradient scheme 2 are approximately 0.91 and 0.92, and the UV before and after changes corresponding to UV irradiation gradient schemes 3 and 4 are both greater than 1, so scheme 1 and scheme 2 can be selected as target gradient irradiation test schemes. In this embodiment, the light power changes of schemes 1 and 2 in the four gradient irradiation test schemes shown in Table 1 are similar, both about 0.9. Considering the improvement of efficiency, scheme 2 is preferred as the target gradient irradiation test scheme. By setting the target gradient irradiation test scheme to match different light intensities and times, the light energy is gradually increased to ensure the curing effect while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the light power change.

[0137] In one example, a displacement test is performed on the lens to be cured based on a preset step distance to obtain a target displacement amount, and the target displacement amount is used as a pre-drawn amount, including: coupling a test optical path to a test position, recording the coordinates of the lens to be cured and the initial optical power; performing a plurality of displacements on the lens to be cured based on the preset step distance to obtain the optical power corresponding to each displacement value; constructing an optical power variation curve according to the coordinates, initial optical power, displacement value and optical power; obtaining the target displacement amount corresponding to the minimum optical variable according to the optical power variation curve, and using the target displacement amount as a pre-drawn amount.

[0138] Specifically, the purpose of coupling is to focus the divergent light emitted by the semiconductor laser chip (chip) through the lens (lens) into a 9um optical fiber or to focus the divergent light emitted by the optical fiber into the photosensitive surface of a photodetector chip (PDchip) of about 20um, couple the above-mentioned test optical path to the optimal position, and record the position coordinate X1 of the lens to be cured (lens) and the initial optical power P0. Move the lens to be cured 15 times in steps of 0.2um, and record the optical power P corresponding to different displacement values ​​(optical power P1 to P15 can be obtained). Based on the position coordinate X1, optical power P0 to optical power P15, and displacement value, a curve of optical power variation with Z-axis position is produced, and the optical power variation curve is drawn. The optical power variation curve is as follows: Figure 3 As shown. Based on the above Table 2, the minimum light variable of the glue curing process is obtained, for example, 0.9, and the reference Figure 3 , in the optical power variation curve, the target displacement corresponding to the minimum optical variable 0.9 is obtained, that is, the Z-axis displacement is 0.5um, that is, the pre-withdrawal amount L is about 0.5um.

[0139] In one example, it is necessary to verify the control accuracy of the optical power variable, that is, to verify whether the pre-draw amount L is the optimal parameter. Exemplarily, before performing optical path shaping according to the target gradient irradiation test scheme and the pre-draw amount, the method further includes: verifying and optimizing the pre-draw amount under the conditions of the target gradient irradiation test scheme; determining whether the pre-draw amount is the optimal displacement amount based on the verification optimization result; and performing the optical path shaping according to the target gradient irradiation test scheme and the pre-draw amount when the pre-draw amount is the optimal displacement amount. It is understood that, referring to Table 2, the UV front-to-back variation, i.e., the optical variable, for UV irradiation gradient scheme 1 is 0.85 and 0.94, the UV front-to-back variation for UV irradiation gradient scheme 2 is 0.91 and 0.92, the UV front-to-back variation for UV irradiation gradient scheme 3 is 1.23 and 1.16, and the UV front-to-back variation for UV irradiation gradient scheme 4 is 1.45 and 1.25. Sorting the above light variables, the smallest change before and after UV exposure, i.e., the light variable, is 0.85. The light variables of Scheme 1 and Scheme 2 are both approximately 0.9. Scheme 1 and Scheme 2 can be selected as the target gradient irradiation test schemes. Considering efficiency, Scheme 2 is preferred as the target gradient irradiation test scheme.

[0140] Specifically, the pre-withdrawal amount is verified and optimized under the conditions of the target gradient irradiation test scheme, including: setting a number of control displacements according to the pre-withdrawal amount; before curing the colloid through the light tube, lifting the preset coordinate axis according to the pre-withdrawal amount and the control displacement; coupling the lens to be cured to the curing position and then dispensing glue to obtain the light power before curing; curing under the conditions of the target gradient irradiation test scheme to obtain the light power after curing; and obtaining the verification light power change according to the light power before curing and the light power after curing. Wherein, determining whether the pre-withdrawal amount is the optimal displacement amount based on the verification optimization result includes: comparing the verification light power change of the pre-withdrawal amount and the control displacement amount; when the verification light power change of the pre-withdrawal amount is less than the verification light power change of the control displacement amount, determining that the pre-withdrawal amount is the optimal displacement amount.

[0141] For example, Scheme 2 was selected as the target gradient irradiation test scheme, and verification optimization was performed under the conditions of UV light intensity of 40% for 20 seconds, UV light intensity of 60% for 30 seconds, and UV light intensity of 80% for 20 seconds. The initial drawdown L was approximately 0.5 μm, and several control displacements were set, such as displacements of 0.2 and 0.8. The corresponding Z-axis position during the verification of glue curing was determined based on the initial drawdown L and displacement, as shown in Table 3. Curing was performed under Scheme 2 as the target gradient irradiation test scheme, and the verification optical power change before and after curing was obtained.

[0142] Table 3

[0143]

[0144] It can be understood that in order to improve the verification accuracy, multiple tests are carried out for each Z-axis displacement, for example twice. The verification light power changes of the displacement of 0.2 are 0.63 and 0.76 respectively, the verification light power changes of the pre-withdrawal amount L=0.5um are 0.09 and 0.08 respectively, and the verification light power changes of the displacement of 0.8 are 0.47 and 0.5 respectively. Therefore, by comparing the verification light power changes of the pre-withdrawal amount and the control displacement amount, the verification light power change of the pre-withdrawal amount L=0.5um is smaller than the verification light power change of the control displacement amount, and the pre-withdrawal amount L=0.5um is determined to be the optimal displacement. The pre-withdrawal amount L is verified to be the optimal parameter based on the verification light power change.

[0145] Referring to Table 3, the Z-axis lift (i.e., displacement) of No. 1 and No. 2 is small, and the optical power change is about 0.7dB. The Z-axis lift (i.e., displacement) of No. 5 and No. 6 is too large, and the optical power change is about 0.5dB. The Z-axis lift (i.e., pre-lift L = 0.5um) optical power change of No. 3 and No. 4 obtained according to actual verification has basically not changed. The Z-axis lift optical power is reduced before UV curing, but during the curing process, the power value can return to near the optimal value before UV as the colloid deforms.

[0146] In one example, light path shaping is performed according to the target gradient irradiation test scheme and the pre-withdrawal amount, specifically including: gradually increasing the light energy by matching different light intensities and times through the target gradient irradiation test scheme setting, ensuring the curing effect while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the variation of light power. In addition, the deformation amount before and after glue curing under the conditions of different glues and different glue thicknesses is verified by experiments, so that the effect of controlling the light variable is achieved by pre-withdrawing before UV irradiation. In practice, according to the phenomenon of batch production, the appropriateness of the pre-withdrawal amount is judged by observing the power change trend during the curing process, and the optimal pre-withdrawal amount is obtained through repeated optimization and debugging. After the lens to be cured is coupled to the optimal position and before light curing, displacement compensation is performed according to the pre-withdrawal amount. The above method of this embodiment can control the variation of light power during the curing process to within 0.5dB.

[0147] It should be noted that the optical power control method during the optical path shaping process proposed in this embodiment can improve the coupling process accuracy of planar packaging products in the optical communication field, greatly improve the yield of batch processes, and is particularly suitable for the optical power accuracy control of the coupling process of the lens to be cured for single-mode products above 100G.

[0148] This embodiment, on the one hand, by setting the illumination intensity and duration according to a gradient, and selecting the most effective target gradient illumination test scheme through curing tests, ensures the curing effect while minimizing the stress generated during the glue curing process, thereby achieving the effect of controlling the variation in optical power. On the other hand, by setting a pre-draw before coupling and compensating for the displacement of the lens to be cured before light curing, glue deformation during the curing process can be minimized for different glues and glue thicknesses, thereby maximizing the stability of the optical path structure, significantly improving the variation in optical power and reliability during the optical device coupling process, and resolving the technical problem of low coupling precision in existing optical device production processes.

[0149] In addition, for technical details not fully described in the embodiment of the optical power control system during optical path shaping, reference may be made to the optical power control method during optical path shaping provided in any embodiment of the present invention, and will not be repeated here.

[0150] It should be understood that the above is only an example and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any limitation on this.

[0151] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of it according to actual needs to achieve the purpose of the embodiment scheme, and no limitation is made here.

[0152] In addition, it should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0153] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0154] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0155] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling optical power during optical path shaping, characterized in that: The optical power control method during the optical path shaping process includes: Obtain the distance between the light tube and the colloid of the lens to be cured and the irradiation angle; Setting up several gradient irradiation test schemes according to the distance and irradiation angle of the light tube; Performing a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme; determining a target gradient illumination test plan based on the light variables; Performing a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and using the target displacement amount as a pre-set amount; Performing optical path shaping according to the target gradient irradiation test plan and the pre-withdrawal amount; Before performing optical path shaping according to the target gradient irradiation test plan and the pre-draw amount, the method further includes: verifying and optimizing the pre-draw amount under the conditions of the target gradient irradiation test plan; determining whether the pre-draw amount is an optimal displacement amount according to the verification and optimization result; and performing optical path shaping according to the target gradient irradiation test plan and the pre-draw amount when the pre-draw amount is the optimal displacement amount. The pre-withdrawal amount is verified and optimized under the conditions of the target gradient irradiation test scheme, including: setting a number of control displacements according to the pre-withdrawal amount; before curing the colloid through the light tube, lifting the preset coordinate axis according to the pre-withdrawal amount and the control displacement; coupling the lens to be cured to the curing position and then dispensing glue to obtain the light power before curing; curing under the conditions of the target gradient irradiation test scheme to obtain the light power after curing; and obtaining a verification light power change amount according to the light power before curing and the light power after curing; Determining whether the pre-withdrawal amount is the optimal displacement amount according to the verification optimization result includes: comparing the verification optical power change of the pre-withdrawal amount and the verification optical power change of the control displacement amount; when the verification optical power change of the pre-withdrawal amount is less than the verification optical power change of the control displacement amount, determining that the pre-withdrawal amount is the optimal displacement amount.

2. The optical power control method during optical path shaping according to claim 1, wherein: The method of setting up several gradient irradiation test schemes according to the distance and irradiation angle of the light tube includes: Determining a light intensity threshold of the light tube according to the distance and illumination angle of the light tube; A plurality of gradient illumination test plans are set based on the illumination intensity threshold, each of the gradient illumination test plans including gradient illumination light intensity and illumination time.

3. The optical power control method during optical path shaping according to claim 2, wherein: Before setting a plurality of gradient illumination test schemes based on the light intensity threshold, the method further includes: Determine the total energy absorbed by the preset colloid according to the preset colloid curing requirements; Accordingly, the step of setting a plurality of gradient illumination test schemes based on the light intensity threshold includes: Setting a plurality of gradient irradiation test schemes based on the light intensity threshold and the preset colloid absorption total energy, each of the gradient irradiation test schemes including gradient irradiation light intensity and irradiation time; The total energy absorbed by the irradiated colloid is determined according to the gradient irradiation light intensity and the irradiation time; wherein the total energy absorbed by the irradiated colloid is greater than or equal to the preset total energy absorbed by the colloid.

4. The optical power control method during optical path shaping according to claim 1, wherein: The step of performing a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme includes: Coupling the lens to be cured to a curing position and then performing glue dispensing to obtain a first power value before curing; Obtaining gradient irradiation light intensity and irradiation time according to the gradient irradiation test plan; curing the colloid by the illumination lamp based on the gradient illumination light intensity and the illumination time to obtain a second power value after curing; The light variable of each gradient illumination test scheme is determined according to the first power value and the second power value.

5. The optical power control method during optical path shaping according to claim 1, wherein: The step of determining a target gradient illumination test plan based on the light variable includes: sorting the light variables to determine a minimum light variable among the light variables; The gradient illumination test plan corresponding to the minimum light variable is used as a target gradient illumination test plan.

6. The optical power control method during optical path shaping according to claim 5, wherein: The step of performing a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and using the target displacement amount as a pre-determined amount, comprises: Coupling the test optical path to the test position, and recording the coordinates of the lens to be cured and the initial optical power; Displacing the lens to be cured several times based on a preset step distance to obtain the optical power corresponding to each displacement value; Constructing an optical power variation curve according to the coordinates, the initial optical power, the displacement value and the optical power; A target displacement corresponding to the minimum optical variable is obtained according to the optical power variation curve, and the target displacement is used as a pre-withdrawal amount.

7. An optical power control system during optical path shaping, characterized in that: The optical power control system during the optical path shaping process includes: A parameter acquisition module is used to obtain the distance between the light tube and the colloid of the lens to be cured and the irradiation angle; A gradient setting module, used to set a number of gradient irradiation test schemes according to the distance and irradiation angle of the light tube; a curing test module, configured to perform a curing test on the lens to be cured according to the gradient irradiation test scheme to obtain light variables of each gradient irradiation test scheme; a gradient determination module, configured to determine a target gradient illumination test plan based on the light variable; A displacement test module, configured to perform a displacement test on the lens to be cured based on a preset step distance to obtain a target displacement amount, and use the target displacement amount as a pre-set amount; A shaping execution module, configured to perform light path shaping according to the target gradient irradiation test plan and the pre-withdrawn amount; Before performing optical path shaping according to the target gradient irradiation test plan and the pre-draw amount, the method further includes: verifying and optimizing the pre-draw amount under the conditions of the target gradient irradiation test plan; determining whether the pre-draw amount is an optimal displacement amount according to the verification and optimization result; and performing optical path shaping according to the target gradient irradiation test plan and the pre-draw amount when the pre-draw amount is the optimal displacement amount. The pre-withdrawal amount is verified and optimized under the conditions of the target gradient irradiation test scheme, including: setting a number of control displacements according to the pre-withdrawal amount; before curing the colloid through the light tube, lifting the preset coordinate axis according to the pre-withdrawal amount and the control displacement; coupling the lens to be cured to the curing position and then dispensing glue to obtain the light power before curing; curing under the conditions of the target gradient irradiation test scheme to obtain the light power after curing; and obtaining a verification light power change amount according to the light power before curing and the light power after curing; Determining whether the pre-withdrawal amount is the optimal displacement amount according to the verification optimization result includes: comparing the verification optical power change of the pre-withdrawal amount and the verification optical power change of the control displacement amount; when the verification optical power change of the pre-withdrawal amount is less than the verification optical power change of the control displacement amount, determining that the pre-withdrawal amount is the optimal displacement amount.

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