TWI608931B - Optical lens manufacturing method, manufacturing die and product thereof - Google Patents

Description

Optical lens manufacturing method, manufacturing mold and product thereof

The invention relates to an optical lens manufacturing method, a manufacturing mold and a product thereof, in particular to an optical lens manufacturing method, a manufacturing mold and a product thereof which have an average force application, a deformation resistance and a high yield.

According to the manufacturing mold for manufacturing an optical lens, a pedestal, a lower module and an upper module are mainly disposed on the top surface, and the ejector pin is disposed on the top surface, and the lower module can be mounted thereon. The lower mold is disposed above the base and is provided with a lower mold, a lower mold core and a perforation. The lower mold is laterally disposed above the base and has a lower flow path on the top surface. In the lower mold and the top surface thereof is aligned with the top surface of the lower mold, the lower mold core is provided with a lower mold cavity and a pouring inlet, and the lower mold cavity is recessed on the top surface of the lower mold core and a bottom passage communicating, the pouring inlet radially extending through the outer surface of the lower mold near the top surface, the through hole extending longitudinally through the lower mold and located at one side of the lower mold and communicating with the lower flow passage, and the perforation sleeve It is disposed on the periphery of the ejector pin of the base.

The upper module is disposed above the lower module and can be relatively close to or away from the lower module. The upper module is provided with an upper mold and an upper mold core, and the upper mold is concavely disposed on the bottom surface corresponding to the lower flow channel. The upper mold can be in contact with the lower mold, the upper mold is disposed in the upper mold and the bottom surface thereof is aligned with the bottom surface of the upper mold, and the upper mold body is provided with an upper mold hole and a pouring inlet, the upper mold cavity is recessed on the bottom surface of the upper mold core and communicates with the upper flow passage, the pouring inlet radially penetrates the outer surface of the upper mold core near the bottom surface, and the pouring inlet of the two mold cores is formed An annular injection hole.

In the prior art, the manufacturing mold for manufacturing the optical lens mainly moves the lower module upward and abuts against the upper module, so that the cavity between the two molds forms a cavity, and the two molds are poured through The injection port formed by the mouth, the liquid plastic is injected into the cavity to form an optical lens, wherein the liquid plastic injected into the cavity flows into the flow path of the two molds to close the perforation, and is located in the cavity. After the optical lens is cooled and plasticized, the lower module is moved downward to be separated from the upper module, and the ejector pin of the base is inserted into the lower flow path of the lower module through the through hole, and is pushed The plastic located in the lower flow path indirectly allows the optical lens located in the lower mold cavity to be separated from the lower mold core along with the plastic in the lower flow path.

However, the existing manufacturing mold for manufacturing an optical lens can provide an effect of manufacturing an optical lens, but the manufacturing mold for manufacturing an optical lens is used to indirectly eject the optical lens from the lower mold core through the ejection pin, wherein The ejector pin pushes a side near the optical lens, and the way of applying the force on one side is easy to cause stress concentration on one side of the optical lens during the ejector, thereby allowing the optical The phenomenon of deformation of the lens (release phenomenon) not only affects the product yield of the optical lens, but also the surface accuracy (PV, Peak to Valley) of the aspherical lens after deformation is caused by deformation. The symmetrical case, in turn, affects the imaging effect of the optical lens. Further, in the manufacturing mold for manufacturing an optical lens, the lower mold core or the upper mold core is composed of a plurality of separate members, and therefore, the existing lower mold core or upper mold core The gap between the components is easy to assemble and accumulates tolerances after assembly, and the cumulative tolerance results in the accuracy and yield of the optical lens after manufacture. , And manufacturing mold for manufacturing the conventional optical lenses manufactured by the optical lens has a room for improvement in its place.

Therefore, the present inventors have finally developed a present invention which can improve the existing defects in view of the defects and problems in the manufacture of the optical lens manufacturing mold and the use thereof in the manufacture of the optical lens.

The main object of the present invention is to provide an optical lens manufacturing method, a manufacturing mold and a product thereof, which are capable of averaging the force applied to the formed optical lens during the manufacturing process through a simplified structural arrangement. The lens is pushed out of the manufacturing mold, so that the formed optical lens does not have stress concentration and deformation, and the mold core for manufacturing the mold is an integrally formed structure type, which can effectively avoid the cumulative tolerance generated during assembly. Further, an optical lens manufacturing method which is an average force application, is not easily deformed, and has a high yield, and a purpose of manufacturing a mold and a product thereof are provided.

In order to achieve the above object, the present invention provides an optical lens manufacturing method, the manufacturing process comprising: a preparation step of preparing a manufacturing mold, the manufacturing mold is provided with a base, a lower module, an upper module and an injection The pedestal has at least three erected and spaced ejector pins, and the lower module is movable above and below the pedestal and is provided with a lower mold and a lower mold core. Provided in the lower mold and provided with a lower mold cavity, at least three perforations and a pouring inlet, the lower mold cavity is recessed on the top surface of the lower mold core, and the lower mold cavity forms a curved convex surface at the center of the bottom surface. And at least three arcuate long grooves which are annularly spaced apart from the outer circumference of the lower arc convex surface, and a class surface between the lower arc convex surface and the at least three curved long grooves, the at least three a perforation interval penetrating the lower mold core and communicating with the lower mold cavity, each of the perforations being sleeved on one of the ejector pins of the base, and each of the perforations is located between the adjacent arcuate long grooves of the lower mold cavity The pouring inlet radially penetrates the outer surface of the lower mold core and The upper die can be disposed relatively close to or away from the lower die and is provided with an upper die and an upper die. The upper die is disposed in the upper die and is provided with an upper die and a The upper mold cavity is recessed on the bottom surface of the upper mold core and conforms to the shape of the lower mold cavity, and an upper arc convex surface is protruded downward from the center of the upper mold cavity, and the pouring inlet penetrates the upper mold radially The injection head is movably disposed on one side of the lower module and the upper module and is provided with a liquid plastic inside; a processing step: moving the upper module toward the lower module Having the upper mold core abutting the lower mold core, forming a cavity between the upper mold cavity and the lower mold cavity, and forming a mold between the two casting inlets a cavity-injecting hole, the injection head is inserted into the injection hole, and the liquid plastic is injected into the cavity, so that the liquid plastic fills the cavity, and after the liquid plastic fills the cavity, Moving the ejection head out of the injection hole, allowing the liquid plastic located in the cavity to be cooled and plasticized into an optical lens; and a molding step of: cooling and plasticizing the liquid plastic into the optical lens in the cavity Thereafter, the upper module moves upward to be separated from the lower module, so that the upper cavity is separated from the optical lens, and the lower module moves toward the base to make each of the bases The ejector pin protrudes from the lower cavity through the corresponding perforation, so that the top end of each ejector pin simultaneously pushes against the bottom surface of the optical lens, so that the optical lens is evenly stressed and separated from the lower cavity, that is, the optical lens is completed. Manufacturing.

Further, in the preparation step, an upper arc convex surface is convexly protruded downward at the center of the upper mold cavity.

Further, in the preparation step, four ejector pins are arranged on the top surface of the pedestal, and four arcuate long grooves arranged in a ring shape are arranged in the lower cavity, and The mold core is provided with four perforations which are respectively combined with the ejector pins of the base and located between the arcuate long grooves.

In addition, the present invention provides a manufacturing mold for use in the optical lens manufacturing method described above, which is provided with: a base having at least three erect pins arranged upright and spaced apart; and a lower module, The lower module is disposed above and below the base and is provided with a lower mold and a lower mold core. The lower mold core is integrally formed and disposed in the lower mold and has a lower mold cavity, at least a three perforations and a pouring inlet, the lower cavities are recessed on the top surface of the lower mold core, the lower mold cavities form a lower arc convex surface at the center of the bottom surface, and at least three concave recesses are formed on the outer peripheral edge of the lower arc convex surface An arc-shaped long groove disposed at an annular interval, such that the lower arc convex surface and the at least three curved long grooves have a class surface, and the at least three perforations are spaced through the lower mold core and communicate with the lower mold cavity. Each of the perforations is sleeved on one of the ejector pins of the pedestal, and each of the perforations is respectively located between two adjacent arcuate long grooves of the lower cavity, the pouring inlet radially extending through the outer surface of the lower die Communicating with the lower cavity; An upper module, the upper module is disposed relatively close to or away from the lower module and is provided with an upper mold and an upper mold, the upper mold is disposed in the upper mold and is provided with an upper mold hole and a pouring inlet, the upper cavity is recessed on the bottom surface of the upper mold and conforms to the shape of the lower cavity, the pouring inlet radially penetrates the outer surface of the upper mold near the bottom surface; and an ejection head, the ejection head The utility model is movably disposed on one side of the lower module and the upper module and is provided with a liquid plastic inside.

Further, when the upper mold core is in close contact with the lower mold core, a cavity is formed between the upper mold cavity and the lower mold cavity, and a contact with the mold cavity is formed between the two casting inlets. The hole is inserted so that the ejection head can protrude into the injection hole.

Further, the upper mold cavity is convexly provided with an upper arc convex surface at a center.

Preferably, the base is provided with four spaced-apart ejector pins on the top surface, and the lower mold cavity is provided with four arcuate long grooves arranged in a ring shape, and the lower mold core is provided with four Perforations that are respectively combined with the ejector pins of the base and located between the arcuate slots.

The present invention provides an optical lens manufactured by the optical lens manufacturing method described above, wherein the optical lens forms a shape corresponding to the lower arc convex surface and the upper arc convex surface respectively on the bottom surface and the top surface surface. a concave surface and a second concave surface, and a plurality of positioning convex surfaces corresponding to the curved long groove shapes of the lower mold cavity are respectively arranged on the bottom surface.

According to the above technical means, the optical lens manufacturing method and the manufacturing mold of the present invention are mainly used in the lower mold core to have a plurality of perforations having the same number as the ejection pins of the base, so that the liquid plastic is After the mold cavity is cooled and plasticized into the optical lens, when the lower mold moves toward the base, each ejector pin can protrude into the lower cavity through the corresponding perforation, and directly and simultaneously push the same The bottom surface of the optical lens enables the optical lens to be detached from the lower mold cavity under uniform force, so that the optical lens does not cause stress concentration, and the deformation of the optical lens can be effectively avoided, and the optical lens is greatly improved. Optical lens product yield, and can reduce the aspheric surface of the optical lens The degree of asymmetry makes the optical lens provide better imaging effect. Further, a plurality of annular long grooved structures are arranged in the lower cavity to allow the liquid plastic to be cooled in the cavity. After plasticizing, a plurality of positioning convex surfaces respectively corresponding to the curved long groove shapes of the lower mold cavity may be formed on the bottom surface of the optical lens. When the optical lens is combined with the related optical device, each positioning convex surface may be Providing a positioning effect as a reference surface in assembly, further, the lower mold core or the upper mold core of the manufacturing mold is an integrally formed structural type, which can effectively avoid the cumulative tolerance generated during assembly, thereby providing an average force application. An optical lens manufacturing method, a manufacturing mold and a product thereof which are not easily deformed and have a high yield.

10‧‧‧ Pedestal

11‧‧‧Top sales

20‧‧‧ Lower module

21‧‧‧ Lower mold

22‧‧‧下模仁

23‧‧‧下模穴

231‧‧‧ lower arc convex

232‧‧‧ curved long groove

24‧‧‧Perforation

25‧‧‧ pouring entrance

30‧‧‧Upper module

31‧‧‧Upper mold

32‧‧‧上模仁

33‧‧‧上模穴

331‧‧‧Upper arc convex

34‧‧‧ pouring entrance

40‧‧‧shot

50‧‧‧ cavity

60‧‧‧ injection hole

70‧‧‧Optical lenses

71‧‧‧First concave surface

72‧‧‧second concave surface

73‧‧‧Positioning convexity

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block flow diagram showing a method of manufacturing an optical lens of the present invention.

Fig. 2 is a schematic side elevational view showing the manufacturing mold of the optical lens of the present invention.

Fig. 3 is a partially exploded perspective view showing the mold of the present invention.

Figure 4 is a schematic side view showing the operation of the mold of the present invention in the processing step.

Fig. 5 is a partial perspective view showing the operation of the mold in the processing step of the present invention.

Figure 6 is a partial, perspective, cross-sectional view showing the operation of the mold of the present invention in the processing step.

Figure 7 is a side elevational view showing the operation of the mold in the processing step of the present invention.

Fig. 8 is a side elevational view, partly in elevation, of the mold for manufacturing the mold in the processing step.

Figure 9 is a side elevational view, partly in cross section, of the operation of the mold of the present invention in the processing step.

Figure 10 is a side elevational view, partly in elevation, of a partial enlarged operation of the mold of the present invention in the processing step.

Figure 11 is a schematic side view showing the operation of the mold of the present invention in the molding step.

Figure 12 is a side elevational view showing a partially enlarged operation of the mold for molding in the molding step of the present invention.

Figure 13 is a schematic view showing the partial operation of the mold in the molding step of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the present invention will be further described in detail with reference to the preferred embodiments shown in the drawings (as shown in FIGS. 1 to 3). The invention relates to an optical lens manufacturing method, and the manufacturing process thereof comprises:

A. Preparation step: preparing a manufacturing mold, wherein the manufacturing mold is provided with a base 10, a lower module 20, an upper module 30 and an ejection head 40 as shown in FIGS. 1 and 7, wherein the base 10 is at the top The surface is provided with at least three upright and spaced ejector pins 11 , wherein the at least three ejector pins 11 are annular and are equally spaced on the top surface of the base 10 (ie, 120 degrees, 240 degrees, and 360 degrees). Preferably, the pedestal 10 is provided with four spaced-apart ejector pins 11 on the top surface, and the lower module 20 is disposed above the pedestal 10 and is provided with a lower mold 21 and Next, the mold core 22 is movable up and down with respect to the ejector pins 11 of the base 10.

The lower mold core 22 is disposed in the lower mold 21 and the top surface is aligned with the top surface of the lower mold 21. The lower mold core 22 is provided with a lower mold cavity 23, at least three perforations 24 and a pouring inlet 25. The lower mold cavity 23 is recessed on the top surface of the lower mold core 22. The lower mold cavity 23 is provided with a lower arc convex surface 231 at the center of the bottom surface, and at least three concave outer edges of the lower arc convex surface 231. An arcuate slot 232 disposed at an annular interval, wherein the lower arc convex surface 231 and the at least three curved long slots 232 have a class surface, and the at least three through holes 24 are axially spaced through the lower mold core 22, The perforations 24 are respectively disposed between the adjacent arcuate long slots 232 of the lower mold cavity 23, and the perforations 24 are respectively sleeved on the outer circumference of one of the ejector pins 11 of the susceptor 10. Preferably, The lower mold cavity 23 is provided with four arcuate long grooves 232 which are spaced and arranged in a ring shape, and the lower mold core 22 is provided with four respectively combined with the ejector pins 11 of the base 10 and located in each curved long groove. A perforation 24 between the ends 232, the pouring inlet 25 is radially communicated with the lower mold cavity 23 through the outer surface of the lower mold core 22 near the top surface.

The upper module 30 is disposed above the lower module 20 and can be relatively close to or away from the lower module 20. The upper module 30 is provided with an upper mold 31 and an upper mold core 32. The upper mold 21 is disposed in the upper mold 31, and the bottom surface thereof is aligned with the bottom surface of the upper mold 31. The upper mold core 32 is provided with an upper mold hole 33 and a pouring inlet 34. The upper mold cavity 33 is recessed on the bottom surface of the upper mold core 32 and conforms to the shape of the lower mold cavity 23. The upper mold cavity 33 has an upper arc convex surface 331 protruding downward from the center. The pouring inlet 34 is radial. Throughout the outer surface of the upper mold core 32 near the bottom surface, please refer to FIG. 5 and FIG. 6, when the upper module 30 and the lower module 20 are in contact with each other, the two mold cores 22 and 32 will be attached. A closed cavity 50 is formed between the lower die cavity 23 and the upper die cavity 33, and the two pouring inlets 25, 34 form an annular injection hole 60 communicating with the cavity 50. .

The ejection head 40 is located on one side of the lower module 20 and the upper module 30. The ejection head 40 is laterally movable relative to the two mold cores 22 and 32 so that the ejection head 40 can protrude into the injection hole 60. The ejection head 40 is internally provided with a liquid plastic. Preferably, the liquid plastic is a thermoplastic such as polycarbonate polyester (PC) or polymethylmethacrylate (PMMA). Plastic can flow into the mold cavity 50 through the injection head 40 and the injection hole 60.

B. Processing steps: Please refer to FIG. 4 to FIG. 7 to move the upper module 30 toward the lower module 20, so that the upper mold core 32 and the lower mold core 22 abut each other. The cavity 50 is formed between the cavity 33 and the lower die 23, and the injection holes 60 are formed in the two pouring inlets 25, 34, and the injection head 40 is inserted into the injection hole 60 and the liquid is The plastic is injected into the cavity 50, and the liquid plastic fills the cavity 50. After the liquid plastic fills the cavity 50, the injection head 40 is removed from the injection hole 60, and the cavity is placed in the cavity. The liquid plastic in 50 is cooled (holding pressure) so that the liquid plastic is plasticized into an optical lens 70 as shown in Figs.

C. Molding step: Please refer to FIG. 11. When the liquid plastic is cooled and plasticized into the optical lens 70 in the cavity 50, the upper module 30 will move upward and the lower module 20 The upper mold cavity 33 is separated from the optical lens 70, and the lower module 20 is moved toward the base 10, so that the ejector pins 11 located on the base 10 are correspondingly The perforation 24 extends out of the lower cavity 23, so that the top end of each of the ejection pins 11 simultaneously pushes against the bottom surface of the optical lens 70, so that the optical lens 70 is evenly forced to be separated from the lower cavity 23, that is, the optical lens 70 is completed. The optical lens 70 is formed in the cavity 50 as shown in FIGS. 12 and 13 . The optical lens 70 forms a surface on the bottom surface and the top surface opposite to the lower arc convex surface 231 and the upper arc convex surface 331 respectively. A first concave surface 71 and a second concave surface 72 corresponding in shape are formed, and a plurality of positioning convex surfaces 73 corresponding to the shapes of the arcuate long grooves 232 of the lower mold cavity 23 are respectively protruded from the bottom surface.

According to the above technical means, the optical lens manufacturing method and the manufacturing mold of the present invention are mainly used in the lower mold core 22 to have a plurality of perforations 24 having the same number as the ejection pins 11 of the base 10. After the liquid plastic is cooled and plasticized into the optical lens 70 in the cavity 50, when the lower mold 21 moves toward the base 10, the ejector pins 11 can extend into the lower through the corresponding through holes 24. In the cavity 23, the bottom surface of the optical lens 70 is directly and simultaneously pushed, so that the optical lens 70 can be detached from the lower cavity 23 under uniform force, so that the optical lens 70 does not generate stress concentration. In this case, the phenomenon that the optical lens 70 is deformed (release phenomenon) can be effectively avoided, the product yield of the optical lens 70 is greatly improved, and the probability of the aspherical surface precision of the optical lens 70 is reduced, so that the optical lens is made. 70 can provide a better imaging effect. Further, a plurality of annular elongated grooves 232 are arranged in the lower cavity 23 to allow the liquid plastic to be cooled and plasticized in the cavity 50. On the bottom surface of the optical lens 70 A plurality of positioning convex surfaces 73 respectively corresponding to the shapes of the arcuate long grooves 232 of the lower mold cavity 23, and when the optical lens 70 is combined with the associated optical device, each positioning convex surface 73 can provide an assembly as a reference surface. The positioning effect, further, the lower mold core 22 or the upper mold core 32 of the manufacturing mold is an integrally formed structural type, which can effectively avoid the cumulative tolerance generated during assembly, thereby providing an average force application, non-deformation and yield. Gaozhi optical lens manufacturing method, manufacturing mold and its products.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the scope of the present invention. Equivalent embodiments of the invention may be made without departing from the technical scope of the present invention.

22‧‧‧下模仁

23‧‧‧下模穴

231‧‧‧ lower arc convex

232‧‧‧ curved long groove

24‧‧‧Perforation

25‧‧‧ pouring entrance

32‧‧‧上模仁

33‧‧‧上模穴

331‧‧‧Upper arc convex

34‧‧‧ pouring entrance

Claims (10)

An optical lens manufacturing method, the manufacturing process comprising: a preparation step of preparing a manufacturing mold, the manufacturing mold is provided with a base, a lower module, an upper module and an ejection head, and the base is provided with at least Three upright and spaced ejector pins, the lower module is movable above and below the base and is provided with a lower mold and a lower mold core, and the lower mold core is disposed in the lower mold and is provided a cavity, at least three perforations and a pouring inlet, the lower cavity is recessed on a top surface of the lower mold, the lower cavity forms a convex arc at the center of the bottom surface, and the outer circumference of the lower convex surface The recess is provided with at least three annular long grooves arranged in an annular space, and has a class surface between the lower arc convex surface and the at least three curved long grooves, the at least three perforations are spaced through the lower mold core and The lower mold cavities are communicated, and each of the perforations is sleeved on one of the ejector pins of the pedestal, and each of the perforations is respectively located between two adjacent arcuate long grooves of the lower mold cavity, and the pouring inlet runs through the lower portion. The outer surface of the mold core is in communication with the lower mold cavity, and the upper module can be opposite Or disposed above the lower module and provided with an upper mold and an upper mold, the upper mold is disposed in the upper mold and is provided with an upper mold cavity and a pouring inlet, wherein the upper mold cavity is recessed in the a bottom surface of the upper mold core conforms to the shape of the lower mold cavity, and an upper arc convex surface is convexly disposed at a center of the upper mold cavity, and the pouring inlet penetrates the outer surface of the upper mold core near the bottom surface radially, and the injection head can be Mobilely disposed on one side of the lower module and the upper module and provided with a liquid plastic inside; a processing step of moving the upper module toward the lower module to make the upper mold core and the lower mold core Forming a cavity between the upper mold cavity and the lower mold cavity, and forming an injection hole communicating with the cavity between the two pouring inlets, and extending the injection head into the injection hole And filling the liquid plastic into the cavity, filling the cavity with the liquid plastic. After the liquid plastic fills the cavity, the injection head is removed from the injection hole and placed in the cavity. Liquid plastic is cooled and plasticized into an optical lens; and a molding step: when the liquid plastic is cooled in the cavity After the optical lens is formed, the upper module moves upward to be separated from the lower module, so that the upper cavity is separated from the optical lens, and the lower module moves toward the base to be located at the base. Each ejector pin on the seat protrudes through the corresponding perforation The lower mold cavity is such that the top end of each ejector pin pushes against the bottom surface of the optical lens at the same time, so that the optical lens is evenly stressed and separated from the lower mold cavity, that is, the manufacture of the optical lens is completed. The optical lens manufacturing method according to claim 1, wherein an upper arc convex surface is convexly protruded downward at a center of the upper mold cavity in the preparing step. The optical lens manufacturing method according to claim 2, wherein in the preparing step, four ejector pins are disposed on the top surface of the pedestal, and four spaced and annular arrays are arranged in the lower cavity. The arcuate long groove is provided with four perforations in the lower mold core which are respectively combined with the ejector pins of the base and located between the arcuate long grooves. A manufacturing mold for an optical lens, comprising: a base, the base is provided with at least three upright and spaced ejector pins; a lower module, the lower module is movable up and down a lower mold and a lower mold core are disposed above the base, and the lower mold core is integrally formed and disposed in the lower mold and is provided with a lower mold cavity, at least three perforations and a pouring inlet, the lower mold cavity a concave surface is formed on the top surface of the lower mold core, the lower mold cavity forms a lower arc convex surface at the center of the bottom surface, and at least three annular long groove grooves are arranged on the outer circumference of the lower arc convex surface, so that a lower surface convex surface and the at least three curved long grooves have a class surface, the at least three perforations are spaced through the lower mold core and communicate with the lower mold cavity, and the respective perforations are respectively sleeved on one of the bases Distributing, and each of the perforations is located between two adjacent arcuate long grooves of the lower mold cavity, the pouring inlet penetrates the outer surface of the lower mold core to communicate with the lower mold cavity; The upper module can be disposed relatively close to or away from the lower module and is provided with an upper mold and an upper part The upper mold core is disposed in the upper mold and is provided with an upper mold cavity and a pouring inlet. The upper mold cavity is recessed on the bottom surface of the upper mold core and conforms to the shape of the lower mold cavity. An outer surface of the upper mold core is adjacent to the bottom surface; and an ejection head is movably disposed on one side of the lower module and the upper module and is provided with a liquid plastic inside. The manufacturing mold of the optical lens of claim 4, wherein when the upper mold core and the lower mold core are in contact with each other, a cavity is formed between the upper mold cavity and the lower mold cavity, and the two An injection hole is formed in the pouring inlet to communicate with the cavity, so that the injection head can extend into the injection hole. The manufacturing mold of the optical lens according to claim 4, wherein the upper mold cavity is convexly provided with an upper arc convex surface at a center. The manufacturing mold of the optical lens of claim 6, wherein the base is provided with four spaced-apart ejector pins on the top surface, and the lower mold cavity is provided with four arcuate long grooves which are spaced and arranged in a ring shape. And the lower mold core is provided with four perforations respectively combined with the ejector pins of the base and located between the arcuate long grooves. The manufacturing mold of the optical lens of claim 4, wherein the base is provided with four spaced-apart ejector pins on the top surface, and the lower mold cavity is provided with four spaced and annular curved long lengths. a groove, and the lower mold is provided with four perforations respectively combined with the ejector pins of the base and located between the arcuate long grooves. An optical lens made by the optical lens manufacturing method according to any one of claims 1 to 3. An optical lens made by the optical lens manufacturing method according to claim 2 or 3, wherein the optical lens forms a shape corresponding to the lower arc surface and the upper arc convex surface respectively on the bottom surface and the top surface. The first concave surface and the second concave surface are spaced apart from each other by a plurality of positioning convex surfaces respectively corresponding to the curved long groove shapes of the lower mold cavity.