KR101897010B1 - Lens assembly and method of fabricating the same - Google Patents

Abstract

A lens assembly and a method of manufacturing the same are disclosed. The lens assembly includes a first lens unit; And a light shielding layer coated on at least one side of the first lens unit and including a photoresist.

Description

[0001] LENS ASSEMBLY AND METHOD OF FABRICATING THE SAME [0002]

Embodiments relate to a lens assembly and a method of manufacturing the same.

Currently, a camera module is mounted in the manufacture of automobiles and endoscopes including an IT device such as a mobile communication terminal, a PDA, and an MP3 player. Such a camera module is a 300,000 pixel (VGA class) And various kinds of additional functions such as autofocusing (AF) and optical zooming can be implemented at a low cost of production.

In addition, currently manufactured camera modules include an image sensor module manufactured by a wire bonding method (COB: Chip Of Board), a flip chip method (COF: Chip Of Flexible) and a chip scale package method (CSP And is connected to the main board through an electrical connection means such as a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

In recent years, however, a camera module has been demanded from a user that can be directly mounted on a main board as in a general passive device, thereby simplifying a manufacturing process and reducing manufacturing cost.

Such a camera module is mainly manufactured by attaching an image sensor such as a CCD or a CMOS to a substrate by wire bonding or flip chip method. The image sensor collects an image of the object through the image sensor, And the stored data is converted into an electrical signal and displayed as an image through a display medium such as an LCD or a PC monitor in the apparatus.

The conventional camera module includes a housing in which an image sensor for converting an image signal received through a lens into an electrical signal is supported on a bottom surface, a lens group for collecting image signals of a subject to the image sensor, And a barrel.

At this time, a capacitor, which is an electrical component for driving an image sensor made of CCD or CMOS, and a mounting board (FPCB) having a chip component of the resistor are electrically coupled to the lower part of the housing.

In the conventional camera module thus configured, anisotropic conductive film (ACF: Anisotropic Conductive Film) is inserted between the substrate and the image sensor in a state that a plurality of circuit components are mounted on the mounting substrate (FPCB) Adhered and fixed, and an infrared cut filter portion is attached to the opposite surface.

In addition, in the state where the barrel and the housing in which a plurality of lens groups are incorporated are coupled by screwing, the pre-assembled mounting substrate is adhered and fixed to the bottom surface of the housing by a separate adhesive.

The focus adjustment is performed by setting a subject (resolution chart) to a predetermined distance in front of the barrel after the mounting substrate on which the image sensor is mounted and the housing coupled with the barrel are fixed to each other. The focus adjustment between the lens group and the image sensor is performed as the vertical transfer amount due to the rotation of the barrel threaded to the housing is adjusted.

The embodiments are directed to providing a freely designable lens assembly having improved performance and a method of manufacturing the lens assembly.

A lens assembly according to an embodiment includes a first lens unit; And a light shielding layer coated on at least one side of the first lens unit and including a photoresist.

A lens assembly according to an exemplary embodiment includes a lens portion including a curved surface; A support portion extending from the lens portion; And a light shielding layer disposed on a part of the curved surface of the support portion and the lens portion.

A method of manufacturing a lens assembly according to an embodiment includes providing a lens array substrate including a plurality of lens portions,

Coating a photoresist on the lens array substrate to form a photoresist layer, selectively irradiating the photoresist layer with light, selectively etching the photoresist layer, and cutting the lens array substrate .

A lens assembly according to an embodiment includes a light shielding layer including a photoresist. That is, in the lens assembly according to the embodiment, the light shielding layer can be formed by a photolithography process.

Accordingly, the light shielding layer can be aligned with the lens unit with high precision. That is, the lens portion of the lens unit and the opening portion of the light shielding layer can be aligned at the correct positions.

Accordingly, the lens assembly according to the embodiment has improved optical characteristics and can be easily manufactured.

1 is an exploded perspective view showing a camera module according to an embodiment.
2 is a cross-sectional view taken along line AA 'in Fig.
FIGS. 3 to 8 are views showing a process of manufacturing the camera module according to the embodiment.

In the description of the embodiments, it is to be understood that each lens, unit, section, hole, projection, groove or layer may be referred to as being "on" or "under" each lens, unit, Quot; on "and" under "include both being formed" directly "or" indirectly " . In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

1 is an exploded perspective view showing a camera module according to an embodiment. 2 is a cross-sectional view showing a section taken along the line A-A in Fig.

1 and 2, a camera module according to an embodiment includes a lens assembly 10, a lens guide 20, an IR filter 30, a sensing chip 40, a micro spacer 50, and a light shielding cover 60 ).

The lens assembly 10 refracts light incident to the outside and emits toward the sensing chip 40. The lens assembly 10 may condense the incident light. The lens assembly 10 includes a first lens unit 100, a second lens unit 200, a third lens unit 300, a first light shielding layer 410, a second light shielding layer 420, Layer 430, a fourth light-shielding layer 440, a fifth light-shielding layer 450, and a sixth light-shielding layer 460.

The first lens unit 100 is transparent and made of a photo-curable resin. The first lens unit 100 includes a first lens unit 110 and a first support unit 120.

The first lens unit 110 has a curved surface having a predetermined curvature. More specifically, the first lens unit 110 has a convex surface and a concave surface facing each other. The first lens unit 110 refracts incident light. The first lens unit 110 has a diameter of about 0.5 to 3 mm.

The first support part 120 extends laterally from the first lens part 110. The first support part 120 supports the first lens part 110.

The first support part 120 includes a first connection part 121 connected to the first lens part 110 and a first standoff part 122 connected to the first connection part 121 and extending downward, .

The first connection part 121 and the first standoff 122 are formed in a stepped manner and the lower surface of the first connection part 121 is disposed at a position higher than the lower surface of the first standoff 122 .

The first standoff 122 has a closed loop shape when viewed in plan. That is, the first standoff 122 surrounds the first lens unit 110. Likewise, the first connection part 121 also surrounds the first lens part 110.

The first lens unit 110, the first connection unit 121, and the first standoff 122 may be integrally formed.

The second lens unit 200 is disposed below the first lens unit 100. The second lens unit 200 is fastened to the first lens unit 100. The second lens unit 200 is transparent and made of a photo-curable resin. The second lens unit 200 includes a second lens unit 210 and a second support unit 220.

The second lens unit 210 has a curved surface having a predetermined curvature. More specifically, the second lens unit 210 has a convex surface and a concave surface opposite to each other. The second lens unit 210 refracts incident light. The second lens unit 210 has a diameter of about 0.5 to 3 mm.

The second support part 220 extends laterally from the second lens part 210. The second support part 220 supports the second lens part 210.

The second support part 220 includes a second connection part 221 connected to the second lens part 210 and a second standoff 222 connected to the second connection part 221 and extending downward, .

The second connection portion 221 and the second standoff 222 are formed in a stepped manner and the lower surface of the second connection portion 221 is disposed at a position higher than the lower surface of the second standoff 222 .

The second standoff 222 has a closed loop shape when viewed in plan. That is, the second standoff 222 surrounds the second lens unit 210. Likewise, the second connection portion 221 also surrounds the second lens portion 210.

The second lens unit 210, the second connection unit 221, and the second standoff unit 222 may be integrally formed.

The third lens unit 300 is disposed below the second lens unit 200. The third lens unit 300 is fastened to the second lens unit 200. The third lens unit 300 is transparent and made of a photo-curable resin. The third lens unit 300 includes a third lens unit 310 and a third support unit 320.

The third lens unit 310 has a curved surface having a predetermined curvature. More specifically, the third lens portion 310 has a convex surface and a concave surface opposite to each other. The third lens unit 310 refracts incident light. The third lens unit 310 has a width of about 0.5 to 3 mm.

The third support part 320 extends laterally from the third lens part 310. The third support part 320 supports the third lens part 310. The third lens unit 310 and the third support unit 320 may be integrally formed.

The first lens unit 110, the second lens unit 210, and the third lens unit 310 have different curvatures.

The distance between the first lens unit 110 and the second lens unit 210 may be adjusted by the first standoff 122. The distance between the second lens unit 210 and the third lens unit 310 may be adjusted by the second standoff 222. [

The first light blocking layer 410 is disposed on at least one surface of the first lens unit 100. More specifically, the first light-shielding layer 410 is disposed on the first lens unit 100. The first light blocking layer 410 is disposed on the upper surface of the first lens unit 100. More specifically, the first light shielding layer 410 is disposed on the upper surface of the first support portion 120. The first light blocking layer 410 may be disposed on a part of the curved surface of the first lens unit 110. More specifically, the first light-shielding layer 410 may be coated on the entire upper surface of the first support part 120 and a part of the curved surface of the first lens part 110.

The first light blocking layer 410 blocks light. The thickness of the first light blocking layer 410 may be about 1 탆 to about 5 탆. The first light blocking layer 410 may expose a part or all of the first lens unit 110. That is, the first light blocking layer 410 may expose part or all of the upper curved surface of the first lens unit 110. More specifically, the first light-shielding layer 410 may expose a part of the upper curved surface of the first lens unit 110. The first light blocking layer 410 may include an opening corresponding to the curved surface of the first lens unit 110.

The second light blocking layer 420 is disposed on at least one surface of the first lens unit 100. More specifically, the second light shielding layer 420 is disposed under the first lens unit 100. The second light blocking layer 420 is disposed on the lower surface of the first lens unit 100. The second light blocking layer 420 sandwiches the first lens unit 100 together with the first light blocking layer 410. The second light blocking layer 420 is interposed between the first lens unit 100 and the second lens unit 200.

The second light shielding layer 420 is disposed on the lower surface of the first support 120. More specifically, the second light-shielding layer 420 may be disposed on a lower surface and a side surface of the first standoff 122. The second light blocking layer 420 may be disposed on a part of the curved surface of the first lens unit 110. More specifically, the second light-shielding layer 420 may be coated on the entire lower surface of the first support part 120 and a part of the curved surface of the first lens part 110.

The second light shielding layer 420 blocks light. The thickness of the second light shielding layer 420 may be about 1 탆 to about 5 탆. The second light-shielding layer 420 may expose a part or all of the first lens unit 110. That is, the second light-shielding layer 420 may expose part or all of the lower curved surface of the first lens unit 110. More specifically, the second light-shielding layer 420 may expose a part of the lower curved surface of the first lens unit 110. The second light blocking layer 420 may include an opening corresponding to the curved surface of the first lens unit 110.

The third light blocking layer 430 is disposed on at least one surface of the second lens unit 200. More specifically, the third light-shielding layer 430 is disposed on the second lens unit 200. The third light blocking layer 430 is disposed on the upper surface of the second lens unit 200. The third light blocking layer 430 is interposed between the first lens unit 100 and the second lens unit 200. More specifically, the third light shielding layer 430 is disposed on the upper surface of the second support portion 220. The third light blocking layer 430 may be disposed on a part of the curved surface of the second lens unit 210. More specifically, the third light-shielding layer 430 may be coated on the entire upper surface of the second supporting portion 220 and a part of the curved surface of the second lens portion 210.

The third light blocking layer 430 blocks light. The thickness of the third light shielding layer 430 may be about 1 탆 to about 5 탆. The third light-shielding layer 430 may expose part or all of the second lens unit 210. That is, the third light-shielding layer 430 may expose part or all of the upper curved surface of the second lens unit 210. More specifically, the third light-shielding layer 430 may expose a part of the upper curved surface of the second lens unit 210. The third light blocking layer 430 may include an opening corresponding to a curved surface of the second lens unit 210.

The fourth light blocking layer 440 is disposed on at least one surface of the second lens unit 200. More specifically, the fourth light-shielding layer 440 is disposed below the second lens unit 200. The fourth light-shielding layer 440 is disposed on the lower surface of the second lens unit 200. The fourth light blocking layer 440 sandwiches the second lens unit 200 together with the third light blocking layer 430. The fourth light blocking layer 440 is interposed between the second lens unit 200 and the third lens unit 300.

The fourth light-shielding layer 440 is disposed on the lower surface of the second support portion 220. More specifically, the fourth light-shielding layer 440 may be disposed on a lower surface and a side surface of the second standoff 222. The fourth light blocking layer 440 may be disposed on a part of the curved surface of the second lens unit 210. More specifically, the fourth light-shielding layer 440 may be coated on the entire lower surface of the second supporting portion 220 and a part of the curved surface of the second lens portion 210.

The fourth light blocking layer 440 blocks light. The thickness of the fourth light-shielding layer 440 may be about 1 탆 to about 5 탆. The fourth light blocking layer 440 may expose a part or all of the second lens unit 210. That is, the fourth light-shielding layer 440 may expose part or all of the lower curved surface of the second lens unit 210. More specifically, the fourth light-shielding layer 440 may expose a part of the lower curved surface of the second lens unit 210. The fourth light blocking layer 440 may include an opening corresponding to a curved surface of the second lens unit 210.

The fifth light blocking layer 450 is disposed on at least one surface of the third lens unit 300. More specifically, the fifth light-shielding layer 450 is disposed on the third lens unit 300. The fifth light blocking layer 450 is disposed on the upper surface of the third lens unit 300. The fifth light blocking layer 450 is interposed between the second lens unit 200 and the third lens unit 300. More specifically, the fifth light-shielding layer 450 is disposed on the upper surface of the third support portion 320. The fifth light blocking layer 450 may be disposed on a part of the curved surface of the third lens unit 310. More specifically, the fifth light-shielding layer 450 may be coated on the entire upper surface of the third support portion 320 and a part of the curved surface of the third lens portion 310.

The fifth light blocking layer 450 blocks light. The thickness of the fifth light-shielding layer 450 may be about 1 탆 to about 5 탆. The fifth light-shielding layer 450 may expose a part or all of the third lens unit 310. That is, the fifth light-shielding layer 450 may expose part or all of the upper curved surface of the third lens unit 310. More specifically, the fifth light-shielding layer 450 may expose a part of the upper curved surface of the third lens unit 310. [ The fifth light blocking layer 450 may include an opening corresponding to the curved surface of the third lens unit 310.

The sixth light blocking layer 460 is disposed on at least one surface of the third lens unit 300. More specifically, the sixth light-shielding layer 460 is disposed under the third lens unit 300. The sixth light blocking layer 460 is disposed on the lower surface of the third lens unit 300. The sixth light blocking layer 460 sandwiches the third lens unit 300 together with the fifth light blocking layer 450.

The sixth light blocking layer 460 is disposed on the lower surface of the third supporting part 320. More specifically, the sixth light-shielding layer 460 may be disposed on a lower surface and a side surface of the third standoff 322. The sixth light blocking layer 460 may be disposed on a part of the curved surface of the third lens unit 310. More specifically, the sixth light-shielding layer 460 may be coated on the entire lower surface of the third support portion 320 and on a part of the curved surface of the third lens portion 310.

The sixth light blocking layer 460 blocks light. The thickness of the sixth light shielding layer 460 may be about 1 [mu] m to about 5 [mu] m. The sixth light blocking layer 460 may expose part or all of the third lens unit 310. That is, the sixth light-shielding layer 460 may expose part or all of the lower curved surface of the third lens unit 310. More specifically, the sixth light-shielding layer 460 may expose a part of the lower curved surface of the third lens unit 310. The sixth light blocking layer 460 may include an opening corresponding to a curved surface of the third lens unit 310.

Each of the first to sixth light shielding layers 410, 420, ..., 460 includes a photoresist. The first to sixth light shielding layers 410, 420, ..., 460 may be formed by a photolithography process. Further, the photoresist used for the first to sixth light shielding layers 410, 420, ..., 460 may include a photosensitizer. The photosensitizer absorbs light and moves to the excited state by energy, thereby promoting the reaction. With the photosensitizer, the photosensitizer is selected from the group consisting of anthracene or derivatives thereof, naphthalene or derivatives thereof, and combinations of the materials. For example, typically the photosensitizer is anthracene; 9-phenoxymethylanthracene; 1,4-dimethoxyanthracene; 9-anthracene methanol; 9,10-dimethyl anthracene; naphthalene; And 2-hydroxyl-1, 4-naphthaquinone.

In addition, the photoresist used for the first to sixth light-shielding layers 410, 420, ... 460 includes a base resin. Examples of the base resin include a phenol resin, a novolac resin, a rubber-based resin, and the like. Further, polyhydroxystyrene or a copolymer thereof may be used as the base resin.

In addition, the photoresist may further comprise a photochemical amplification compound. The photochemically amplifying compound may be selected from the group consisting of an onium salt metal halogenated compound, triflic acid and derivatives thereof, tosylate and various derivatives thereof, and mesylate and various derivatives thereof, It may be one of those known. An example of the photochemically amplifying compound is an aryl sulfonium salt.

In addition, the first to sixth light shielding layers 410, 420, ..., 460 block light. The first to sixth light shielding layers 410, 420, ..., 460 are colored. More specifically, the first to sixth light shielding layers 410, 420, ..., 460 may have a black color. The first to sixth light shielding layers 410, 420, ..., 460 include a dye, a pigment, or a plurality of colored particles. In particular, the first to sixth light shielding layers 410, 420, ..., 460 may include black dyes or black pigments.

The first light shielding layer 410 and the second light shielding layer 420 may not be disposed only on the first supporting portion 120 and may be coated on part of the curved surface of the first lens portion 110 as described above . In particular, the first light blocking layer 410 and the second light blocking layer 420 may be formed to a desired position of the first lens unit 110 by a photolithography process. Accordingly, the first lens unit 110 and the first support unit 120 are not limited to the positions of the first light shielding layer 410 and the second light shielding layer 420, have.

In this embodiment, the first lens unit 110 and the first support unit 120 are formed in a desired shape, and a region through which light should be transmitted is formed by a photolithography process, May be defined in the first lens unit 110 by the second light-shielding layer 420. Accordingly, the camera module according to the present embodiment can freely implement the shapes of the first lens unit 110 and the first support unit 120. That is, the camera module according to the present embodiment can have a high degree of design freedom.

Similarly, the second lens unit 210, the second support unit 220, the third lens unit 310, and the fourth lens unit may be freely formed in a desired shape.

The lens guide 20 has a rectangular frame shape and guides the lens assembly 10. The lens guide 20 receives the lens assembly 10 and supports the lens assembly 10.

The lens guide 20 includes a first guide 21 for guiding the side surface of the lens assembly 10 and a second guide 22 for supporting the lower surface of the lens assembly 10. Examples of the material used for the lens guide 20 include plastic.

The IR filter 30 is disposed below the lens guide 20. The IR filter 30 may be formed by coating a glass substrate with a material for filtering infrared rays. Examples of the infrared filter 30 ring material include the like.

The IR filter 30 filters the light passing therethrough and blocks the infrared rays. The IR filter 30 is adhered to the lens guide 20 and attached to the sensing chip 40 by the micro spacer 50.

The sensing chip 40 is disposed under the IR filter 30. The sensing chip 40 is made of silicon and includes a plurality of image sensors. The sensing chip 40 senses light incident through the lens assembly 10 and converts the sensed light into an electrical signal.

The micro-spacer 50 is interposed between the sensing chip 40 and the IR filter 30. The micro-spacer 50 is bonded to the IR filter 30 and the sensing chip 40. In addition, the micro spacer 50 adjusts the spacing between the sensing chip 40 and the IR filter 30.

The shielding cover 60 covers the lens assembly 10, the lens guide 20, the IR filter 30, the sensing chip 40, and the micro spacer 50. The shielding cover 60 receives the lens assembly 10, the lens guide 20, the IR filter 30, the sensing chip 40, and the micro-spacer 50.

The light shielding cover 60 includes a through hole 61 through which light is input from the outside. The light shielding cover (60) shields light input to the area other than the through hole (61). Examples of the material used as the light-shielding cover 60 include metals and the like.

In addition, the camera module according to the embodiment may further include a substrate connected to the sensing chip 40.

As described above, the first to sixth light shielding layers 410, 420, ..., 460 include photoresist. That is, the first to sixth light shielding layers 410, 420, ..., 460 may be formed by a photolithography process. Accordingly, the first to sixth light blocking layers 410, 420, ..., 460 can be aligned with the first to third lens units 300 with high precision. That is, the opening portions of the first to third lens portions 310 and the first to sixth light shielding layers 410, 420, ... 460 may be aligned at the correct positions.

Accordingly, the camera module according to the embodiment has improved optical characteristics and can be easily manufactured.

FIGS. 3 to 8 are views showing a process of manufacturing the camera module according to the embodiment. In the description of the present manufacturing method, the description of the above-described camera module will be referred to. That is, the description of the prior art camera module can be essentially combined with the description of the present manufacturing method.

3, first, a first lens array substrate 101, a second lens array substrate 201, and a third lens array substrate 301 are provided.

The first lens array substrate 101 includes a plurality of first lens units 110. The second lens array substrate 201 includes a plurality of second lens units 210. The third lens array substrate 301 includes a plurality of third lens units 310.

The first lens array substrate 101, the second lens array substrate 201, and the third lens array substrate 301 may be formed by an injection process.

Referring to FIG. 4, a first photoresist layer 411 and a second photoresist layer 421 are formed on the upper and lower surfaces of the first lens array substrate 101, respectively. A third photoresist layer 431 and a fourth photoresist layer 441 are formed on the upper and lower surfaces of the second lens array substrate 201, respectively. A fifth photoresist layer 451 and a sixth photoresist layer 461 are formed on the top and bottom surfaces of the third lens array substrate 301, respectively.

The process of forming the first photoresist layer 411 will be described in more detail with reference to FIG.

First, a photoresist composition is coated on the upper surface of the first lens array substrate 101. The photoresist composition may be coated by a coating process such as spin coating, slot coating, or spray coating (S10).

The photoresist composition may comprise a base resin, a photosensitizer, a photochemically amplifying compound and a solvent.

The solvent may be selected from materials such as propylene glycol monomethyl ether acetate (PMA, PGMEA), ethoxyethyl propionate, ethyl cellosolve acetate, diglyme and combinations thereof.

Thereafter, the solvent is removed by evaporation, and the first photoresist layer 411 is formed.

Thereafter, the first photoresist layer 411 is selectively irradiated with light (S20). At this time, when the photoresist composition is a positive type, light is irradiated to regions corresponding to the first lens units 110, respectively. Alternatively, when the photoresist composition is of a negative type, light is irradiated to a region around the first lens portions 110.

Thereafter, the first photoresist layer 411 is etched, and openings are formed in regions corresponding to the first lens portions 110, respectively. More specifically, the first photoresist layer 411 may expose a part of the curved surface of the first lens units 110 by the etching process.

The second to sixth photoresist layers 421, 431 ... 461 may also be formed and etched as described above.

Referring to FIG. 6, the lens array substrates 101, 201, and 301 are coupled to each other. More specifically, the lens array substrates 101, 201, and 301 may be adhered to each other.

Referring to FIG. 6, the combined lens array substrates 101, 201, and 301 are cut, and a first lens unit 100, a second lens unit 200, and a third lens unit 300, The lens assembly 10 is formed.

The first lens unit 100, the second lens unit 200, the third lens unit 300, and the first through sixth lens units 100, 201, and 301 are cut at a time, The light shielding layers 410, 420 ... 460 include cut surfaces that are arranged in the same plane.

7, the lens assembly 10 is received in the lens guide 20, and the lens guide 20 is bonded to the IR filter 30. Further, the IR filter 30 is bonded to the sensing chip 40 by the micro-spacer 50.

Thereafter, the lens guide 20, the IR filter 30, the sensing chip 40 and the micro spacer 50 are covered with the light shielding cover 60, thereby manufacturing the camera module according to the embodiment.

In the method of manufacturing a camera module according to the embodiment, the lens array substrates 101, 201, and 301 can be cut at a time to manufacture the lens assemblies 10 in a large amount.

Since the first to sixth light shielding layers 410, 420, ..., 460 are formed by the photolithography process, the first to the third lens array substrates 101, 201, . Accordingly, the camera module according to the embodiment can have improved optical characteristics.

In addition, the features, structures, effects and the like described in the embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects and the like illustrated in the embodiments can be combined and modified by other persons skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (13)

A first lens portion including a convex curved surface and a concave curved surface opposed to each other, a connecting portion extending laterally of the first lens portion to surround the first lens portion, and a standoff extending downward from the connecting portion to form a step with the connecting portion A first lens unit including a first support unit including a first lens unit;
A light shielding layer disposed on an upper surface, a lower surface of the first support portion, and a part of a curved surface of the first lens portion; And
And a second lens unit disposed at a lower portion of the first lens unit and including a second lens unit and a second support unit having different curvatures from the first lens unit. The lens assembly according to claim 1, wherein the light-shielding layer is colored. The lens assembly according to claim 1, wherein the light-shielding layer comprises a photosensitive agent, and the light-shielding layer comprises a phenol resin, a rubber resin or a novolac resin. delete The lens assembly according to claim 1, wherein the light shielding layer comprises a dye, a pigment, or a plurality of colored particles. delete delete delete The method according to any one of claims 1 to 3 and 5,
Wherein the first lens unit and the second lens unit have a diameter of 0.5 mm to 3 mm, and the thickness of the light shielding layer is 1 m to 5 m. delete delete delete delete

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