A kind of array type micro lens preparation device and preparation process thereof

Abstract

The present invention belongs to the technical field of optical elements, and discloses an array type micro lens preparation device and a preparation process thereof, wherein the device comprises: a base, a fixing frame and a supporting plate, and also comprises: a filling mechanism, comprising a pipeline, one side of the pipeline is connected to a mold, and the outer wall of the mold is evenly installed with a plurality of tension springs along its circumference; a curing mechanism, comprising a shaking assembly, a baffle and a curing lamp, a second electric telescopic rod is installed on the upper end surface of the baffle, a disc is installed on the upper end surface of the second electric telescopic rod, a rotating ball is installed on the upper end surface of the disc, and a rotating seat is sleeved on the outer wall of the rotating ball; a shaking assembly, comprising a third round rod and a plurality of protrusions, a second slide groove is opened on the outer wall of the third round rod, a round pin is slidably installed on the inner wall of the second slide groove, a first round ring is installed on one side of the round pin, an extrusion rod is installed on the outer wall of the first round ring, and a ball is rotatably installed on the lower end surface of the extrusion rod. The present invention solves the problem that when the existing device prepares a micro lens array, the quality of the finished product is affected due to the shrinkage of the polymer liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of optical elements, and in particular to an array type micro lens preparation device and a preparation process thereof. Background Art

[0002] The microlens array is an array composed of lenses with a clear aperture and relief depth of micrometers. It not only has the basic functions of traditional lenses such as focusing and imaging, but also has the characteristics of small unit size and high integration, which enables it to complete functions that traditional optical components cannot complete and can constitute many new optical systems. Therefore, the microlens array has become one of the most common micro-optical components.

[0003] The Chinese patent discloses "A preparation device for a polymer microlens array" with application number 202222241595.2. The preparation device can quickly manufacture defect-free polymer microlens arrays at room temperature by replicating the microscopic morphology of the mold and ultraviolet curing without applying external pressure.

[0004] However, the device does not take into account that during the solidification process of the polymer liquid, the size and shape of the lens will change due to the cross-linking of the molecular chains and the shrinkage of the volume. This shrinkage effect will affect the quality of the microlens array and lead to inaccurate imaging. Summary of the invention

[0005] The purpose of the present invention is to provide an array type micro lens preparation device and a preparation process thereof, and the present invention solves the problem that the quality of the finished product is affected due to the shrinkage of the polymer liquid when preparing the micro lens array.

[0006] To achieve the above object, the present invention provides the following technical solution: an array microlens preparation device, comprising a base, a fixing frame and a support plate located above the base, and further comprising:

[0007] The filling mechanism comprises a pipeline, one side of which is connected to a mold, a plurality of tension springs are evenly installed along the circumference of the outer wall of the mold, and the tension spring is installed on a fixed frame away from the mold; the polymer liquid is transported into the mold through the pipeline;

[0008] The curing mechanism comprises a shaking assembly, a baffle and a curing lamp, wherein a second electric telescopic rod is installed on the upper end surface of the baffle, a disc is installed on the upper end surface of the second electric telescopic rod, a rotating ball is installed on the upper end surface of the disc, and a rotating seat is sleeved on the outer wall of the rotating ball; the second electric telescopic rod drives the baffle to descend, and the baffle abuts against the mold and drives the mold to descend, thereby stretching the tension spring on the mold, at this time, the shaking assembly drives the rotating ball to rotate in the rotating seat through the disc, and the disc drives the mold to shake under the action of the second electric telescopic rod and the baffle, and at the same time the curing lamp irradiates the polymer liquid in the mold;

[0009] The shaking assembly includes a third round rod and a plurality of protrusions installed on the upper end surface of the disc, the outer wall of the third round rod is provided with a second slide groove, the inner wall of the second slide groove is slidably installed with a round pin, a first ring is installed on the side of the round pin away from the second slide groove, a second ring is rotatably installed on the upper end surface of the first ring, a second round rod is symmetrically installed on the upper end surface of the second ring, the upper end surface of the second round rod is installed on a supporting plate, an extrusion rod is installed on the outer wall of the first ring, and a ball is rotatably installed on the lower end surface of the extrusion rod; when the third round rod drives the second slide groove to descend, the second slide groove squeezes the round pin, and the round pin drives the first ring to rotate under the second ring, and at the same time, the first ring drives the ball to squeeze the protrusion above the disc through the extrusion rod.

[0010] Preferably, the lower end surface of the mold is made of a transparent material that does not block ultraviolet rays.

[0011] Preferably, a groove adapted to the baffle is provided on the upper end surface of the mold, and a through hole is provided at the connection point between the mold and the pipeline.

[0012] Preferably, the upper end surface of the third round rod passes through the support plate and is equipped with a first electric telescopic rod.

[0013] Preferably, a plurality of first round rods are evenly mounted along the circumference of the lower end surface of the first circular ring, and the first round rods are fixedly connected to the rotating seat at a side away from the first circular ring.

[0014] Preferably, the first circular ring and the second circular ring are both provided with openings at their centers.

[0015] Preferably, a control panel is installed on the outer wall of the base.

[0016] Preferably, a first sliding groove is formed on the outer wall of the third round rod, and the first sliding groove is connected to the second sliding groove.

[0017] Preferably, the array microlens preparation process comprises the following steps:

[0018] Step 1: First, deliver an appropriate amount of polymer liquid into the mold through the pipeline;

[0019] Step 2: The second electric telescopic rod descends, driving the baffle to descend. The baffle first abuts against the mold, and then drives the mold to stretch the tension spring until the second electric telescopic rod is fully extended;

[0020] Step 3: After the mold completes stretching the tension spring, the curing lamp works to irradiate the polymer liquid in the mold. At the same time, the third round rod drives the second slide to descend, the second slide squeezes the round pin, and the round pin drives the first ring to rotate under the second ring. The first ring drives the ball to squeeze the bumps above the disc in turn through the squeezing rod, and the disc rotates under the rotating seat through the rotating ball. At this time, the disc drives the mold to shake under the action of the second electric telescopic rod and the baffle, so that the polymer liquid is evenly distributed in the mold.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention is provided with a shaking assembly. When the first electric telescopic rod is extended, the third round rod is driven to descend at the opening of the second ring and the first ring, and the third round rod drives the second slide groove to descend. At this time, the second slide groove will squeeze the round pin, and the round pin will drive the first ring to rotate under the second ring. When the first ring rotates, it will drive the extrusion rod to rotate, and the extrusion rod will drive the ball to rotate. The ball will sequentially squeeze the protrusions on the disc, and the protrusion will drive the disc to descend. The disc drives the rotating ball to tilt in the rotating seat. When the disc tilts, the baffle is driven to tilt through the second electric telescopic rod, and the baffle drives the mold to tilt. The downward tilting side of the mold will stretch the tension spring, and the tension spring on the other side of the mold will adjust itself. At this time, under the action of the tension spring, the mold will fit tightly with the baffle, and the polymer liquid in the mold will flow, which is helpful for the polymer liquid to flow to every detail area of ​​the mold, so that the bubbles are discharged and the polymer liquid fits the mold surface, ensuring the shape and size of the final product.

[0023] 2. The present invention is provided with a curing lamp. When the mold drives the polymer liquid to shake, the curing lamp irradiates the internal polymer liquid through the mold. Since the irradiation is performed from bottom to top, the curing lamp will first irradiate and cure the raised parts of the microlens array. When the polymer liquid shrinks during the curing process, the internal polymer liquid flows and automatically fills the gap between the curing part and the mold, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 3 for Figure 1 Schematic diagram from another perspective;

[0027] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0028] Figure 5 It is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 6 for Figure 5 The enlarged schematic diagram of the center C;

[0030] Figure 7 for Figure 5 The enlarged schematic diagram of point D in the middle;

[0031] Figure 8 FIG. 4 is a top view of the microlens array of the present invention.

[0032] In the figure: 1, support plate; 2, fixing frame; 3, base; 4, control panel; 5, first electric telescopic rod; 6, curing lamp; 7, baffle; 8, tension spring; 9, disc; 10, bump; 11, rotating seat; 12, first ring; 13, first round rod; 14, extrusion rod; 15, ball; 16, through hole; 17, mold; 18, second electric telescopic rod; 19, second round rod; 20, third round rod; 21, first slide groove; 22, second slide groove; 23, second ring; 24, round pin; 25, rotating ball; 26, groove; 27, pipeline; 28, microlens array. DETAILED DESCRIPTION

[0033] See also Figures 1 to 8 The present invention provides a technical solution: an array microlens preparation device, comprising a base 3, a fixing frame 2 and a support plate 1 located above the base 3, and also comprising:

[0034] The filling mechanism includes a pipe 27, one side of the pipe 27 is connected to the mold 17, and the side of the pipe 27 away from the mold 17 is installed on the base 3, and the outer wall of the mold 17 is evenly installed with a plurality of tension springs 8 along its circumference, and the side of the tension spring 8 away from the mold 17 is installed on the fixed frame 2; the polymer liquid is transported into the mold 17 through the pipe 27;

[0035] The curing mechanism includes a shaking assembly, a baffle 7 and a curing lamp 6. A second electric telescopic rod 18 is installed on the upper end surface of the baffle 7. A disc 9 is installed on the upper end surface of the second electric telescopic rod 18. A rotating ball 25 is installed on the upper end surface of the disc 9. A rotating seat 11 is sleeved on the outer wall of the rotating ball 25. The second electric telescopic rod 18 drives the baffle 7 to descend. After the baffle 7 abuts against the mold 17, it drives the mold 17 to descend, thereby stretching the tension spring 8 on the mold 17. At this time, the shaking assembly drives the rotating ball 25 to rotate in the rotating seat 11 through the disc 9. The disc 9 drives the mold 17 to shake under the action of the second electric telescopic rod 18 and the baffle 7. At the same time, the curing lamp 6 irradiates the polymer liquid in the mold 17.

[0036] The shaking assembly includes a third round rod 20 and a plurality of protrusions 10 installed on the upper end surface of the disc 9, the outer wall of the third round rod 20 is provided with a second slide groove 22, the inner wall of the second slide groove 22 is slidably installed with a round pin 24, the first round ring 12 is installed on the side of the round pin 24 away from the second slide groove 22, the upper end surface of the first round ring 12 is rotatably installed with a second round ring 23, the upper end surface of the second round ring 23 is symmetrically installed with a second round rod 19, the upper end surface of the second round rod 19 is installed on the support plate 1, the outer wall of the first round ring 12 is installed with an extrusion rod 14, and the lower end surface of the extrusion rod 14 is rotatably installed with a ball 15; when the third round rod 20 drives the second slide groove 22 to descend, the second slide groove 22 squeezes the round pin 24, and the round pin 24 drives the first round ring 12 to rotate below the second round ring 23, and at the same time, the first round ring 12 drives the ball 15 to squeeze the protrusion 10 above the disc 9 through the extrusion rod 14;

[0037] Furthermore, the lower end surface of the mold 17 is made of a transparent material that does not block ultraviolet rays;

[0038] The curing lamp 6 emits light through the mold 17 to irradiate the internal polymer liquid;

[0039] Further, such as Figure 6 and Figure 2 As shown, the upper end surface of the mold 17 is provided with a groove 26 adapted to the baffle 7, and a through hole 16 is provided at the connection between the mold 17 and the pipe 27;

[0040] The baffle 7 abuts against the groove 26 to close the mold 17, and then the polymer liquid can be continuously transported into the mold 17 through the through hole 16. When the polymer liquid solidifies and shrinks in volume, the polymer liquid can be automatically filled;

[0041] Further, such as Figure 3 and Figure 4 As shown, the upper end surface of the third round rod 20 passes through the support plate 1 and is equipped with a first electric telescopic rod 5;

[0042] The first electric telescopic rod 5 drives the third round rod 20 to rise or fall;

[0043] Further, such as Figure 4 As shown, a plurality of first round rods 13 are evenly mounted on the lower end surface of the first circular ring 12 along its circumference, and the first round rods 13 are fixedly connected to the rotating seat 11 at a side away from the first circular ring 12;

[0044] When the first ring 12 rotates, the rotating seat 11 is driven to rotate outside the rotating ball 25 through the first round rod 13;

[0045] Further, such as Figure 6 As shown, the first circular ring 12 and the second circular ring 23 are both provided with openings at their centers;

[0046] The third round rod 20 moves up and down at the opening;

[0047] Further, such as Figure 1 As shown, a control panel 4 is installed on the outer wall of the base 3;

[0048] The control panel 4 is used to set the relevant parameters of the device;

[0049] Further, such as Figure 4 As shown, the outer wall of the third round rod 20 is provided with a first slide groove 21, and the first slide groove 21 is connected with the second slide groove 22, and the second slide groove 22 is spiral;

[0050] When the second slide groove 22 slides outside the round pin 24, the round pin 24 drives the first ring 12 to rotate. When the round pin 24 enters the first slide groove 21 from the second slide groove 22, the round pin 24 no longer drives the first ring 12 to rotate.

[0051] In this embodiment, the array microlens preparation process comprises the following steps:

[0052] The first step: connect the polymer liquid supply pipe to the outside through the pipeline 27, and then transport a proper amount of polymer liquid into the mold 17 (taking quartz glass as an example) through the through hole 16;

[0053] Step 2: Control the second electric telescopic rod 18 to descend through the control panel 4, and the second electric telescopic rod 18 drives the baffle 7 to descend. The baffle 7 first abuts against the groove 26 on the mold 17. As the second electric telescopic rod 18 continues to extend, the baffle 7 drives the mold 17 to continue to move downward. At this time, the mold 17 stretches the outer tension spring 8 until the second electric telescopic rod 18 is fully extended.

[0054] Step 3: When the mold 17 stops moving, the mold 17 completes the stretching of the tension spring 8. At this time, the control panel 4 controls the first electric telescopic rod 5 to descend, and the first electric telescopic rod 5 drives the third round rod 20 to descend at the opening of the second ring 23 and the first ring 12. The third round rod 20 drives the first chute 21 and the second chute 22 to descend. At this time, the second chute 22 squeezes the round pin 24, and the round pin 24 drives the first ring 12 to rotate under the second ring 23. When the first ring 12 rotates, it drives the extrusion rod 14 to rotate, and the extrusion rod 14 drives the ball 15 to rotate, and the ball 15 squeezes the bump 10 on the disc 9 in turn;

[0055] When the convex block 10 is squeezed by the ball bearing 15, the convex block 10 will drive the disc 9 to descend, and the disc 9 will drive the rotating ball 25 to tilt in the rotating seat 11. When the disc 9 tilts, the baffle 7 is driven to tilt through the second electric telescopic rod 18, and the baffle 7 drives the mold 17 to tilt. The downward tilting side of the mold 17 will stretch the tension spring 8, and the tension spring 8 on the other side of the mold 17 will adjust itself. At this time, under the action of the tension spring 8, the mold 17 will fit tightly with the baffle 7, and the polymer liquid in the mold 17 will flow. As the convex block 10 is squeezed by the ball bearing 15 in turn, the disc 9 will drive the rotating ball 25 to tilt in the circumferential direction in the rotating seat 11, so that the polymer liquid in the mold 17 flows evenly;

[0056] When the first electric telescopic rod 5 descends, the control panel 4 controls the curing lamp 6 to irradiate. At this time, the curing lamp 6 irradiates the internal polymer liquid through the mold 17. Since the irradiation is performed from bottom to top, the curing lamp 6 irradiates and cures the raised portion of the microlens array 28. When the polymer liquid shrinks during the curing process, the internal polymer liquid flows and automatically fills the gap between the cured portion and the mold 17, thereby effectively compensating for the shrinkage rate. When the mold 17 drives the polymer liquid to shake, it helps the polymer liquid to flow to every detail area of ​​the mold 17, thereby discharging bubbles and making the polymer liquid fit to the surface of the mold 17, ensuring the shape and size of the final product. As the third round rod 20 descends, when the round pin 24 enters the first slide groove 21 from the second slide groove 22, the first ring 12 no longer rotates, thereby driving the ball 15 to stop rotating through the extrusion rod 14, and the ball 15 no longer squeezes the protrusion 10. At this time, under the action of the tension spring 8, the mold 17 remains horizontal until the curing lamp 6 completes the curing of the polymer liquid in the mold 17. Then, the first electric telescopic rod 5 and the second electric telescopic rod 18 are controlled to contract in sequence, and finally the baffle 7 and the mold 17 are separated, and the microlens array 28 can be removed.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An array microlens preparation device, comprising a base (3), a fixing frame (2) located above the base (3) and a support plate (1), characterized in that: Also includes: A filling mechanism comprises a pipe (27), one side of the pipe (27) is connected to a mold (17), a plurality of tension springs (8) are evenly installed along the circumference of the outer wall of the mold (17), and the side of the tension spring (8) away from the mold (17) is installed on a fixed frame (2); polymer liquid is transported into the mold (17) through the pipe (27); The curing mechanism comprises a shaking assembly, a baffle (7) and a curing lamp (6); a second electric telescopic rod (18) is mounted on the upper end surface of the baffle (7); a disc (9) is mounted on the upper end surface of the second electric telescopic rod (18); a rotating ball (25) is mounted on the upper end surface of the disc (9); a rotating seat (11) is sleeved on the outer wall of the rotating ball (25); the second electric telescopic rod (18) drives the baffle (7) to descend, and after the baffle (7) abuts against the mold (17), it drives the mold (17) to descend, thereby stretching the tension spring (8) on the mold (17); at this time, the shaking assembly drives the rotating ball (25) to rotate in the rotating seat (11) through the disc (9); the disc (9) drives the mold (17) to shake under the action of the second electric telescopic rod (18) and the baffle (7), and at the same time, the curing lamp (6) irradiates the polymer liquid in the mold (17); The shaking assembly comprises a third round rod (20) and a plurality of protrusions (10) mounted on the upper end surface of a disc (9); the outer wall of the third round rod (20) is provided with a second slide groove (22); a round pin (24) is slidably mounted on the inner wall of the second slide groove (22); a first circular ring (12) is mounted on the side of the round pin (24) away from the second slide groove (22); a second circular ring (23) is rotatably mounted on the upper end surface of the first circular ring (12); a second round rod (19) is symmetrically mounted on the upper end surface of the second circular ring (23); and the second circular rod ( 19) The upper end surface is installed on the support plate (1), the outer wall of the first circular ring (12) is installed with an extrusion rod (14), and the lower end surface of the extrusion rod (14) is rotatably installed with a ball (15); when the third circular rod (20) drives the second slide groove (22) to descend, the second slide groove (22) squeezes the round pin (24), and the round pin (24) drives the first circular ring (12) to rotate under the second circular ring (23). At the same time, the first circular ring (12) drives the ball (15) to squeeze the protrusion (10) above the disc (9) through the extrusion rod (14).

2. The array microlens preparation device according to claim 1, characterized in that: The lower end surface of the mold (17) is made of a transparent material that does not block ultraviolet rays.

3. The array microlens preparation device according to claim 1, characterized in that: The upper end surface of the mold (17) is provided with a groove (26) adapted to the baffle (7), and a through hole (16) is provided at the connection point between the mold (17) and the pipeline (27).

4. The array microlens preparation device according to claim 1, characterized in that: The upper end surface of the third round rod (20) passes through the support plate (1) and is provided with a first electric telescopic rod (5).

5. The array microlens preparation device according to claim 1, characterized in that: A plurality of first round rods (13) are evenly mounted on the lower end surface of the first circular ring (12) along its circumference, and the first circular rods (13) are fixedly connected to the rotating seat (11) at a side away from the first circular ring (12).

6. The array microlens preparation device according to claim 1, characterized in that: The first circular ring (12) and the second circular ring (23) are both provided with openings at their centres.

7. The array microlens preparation device according to claim 1, characterized in that: A control panel (4) is mounted on the outer wall of the base (3).

8. The array microlens preparation device according to claim 1, characterized in that: The outer wall of the third round rod (20) is provided with a first sliding groove (21), and the first sliding groove (21) is connected to the second sliding groove (22).

9. A process for preparing an array microlens, using the array microlens preparation device according to claim 1, characterized in that: The following steps are involved: The first step: firstly, a proper amount of polymer liquid is transported into the mold (17) through the pipeline (27); Step 2: The second electric telescopic rod (18) descends, driving the baffle (7) to descend, the baffle (7) first abuts against the mold (17), and then drives the mold (17) to stretch the tension spring (8) until the second electric telescopic rod (18) is fully extended; Step 3: After the mold (17) has completed stretching the tension spring (8), the curing lamp (6) starts working to irradiate the polymer liquid in the mold (17). At the same time, the third round rod (20) drives the second slide groove (22) to descend, the second slide groove (22) squeezes the round pin (24), and the round pin (24) drives the first ring (12) to rotate under the second ring (23). The first ring (12) drives the ball (15) to squeeze the protrusion (10) above the disc (9) in turn through the squeezing rod (14). The disc (9) rotates under the rotating seat (11) through the rotating ball (25). At this time, the disc (9) drives the mold (17) to shake under the action of the second electric telescopic rod (18) and the baffle (7), so that the polymer liquid is evenly distributed in the mold (17).

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