TW201802496A - Optical element, optical module and manufacturing method thereof reducing the manufacturing cost and exhibiting excellent optical performance - Google Patents

Abstract

Provided is an optical element, comprising a first glass optical lens and a first resin optical lens, the first glass optical lens is made of a glass material and provided with a first surface, the first resin optical lens contains a resin formed on the first surface and having optical function properties. By providing the first resin optical lens, not only can the function of bonding or protection be provided, but also the optical characteristics can be provided, so that the design of the optical element is more flexible, and due to the full utilization of the volume, the purpose of miniaturization of the design can be achieved to reduce the manufacturing cost, moreover, to exhibit excellent optical performance.

Description

Optical element, optical module and manufacturing method thereof

The invention relates to an optical element, an optical module and a manufacturing method thereof, and in particular to a composite optical element, an optical module and a manufacturing method thereof.

Optical components refer to lenses, lenses, masks, filters, various lenses or lenses, or combinations thereof, which are the core components of optical applications. Optical components are widely used, such as traditional optical equipment such as microscopes, magnifying glasses, telescopes, cameras, and video cameras; or consumer electronics such as mobile phones and digital cameras; and even medical, industrial inspection, and measurement industries. The quality of the optical components determines the performance of the device used. For example, high-precision optical components can provide sharp and extremely low-distortion imaging.

The traditional optical element can refer to the Republic of China New Patent Publication No. M399992 filed by the applicant of this case, and proposes a compound lens with high heat resistance, which includes a first lens and a second lens. The first lens has a first lens and a second lens. A curved surface and a second curved surface. The second lens is formed of a thermosetting resin at a position of the first lens relative to the second curved surface. The second lens has a third curved surface opposite to one side of the first lens.

In terms of manufacturing methods, the Republic of China Invention Patent Publication No. 201026488, which can be filed separately by the applicant of the present case, proposes a method for manufacturing an optical element, including the following steps: providing a mold having a lower forming surface and an upper surface; A forming surface, and a curvature radius of the lower forming surface is smaller than a curvature radius of the upper forming surface; a sleeve is provided, the sleeve has an outer surface, an inner surface, and at least one groove, and the groove is ring-shaped An inner surface, and the groove has a guide surface and a bearing surface, the guide surface is inclined from the lower forming surface toward the upper forming surface, and is arranged from the inner surface of the sleeve to the outer surface And the bearing surface is perpendicular to the inner surface and forms an inclined angle with the guide surface; an optical material is placed in the sleeve, and the optical material is placed in a position corresponding to the groove; and the softening The optical material is pressed against the optical material by the lower forming surface and the upper forming surface of the mold, so that the optical material is adhered to the inner surface of the sleeve, and is embedded by being guided by the guide surface. The ditch And stopped by the supporting surface, while enabling the optical material forming a first mirror and a second one having a surface on the optical lens.

In addition, you can also refer to the Republic of China Invention Patent Publication No. 201248237, which proposes a fixed-focus projection lens, which includes a first lens group and a second lens which are sequentially arranged along an optical axis from an imaging side to an image source side. Mirror group, the first lens group has positive refractive power and includes a first lens and a second lens arranged in order from the imaging side to the image source side, the first lens is made of plastic material and has a negative Refractive power, the second lens is made of glass material and has positive refractive power, the second lens group has positive refractive power and includes a third lens and a fourth lens which are sequentially arranged from the imaging side to the image source side A fifth lens, a sixth lens and a seventh lens, the third lens is made of plastic material and has negative refractive power, the fourth lens is made of glass material and has negative refractive power, the fifth lens It is made of glass and has positive refractive power, and the fifth lens and the fourth lens are glued to form a compound lens with negative refractive power. The sixth lens is made of plastic and has positive refractive power. The seventh lens Made of a glass material and having a negative refractive power.

In the above prior art, the Republic of China Invention Patent Publication No. 201026488 discloses that an optical material is pressed into a sleeve to form an optical element in which the optical lens and the sleeve are fitted, but the disclosed structure is only a single lens. Therefore, the optical performance needs to be improved. The Republic of China New Patent Publication No. M399992 discloses that the second lens is formed of the thermosetting resin; and the Republic of China Invention Patent Publication No. 201248237 discloses that a plurality of glass lenses are glued through resin. In the foregoing prior art, the second lens The lens itself only has the effect of improving heat resistance, and the resin only has the function of gluing. Both of them do not have optical characteristics, which makes the optical performance of the composite lens less than ideal and the volume cannot be reduced. It can be known from the above that the structural design of the optical element still needs to be improved.

The main purpose of the present invention is to solve the problem of poor optical performance of conventional optical elements.

To achieve the above object, the present invention provides an optical element including a first glass optical lens and a first resin optical lens. The first glass optical lens is made of a glass material and has a first surface. The resin optical lens is formed on the first surface by a resin having an optical function characteristic.

In one embodiment, the shape of the first surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface.

In one embodiment, a second resin optical lens is further formed on a second surface of the first glass optical lens away from the first surface.

In one embodiment, the shape of the second surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface.

In one embodiment, a second glass optical lens is further formed on a third surface of the first resin optical lens away from the first glass optical lens.

In one embodiment, the material of the resin is a phenol resin.

In one embodiment, the first resin optical lens has a thickness of at least greater than 0.2 mm.

To achieve the above object, the present invention further provides an optical module including at least one optical element, the optical element being selected from the group consisting of:

A. A first optical element, including a first glass optical lens and a first resin optical lens. The first glass optical lens is made of a glass material and has a first surface. The first resin optical lens system A resin having an optical function characteristic is formed on the first surface;

B. A second optical element includes a first glass optical lens, a first resin optical lens, and a second glass optical lens. The first glass optical lens is made of a glass material and has a first surface. The first resin optical lens is formed on the first surface by a resin having an optical function characteristic, and the second glass optical lens is formed on a third surface of the first resin optical lens away from the first glass optical lens; as well as

C. A third optical element includes a first glass optical lens, a first resin optical lens, and a second resin optical lens. The first glass optical lens is made of a glass material and has a first surface. The first resin optical lens is formed on the first surface by a resin having an optical function characteristic, and the second resin optical lens is formed on a second surface of the first glass optical lens away from the first surface.

In one embodiment, the shape of the first surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface.

In one embodiment, the shape of the second surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface.

In one embodiment, the material of the resin is a phenol resin.

In an embodiment, the first resin optical lens and the second resin optical lens have a thickness of at least greater than 0.2 mm.

To achieve the above object, the present invention further provides a method for manufacturing an optical element. First, a first glass optical lens having a first surface is provided, and then a resin having an optical function characteristic is formed on the first glass optical lens. A first resin optical lens is obtained from the first surface.

In an embodiment, the method further includes the following steps:

Step S1A: fixing a first peripheral edge of the first glass optical lens to an inner wall of a sleeve; and

Step S2A: using a mold to squeeze the resin toward the first surface of the first glass optical lens to form the first resin optical lens on the first surface.

In an embodiment, the method further includes the following steps:

Step S1B: a first peripheral edge of the first glass optical lens is fixed on an inner wall of a sleeve;

Step S2B: using a first mold core to press a first resin toward the first surface of the first glass optical lens to form the first resin optical lens on the first surface; and

Step S3B: a second resin is pressed against a second surface of the first glass optical lens away from a first surface of the first surface with a second mold core to form a second resin optical lens on the second surface .

In an embodiment, the method further includes the following steps:

Step S1C: a first peripheral edge of the first glass optical lens and a second peripheral edge of a second glass optical lens are respectively fixed on an inner wall of a sleeve and a glue injection space is formed between each other, the The sleeve has a glue injection hole communicating with the glue injection space; and

Step S2C: the resin is injected into the injection space through the injection hole, and the first resin optical lens is formed between the first glass optical lens and the second glass optical lens.

In one embodiment, the material of the resin is a phenol resin.

Compared with the aforementioned prior art, such as the Republic of China New Patent Publication No. M399992 and Invention Patent Publication No. 201248237, the first resin optical lens of the present invention not only provides the function of bonding or protection, but also has optical characteristics. The design of the optical element is made more flexible, and because the volume is fully utilized, the purpose of thin design can be achieved and the manufacturing cost can be reduced, and in addition, excellent optical performance can be exhibited. Compared with the manufacturing method of the optical element disclosed in the Republic of China Invention Patent Publication No. 201026488, the present invention integrates the first resin optical lens and the first glass optical lens with both bonding, protection and optical characteristics. As a whole, it will provide excellent optical effects.

The detailed description and technical contents of the present invention are described below with reference to the drawings:

Please refer to "Fig. 1" for a schematic cross-sectional view of an optical element according to a first embodiment of the present invention. The present invention is an optical element including a first glass optical lens 10 and a first resin optical lens 20. A glass optical lens 10 has a first surface 11 and a second surface 12 away from the first surface 11. The first resin optical lens 20 is formed on the first glass optical lens 10 opposite to the first surface 11. The first resin optical lens 20 is made of a resin having an optical function so as to have an optical characteristic, and the first resin optical lens 20 includes a third surface 21 and a fourth surface 22. In this embodiment, the shape of the first surface 11, the second surface 12, the third surface 21, and the fourth surface 22 may be a flat surface, a convex surface, or a concave surface, and the curvature may be changed as required. In the embodiment, the first surface 11, the second surface 12, the third surface 21 and the fourth surface 22 are all planes.

Please refer to "Figure 2", which is a schematic cross-sectional view of an optical element according to a second embodiment of the present invention. Compared with the first embodiment, the optical element further includes a second glass optical lens 30, the second glass optical lens 30 is formed on the third surface 21 of the first resin optical lens 20 away from the first glass optical lens 10. The second glass optical lens 30 includes a fifth surface 31 and a sixth surface 32. In this embodiment, the first surface 11 is convex, the second surface 12 is concave, the third surface 21 is convex, the fourth surface 22 is concave, the fifth surface 31 is convex, and the sixth surface 32 is concave.

Please refer to "FIG. 3", which is a schematic cross-sectional view of an optical element according to a third embodiment of the present invention. Compared with the first embodiment, the optical element further includes a second resin optical lens 40, and the second resin optical lens 40 is made of a resin having an optical function so as to have an optical characteristic. The second resin optical lens 40 includes a seventh surface 41 and an eighth surface 42. In this embodiment, the first surface 11 and the second surface 12 are convex, the third surface 21 is convex, the fourth surface 22 is concave, the seventh surface 41 is concave, and the eighth surface 42 is Convex. The above is only an example. In the present invention, the fifth surface 31, the sixth surface 32, the seventh surface 41, and the eighth surface 42 may be flat, convex, or concave.

The present invention also provides an optical module including at least one optical element, and the optical element is selected from the group consisting of:

A. A first optical element, including a first glass optical lens 10 and a first resin optical lens 20, the first glass optical lens 10 is made of a glass material and has a first surface 11, the first The resin optical lens 20 is formed on the first surface 11 by a resin having an optical function characteristic. Since the first optical element is similar to the optical element of the first embodiment of the present invention, it will not be described again.

B. A second optical element includes a first glass optical lens 10, a first resin optical lens 20, and a second glass optical lens 30. The first glass optical lens 10 is made of a glass material and has a A first surface 11, the first resin optical lens 20 is formed on the first surface 11 by a resin having an optical function characteristic, and the second glass optical lens 30 is formed on the first resin optical lens 20 away from the first A third surface 21 of a glass optical lens 10. Since the second optical element is similar to the optical element of the second embodiment of the present invention, it will not be described again.

C. A third optical element includes a first glass optical lens 10, a first resin optical lens 20, and a second resin optical lens 40. The first glass optical lens 10 is made of a glass material and has a A first surface 11, the first resin optical lens 20 is formed on the first surface 11 from a resin having an optical function characteristic, and the second resin optical lens 40 is formed on the first glass optical lens 10 away from the first A surface 11 is a second surface 12. Since the third optical element is similar to the optical element of the third embodiment of the present invention, it will not be described again.

In addition to the combinations described above, the optical elements of the first, second, or third embodiments of the present invention may be combined with a single lens, as described in detail below.

Please continue to refer to “FIG. 4”, which is a schematic cross-sectional view of an optical element according to a fourth embodiment of the present invention. This embodiment is based on the third embodiment and further includes at least a third lens 50, the third lens 50 is formed on a side of the first resin optical lens 20 away from the first glass optical lens 10. The first glass optical lens 10, the first resin optical lens 20, the second resin optical lens 40 and the third lens 50 are arranged along an optical axis X. In this embodiment, the third lens 50 may be a glass optical lens or a resin optical lens, and the number may be between 1 and 50. In addition, in one embodiment, some or all of the third lenses 50 may be spaced apart from each other or bonded to each other; or, in another embodiment, the third lenses 50 using the resin optical lens are mutually The third lens 50 using the glass optical lens can be inserted and bonded to each other.

Please continue to refer to "FIG. 5", which is a schematic cross-sectional view of an optical element according to a fifth embodiment of the present invention. This embodiment is based on the third embodiment and further includes at least a fourth lens 51. The fourth lens 51 is formed on a side of the second resin optical lens 40 away from the first glass optical lens 10. The first glass optical lens 10, the first resin optical lens 20, the second resin optical lens 40, and the fourth lens 51 are arranged along an optical axis X. In this embodiment, the fourth lens 51 may be a glass optical lens or a resin optical lens, and the number may be between 1 and 50. In addition, in one embodiment, some or all of the fourth lenses 51 may be spaced apart from each other or bonded to each other; or, in another embodiment, the fourth lenses 51 using the resin optical lens are mutually The fourth lens 51 using the glass optical lens can be inserted and bonded to each other.

Please refer to FIG. 6 again, which is a schematic cross-sectional view of an optical element according to a sixth embodiment of the present invention. This embodiment is based on the third embodiment, and further includes the third lens 50 and the fourth lens 51. The features of the third lens element 50 and the fourth lens element 51 are as described above, and are not repeated here.

Please continue to refer to "FIG. 7", which is a schematic cross-sectional view of an optical element according to a seventh embodiment of the present invention. This embodiment is based on the second embodiment and further includes at least a fifth lens 60. The fifth lens 60 is formed on a side of the second glass optical lens 30 away from the first resin optical lens 20. The first glass optical lens 10, the first resin optical lens 20, the second glass optical lens 30 and the fifth lens 60 are arranged along an optical axis X. In this embodiment, the fifth lens 60 may be a glass optical lens or a resin optical lens, and the number may be between 1 and 50. In addition, in one embodiment, some or all of the fifth lenses 60 may be spaced apart from each other or bonded to each other; or, in another embodiment, the fifth lenses 60 using the resin optical lens are mutually The fifth lens 60 using the glass optical lens can be inserted and bonded to each other.

Please continue to refer to FIG. 8, which is a schematic cross-sectional view of an optical element according to an eighth embodiment of the present invention. This embodiment is based on the second embodiment and further includes at least a sixth lens 61. The sixth lens 61 is formed on a side of the first glass optical lens 10 away from the first resin optical lens 20. The first glass optical lens 10, the first resin optical lens 20, the second glass optical lens 30 and the sixth lens 61 are arranged along an optical axis X. In this embodiment, the sixth lens 61 may be a glass optical lens or a resin optical lens, and the number may be between 1 and 50. In addition, in one embodiment, some or all of the sixth lenses 61 may be spaced apart or bonded to each other; or, in another embodiment, the sixth lenses 61 using the resin optical lens are mutually The sixth lens 61 using the glass optical lens can be inserted and bonded to each other.

Please refer to FIG. 9 again, which is a schematic cross-sectional view of an optical element according to a ninth embodiment of the present invention. This embodiment is based on the second embodiment, and further includes the fifth lens 60 and the sixth lens 61. The features of the fifth lens 60 and the sixth lens 61 are as described above, and are not repeated here.

The shape of the third lens 50, the fourth lens 51, the fifth lens 60, and the sixth lens 61 may be a plano-convex, plano-concave, bi-convex, bi-concave, or concave-convex structure, depending on the actual application.

The present invention further provides a method for manufacturing an optical element. First, a first glass optical lens 10 is provided, and then a resin having an optical function characteristic is formed on a first surface 11 of the first glass optical lens 10 to obtain a first glass optical lens 10. First resin optical lens 20. Specific embodiments of the method will be described below.

Please refer to "Fig. 10A" and "Fig. 10B" together for a flowchart of the manufacturing steps of the optical element according to an embodiment of the present invention, which adopts a molding method. The manufacturing steps are as follows:

Step S1A: As shown in FIG. 10A, a first peripheral edge 13 of the first glass optical lens 10 is fixed on an inner wall 71 of a sleeve 70.

Step S2A: As shown in FIG. 10B, first place the resin on the first surface 11, and then use a mold 80 to squeeze the resin in the direction of the first surface 11 of the first glass optical lens 10. The first resin optical lens 20 is formed on the first surface 11.

In addition to the above-mentioned manufacturing of optical elements similar to the first embodiment, the molding method can also be used to manufacture optical elements similar to the third embodiment. Please refer to "Fig. 11A" to "Fig. 11C" for a match. In the embodiment, a flowchart of the manufacturing steps of the optical element is as follows:

Step S1B: As shown in FIG. 11A, a first peripheral edge 13 of a first glass optical lens 10 is fixed on an inner wall 71 of a sleeve 70.

Step S2B: As shown in FIG. 11B, a first resin is first placed on the first surface 11, and then a first mold core 81 is used to face the first surface 11 of the first glass optical lens 10. The first resin is pressed to form the first resin optical lens 20 on the first surface 11.

Step S3B: As shown in FIG. 11C, a second resin is first placed on a second surface 12 of the first glass optical lens 10, and then a second mold 82 is used to move away from the first glass optical lens 10 A direction of the second surface 12 of the first surface 11 is pressed against the second resin, and a second resin optical lens 40 is formed on the second surface 12. In this embodiment, the first resin optical lens 20 and the second resin optical lens 40 may be formed on the first surface 11 and the second surface 12, respectively, or may be formed on the first surface 11 and the first surface simultaneously. Two surfaces 12.

Please refer to "Fig. 12A" and "Fig. 12B", which is a flowchart of the manufacturing steps of the optical element in another embodiment of the present invention, which adopts the glue injection method. The manufacturing steps are as follows:

Step S1C: As shown in FIG. 12A, a first peripheral edge 13 of a first glass optical lens 10 and a second peripheral edge 33 of a second glass optical lens 30 are respectively fixed in a sleeve 70. On the wall 71, the first glass optical lens 10 and the second glass optical lens 30 are separated from each other to form a glue injection space 72. The sleeve 70 has a glue injection hole 73 communicating with the glue injection space 72. .

Step S2C: As shown in FIG. 12B, a resin is injected into the injection space 72 through the injection hole 73 to form the first glass optical lens 10 and the second glass optical lens 30. Resin optical lens 20. In another embodiment, the sleeve 70 further includes a vent hole, which is used for discharging the gas in the injection space 72 when the resin is injected into the injection space 72 to make the injection space The pressure in 72 remains balanced. In addition, the first glass optical lens 10 or the second glass optical lens 30 can also be replaced with the mold core 80. After the first resin optical lens 20 is formed, the mold core 80 can be removed, and manufactured as " The optical element shown in Fig. 1 ". It should be particularly noted that the glue injection method in this embodiment can glue two glass optical lenses of the same shape to each other, for example, two glass optical lenses with convex surfaces or two glass optical lenses with concave surfaces. Taking "Fig. 9" as an example, the first resin optical lens 20 is used for bonding the first glass optical lens 10 and the second glass optical lens 30, which are convex surfaces, respectively.

In addition, in the present invention, the resin, the first resin, and the second resin may be phenol resins or other resins having optical functions. In addition, the first resin optical lens 20 and the second resin optical lens 40 preferably have a thickness of at least greater than 0.2 mm.

In summary, the effect of the present invention compared to the prior art is that the first resin optical lens not only provides the function of fitting or protection, but also has optical characteristics, making the design of the optical element more flexible, and Because the volume is fully utilized, it can achieve the purpose of thin design and reduce manufacturing costs. In addition, the present invention integrates the first resin optical lens and the first glass optical lens, which have bonding, protection and optical characteristics, to provide excellent optical effects as a whole.

The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, and the scope of implementation of the present invention cannot be limited. That is, all equivalent changes and modifications made in accordance with the scope of the application of the present invention should still fall within the scope of the patent of the present invention.

10‧‧‧The first glass optical lens
11‧‧‧ the first surface
12‧‧‧ second surface
13‧‧‧First perimeter
20‧‧‧The first resin optical lens
21‧‧‧ third surface
22‧‧‧ fourth surface
30‧‧‧Second glass optical lens
31‧‧‧ fifth surface
32‧‧‧ sixth surface
33‧‧‧Second perimeter
40‧‧‧Second resin optical lens
41‧‧‧Seventh surface
42‧‧‧ Eighth Surface
50‧‧‧ third lens
51‧‧‧Fourth lens
60‧‧‧Fifth lens
61‧‧‧Sixth lens
70‧‧‧ sleeve
71‧‧‧Inner wall
72‧‧‧ Injection space
73‧‧‧Injection hole
80‧‧‧ Mould
81‧‧‧First Mould
82‧‧‧Second Mould
X‧‧‧ Optical axis

[FIG. 1] A schematic cross-sectional view of an optical element according to a first embodiment of the present invention. [Figure 2] A schematic cross-sectional view of an optical element according to a second embodiment of the present invention. [Fig. 3] A schematic cross-sectional view of an optical element according to a third embodiment of the present invention. [FIG. 4] A schematic cross-sectional view of an optical element according to a fourth embodiment of the present invention. [FIG. 5] A schematic cross-sectional view of an optical element according to a fifth embodiment of the present invention. [FIG. 6] A schematic cross-sectional view of an optical element according to a sixth embodiment of the present invention. [FIG. 7] A schematic cross-sectional view of an optical element according to a seventh embodiment of the present invention. [FIG. 8] A schematic cross-sectional view of an optical element according to an eighth embodiment of the present invention. [FIG. 9] A schematic cross-sectional view of an optical element according to a ninth embodiment of the present invention. [Fig. 10A] and [Fig. 10B] are flowcharts of manufacturing steps of the optical element in an embodiment of the present invention. [FIG. 11A] to FIG. 11C are flowcharts of manufacturing steps of the optical element in another embodiment of the present invention. [FIG. 12A] and [FIG. 12B] are flowcharts of manufacturing steps of the optical element in another embodiment of the present invention.

10‧‧‧The first glass optical lens

11‧‧‧ the first surface

12‧‧‧ second surface

20‧‧‧The first resin optical lens

21‧‧‧ third surface

22‧‧‧ fourth surface

30‧‧‧Second glass optical lens

31‧‧‧ fifth surface

32‧‧‧ sixth surface

Claims (17)

An optical element includes: a first glass optical lens, which is made of a glass material and has a first surface; and a first resin optical lens, which is formed on the first resin with an optical function characteristic surface. The optical element according to item 1 of the patent application scope, wherein the shape of the first surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface. The optical element according to item 1 of the patent application scope further comprises a second resin optical lens formed on a second surface of the first glass optical lens away from the first surface. The optical element according to item 3 of the scope of patent application, wherein the shape of the second surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface. The optical element according to item 1 of the patent application scope further includes a second glass optical lens formed on a third surface of the first resin optical lens away from the first glass optical lens. The optical element according to item 1 of the patent application scope, wherein a material of the resin is a phenol resin. The optical element according to item 1 of the patent application scope, wherein the first resin optical lens has a thickness of at least greater than 0.2 mm. An optical module includes at least one optical element selected from the group consisting of: a first optical element including: a first glass optical lens made of a glass material and having a first A surface; and a first resin optical lens formed on the first surface by a resin having an optical function characteristic; a second optical element including: a first glass optical lens made of a glass material And has a first surface; a first resin optical lens formed by a resin having an optical function characteristic on the first surface; and a second glass optical lens formed on the first resin optical lens away from the first A third surface of a glass optical lens; and a third optical element, including: a first glass optical lens made of a glass material and having a first surface; a first resin optical lens made of a A resin having an optical function characteristic is formed on the first surface; and a second resin optical lens is formed on the first glass optical lens away from the first watch. A second surface. The optical module according to item 8 of the scope of patent application, wherein the shape of the first surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface. The optical module according to item 8 of the scope of patent application, wherein the shape of the second surface is selected from the group consisting of a flat surface, a convex surface, and a concave surface. The optical module according to item 8 of the scope of patent application, wherein a material of the resin is a phenol resin. According to the optical module of claim 8, the first resin optical lens and the second resin optical lens have a thickness of at least greater than 0.2 mm. A method for manufacturing an optical element includes firstly providing a first glass optical lens having a first surface, and forming a resin having an optical function on the first surface of the first glass optical lens to obtain a first Resin optical lens. The method for manufacturing an optical element according to item 13 of the scope of patent application, further comprising the following steps: Step S1A: fixing a first peripheral edge of the first glass optical lens to an inner wall of a sleeve; and Step S2A: using a mold to squeeze the resin toward the first surface of the first glass optical lens to form the first resin optical lens on the first surface. The method for manufacturing an optical element according to item 13 of the scope of patent application, further comprising the following steps: Step S1B: fixing a first peripheral edge of the first glass optical lens to an inner wall of a sleeve; S2B: using a first mold core to squeeze a first resin toward the first surface of the first glass optical lens to form the first resin optical lens on the first surface; and step S3B: using A second mold core presses a second resin toward a second surface of the first glass optical lens away from the first surface to form a second resin optical lens on the second surface. The method for manufacturing an optical element according to item 13 of the patent application scope, further comprising the following steps: Step S1C: a first peripheral edge of the first glass optical lens and a second peripheral edge of a second glass optical lens Respectively fixed on an inner wall of a sleeve and forming a glue injection space therebetween, the sleeve having a glue injection hole communicating with the glue injection space; and step S2C: injecting the resin through the glue injection hole The plastic injection space forms the first resin optical lens between the first glass optical lens and the second glass optical lens. The method for manufacturing an optical element according to item 13 of the patent application, wherein the material of the resin is a phenol resin.