CN201181354Y - Optical Glass Lens Group - Google Patents

Abstract

An optical glass lens group and its manufacturing method, it is to use the optical glass lens as the insert to put into die cavity first and utilize the injection molding or compression molding method of imbedding the insert to form an optical glass lens group with clamp ring; the optical glass lens group comprises at least one optical glass lens and a clamping ring for fixing the optical glass lens; the manufacturing method comprises the following steps: providing an optical glass lens with an optical action surface and an outer shoulder part and a corresponding shading ring sheet as an insert; placing the insert into a mold of an injection molding process or a compression molding process for positioning, and injecting a plastic material heated to a certain temperature into the mold or heating and softening the plastic material and then pressing the plastic material into a preset area of the mold; after cooling, solidifying and shaping, an integrally formed optical glass lens group with a clamping ring is formed. The manufacturing method of the existing optical lens set can be improved, the process is simplified, the yield is improved, and the finished product is easier to be packaged in the lens.

Description

Optical Glass Lens Group

technical field

The utility model relates to an optical glass lens group, which is applied to the assembly between the optical glass lens and a clamping ring, and is especially suitable for small lenses and mobile phone lenses.

Background technique

Optical lens (optical lens) is the smallest optical element of camera or mobile phone lens, and can be composed of one or more optical lenses (optical lens) when used; optical lens 20a is generally made of optical plastic or optical glass material, including: There is an optical surface (optical surface) 21a which is generally a circular surface; and a shoulder (outer periphery) 22a outside the non-optical surface on the periphery of the optical surface 21a can be circular or square as shown in Figure 1 . Generally speaking, in order to enable the optical lens to be fixedly packaged in a lens (lens), the optical lens is first fixed on a holding ring (holding ring) 10a to form an optical lens set (optical lens set) 1a, the clamping The ring can be made of metal or plastic material, and the optical lens can be positioned and fixed through the clamping ring so that it can be aligned with the central axis (optical axis) of the lens. The lens moves inside to achieve the purpose of zooming; such as US patents US7,312,933, US7,095,572, US2007/0024989 and Japanese patent JP3650594.

The fixing method of the existing plastic or glass optical lens and the clamping ring (which can be made of metal or plastic material) is shown in Figure 1, especially the fixing method of the optical glass lens made of glass material is first based on Optical lens 20a outer shoulder 22a shape (such as circular or square) design suitable clamping ring 10a (clamping ring external shape is not limited as circular or square), then optical lens 20a is inserted into clamping ring 10a Position in the provided groove, and then fix it with glue; the glue is usually UV curing glue, and generally needs to be cured by curing procedures such as using a UV curing oven to cure; because the optical lens is small, use automatic machinery or manual glue When positioning and fixing, the optical surface 21a is often scratched or dripped with glue (ie, overflowing glue), resulting in time-consuming process and high defect rate; especially for positioning and fixing the optical glass lens made of glass and the clamping ring made of plastic material It is not easy to operate UV curing glue, the defect rate is high and the UV curing oven is time-consuming, so the cost has been unable to be reduced, such as Japanese patents JP3791615, JP06258562 and US patents US7224542 and US2007/0047109.

Another method is to embed the insert in the mold cavity first and then carry out injection molding, which can be called the insert injection molding method (insert injection molding method), which is to place an insert (usually a metal part) In the mold cavity (cavity) of the mold, inject molten plastic (rubber) material to fill a preset molding area (space) in the mold cavity and cover part or all of the insert. After cooling and solidification, it is released from the mold Take out the finished product; this manufacturing method has been widely used in electronic parts, connectors, mechanical parts, LEDs, such as US patent US5,923,805, Taiwan patent TWM313317, Japanese patent JP07120610, etc. When manufacturing an outer cover with a plastic lens through this molding method, the housing of the outer cover is used as an insert to be inserted into the mold cavity first, and then a plastic lens is injection-molded with plastic material to be integrated with the housing to complete a An integrally formed outer cover with a plastic lens; or an outer cover with a plastic lens that is integrally formed with a plastic lens as an insert and injected into the housing of the outer cover, such as Taiwan Patent TW0528279, US Patent US6,825,503; or The glass plate is an insert and the plastic material is coated around the glass plate to form various applications such as window glass, such as Japanese patent JP62251113. Or as US Pat. No. 6,710,945, it utilizes two injection holes of plastic material to injection mold the lens and the lens barrel in stages, or uses the infrared glass sheet as an insert, and then injects and molds a bracket (mount) to cover it. Another example is U.S. Patent No. 7,332,110, etc., the spectacle frame is inserted into the mold cavity of the mold first, and the preform of the plastic lens is heated to soften by using the press molding method, and the heating of the mold is used to soften the plastic lens. And pressurize to transfer the preset shape of the mold cavity to the softened preform, so that the preform is shaped into a lens and simultaneously integrated with the spectacle frame (insert) to form a pair of glasses. However, this press molding method cannot be applied to the process of combining the optical glass lens made of glass with the clamping ring made of plastic, because if the plastic clamping ring is used as the insert, the softening point temperature of the optical glass is about 500 ℃, much higher than the deformation temperature of the plastic material of the plastic clamping ring, such as 80 ℃, when the mold reaches the softening point temperature of optical glass, the plastic clamping ring has been deformed and cannot be formed; therefore, although the molding method can also be used for mass production , but it is technically difficult to realize that the clamping ring made of plastic material is used as the insert and the glass material is used as the molded material.

Because the optical glass lens group used in the lens requires high precision, the positioning accuracy of the optical glass lens and the clamping ring will affect the imaging of the lens; in order to develop new technologies, it is especially used in the combination of the optical glass lens and the clamping ring. It will be urgently needed to solve the high defect rate and long-process manufacturing method of using viscose, and to mass-produce optical glass lens sets with good positioning accuracy.

Contents of the invention

The main purpose of the utility model is to provide an optical glass lens group to overcome the above-mentioned shortcomings of the prior art, so that the optical glass lens group with good positioning accuracy can be produced energy-efficiently.

For this reason, the optical glass lens group provided by the present method uses the optical glass lens as a molded insert, which is first placed in a mold cavity of a mold and positioned by a positioning device, and then injection molding ( Injection molding) technology, or the use of molding (press molding) technology, plastic injection molding or plastic molding a lens clamping ring, and the lens clamping ring is tightly wrapped on the shoulder of the optical glass lens at the same time, so as to Form an integrally formed optical glass lens group with a clamping ring to simplify the process, improve yield, and reduce costs, and the optical glass lens group is easier to package in the lens, especially suitable for small lenses and mobile phone lenses .

The optical glass lens set of the present utility model can further use a light-shielding ring piece corresponding to the shape of the optical glass lens to attach and cover the shoulder of the optical glass lens. The light-shielding ring piece is made of non-transparent It can be placed together with the optical glass lens into the mold cavity of an injection or compression molding process and positioned by a positioning device, so that the clamping ring formed by the injection molding process or compression molding process can be tightly covered On the light-shielding ring piece on the shoulder of the optical glass lens, an integrally formed optical glass lens group with a clamping ring and a light-shielding ring piece is formed, and the light-shielding ring pieces can be positioned on the clamping ring due to the positioning device. The relatively formed through hole produces a shielding effect, so as to maintain the complete light shielding effect of the clamping ring, and prevent the imaging light passing through the optical active surface from leaking out of the through hole to affect the imaging efficiency.

The optical glass lens group of the utility model, when using two or more optical glass lenses, is provided with a spacer between the two optical glass lenses to fix the distance between the two optical glass lenses, which can be connected with the optical glass lens. The glass lens is placed in the mold cavity of an injection or compression molding process and positioned by a positioning device, so that the clamping ring formed by the injection molding process or compression molding process can be tightly coated on the optical glass lens, so that all The formed optical glass lens group has a clamping ring and two or more than two optical glass lenses with a fixed distance, so as to keep the distance between the optical glass lenses and avoid affecting the imaging quality.

The optical glass lens group 1 of the present utility model has at least the following advantages:

<1>, the manufacturing method of the optical glass lens group 1 of the utility model can improve the manufacturing method of the existing optical glass lens group, simplify the process, improve the yield, reduce the cost, and increase the possibility of mass production of the optical glass lens group.

<2>. The optical glass lens group 1 of the present invention can be more easily packaged in the lens, especially suitable for small lenses and mobile phone lenses, and can effectively improve the possibility of mass production of the lens.

Description of drawings

Fig. 1 is the schematic diagram of a prior art of the utility model;

Fig. 2 is the three-dimensional (plan view) schematic diagram of the first embodiment of the optical glass lens group of the present invention;

Fig. 3 is another perspective view (view from above) perspective view of the embodiment of the optical glass lens group in Fig. 2;

Fig. 4 is the top view of Fig. 2 optical glass lens group embodiment;

Fig. 5 is the bottom view of Fig. 2 optical glass lens group embodiment;

Fig. 6 is a schematic cross-sectional view of section line 6-6 in Fig. 3;

Fig. 7 is a schematic cross-sectional view of section line 7-7 in Fig. 3;

Fig. 8 is an explanatory diagram of placing each component of the optical glass lens set in the mold in sequence in the manufacturing method of the second embodiment (similar to the first embodiment) of the optical glass lens set of the present invention;

Fig. 9 is an explanatory diagram showing that each component of the optical glass lens group in Fig. 8 has been placed in the mold;

Fig. 10 is an explanatory diagram of mold opening after the optical glass lens of Fig. 9 is formed;

Fig. 11 is an explanatory view of mold removal after the optical glass lens of Fig. 10 is formed;

12A-E are explanatory diagrams of steps of the second embodiment of the manufacturing method of the present invention;

Fig. 13 is a schematic diagram of the components of the optical glass lens group placed in the mold of Fig. 12;

Fig. 14 is a schematic diagram of a molding die provided by the third embodiment of the present invention;

Fig. 15 is another schematic diagram of the molding die provided by the third embodiment of the present invention;

Fig. 16 is a schematic diagram of a molding die provided by the fifth embodiment of the present invention;

Fig. 17 is another schematic diagram of the molding die provided by the fifth embodiment of the present invention;

18A-E are explanatory views of each step of the manufacturing method of the fourth embodiment of the present invention.

Explanation of reference signs:

1, 1a-optical glass lens group; 10, 10a-clamping ring; 11-opening; 12-through hole; 13-guide rail; 20, 20a, 201, 202-optical glass lens; 21, 21a-optical surface; 22 , 22a-outer shoulder; 3-molding mold; 30-shading ring; 31-upper mold; 32-lower mold; 33-positioning device; ; 35-injection port; 36-heating wire; 40-spacer; 50-plastic material.

Detailed ways

In order to make the utility model more definite and detailed, hereby enumerate preferred embodiment and coordinate following accompanying drawing, the structure of the utility model, method and technical characteristic thereof are described in detail as follows:

Referring to Fig. 2 to Fig. 8, the optical glass lens set 1 of the present utility model mainly comprises at least one optical glass lens 20, and a clamping ring 10 for fixing the optical glass lens is formed; wherein, the optical glass lens 20 It is made of optical glass, which has an optical surface 21 and an outer shoulder 22 (equivalent to the optical surface 21a and outer shoulder 22a of FIG. The shapes of 21 and outer shoulder 22 are not limited.

The utility model can further arrange a shading ring 30 on the optical glass lens 20 to prevent light from leaking out or to prevent light such as LEDs in the camera from entering the optical lens. The shading ring 30 is made of non-translucent black plastic material. The light shielding ring 30 can utilize one side to shield the optical glass lens 20 or utilize two to shield the two sides of the optical glass lens 20; the optical glass lens 20 and the light shielding ring 30 are inserts embedded in the mould, Then use plastic injection molding or compression molding to make a clamping ring 10 and cover the insert to form an optical glass lens set 1, wherein the shape of the clamping ring 10, the dimensions of each part such as thickness (height) or width (outer diameter), etc. are not limited, and the design can be changed according to the assembly requirements of a lens (not shown).

The optical glass lens group 1 of the present utility model, wherein the optical glass lens 20 can be made up of two or more pieces, such as a camera lens or an imaging lens (imaging lens) often utilizes two or more pieces of optical glass lenses to form, and its lens shape There are often double-convex, double-concave, crescent, etc., and a certain distance is provided between multiple optical glass lenses to form an optical imaging effect; as shown in Figures 6 and 7, the optical glass lens 20 can be thickened The outer shoulder 22 (not shown) or a spacer 40 is further added to maintain a fixed distance between the two optical glass lenses 20; It is an insert embedded in the mold, and then a clamping ring 10 is made by plastic injection molding or compression molding to cover the insert to form the optical glass lens group 1 .

The optical glass lens set 1 of the present invention can be made by plastic injection molding manufacturing method as shown in Figure 8, and the steps are as follows:

Provide at least one optical glass lens 20 having an optical surface 21 and a non-optical surface outer shoulder 22; this illustration includes two optical glass lenses 201, 202;

A forming mold 3 for injection molding is provided, comprising an upper mold 31 and a lower mold 32, the mold is provided with a predetermined area 34 for molding the clamping ring; and the mold is provided with at least one injection port 35;

The optical glass lens 20 (201, 202), the spacer 40 and the light-shielding ring 30 are used as embedded inserts, and placed in the mold cavity space formed by the upper mold 31 and the lower mold 32 of the molding mold 3 according to a predetermined procedure;

Heating the plastic material to a predetermined temperature, injecting (injecting) into the predetermined area 34 for molding in the space formed by the upper mold 31 and the lower mold 32 of the molding mold 3 through the injection port 35;

After the plastic material is cooled and solidified, the upper mold 31 and the lower mold 32 of the forming mold 3 are separated to take out the optical glass lens set 1 .

In addition, the optical glass lens set 1 of the present invention can also be made by plastic molding as shown in Figure 18, and the steps are as follows:

Provide at least one optical glass lens 20 having an optical surface 21 and a non-optical surface outer shoulder 22; this illustration includes two optical glass lenses 201, 202;

Prepare a forming mold 3 for compression molding, including an upper mold 31 and a lower mold 32, and a predetermined area 34 for forming a clamping ring is provided in the mold;

The optical glass lens 20, the spacer 40 and the shading ring 30 are embedded inserts, which are inserted into the space formed by the upper mold 31 and the lower mold 32 of the forming mold 3 according to a predetermined procedure;

Put plastic material of predetermined weight in the molding preset area 34 in the space formed by the upper mold 31 and the lower mold 32;

Heat the mold to soften the plastic material to a predetermined temperature, and then pressurize the upper mold 31 and the lower mold 32 of the molding mold 3, so that the softened plastic material flows into the space formed by the upper mold 31 and the lower mold 32 of the molding mold 3 In the preset area for molding;

Cool the mold and reduce the mold pressure. After the plastic material is cooled and solidified, the upper mold 31 and the lower mold 32 of the molding mold 3 are separated to take out the optical glass lens set 1 .

The forming mold 3 provided in the manufacturing method of the optical glass lens set 1 of the present invention includes a positioning device 33 in the forming mold 3 in order to enable the optical lens 20 to be positioned correctly, and the setting position or positioning method of the positioning device 33 is not limited. The shape of the optical glass lens 20 used is also not limited, as square optical glass lens 20 or circular optical glass lens 20 can be used; the mold cavity shape of molding die 3 is also not limited, and can be shaped into a square shape as required The clamping ring 10 (that is, the square optical glass lens group 1), or the circular clamping ring 10 (that is, the circular optical glass lens group 1).

The preferred embodiments of the present utility model are described respectively as follows:

<First embodiment>

This embodiment is an optical glass lens set 1 with a single optical glass lens, which is manufactured by injection molding. As shown in Figures 2 and 3, the optical glass lens set 1 is composed of an optical glass lens 20 and a clamping ring 10 for fixing the optical glass lens, wherein the optical glass lens 20 is made of optical glass, It has an optical surface 21 and a shoulder 22 outside the non-optical surface on the periphery of the optical surface 21; the shape of the optical surface 21 and the outer shoulder 22 of the optical glass lens 20 is not limited; the optical lens 20 of the present embodiment can be used Made by precision glass molding (such as Taiwan patent TWM295755), the outer shoulder 22 is square, and the optical surface 21 is biconvex. The clamping ring 10 utilizes the injection molding (injection molding) process to form on the peripheral surface of the outer shoulder 22 of the optical glass lens 20, and makes it form at the central area relative to the optical surface 21 of the optical glass lens 20. An opening 11 for the imaging light to pass through the opening 11 for imaging; and the clamping ring 10 is tightly wrapped on the outer shoulder 22 of the optical glass lens 20 during molding to form an integral body with the clamping ring 10 Formed optical glass lens set 1 . In this embodiment, the clamping ring 10 is a square clamping ring; and the outer ring surface of the clamping ring 10 can be provided with guide rails 13 according to assembly requirements, such as forming a guide rail 13 on the opposite two sides for assembling on the lens When inside the module, the optical glass lens group 1 can be guided to move axially on the optical axis to achieve the purpose of zooming.

In this embodiment, the optical glass lens set 1 is further provided with two light-shielding rings 30 corresponding to the shape of the optical glass lens 20 , so that the light-shielding rings 30 are attached to and completely cover the outer shoulder 22 of the optical glass lens 20 As shown in Figures 4 and 5 on the upper two sides, the shading ring 30 is made of non-transparent black plastic material, which is formed before the clamping ring 10 is formed by using an injection molding process. First stick on the outer shoulder 22 of the optical glass lens 20 (to be described later), so that a part of the clamping ring 10 after molding can be closely connected to the light-shielding ring sheet wrapped on the outer shoulder 22 of the optical glass lens 20 30 to form an integrally formed optical glass lens group 1 with both a clamping ring 10 and a light-shielding ring 30; the main function of the light-shielding ring 30 is to prevent or avoid the imaging light passing through the optical surface Any hole on the holding ring 10 is shown in Figure 3 and 4 through holes 12 to leak light outwards, these through holes 12 are because the optical glass lens 20 can be set in the mold of injection molding (injection molding) process The positioned positioning device 33 (as shown in FIG. 8 ) corresponds to the relatively formed perforation on the clamping ring 10. The light-shielding ring 30 can be used to maintain the complete light-shielding effect of the clamping ring 10 and avoid the imaging light passing through the optical surface 21. The imaging effect is affected by the leakage of the through hole 12 on the clamping ring 10; and the shielding range of the light-shielding ring plate 30 on the outer shoulder 20 of the optical glass lens 20 can further cover the entire outer shoulder 20, that is, only The optical surface 21 is exposed to the outside (as shown in FIGS. 2-7 ), so as to relatively produce a light-gathering effect on the optical glass lens 20 and have an aperture stop (aperture stop) function.

Referring again to Figures 8-12 (the manufacturing process of this embodiment is the same as that of the second embodiment, so the manufacturing process diagram of this embodiment is illustrated by taking the second embodiment with two optical glass lenses as an example), the optical glass lens set of the present utility model 1, comprising the following steps:

First, provide at least one optical glass lens 20 having an optical surface 21 and an outer shoulder 22; the optical glass lens 20 in the figure of this embodiment includes two optical glass lenses 201, 202;

Provide an injection molding mold 3 for the above-mentioned optical glass lens 20; the molding mold 3 generally includes an upper mold 31 and a lower mold 32, as shown in FIG. 12A ;

Using the above-mentioned optical glass lens 20 and the upper and lower light-shielding rings 30 as inserts, they are sequentially placed into the mold 3 of the above-mentioned injection molding process and positioned as shown in Figure 12B; in this embodiment, the The optical glass lens 20 and the shading ring 30 (embedded insert) can be positioned by the positioning device 33 on the lower mold 32, and the positioning device 33 is mainly positioned on the optical axis (center) of the optical active surface 21 of the optical glass lens 20. axis) can coincide with the optical axis (central axis) of the integrally formed optical glass lens group 1;

Then the upper mold 31 and the lower mold 32 are closed; as shown in Figure 12C, when the upper mold 31 and the lower mold 32 are closed, the pouring area for forming the clamping ring 10 in the mold 3, that is, the pre-preparation of the clamping ring 10 Assuming that the area 34 can be defined, the mold 3 is also provided with an injection port 35; as for the shape of the predetermined area 34 (that is, the shape of the clamping ring 10) or the position and number of the injection port 35 are designed according to the injection molding process , the injection port 35 of the present embodiment is one; Since the design of the mold 3 is not the main feature of the present utility model, and it can be achieved by using the known injection molding process, so it will not be repeated here;

Then use the plastic material 50 heated to a certain temperature (viscosity), inject the plastic material 50 into the pouring area 34 through the injection port 35, and make the plastic material 50 flow to and fill the pouring area of the clamping ring 10 34 as shown in FIG. 12(D); the plastic material 50 used in this embodiment is a thermoplastic LCP resin, and the LCP resin is heated to 300° C., and the mold 3 is heated to 50° C., and then the injection molding operation is performed;

After the plastic material 50 is cooled and solidified, the mold 3 is separated, the upper mold 31 is removed, and the optical glass lens group 1 is taken out as shown in FIG. Two optical glass lenses (201, 202) and the light-shielding ring plate 30 are combined into an integrally formed optical glass lens group 1 .

Among them, the function of the light-shielding ring 30, please refer to the structure of the mold 3 in Figure 8-12 and the structure of the formed optical glass lens group 1, because the positioning device 33 in the mold 3 is required for the demoulding design, resulting in After molding, a corresponding number of through holes 12 will be relatively formed on the clamping ring 10, so when the optical glass lens 20 is inserted into the mold 3, a shading ring attached to the outer shoulder 22 of the optical glass lens 20 Sheet 30 is as shown in Figure 8, 12 (B), promptly puts a shading ring piece 30 in positioning device 33 earlier, then stacks optical glass lens 20 on top of light-shielding ring piece 30 correspondingly, inserts another shading ring piece 30 again. The ring piece 30 is correspondingly stacked on the optical glass lens 20; the light-shielding ring piece 30 is made of a material such as plastic or aluminum foil that does not have light transmission (such as black), so that a part of the clamping ring 10 after molding or covers The entire outer shoulder 22 of the optical glass lens 20 is covered by the light-shielding ring 30 , so that the optical glass lens 20 can relatively collect light and have the function of an aperture stop.

<Second Embodiment>

This embodiment is an optical glass lens set with two optical glass lenses, which is made by injection molding. As shown in Figures 4 and 5, the optical glass lens set 1 of the present embodiment mainly includes: two optical glass lenses 20 which include a biconvex optical glass lens 201 and a crescent optical glass lens 202, one for making the two The optical glass lens 210, 202 is fixed at a certain interval between the separated spacer 40 and a clamping ring 10 for fixing the optical glass lens; wherein, the optical glass lens 20 is made of optical glass, and the outer shoulder The part 22 is square, same as the first embodiment, made by glass precision molding manufacturing method, the optical glass lens 201 and the optical glass lens 202 are spaced apart at a certain distance to form an optical imaging effect; the spacer 40 is placed on the optical glass lens Between 201 and the optical glass lens 202, the thickness of the spacer 40 is equivalent to the specific distance between the optical glass lens 201 and the optical glass lens 202, so that the two optical glass lenses are separated and fixed at a certain distance.

The shading ring 30 is attached to the outer shoulders 22 of the two sides of the optical glass lens 20. The shading ring 30 is made of non-transparent material such as plastic or aluminum foil; its main function is to prevent Or to prevent the imaging light passing through the optical active surface from leaking outward from any hole on the clamping ring 10 as shown in Figs.

The clamping ring 10 utilizes the injection molding process, and a light-shielding ring piece 30, an optical glass lens 201, a spacer 40, an optical glass lens 202 and another light-shielding ring piece 30 are embedded inserts. The clamping ring 10 is wrapped on the outer shoulders 22 of the two optical glass lenses 20 to form an integrated optical glass lens set 1 with the clamping ring 10 .

Referring again to FIGS. 8-12 , the manufacturing method of the optical glass lens set 1 of the present embodiment includes the following steps:

First, provide the shading ring 30, the optical glass lens 201, the spacer 40 and the optical glass lens 202 as embedded inserts; an injection molding mold 3, the molding mold 3 generally includes an upper mold 31 and a lower mold 32 As shown in Figure 12A;

With the above-mentioned shading ring 30, optical glass lens 201, spacer 40 and optical glass lens 202 as embedded inserts, they are sequentially placed in the mold 3 of the above-mentioned injection molding process and positioned as shown in Figure 12B; In an example, the optical glass lens 20, the spacer 40 and the shading ring 30 can be positioned by the positioning device 33 on the lower mold 32;

Then the upper mold 31 and the lower mold 32 are closed; as shown in Figure 12C, when the upper mold 31 and the lower mold 32 are closed, the pouring area for forming the clamping ring 10 in the mold 3, that is, the area of the clamping ring 10 The molding predetermined area 34 can be defined, and the mold 3 is provided with a material injection port 35; as for the shape of the predetermined area 34 or the position and number of the material injection port 35, it is designed according to the injection molding process. There is one port 35; in this embodiment, when the upper mold 31 and the lower mold 32 are closed, vacuuming is carried out at the same time to eliminate air remaining in the molding preset area 34 and affect the injection molding;

Then use the plastic material 50 heated to a certain viscosity. The plastic material 50 used in this embodiment is a thermoplastic LCP resin. 35 is injected into the preset area (casting area) 34, and the plastic material 50 flows to and fills the preset area (filling area) 34 of the clamping ring 10 as shown in Figure 12D;

After the plastic material 50 is cooled and solidified, the mold 3 is separated, the upper mold 31 is removed, and the optical glass lens set 1 is taken out as shown in FIG. The integrally formed optical glass lens group 1 formed by separating at a specific distance fixed by the spacer 40 and combining with the light-shielding ring 30 .

<Third embodiment>

This embodiment is an optical glass lens set with a square optical glass lens. As shown in Figures 13, 14 and 15, it is the injection molding mold 3 of the square optical glass lens group 1 of the present embodiment, which is applied to the square optical glass lens 20, including an upper mold 31, a lower mold 32, a material injection port 35, and a positioning mold. Device 33 and heating wire 36; Wherein, positioning device 33 is made of four positioning points, the distance and the position of its two groups of opposite positioning points can place square optical glass lens 20 in the center; Wherein, upper mold 31 , the lower mold 32 and the embedded insert form the pouring area, that is, the preset area 34 of the clamping ring 10 for plastic molding; wherein the injection port 35 is designed by molding flow design (molding flow design), its position and aperture size The plastic liquid at 300°C can flow into the preset area (casting area) 34 within a certain period of time; the heating wire 36 is a temperature controller that can be connected to the plastic injection molding equipment to control the temperature of the upper mold 31 and the lower mold 32 .

When manufacturing the optical glass lens set 1, the upper mold 31 and the lower mold 32 are first heated to a predetermined temperature (50° C. in this embodiment), the embedded insert is placed in the positioning device 33, and the upper mold 31 and the lower mold are closed. 32 at the same time, vacuuming is carried out by the plastic injection molding equipment; when the temperature of the plastic material 50 reaches the temperature that can be injected (300°C in this embodiment), the plastic material 50 can be injected into the preset area through the injection port 35 (pouring material) area) 34, thereby forming a square optical glass lens group 1.

<Fourth Embodiment>

This embodiment is an optical glass lens set with a single piece of optical glass lens, which is made by molding method. 2 and 3, the optical glass lens set 1 of the present embodiment comprises an optical glass lens 20 and a clamping ring 10 for fixing the optical glass lens, wherein the optical glass lens 20 is made of optical glass ; The optical lens 20 of this embodiment can be made by glass precision molding method first, and the optical surface 21 of the optical lens 20 is biconvex. The clamping ring 10 is molded on the peripheral surface of the outer shoulder 22 of the optical glass lens 20 by molding process, and an opening 11 is formed in the central area relative to the optical surface 21 of the optical glass lens 20 for the imaging light to pass through. The opening 11 is used for imaging; and the clamping ring 10 is tightly wrapped on the outer shoulder 22 of the optical glass lens 20 during molding to form an integrally formed optical glass lens group 1 with the clamping ring 10 .

In this embodiment, the optical glass lens set 1 is further provided with two light-shielding rings 30 corresponding to the shape of the optical glass lens 20 , so that the light-shielding rings 30 are attached to and completely cover the outer shoulder 22 of the optical glass lens 20 The upper two sides are attached to the outer shoulder 22 of the optical glass lens 20 before molding to form an integrally formed optical glass lens group 1 with both the clamping ring 10 and the shading ring 30 .

Referring to FIG. 18 again, the compression molding manufacturing method of the optical glass lens set 1 of the present embodiment includes the following steps:

First, at least one optical glass lens 20 having an optically active surface 21 and an outer shoulder 22 is provided;

Provide a forming mold 3 of a molding process for the above-mentioned optical glass lens 20; the forming mold 3 generally includes an upper mold 31 and a lower mold 32 as shown in Figure 18A;

Using the above-mentioned optical glass lens 20 and the upper and lower light-shielding rings 30 as embedded inserts, they are placed in the above-mentioned compression molding mold 3 in sequence and positioned as shown in Figure 18B; the positioning method is shown in Figure 16, 17, the optical glass lens 20 and the shading ring 30 (insert) can be positioned by the positioning device 33 on the lower mold 32;

Then a certain amount of plastic material 50, the plastic material 50 used in this embodiment is a thermoplastic LCP resin preform, is placed on the above-mentioned insert as shown in Figure 18C;

Then the upper mold 31 and the lower mold 32 are closed, and the upper mold 31 and the lower mold 32 are heated; in this embodiment, when the upper mold 31 and the lower mold 32 are closed and heated, vacuuming is carried out at the same time to remove air remaining in the molding. The preset area affects the compression molding; after heating the mold 3 to 65°C, pressurize the upper mold 31 and the lower mold 32, and at the same time continue to heat the mold to 85°C, at this time the pressure of the upper mold 31 and the lower mold 32 When the predetermined 200 psi is reached, the temperature of the plastic material 50 in the mold 3 reaches about 120°C-150°C. At this time, the plastic material 50 has flowed into the pouring area, that is, the forming preset area 34, and passes through the mold of the upper mold 31 and the lower mold 32. Hole shape and shaping, as shown in Figure 18D;

After the plastic material 50 is shaped, start to lower the pressure and temperature of the upper mold 31 and the lower mold 32; when the normal pressure is reached and the temperature drops to 50°C-60°C, the upper mold 31 and the lower mold 32 are separated and taken out. The optical glass lens group 1, as shown in Figure 18E; complete an integrated optical glass lens group 1 formed by combining a clamping ring 10, an optical glass lens 20 and a light-shielding ring plate 30.

<Fifth Embodiment>

This embodiment is an optical glass lens set with a circular optical glass lens, which is made by compression molding. As shown in Figures 16 and 17, the molding die 3 for molding the circular optical glass lens of this embodiment is applied to the circular optical glass lens 20, including an upper mold 31, a lower mold 32, a positioning device 33 and a heating wire 36; Wherein, the positioning device 33 is composed of four positioning points (also can be three positioning points), the distance and the position formed by the positioning points can place the circular optical glass lens 20 in the center; wherein, the upper mold 31, The lower mold 32 and the molded insert form the pouring area, that is, the preset area 34 for the plastic material to form the clamping ring 10. The heating wire 36 is a temperature controller that can be connected to the plastic injection molding equipment to control the upper mold 31 and The temperature of the lower mold 32.

When manufacturing the optical glass lens group 1, the molded embedding insert is first inserted into the positioning device 33, and the plastic material 50 (not shown in the figure), usually powder or preform, is inserted into the molding of the clamping ring 10. In the area (preset space) 34, the upper mold 31 and the lower mold 32 are heated to a predetermined temperature (such as 85° C.), and while the upper mold 31 and the lower mold 32 are closed, the molding equipment is vacuumed; The mold 31 and the lower mold 32 exert pressure, and when the predetermined molding time is completed, the upper mold 31 and the lower mold 32 are separated to take out the optical glass lens group 1 of the circular optical lens 20 .

The optical glass lens group 1 of the present utility model has at least the following advantages:

<1>, the manufacturing method of the optical glass lens group 1 of the utility model can improve the manufacturing method of the existing optical glass lens group, simplify the process, improve the yield, reduce the cost, and increase the possibility of mass production of the optical glass lens group.

<2>. The optical glass lens group 1 of the present invention can be more easily packaged in the lens, especially suitable for small lenses and mobile phone lenses, and can effectively improve the possibility of mass production of the lens.

The above descriptions are only preferred embodiments of the present invention, and are only illustrative of the present invention, rather than restrictive; those skilled in the art understand that they can be used within the spirit and scope of the claims of the present invention. Many changes, modifications, and even equivalent changes are made, but all will fall within the protection scope of the present invention.

Claims (14)

1, a kind of optical glass lens group, it comprises at least one optical glass lens, at least one shading ring plate and a holding ring, it is characterized in that:

This optical glass lens is folded in the inside of holding ring, makes with optical glass, and has optical surface and shoulder outside peripheral non-optical of optical surface;

This shading ring plate is attached at outside non-optical of optical glass lens on the shoulder;

This holding ring is that a ring bodies is coated on outside the optical glass lens, it is to utilize jetting formation process moulding and being coated on outside the optical glass lens on the shoulder on the peripheral surface of shoulder outside the above-mentioned optical glass lens, and its middle section with respect to the optical surface of optical glass lens is provided with opening and passes through for imaging light.

2, optical glass lens group according to claim 1 is characterized in that, this optical glass lens is circular glass eyeglass or square glass eyeglass.

3, optical glass lens group according to claim 1 is characterized in that, shape is square or circular outside this holding ring.

4, optical glass lens group according to claim 1 is characterized in that, the material of this holding ring is light tight plastic cement.

5, optical glass lens group according to claim 1 is characterized in that, the range of defilade of this shading ring plate further comprises shoulder outside the whole non-optical acting surface.

6, optical glass lens group according to claim 1 is characterized in that, this optical glass lens is made up of two or two above optical mirror slips.

7, optical glass lens group according to claim 6, its further outside two optical glass lens between the shoulder folder establish a distance piece, with so that form distance between the suitable thickness with distance piece between the optical effect face of two optical glass lens.

8, a kind of optical glass lens group, it comprises at least one optical glass lens, at least one shading ring plate and a holding ring, it is characterized in that:

This optical glass lens is folded in the inside of holding ring, makes with optical glass, and has optical surface and shoulder outside peripheral non-optical of optical surface;

This shading ring plate is attached at outside non-optical of optical glass lens on the shoulder;

This holding ring is a ring bodies and is coated on outside the optical glass lens, it is to utilize die press technology for forming moulding and being coated on outside the optical glass lens on the shoulder on the peripheral surface of shoulder outside the above-mentioned optical glass lens, and its middle section with respect to the optical surface of optical glass lens is provided with opening and passes through for imaging light.

9, optical glass lens group according to claim 8 is characterized in that, optical glass lens is circular glass eyeglass or square glass eyeglass.

10, optical glass lens group according to claim 8 is characterized in that, shape is square or circular outside this holding ring.

11, optical glass lens group according to claim 8 is characterized in that, the material of this holding ring is light tight plastic cement.

12, optical glass lens group according to claim 8 is characterized in that, the range of defilade of this shading ring plate further comprises shoulder outside the whole non-optical acting surface.

13, optical glass lens group according to claim 8 is characterized in that, this optical glass lens is made up of two or two above optical mirror slips.

14, optical glass lens group according to claim 13, it is characterized in that, further can outside two optical glass lens between the shoulder folder establish a distance piece, with so that form distance between the suitable thickness with distance piece between the optical effect face of two optical glass lens.

Images