CN209648361U

CN209648361U - A kind of upper disk mold for optical manufacturing

Info

Publication number: CN209648361U
Application number: CN201920294895.2U
Authority: CN
Inventors: 杨树柏; 刘康; 何良谷
Original assignee: Shanghai Wei Zhao Optics Science And Technology Co Ltd
Current assignee: Shanghai Millimeter Star Optical Co ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2019-11-19
Anticipated expiration: 2029-03-08

Abstract

The utility model discloses a kind of upper disk molds for optical manufacturing.On this disk mold include: die main body, at least two first accompany mill enclose piece, at least one second mill is accompanied to enclose piece, at least one extruding plate and fastener；Wherein, it is provided with groove in the middle part of die main body, densely arranged in groove to have lenticule raw material, lenticule raw material is cylindrical, and spherical surface one end of lenticule raw material is close to groove, one end to be ground far from groove；At least two first, which accompany mill to enclose piece, is attached on die main body, and second accompanies mill to enclose number of the number equal to extruding plate of piece, and second accompanies mill to enclose piece under the extruding of extruding plate, accompanies mill to enclose piece at least two first and is arranged around groove, for fixing lenticule raw material；Fastener, for extruding plate to be fixed on die main body.Disk mold can be improved the processing efficiency of lenticule raw material on this, reduce production cost, readily available better abradant surface type.

Description

Upper disc die for optical processing

Technical Field

The embodiment of the utility model provides a relate to optics processing technology field, especially relate to an upper plate mould for optics processing.

Background

The C-Lens is a cylindrical micro plano-convex Lens which axially passes light, one end of each of two ends of the cylindrical micro plano-convex Lens is a spherical surface, and the other end of the cylindrical micro plano-convex Lens is a plane, so that the cylindrical micro plano-convex Lens is widely applied to manufacturing of optical devices such as optical fiber communication, endoscopes and laser radars. Typical dimensions are: the diameter is 1.40mm, the axial length is 2.00mm, one end is a spherical surface of R1.500, and the other end is a plane inclined at an angle of 8 degrees with the axial line.

In the existing process of manufacturing the C-Lens, one end of a microlens raw material is firstly ground into a spherical surface, and then the other end is subjected to plane grinding. In order to improve the work efficiency and increase the grinding area for obtaining a better grinding surface shape, the plane grinding is generally performed by arranging microlens raw materials in a bundle-shaped manner to form a module group, and a plurality of module groups are integrally fixed on a polishing disk for grinding.

However, the volume of the raw material for manufacturing the C-Lens is small, and if the single-piece clamping is carried out by only manually using tweezers to form a module, the clamping process is time-consuming and labor-consuming; meanwhile, in order to ensure that the tolerance of the included angle between the end face of the Lens and the axis after the C-Lens grinding is within a preset range (for example, the tolerance is within +/-0.5 degrees), under the limitation of a clamping arrangement principle, the clamping quantity of the raw materials of the micro-lenses in one module is usually not more than 100, so that the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides an upper plate mould for optical processing can improve the machining efficiency of microlens raw materials, and reduction in production cost is convenient for obtain better ground face type.

In a first aspect, an embodiment of the present invention provides an upper plate mold for optical processing, including: the die comprises a die body, at least two first accompanying grinding surrounding sheets, at least one second accompanying grinding surrounding sheet, at least one extrusion sheet and a fastener; wherein,

a groove is formed in the middle of the die main body, microlens raw materials are densely distributed in the groove, the microlens raw materials are cylindrical, one end of the spherical surface of the microlens raw materials is close to the groove, and the end to be ground is far away from the groove;

the at least two first accompanying grinding surrounding pieces are attached to the die main body, the number of the second accompanying grinding surrounding pieces is equal to the number of the extrusion pieces, and the second accompanying grinding surrounding pieces and the at least two first accompanying grinding surrounding pieces are arranged around the groove under the extrusion of the extrusion pieces and are used for fixing the micro-lens raw materials;

and the fastener is used for fixing the extrusion sheet on the die main body.

Optionally, the raw materials of the micro-lenses are arranged in the grooves in a honeycomb or honeycomb-like self-adaptive dense manner.

Optionally, the groove is rectangular, the number of the first accompanying grinding surrounding sheets is two, the number of the second accompanying grinding surrounding sheets is two, and the number of the extrusion sheets is two;

the two first grinding accompanying sheets are arranged along a first direction and a second direction respectively; two second accompany and grind the piece and set up along first direction and second direction respectively, and first direction is perpendicular with the second direction.

Optionally, the included angle between the first accompanying grinding surrounding sheet and the perpendicular line of the bottom plane of the groove and the included angle between the second accompanying grinding surrounding sheet and the perpendicular line of the bottom plane of the groove are 0 degree; the included angle between the first accompanying grinding surrounding sheet and the second accompanying grinding surrounding sheet arranged along the second direction and the perpendicular line of the bottom plane of the groove is in the range of 0-20 degrees.

Optionally, the recess is triangle-shaped, and the number of first accompanying grinding enclosing piece is two, and the number of second accompanying grinding enclosing piece is one, and the number of extrusion piece is one.

The utility model provides an upper plate mould for optical processing, upper plate mould include that mould main part, at least two first accompany grind enclose piece, at least one second accompany grind enclose piece, at least one extrusion piece and fastener. Through the microlens raw materials of arranging densely in the recess at the mould main part to utilize the second to accompany and grind the surrounding piece and first to accompany and grind the fixed microlens raw materials of surrounding piece, make the microlens raw materials self-adaptation arrange densely in the recess, form the microlens module so that subsequent grinding. The micro-lens raw material is clamped by the manipulator, so that the mode of manually clamping a single piece by using tweezers is changed, and the clamping time is saved; in addition, the microlens raw materials are arranged in the groove in a self-adaptive and dense mode, the number of the microlens raw materials of one module can be far larger than 100 existing microlens raw materials, for example, the number of the microlens raw materials with the diameter of 1.4mm can reach 300 to 400, the grinding surface type can be guaranteed, meanwhile, the processing efficiency of the microlens raw materials is improved, and the production cost is reduced.

Drawings

Fig. 1 is a schematic top view of an upper plate mold for optical processing according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of an upper disc mold for optical processing along the direction AA' in fig. 1 according to an embodiment of the present invention;

fig. 3 is a schematic top view of another upper disc mold for optical processing according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial arrangement of a microlens raw material according to an embodiment of the present invention;

fig. 5 is a schematic view of a partial arrangement of another microlens raw material according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional structure view of an upper disc mold for optical processing, taken along the direction BB' in fig. 1 according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional structure view of another upper disc mold for optical processing, taken along direction BB' in fig. 1 according to an embodiment of the present invention;

fig. 8 is a schematic top view of a plate loading device according to an embodiment of the present invention;

fig. 9 is a schematic flow chart illustrating a method for forming a microlens module on an upper plate mold for optical processing according to an embodiment of the present invention;

fig. 10 is a schematic flow chart illustrating another method for forming a microlens module on an upper plate mold for optical processing according to an embodiment of the present invention;

fig. 11 is a schematic top view of a polishing pad according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Also, the drawings and description of the embodiments are to be regarded as illustrative in nature, and not as restrictive. Like reference numerals refer to like elements throughout the specification. In addition, the size of some of the structures, regions, etc. may be exaggerated in the drawings for understanding and ease of description. Additionally, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

In the embodiments of the present invention, the various components are described by "first", "second", and the like, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Also, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

While certain embodiments may be practiced differently, the specific process sequence may be performed differently than described. For example, two processes described consecutively may be performed at substantially the same time or in an order reverse to that described.

Hereinafter, a tray mold for optical processing, a method of forming a microlens module on the tray mold, and technical effects thereof will be described in detail.

Fig. 1 is a schematic top view of an upper plate mold for optical processing according to an embodiment of the present invention. This hanging wall mould includes: the die comprises a die body 10, at least two first accompanying grinding surrounding sheets 11, at least one second accompanying grinding surrounding sheet 12, at least one extrusion sheet 13 and a fastener 14. The upper disc mold shown in fig. 1 is drawn by taking two first grinding accompanying sheets 11, two second grinding accompanying sheets 12 and two pressing sheets 13 as an example.

As shown in fig. 1, a groove (an area marked by a dashed line frame in fig. 1) is formed in the middle of the mold main body 10, the bottom of the groove is a plane, the groove is rectangular, and the microlens raw materials 20 are clamped by a manipulator (not shown in fig. 1) of the tray loading device, so that the microlens raw materials 20 are densely arranged in the groove. Specifically, fig. 2 shows a schematic cross-sectional structure of an upper disc mold for optical processing along the AA' direction in fig. 1 according to an embodiment of the present invention. As shown in fig. 2, the microlens material 20 is cylindrical, one spherical end of the microlens material is close to the groove, and the end to be ground is far away from the groove, and the microlens material 20 is sequentially placed in the groove by a manipulator according to a certain sequence.

As can be seen from fig. 1 and 2, two first accompanying grinding sheets 11 are attached to the die main body 10, and in addition, the two first accompanying grinding sheets 11 can be detached from the die main body 10, and the two first accompanying grinding sheets 11 are respectively arranged along a first direction X and a second direction Y; the first direction X is perpendicular to the second direction Y.

The number of the second accompanying grinding surrounding pieces 12 is equal to the number of the extrusion pieces 13, and the two second accompanying grinding surrounding pieces 12 are respectively arranged along the first direction X and the second direction Y. The two second accompanying grinding surrounding sheets 12 are pressed by the two pressing sheets 13, respectively, and the pressing sheets 13 may press the second accompanying grinding surrounding sheets 12 along the pressing grooves on the die body 10, for example, so that the two second accompanying grinding surrounding sheets 12 move to the grooves, respectively.

Fig. 3 is a schematic top view of another upper disc mold for optical processing according to an embodiment of the present invention. As shown in fig. 3, after the two second peripheral sheets 12 are pressed in place, the two second peripheral sheets 12 and the two first peripheral sheets 11 are finally disposed around the groove to form a rectangular frame for fixing the microlens raw material 20.

And a fastening member 14 for fixing the pressing piece 13 to the die main body 10.

Alternatively, the fastener 14 may be a screw, or may be a bolt and nut.

Further, the microlens raw materials 20 are arranged in the grooves in a honeycomb or honeycomb-like self-adaptive dense mode, and hundreds of lenses can be guaranteed to be squeezed at the same time, so that the grinding surface type is guaranteed, the processing efficiency of the microlens raw materials is improved, and the production cost is reduced.

Alternatively, if the diameter of the microlens material 20 is in the range of 1.40mm to 2.00mm, the number of microlens materials in the grooves may be 300 to 400. It can be understood that, for the microlens raw materials 20 of different specifications, the number of the microlens raw materials that can be placed in the groove can be changed, and the embodiment of the present invention does not specifically limit this.

In addition, at least two first peripheral grinding pieces 11, at least one second peripheral grinding piece 12 and the micro-lens raw materials 20 densely arranged in the grooves can be fixed and bonded into a whole and then taken down from the upper disc mold, and the whole can be called as a micro-lens module.

Fig. 4 shows a schematic diagram of a partial arrangement of a microlens raw material according to an embodiment of the present invention. As shown in fig. 4, the microlens raw materials 20 are arranged in the grooves in a honeycomb-shaped self-adaptive dense arrangement, that is, the microlens raw materials 20-1, 20-2, 20-3 and 20-4 are arranged in a row, the microlens raw materials 20-5, 20-6 and 20-7 are arranged in another row, and the rows of the microlens raw materials are staggered and abutted, so that the arrangement can make the microlens raw material in the center obtain 6-direction dependence from the periphery, the squeezing posture is easy to control, and the grinding angle of the microlens raw materials is convenient to ensure.

Considering that there is diameter tolerance between the microlens raw materials and the problem that the arrangement shown in fig. 4 has the limited number of lens clamps of a single module, fig. 5 shows a schematic view of local arrangement of another microlens raw material provided by the embodiment of the present invention. As shown in FIG. 5, the microlens raw materials 20 are arranged in the grooves in a honeycomb-like self-adaptive dense arrangement, i.e., the microlens raw materials 20-1, 20-2, 20-3 and 20-4 are arranged in a row, the microlens raw materials 20-5, 20-6 and 20-7 are arranged in another row, the rows of the microlens raw materials are staggered and abutted, and a micro gap is formed between the microlens raw materials in the same row. Illustratively, the diameter of the microlens material is 1.8 ± 0.005mm, a minute gap (e.g., 0.02mm) exists between the microlens material 20-1 and the microlens material 20-2, a minute gap also exists between the microlens material 20-2 and the microlens material 20-3, the microlens material 20-5 may be squeezed between the microlens material 20-1 and the microlens material 20-2, and the microlens material 20-6 may be squeezed between the microlens material 20-2 and the microlens material 20-3, thereby producing an effect of adaptive squeezing. The gap between the microlens material 20-1 and the microlens material 20-2 may be different in size from the gap between the microlens material 20-2 and the microlens material 20-3. The arrangement can ensure that the micro-lens raw materials with diameter tolerance can be tightly leaned against four micro-lens raw materials which are adjacent up and down, thereby ensuring that the whole micro-lens module can be tightly extruded. And when guaranteeing the microlens raw materials angle of grinding, increased the lens clamping quantity of single module.

It should be noted that the upper plate die provided by the embodiment of the present invention can be used for manufacturing C-Lens with various specifications. As can be seen from fig. 2, the included angle between the first and second accompanying grinding surrounding sheets 11 and 12 arranged along the first direction X and the perpendicular line of the bottom plane of the groove is 0 °.

The included angle between the first accompanying grinding surrounding piece 11 and the second accompanying grinding surrounding piece 12 arranged along the second direction Y and the perpendicular line of the bottom plane of the groove is in the range of 0-20 degrees. Illustratively, the first and second accompanying grinding surrounding sheets 11 and 12 arranged along the second direction Y have different included angles with the perpendicular line of the groove bottom plane, and planes with different inclined angles with the axis can be manufactured, such as 0 °, 4 °, 8 ° or 9 °.

Use along the first accompanying grinding surrounding piece 11 and the second of second direction Y setting to accompany the contained angle of grinding surrounding piece 12 and recess basal plane plumb line and be 0 as an example, fig. 6 shows the utility model discloses an upper plate mould for optical machining along the cross-sectional structure sketch map of BB' direction in fig. 1 who provides. In consideration of the tolerance of each part of the upper disc die, the included angle between the first and second accompanying grinding surrounding sheets 11 and 12 arranged along the second direction Y and the perpendicular line of the bottom plane of the groove can be +/-0.2 degrees, the angle tolerance of the die main body 10 can be +/-0.05 degrees, so that the verticality between the flat end surface of the C-Lens and the axial direction of the C-Lens after the grinding is guaranteed to be +/-0.5 degrees, namely the included angle between the flat end surface of the C-Lens and the axial direction of the C-Lens is 89.5 degrees to 90.5 degrees.

Use along the first accompanying grinding surrounding piece 11 and the second accompanying grinding surrounding piece 12 that second direction Y set up and the contained angle of recess basal plane plumb line be 8 for the example, fig. 7 shows that another kind of last wall mold for optical machining who provides is along the cross-sectional structure sketch map of BB' direction in fig. 1. In consideration of the tolerance of each part of the upper disc die, the included angle between the first and second grinding accompanying surrounding sheets 11 and 12 arranged along the second direction Y and the perpendicular line of the bottom plane of the groove can be 8.0 +/-0.2 degrees, so that the included angle between the flat end surface of the C-Lens after grinding and the axial direction of the C-Lens is ensured to be in the range of 81.5 degrees to 82.5 degrees. In addition, as can be seen from fig. 7, the included angle between the groove edge of the mold main body 10 and the perpendicular line of the bottom plane of the groove is also 8 °, the tolerance is horizontal at ± 0.05 °, and the angle accuracy of the first accompanying grinding surrounding sheet 11 and the second accompanying grinding surrounding sheet 12 after being attached to the groove of the mold main body 10 is ensured.

It should be noted that the heights of the first and second companion sheets 11 and 12 and the microlens raw material 20 are slightly higher than the heights of the mold body 10, the pressing sheet 13 and the fastening member 14 to facilitate grinding.

In addition, the shape of the groove may be triangular in addition to the rectangular shape described in the above embodiments. For example, if the groove is triangular, the number of the first accompanying grinding surrounding sheets 11 may be two, the number of the second accompanying grinding surrounding sheets 12 may be one, and the number of the pressing sheets 13 may also be one.

The utility model provides an upper plate mould for optical machining, accompany and grind including mould main part, two at least first, at least one second and enclose piece, at least one extrusion piece and fastener. Through the microlens raw materials of arranging densely in the recess at the mould main part to utilize the second to accompany and grind the surrounding piece and first to accompany and grind the fixed microlens raw materials of surrounding piece, make the microlens raw materials self-adaptation arrange densely in the recess, form the microlens module so that subsequent grinding. The micro-lens raw material is clamped by the manipulator, so that the mode of manually clamping a single piece by using tweezers is changed, and the clamping time is saved; in addition, the microlens raw materials are arranged in the groove in a self-adaptive and dense mode, the number of the microlens raw materials of one module can be far larger than the number of the existing about 100 microlens raw materials, for example, the number of the microlens raw materials with the diameter of 1.4mm can reach 300 to 400, the grinding surface type can be guaranteed, meanwhile, the processing efficiency of the microlens raw materials is improved, and the production cost is reduced.

Fig. 8 shows a schematic top view structure diagram of a tray loading device provided by an embodiment of the present invention. This hanging wall equipment includes: an upper disc mold 1 for optical processing, a raw material box 2, a manipulator 3 and a handling device 4.

As can be seen from fig. 8, the upper tray mold 1 for optical processing can be moved in the Y-axis direction on the upper tray device by the upper tray mold translation guide 50, the raw material cartridge 2 can be moved in the Y-axis direction on the upper tray device by the raw material cartridge translation guide 51, the robot 3 can be moved in the X-axis direction on the upper tray device by the robot translation guide 52, the robot 3 can also be moved in the Z-axis direction on the upper tray device by the robot translation guide 53, the robot 3 includes the suction nozzle 30, and the suction nozzle 30 can suck the raw material for the microlenses one by one from the raw material cartridge 2 and place the raw material for the microlenses in the groove in the middle of the mold main body 1. Optionally, the disc loading device is controlled by a Programmable Logic Controller (PLC), and may further include buttons equipped with start and stop functions.

Fig. 9 is a schematic flow chart illustrating a method for forming a microlens module on an upper plate mold for optical processing according to an embodiment of the present invention, which is suitable for the upper plate mold for optical processing described in the above embodiment, and the upper plate mold includes: the mould comprises a mould body, at least two first accompanying grinding surrounding sheets, at least one second accompanying grinding surrounding sheet, at least one extrusion sheet and a fastener. The method comprises the following steps:

s101, absorbing the microlens raw materials one by one from the raw material box, and placing the microlens raw materials in a groove in the middle of the die main body, wherein the microlens raw materials are cylindrical, one spherical end of the microlens raw materials is close to the groove, and the end to be ground is far away from the groove.

Specifically, the feeding device drives the suction nozzle to suck the micro-lens raw materials one by one from the raw material box by using a movable manipulator, and the micro-lens raw materials are placed in the groove in the middle of the die main body. For example, one material box can hold 100 microlens materials, the microlens materials are Lens blanks with one end of a spherical surface polished and the other end to be ground into a plane, the length of the microlens materials can be 4mm, and the microlens materials are to be ground into C-Lens with the length meeting the specification (such as 2 mm).

Optionally, when the movable manipulator drives the suction nozzle to suck the micro-lens raw materials one by one from the raw material box, the postures of the micro-lens raw materials are not vertical but have inclination angles, the direction of the suction nozzle also has inclination angles, and the postures of the micro-lens raw materials put into the groove of the die main body are also inclined, so that the success rate of taking and placing the micro-lens raw materials is ensured.

S102, after the micro-lens raw materials are placed, at least one second accompanying grinding surrounding piece and at least one extrusion piece are installed, the second accompanying grinding surrounding piece and at least two first accompanying grinding surrounding pieces are arranged around the groove under the extrusion of the extrusion piece, so that the micro-lens raw materials are arranged in a self-adaptive and dense mode, and the number of the second accompanying grinding surrounding pieces is equal to the number of the extrusion pieces.

Put the back that finishes at the microlens raw materials, can utilize manipulator or manual work to place at least one second and accompany and grind the surrounding sheet to promote the extrusion piece, make the second accompany and grind the surrounding sheet and surround the piece with two at least first company under the extrusion of extrusion piece and surround the recess setting, at this in-process, the microlens raw materials can the self-adaptation arrange densely.

Specifically, the microlens raw materials are arranged in the grooves in a honeycomb or honeycomb-like self-adaptive dense mode, the grinding surface type can be guaranteed, meanwhile, the machining efficiency of the microlens raw materials is improved, and the production cost is reduced.

S103, mounting a fastener, and fixing the extrusion sheet on the die main body.

On the basis of the above embodiments of the present invention, fig. 10 shows a schematic flow chart of another method for forming a microlens module on an upper disc mold for optical processing, which includes steps S104 or S105 and S106, in addition to steps S101 to S103:

and S104, placing the upper disc mould on a polishing disc for grinding.

Step S104 is applicable to a scene where the entire upper disc mold is placed on the polishing disc for polishing. In this scenario, in order to improve the polishing efficiency, a plurality of upper disc molds may be placed on the polishing disc to be polished together.

And S105, coating a fixing material on the at least two first peripheral grinding sheets, the at least one second peripheral grinding sheet and the microlens raw material.

The fixing material is any one or combination of more of beeswax, rosin, paraffin, epoxy resin, phenolic resin, polyimide, polymethacrylate and polyurethane.

S106, taking down the micro-lens module consisting of the at least two first peripheral grinding wafers, the at least one second peripheral grinding wafer and the micro-lens raw material from the upper disc mold, and placing the micro-lens module on a polishing disc for grinding.

Steps S105 and S106 are applicable to a scene in which only the first and second companion polishing sheets and the microlens raw material are placed on the polishing platen for polishing. In this scenario, in order to improve the polishing efficiency, a plurality of microlens modules may be placed on the polishing platen for polishing. Fig. 11 is a schematic top view of a polishing disk according to an embodiment of the present invention. As can be seen from fig. 11, a plurality of microlens modules 61 are disposed on the polishing platen 60, and thousands of lenses can be polished at the same time.

Accordingly, after the grinding is completed, the fixing material coated on the at least two first peripheral grinding plates, the at least one second peripheral grinding plate and the microlens raw material is removed to obtain the processed C-Lens.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An upper disc mold for optical machining, comprising: the die comprises a die body, at least two first accompanying grinding surrounding sheets, at least one second accompanying grinding surrounding sheet, at least one extrusion sheet and a fastener; wherein,

a groove is formed in the middle of the die main body, microlens raw materials are densely distributed in the groove, the microlens raw materials are cylindrical, one spherical end of each microlens raw material is close to the groove, and the end to be ground is far away from the groove;

at least two first accompanying grinding surrounding sheets are attached to the die main body, the number of the second accompanying grinding surrounding sheets is equal to that of the extrusion sheets, and the second accompanying grinding surrounding sheets and the at least two first accompanying grinding surrounding sheets are arranged around the groove under the extrusion of the extrusion sheets and are used for fixing the micro-lens raw material;

the fastener is used for fixing the extrusion sheet on the die main body.

2. The upper disc mold of claim 1, wherein the microlens material is in a honeycomb or honeycomb-like adaptive dense arrangement within the grooves.

3. The upper disc die as claimed in claim 1 or 2, wherein the groove is rectangular, the number of the first grinding accompanying sheets is two, the number of the second grinding accompanying sheets is two, and the number of the pressing sheets is two;

the two first grinding accompanying surrounding sheets are arranged along a first direction and a second direction respectively; the two second grinding accompanying sheets are arranged along the first direction and the second direction respectively, and the first direction is perpendicular to the second direction.

4. The upper disc mold according to claim 3, wherein the first and second accompanying grinding surrounding pieces arranged in the first direction form an angle of 0 ° with the perpendicular line of the bottom plane of the groove; the included angle between the first accompanying grinding surrounding piece and the perpendicular line of the second accompanying grinding surrounding piece and the bottom plane of the groove, which are arranged along the second direction, is in the range of 0-20 degrees.

5. The upper disc mold according to claim 1 or 2, wherein the groove is triangular, the number of the first grinding accompanying sheets is two, the number of the second grinding accompanying sheets is one, and the number of the pressing sheets is one.