Lens module without space ring

Abstract

The utility model discloses a lens module without a space ring, which comprises a lens cone, and a first plastic lens, a second plastic lens, a third plastic lens, a fourth plastic lens and an optical filter which are arranged in the lens cone and are tightly connected. The fourth plastic lens comprises an optical part and an assembly part surrounding the optical part, the optical part comprises an image side surface close to the image side, and the image side surface is recessed towards the third plastic lens; the assembling part is provided with a first side close to the optical filter, the surface of the first side is provided with a plane part, the plane part abuts against the optical filter, the edge of the first side of the assembling part is concaved towards the third plastic lens to form a concave part, and the concave part, the inner wall of the lens barrel and the optical filter define a glue containing cavity; and glue is arranged in the glue accommodating cavity so as to fix the first plastic lens, the second plastic lens, the third plastic lens, the fourth plastic lens and the optical filter in the lens cone. The utility model has a simple structure and is convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the field of lens modules, in particular to a lens module without a spacer. Background Art

[0002] With the continuous development of science and technology, electronic devices are constantly moving towards intelligence. In addition to digital cameras, portable electronic devices such as tablets and mobile phones are also equipped with lens modules with photo and video functions to meet the needs of users to take pictures at any time.

[0003] The lens module usually includes a lens barrel, a plurality of lenses arranged in the lens barrel, and a filter. Each lens is usually connected to the lens barrel by adhesive, and the adhesive cavity containing the adhesive is usually arranged on an additionally configured spacer ring component, which makes installation inconvenient, and the lens module is large in size and high in cost. Summary of the invention

[0004] The utility model aims to provide a lens module without a spacer, so as to solve the problems that the existing glue containing cavity for containing glue needs to be arranged on an additional spacer component, which is inconvenient to install and the size of the lens module is large and the cost is high.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a lens module without a spacer, comprising a lens barrel and a first plastic lens, a second plastic lens, a third plastic lens, a fourth plastic lens and a filter arranged in sequence along an optical path inside the lens barrel, wherein the first plastic lens, the second plastic lens, the third plastic lens, the fourth plastic lens and the filter are tightly connected, the fourth plastic lens comprises an optical part and an assembly part arranged around the optical part, the optical part comprises an object side surface close to the object side and an image side surface close to the image side, and the image side surface is concave toward the third plastic lens; the assembly part The outer peripheral surface of the assembly part is abutted and connected with the inner wall of the lens barrel, the assembly part has a first side close to the filter, a plane part is provided on the surface of the first side, the plane part is abutted and connected with the filter, the edge of the first side of the assembly part is recessed with a recessed part toward the third plastic lens, the recessed part extends to the outer peripheral surface of the assembly part, the recessed part, the inner wall of the lens barrel and the filter form a glue cavity, and glue is provided in the glue cavity to fix the first plastic lens, the second plastic lens, the third plastic lens, the fourth plastic lens and the filter in the lens barrel.

[0006] Preferably, the recessed portion has a bottom portion and a side portion connected to the bottom portion, and an angle between the bottom portion and the side portion is greater than or equal to 100 degrees and less than or equal to 140 degrees.

[0007] Preferably, the side surface portion, the planar surface portion and the image side surface of the recessed portion are connected in sequence.

[0008] Preferably, a first plane abutting against the lens barrel is provided on one side edge of the first plastic lens, a second plane abutting against the second plastic lens is provided on the other side edge of the first plastic lens, a third plane abutting against the first plastic lens is provided on one side edge of the second plastic lens, a fourth plane abutting against the third plastic lens is provided on the other side edge of the second plastic lens, a first shading sheet is provided between the third plane and the second plane, a fifth plane abutting against the second plastic lens is provided on one side edge of the third plastic lens, a sixth plane abutting against the fourth plastic lens is provided on the other side edge of the third plastic lens, a second shading sheet is provided between the fifth plane and the fourth plane, a seventh plane abutting against the third plastic lens is provided on one side edge of the fourth plastic lens, the plane portion abutting against the filter is provided on the other side edge of the fourth plastic lens, and a third shading sheet is provided between the seventh plane and the sixth plane.

[0009] Preferably, the first light shielding sheet, the second light shielding sheet and the third light shielding sheet are all ring-shaped, and the first outer peripheral wall of the first light shielding sheet, the second outer peripheral wall of the second light shielding sheet and the third outer peripheral wall of the third light shielding sheet are all in contact with the inner wall of the lens barrel.

[0010] Preferably, a first guide escape portion is provided inwardly concave on an edge of a side of the first plastic lens away from the second plastic lens, a second guide escape portion is provided inwardly concave on an edge of a side of the second plastic lens facing the first plastic lens, a third guide escape portion is provided inwardly concave on an edge of a side of the third plastic lens facing the second plastic lens, and a fourth guide escape portion is provided inwardly concave on an edge of a side of the fourth plastic lens facing the third plastic lens.

[0011] Preferably, the fourth plastic lens has a contact surface contacting the inner wall of the lens barrel, a first end of the contact surface is connected to the bottom of the recessed portion, and a second end of the contact surface opposite to the first end is connected to the fourth guide avoidance portion.

[0012] Preferably, the distance between the bottom portion of the recessed portion and the filter is greater than or equal to 0.1 mm and less than or equal to 0.2 mm, and the maximum distance between the side portion of the recessed portion and the inner wall of the lens barrel is greater than or equal to 0.45 mm and less than or equal to 0.55 mm.

[0013] Compared with the prior art, the utility model fixes the first plastic lens, the second plastic lens, the third plastic lens, the fourth plastic lens and the filter in the lens barrel by directly setting a recessed portion on the fourth plastic lens connected to the filter, and the recessed portion, the filter and the inner wall of the lens barrel form a glue-containing cavity, thereby achieving a simple structure, more convenient assembly, no need to set up an additional spacer ring component specifically for accommodating glue, and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a lens module without a spacer according to an embodiment of the utility model.

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0016] In order to explain the technical content, structural features and effects achieved by the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.

[0017] like Figure 1 to Figure 2 As shown, the utility model provides a lens module without a spacer, comprising a lens barrel 1 and a first plastic lens 2, a second plastic lens 3, a third plastic lens 4, a fourth plastic lens 5 and a filter 6 arranged in sequence along an optical path inside the lens barrel 1, the first plastic lens 2, the second plastic lens 3, the third plastic lens 4, the fourth plastic lens 5 and the filter 6 are tightly connected, the fourth plastic lens 5 comprises an optical portion 51 and an assembly portion 52 arranged around the optical portion 51, the optical portion 51 comprises an object side surface 511 close to the object side and an image side surface 512 close to the image side, the image side surface 512 is recessed toward the third plastic lens 4; the outer peripheral surface of the assembly portion 52 is in contact with the lens barrel 1 The inner wall of the mounting portion 52 is abutted and connected, the mounting portion 52 has a first side 522 close to the filter 6 and a second side 532 opposite to the first side 522, a plane portion 5221 is provided on the surface of the first side 522, the plane portion 5221 is abutted and connected with the filter 6, the edge of the first side 522 of the mounting portion 52 is recessed with a recessed portion 524 toward the third plastic lens 4, the recessed portion 524 extends to the outer peripheral surface of the mounting portion 52, the recessed portion 524 and the inner wall of the lens barrel 1 and the filter 6 form a glue cavity, and adhesive is provided in the glue cavity to fix the first plastic lens 2, the second plastic lens 3, the third plastic lens 4, the fourth plastic lens 5 and the filter 6 in the lens barrel 1. Specifically, the first plastic lens 2, the second plastic lens 3, the third plastic lens 4, the fourth plastic lens 5 and the filter 6 are tightly connected in the lens barrel 1. When the fourth plastic lens 5 is connected to the filter 6 and the lens barrel 1 by adhesive, the first plastic lens 2, the second plastic lens 3, the third plastic lens 4, the fourth plastic lens 5 and the filter 6 can be fixed in the lens barrel 1, which is simple to operate and has a reasonable design.

[0018] In the embodiment of the utility model, a recessed portion 524 is directly provided on the fourth plastic lens 5 connected to the optical filter 6, and the recessed portion 524, the optical filter 6 and the inner wall of the lens barrel 1 form a glue-containing cavity, thereby achieving the goal of fixing the first plastic lens 2, the second plastic lens 3, the third plastic lens 4, the fourth plastic lens 5 and the optical filter 6 in the lens barrel 1. The structure is simple, the assembly is more convenient, there is no need to additionally provide a spacer ring component specifically for accommodating adhesive, and the cost is lower.

[0019] In the embodiment of the utility model, the recessed portion 524 has a bottom portion 5241 and a side portion 5242 connected to the bottom portion 5241, and the angle between the bottom portion 5241 and the side portion 5242 is greater than or equal to 100 degrees and less than or equal to 140 degrees. Specifically, by setting the angle between the bottom portion 5241 and the side portion 5242 to be greater than or equal to 100 degrees and less than or equal to 140 degrees, more adhesive can be contained in the adhesive cavity, so that the connection between the fourth plastic lens 5 and the filter 6 and the lens barrel 1 is more secure, and the size of the plane portion 5221 can be taken into consideration so that the abutment effect between the plane portion 5221 and the filter 6 is good, and no adhesive will flow to the optical portion 51.

[0020] In the embodiment of the utility model, the side surface 5242, the plane surface 5221 and the image side surface 512 of the recessed portion 524 are sequentially connected. Specifically, the side surface 5242, the plane surface 5221 and the image side surface 512 of the recessed portion 524 are sequentially connected, and the structure is more compact, which can better meet the needs of miniaturized lens modules.

[0021] In the embodiment of the utility model, a first plane 21 abutting against the lens barrel 1 is provided on one side edge of the first plastic lens 2, a second plane 22 abutting against the second plastic lens 3 is provided on the other side edge of the first plastic lens 2, a third plane 31 abutting against the first plastic lens 2 is provided on one side edge of the second plastic lens 3, a fourth plane 32 abutting against the third plastic lens 4 is provided on the other side edge of the second plastic lens 3, a first light shielding sheet 7 is provided between the third plane 31 and the second plane 22, a fifth plane 41 abutting against the second plastic lens 3 is provided on one side edge of the third plastic lens 4, a sixth plane 42 abutting against the fourth plastic lens 5 is provided on the other side edge of the third plastic lens 4, a second light shielding sheet 8 is provided between the fifth plane 41 and the fourth plane 32, a seventh plane 5231 abutting against the third plastic lens 4 is provided on one side edge of the fourth plastic lens 5, a plane portion 5221 abutting against the filter 6 is provided on the other side edge of the fourth plastic lens 5, and a third light shielding sheet 9 is provided between the seventh plane 5231 and the sixth plane 42. Specifically, the first light shielding sheet 7, the second light shielding sheet 8 and the third light shielding sheet 9 are all annular, and the first outer peripheral wall of the first light shielding sheet 7, the second outer peripheral wall of the second light shielding sheet 8 and the third outer peripheral wall of the third light shielding sheet 9 are all in contact with the inner wall of the lens barrel 1. The first plane 21, the second plane 22, the third plane 31, the fourth plane 32, the fifth plane 41, the sixth plane 42 and the seventh plane 5231 are arranged to make the contact between the first plastic lens 2, the second plastic lens 3, the third plastic lens 4 and the fourth plastic lens 5 more reliable, and the first outer peripheral wall of the first light shielding sheet 7, the second outer peripheral wall of the second light shielding sheet 8 and the third outer peripheral wall of the third light shielding sheet 9 are all in contact with the inner wall of the lens barrel 1, so that the second plastic lens 3, the third plastic lens 4 and the fourth plastic lens 5 can be completely shielded from light except for the light path area, and the shading effect is better.

[0022] In the embodiment of the utility model, the first plastic lens 2 is provided with a first guide avoidance portion 23 which is recessed inwardly at one side edge away from the second plastic lens 3, the second plastic lens 3 is provided with a second guide avoidance portion 33 which is recessed inwardly at one side edge facing the first plastic lens 2, the third plastic lens 4 is provided with a third guide avoidance portion 43 which is recessed inwardly at one side edge facing the second plastic lens 3, and the fourth plastic lens 5 is provided with a fourth guide avoidance portion 525 which is recessed inwardly at one side edge facing the third plastic lens 4. Specifically, by providing the first guide avoidance portion 23, the second guide avoidance portion 33, the third guide avoidance portion 43 and the fourth guide avoidance portion 525, on the one hand, the guiding installation of each lens can be facilitated, and on the other hand, interference between adjacent lenses can be avoided, which is a clever design.

[0023] In the embodiment of the utility model, the fourth plastic lens 5 is provided with an abutting surface 521 abutting against the inner wall of the lens barrel 1, the first end of the abutting surface 521 is connected to the bottom surface 5241 of the recessed portion 524, and the second end of the abutting surface 521 opposite to the first end is connected to the fourth guide avoidance portion 525. Specifically, the abutting surface 521 is provided on the outer peripheral surface of the fourth plastic lens 5, and the first end of the abutting surface 521 is connected to the bottom surface 5241 of the recessed portion 524, and the second end of the abutting surface 521 is connected to the fourth guide avoidance portion 525, so that the structure is compact.

[0024] In the embodiment of the utility model, the distance between the bottom portion 5241 of the recessed portion 524 and the filter 6 is greater than or equal to 0.1 mm and less than or equal to 0.2 mm, and the maximum distance between the side portion 5242 of the recessed portion 524 and the inner wall of the lens barrel 1 is greater than or equal to 0.45 mm and less than or equal to 0.55 mm. Specifically, the distance between the bottom portion 5241 and the filter 6 is less than the maximum distance between the side portion 5242 of the recessed portion 524 and the inner wall of the lens barrel 1, so that there is more glue between the fourth plastic lens 5 and the filter 6, and the connection area is larger, thereby ensuring the reliability of the connection of the lens module.

[0025] The above disclosure is only a preferred example of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A lens module without a spacer, characterized in that: The optical lens comprises a lens barrel, and a first plastic lens, a second plastic lens, a third plastic lens, a fourth plastic lens and a filter which are arranged in sequence along an optical path inside the lens barrel, wherein the first plastic lens, the second plastic lens, the third plastic lens, the fourth plastic lens and the filter are tightly connected, the fourth plastic lens comprises an optical portion and an assembly portion arranged around the optical portion, the optical portion comprises an object side surface close to the object side and an image side surface close to the image side, and the image side surface is concave facing the third plastic lens; The outer peripheral surface of the assembly portion is abutted and connected with the inner wall of the lens barrel. The assembly portion has a first side close to the filter. A plane portion is provided on the surface of the first side. The plane portion is abutted and connected with the filter. The edge of the first side of the assembly portion is recessed with a recessed portion toward the third plastic lens. The recessed portion extends to the outer peripheral surface of the assembly portion. The recessed portion, the inner wall of the lens barrel and the filter form a glue cavity. Glue is provided in the glue cavity to fix the first plastic lens, the second plastic lens, the third plastic lens, the fourth plastic lens and the filter in the lens barrel.

2. The lens module without a spacer as claimed in claim 1, characterized in that: The recessed portion has a bottom portion and a side portion connected to the bottom portion, and an included angle between the bottom portion and the side portion is greater than or equal to 100 degrees and less than or equal to 140 degrees.

3. The lens module without a spacer as claimed in claim 2, characterized in that: The side surface portion, the planar surface portion, and the image-side surface of the recessed portion are sequentially connected.

4. The lens module without a spacer as claimed in claim 2, characterized in that: A first plane abutting against the lens barrel is provided on one side edge of the first plastic lens, a second plane abutting against the second plastic lens is provided on the other side edge of the first plastic lens, a third plane abutting against the first plastic lens is provided on one side edge of the second plastic lens, a fourth plane abutting against the third plastic lens is provided on the other side edge of the second plastic lens, a first light shielding sheet is provided between the third plane and the second plane, a fifth plane abutting against the second plastic lens is provided on one side edge of the third plastic lens, a sixth plane abutting against the fourth plastic lens is provided on the other side edge of the third plastic lens, a second light shielding sheet is provided between the fifth plane and the fourth plane, a seventh plane abutting against the third plastic lens is provided on one side edge of the fourth plastic lens, the plane portion abutting against the filter is provided on the other side edge of the fourth plastic lens, and a third light shielding sheet is provided between the seventh plane and the sixth plane.

5. The lens module without a spacer as claimed in claim 4, characterized in that: The first light shielding sheet, the second light shielding sheet and the third light shielding sheet are all ring-shaped, and the first outer peripheral wall of the first light shielding sheet, the second outer peripheral wall of the second light shielding sheet and the third outer peripheral wall of the third light shielding sheet are all in contact with the inner wall of the lens barrel.

6. The lens module without a spacer as claimed in claim 1, characterized in that: A first guide escape portion is provided inwardly concave on an edge of a side of the first plastic lens away from the second plastic lens, a second guide escape portion is provided inwardly concave on an edge of a side of the second plastic lens facing the first plastic lens, a third guide escape portion is provided inwardly concave on an edge of a side of the third plastic lens facing the second plastic lens, and a fourth guide escape portion is provided inwardly concave on an edge of a side of the fourth plastic lens facing the third plastic lens.

7. The lens module without a spacer as claimed in claim 6, characterized in that: The fourth plastic lens is provided with a contact surface contacting the inner wall of the lens barrel, a first end of the contact surface is connected to the bottom surface of the recessed portion, and a second end of the contact surface opposite to the first end is connected to the fourth guide avoidance portion.

8. The lens module without a spacer as claimed in claim 2, characterized in that: The distance between the bottom of the recessed portion and the filter is greater than or equal to 0.1 mm and less than or equal to 0.2 mm, and the maximum distance between the side of the recessed portion and the inner wall of the lens barrel is greater than or equal to 0.45 mm and less than or equal to 0.55 mm.

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