Optical lens module

Abstract

The utility model discloses an optical lens module which comprises a first lens, a second lens and a third lens which are sequentially arranged, and further comprises a first space ring and a second space ring, the first space ring is supported between the first lens and the third lens, and the second space ring is supported between the second lens and the third lens. The inner side of the first space ring is provided with a first step part for bearing the second lens and a second step part for bearing the second space ring, the outer edge of the second lens is provided with a third step part matched with the first step part, and the third step part is arranged on the first step part so as to mount the second lens on the first step part; and the second space ring is arranged between the first lens and the second lens, is provided with an inner side part for extinction, and is mounted on the second step part. According to the utility model, a combined space ring formed by the first space ring and the second space ring is adopted, so that only one first space ring needs to be installed between the first lens and the third lens, the accumulated tolerance in the optical path direction is reduced, and the yield of the optical lens module is higher.

Description

Technical Field

[0001] The utility model relates to the field of lenses, and particularly to an optical lens module. Background Art

[0002] In the existing lens module, there are usually multiple lenses. Some adjacent lenses are isolated by spacer rings. For the case where a spacer ring needs to be provided for both the upper and lower parts of the lens, the setting of multiple spacer rings greatly increases the installation complexity of the lens module and reduces the yield of the lens module, which is very unfavorable for the production of the lens module. Summary of the Invention

[0003] The purpose of the utility model is to provide an optical lens module to solve the problems of high installation complexity and low yield of the existing lens module.

[0004] To achieve the above purpose, an optical lens module provided by the utility model is characterized in that it includes a first lens, a second lens, and a third lens arranged in sequence along the optical path. The first lens and the third lens are plastic lenses, and the second lens is a glass lens. The optical lens module further includes a first spacer ring and a second spacer ring that cooperates with the first spacer ring. Both the first spacer ring and the second spacer ring are annular. The first spacer ring is supported between the first lens and the third lens. The inner side of the first spacer ring is provided with a first step portion for carrying the second lens and a second step portion for carrying the second spacer ring. The outer edge of the second lens is provided with a third step portion that cooperates with the first step portion. The third step portion is arranged on the first step portion to mount the second lens on the first step portion. The second spacer ring is arranged between the first lens and the second lens. The second spacer ring has an inner side portion for light extinction and is mounted on the second step portion.

[0005] Preferably, the second step portion has a step surface. The second spacer ring has a first lower end surface that cooperates with the step surface and a first upper end surface opposite to the first lower end surface. The first lower end surface extends beyond the step surface. A connecting surface is further connected between the second step portion and the first step portion. The connecting surface, the second spacer ring, and the second lens enclose a first glue dispensing cavity.

[0006] Preferably, the connecting surface is an inclined surface that slopes away from the second lens.

[0007] Preferably, the angle between the connecting surface and the vertical direction is greater than 0 degrees and less than 60 degrees.

[0008] Preferably, the connecting surface has a lower end portion close to the second lens, and the lower end portion is lower than the upper edge of the second lens.

[0009] Preferably, a recessed portion is recessed from the outer edge of the first upper end surface into the interior of the second spacer ring. A second glue application cavity is formed among the recessed portion, the first spacer ring, and the first lens.

[0010] Preferably, a spacing is provided between the first upper end surface of the second spacer ring and the first lens.

[0011] Preferably, the materials of the first spacer ring and the second spacer ring are both copper, and the outer surfaces of the first spacer ring and the second spacer ring both have an oxidized black layer.

[0012] Preferably, the optical lens module further includes a lens barrel, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and a filter. The fourth lens is a glass lens, the fifth lens, the sixth lens, and the seventh lens are plastic lenses. The fourth lens, the fifth lens, the first lens, the second lens, the third lens, the sixth lens, the seventh lens, and the filter are arranged in sequence along the optical path and are disposed inside the lens barrel. A first light-shielding sheet is provided between the fifth lens and the first lens, a second light-shielding sheet is provided between the third lens and the sixth lens, and a third spacer ring is provided between the sixth lens and the seventh lens.

[0013] Compared with the prior art, the present utility model adopts a combined spacer ring formed by the first spacer ring and the second spacer ring, such that only one first spacer ring needs to be installed between the first lens and the third lens, and a first step portion is provided on the first spacer ring to install the second lens, saving installation time and reducing the cumulative tolerance in the optical path direction. The yield of the optical lens module is higher and the installation complexity is lower. Description of the Drawings

[0014] Figure 1 is a structural diagram of the optical lens module of the present utility model.

[0015] Figure 2 is Figure 1 an enlarged view of part A in Detailed Embodiments

[0016] To describe in detail the technical content, structural features, and achieved effects of the present utility model, the following is described in detail in conjunction with the embodiments and with reference to the drawings.

[0017] As Figures 1 to 2As shown in the figure, an embodiment of the present utility model provides an optical lens module, which includes a first lens 10, a second lens 20, and a third lens 30 arranged in sequence along the optical path. The first lens 10 and the third lens 30 are plastic lenses, and the second lens 20 is a glass lens. The optical lens module further includes a first spacer 1 and a second spacer 2 that cooperates with the first spacer 1. Both the first spacer 1 and the second spacer 2 are annular. The first spacer 1 is supported between the first lens 10 and the third lens 30. The inner side of the first spacer 1 is provided with a first step portion 13 for carrying the second lens 20 and a second step portion 14 for carrying the second spacer 2. The outer edge of the second lens 20 is provided with a third step portion 201 that cooperates with the first step portion 13. The third step portion 201 is arranged on the first step portion 13 to mount the second lens 20 on the first step portion 13. The second spacer 2 is arranged between the first lens 10 and the second lens 20. The second spacer 2 has an inner side portion 23 for light extinction, and the second spacer 2 is mounted on the second step portion 14. Specifically, the first spacer 1 has a second upper end face 12 and a second lower end face 11 opposite to the second upper end face 12. The second upper end face 12 abuts against the first lens 10, and the second lower end face 11 abuts against the third lens 30, that is, the first spacer 1 is supported between the first lens 10 and the third lens 30. Both the first step portion 13 and the second step portion 14 are annular, and the first step portion 13 is arranged close to the third lens 30, and the second step portion 14 is arranged close to the first lens 10. The first step portion 13 fits the outer peripheral surface of the second lens 20. The second spacer 2 has an inner side portion 23 facing the axis of the second spacer 2. The inner side surface 23 is used to eliminate the stray light between the first lens 10 and the second lens 20 and does not affect the optical path between the first lens 10 and the second lens 20. Since the second spacer 2 only needs to be mounted on the second step portion 14 and does not affect the installation tolerance in the optical path direction of the optical lens module, the installation accuracy requirement of the second spacer 2 can be relatively low, which is convenient for installation.

[0018] The embodiment of the present utility model adopts the combined spacer formed by the first spacer 1 and the second spacer 2, so that only one first spacer 1 needs to be installed between the first lens 10 and the third lens 30, and the first step portion 13 is provided on the first spacer 1 to install the second lens 20, which saves installation time and reduces the cumulative tolerance in the optical path direction. The yield of the optical lens module is higher and the installation complexity is low.

[0019] In the embodiment of the present utility model, the second step portion 14 has a step surface 141. The second spacer 2 has a first lower end surface 21 that cooperates with the step surface 141 and a first upper end surface 22 opposite to the first lower end surface 21. The first lower end surface 21 extends beyond the step surface 141. A connecting surface 15 is also connected between the second step portion 14 and the first step portion 13. The connecting surface 15, the second spacer 2, and the second lens 20 enclose a first glue application cavity 3. Specifically, the second step portion 14 includes a step surface 141 perpendicular to the optical path direction and an abutting surface 142 along the optical path direction. The abutting surface 142 extends towards the first lens 10. The outer peripheral surface of the second spacer 2 is attached to the abutting surface 142. Through the setting of the first glue application cavity 3, glue can be set in the first glue application cavity 3 to adhesively fix the second lens 20 to the first spacer 1 and the second spacer 2, with a clever design.

[0020] Furthermore, the connecting surface 15 is an inclined surface. The connecting surface 15 is inclined in a direction away from the second lens 20. The angle between the connecting surface 15 and the vertical direction is greater than 0 degrees and less than 60 degrees. Through the setting of the inclined surface, while ensuring a relatively high support strength of the first spacer 1, the area of the first glue application cavity 3 is relatively large, with a clever design.

[0021] In the embodiment of the present utility model, the connecting surface 15 has a lower end portion close to the second lens 20, and the lower end portion is lower than the upper edge of the second lens 20. Specifically, as Figure 2 shown, the upper edge of the second lens 20 is the outer edge on the side close to the first lens 10. Setting the lower end portion of the connecting surface 15 lower than the upper edge of the second lens 20 can avoid interference during the installation of the second lens 20, making the installation more convenient.

[0022] In the embodiment of the present utility model, a recessed portion 221 is recessed from the outer edge of the first upper end surface 22 towards the inside of the second spacer 2. The recessed portion 221, the first spacer 1, and the first lens 10 enclose a second glue application cavity 4. The outer edge of the first upper end surface 22 is the edge on the side close to the first spacer 1. Through the setting of the second glue application cavity 4, the first spacer 1, the second spacer 2, and the second lens 20 are further stably connected to each other, with a good connection effect and high stability.

[0023] In the embodiment of the present utility model, the first upper end surface 22 of the second spacer 2 is spaced from the first lens 10, avoiding the influence of the first lens 10 on the second spacer 2 during installation, with a clever design.

[0024] In the embodiment of the present utility model, the materials of both the first spacer 1 and the second spacer 2 are copper. The outer surfaces of both the first spacer 1 and the second spacer 2 have an oxidized black layer. The support strength and light extinction property of the combined spacer formed by the first spacer 1 and the second spacer 2 are both very good.

[0025] In an embodiment of the present utility model, the optical lens module further includes a lens barrel 90, a fourth lens 40, a fifth lens 50, a sixth lens 60, a seventh lens 70, and a filter 80. The fourth lens 40 is a glass lens, and the fifth lens 50, the sixth lens 60, and the seventh lens 70 are plastic lenses. The fourth lens 40, the fifth lens 50, the first lens 10, the second lens 20, the third lens 30, the sixth lens 60, the seventh lens 70, and the filter 80 are arranged in sequence along the optical path and are disposed within the lens barrel 90. A first light-shielding sheet 6 is provided between the fifth lens 50 and the first lens 10, a second light-shielding sheet 7 is provided between the third lens 30 and the sixth lens 60, and a third spacer 5 is provided between the sixth lens 60 and the seventh lens 70. The optical lens module of this embodiment can be used for an outdoor camera lens, has a compact structure, is convenient to install, and has a very high yield.

[0026] The above-disclosed are only the preferred examples of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An optical lens module, characterized in that: It comprises a first lens, a second lens and a third lens arranged in sequence along the optical path, wherein the first lens and the third lens are plastic lenses, and the second lens is a glass lens; The optical lens module also includes a first spacer and a second spacer that cooperates with the first spacer. The first spacer and the second spacer are both annular. The first spacer is supported between the first lens and the third lens. The inner side of the first spacer is provided with a first step portion that supports the second lens and a second step portion that supports the second spacer. The outer edge of the second lens is provided with a third step portion that cooperates with the first step portion. The third step portion is provided on the first step portion to install the second lens on the first step portion. The second spacer is provided between the first lens and the second lens. The second spacer has an inner portion for extinction and the second spacer is installed on the second step portion.

2. The optical lens module according to claim 1, characterized in that: The second step portion has a step surface, the second spacer has a first lower end surface matching the step surface and a first upper end surface opposite to the first lower end surface, the first lower end surface is arranged beyond the step surface, and a connecting surface is connected between the second step portion and the first step portion, and a first glue dispensing cavity is formed between the connecting surface, the second spacer and the second lens.

3. The optical lens module according to claim 2, characterized in that: The connecting surface is an inclined surface, and the connecting surface is inclined in a direction away from the second lens.

4. The optical lens module according to claim 3, characterized in that: The angle between the connecting surface and the vertical direction is greater than 0 degrees and less than 60 degrees.

5. The optical lens module according to claim 3, characterized in that: The connecting surface has a lower end portion close to the second lens, and the lower end portion is lower than an upper edge of the second lens.

6. The optical lens module according to claim 2, characterized in that: The outer edge of the first upper end surface is recessed toward the inside of the second spacer to form a recessed portion, and the recessed portion, the first spacer and the first lens form a second glue dispensing cavity.

7. The optical lens module according to claim 2, wherein: The first upper end surface of the second spacer is spaced apart from the first lens.

8. The optical lens module according to claim 1, wherein: The first spacer and the second spacer are both made of copper, and the outer surfaces of the first spacer and the second spacer are both provided with a black oxide layer.

9. The optical lens module according to claim 1, wherein: The optical lens module also includes a lens barrel, a fourth lens, a fifth lens, a sixth lens, a seventh lens and a filter, the fourth lens is a glass lens, the fifth lens, the sixth lens and the seventh lens are plastic lenses, the fourth lens, the fifth lens, the first lens, the second lens, the third lens, the sixth lens, the seventh lens and the filter are arranged in sequence along the light path and arranged in the lens barrel, a first shading sheet is provided between the fifth lens and the first lens, a second shading sheet is provided between the third lens and the sixth lens, and a third spacer is provided between the sixth lens and the seventh lens.

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