DE102016010040A1 - Camera module and associated manufacturing process - Google Patents

Abstract

In order to align an optical diaphragm (21) within a camera module (1) passively, ie without actively moving it, onto a lens body (3) of the camera module (1) and thus simplify the production of the camera module, it is proposed to mount it on the lens body (3). a cross-sectional constriction (8) to be provided, wherein an opaque element (9) on a cross-sectional constriction (8) forming side surface (10) of the lens body (3) is applied, so that the opaque element (9) automatically on the lens body (3) aligned Aperture (11) forms.

Description

The invention relates to a camera module having an image sensor and at least one lens body and an associated method for manufacturing such a camera module.

Such camera modules are known and are used for example in endoscopes but also other miniaturized optical devices, in particular to allow video recordings.

For a high quality of the imaging process, it is often necessary to form an optical shutter or other beam limitation in the camera module. An optical stop can generally be understood to mean a device which delimits a light bundle incident in an optical system, with rays within an aperture passing through the stop while being completely blocked or at least attenuated outside the aperture by one or more shadowing elements.

In particular, an entrance pupil and thus a light flux introduced into an optical system can be controlled by means of an optical diaphragm, and the influence of interfering and stray light can be limited.

To provide optical apertures in camera modules, it is common practice to align appropriate light shading elements on the lens body or bodies to achieve the desired imaging performance. The alignment of the elements forming the optical stop must be very accurate both along the optical axis of the lens body and perpendicular to this axis, usually even accompanied by a measurement of the imaging properties, which is also known as active alignment. However, an active alignment makes the production of camera modules very expensive and therefore expensive.

The invention has for its object to provide a camera module, which has an optical aperture and which can be easily and inexpensively finished. Another object is to simplify common manufacturing methods of camera modules, in particular with regard to the production of an optical shutter. The simplification has the main aim of reducing the production costs of the camera module to the extent that it can be used as a disposable item, in particular for medical applications.

To achieve this object, the features of claim 1 are provided according to the invention in a camera module. In particular, it is thus proposed according to the invention for achieving the object in a camera module of the type mentioned that the at least one lens body has a first region facing the image sensor and a second region directly adjoining the same, wherein a cross-sectional constriction is formed between the first region and the second region and wherein in the region of the cross-sectional constriction, an opaque element is applied to a side surface of the lens body, so that the opaque element forms an aperture.

The opaque element thus fulfills the function of an optical aperture. By providing a cross-sectional constriction on the at least one lens body is achieved that an outer contour of the cross-sectional constriction aligns a position of the opaque element and thus a position of the aperture relative to an optical axis of the lens body; Thus, the aperture is passively aligned with respect to the optical axis of the lens body. The advantage here is that in a camera module according to the invention, a diaphragm without complex active alignment of shading elements can be realized and / or that the aperture can form an aperture diaphragm for defining an entrance pupil of the camera module or a field diaphragm for defining a field of view of the camera module.

According to the invention, the opaque element does not have to cover the entire side surface of the lens body, for instance up to an inner wall of a housing, but only partially. For a necessary complete input-side shading can be achieved according to the invention by additional apertures. For example, on one side surface of the lens body, preferably on the inside on the second region, an additional diaphragm, in particular in the form of a vapor-deposited and structured chromium layer, may be formed. This additional aperture can overlap with the opaque element and thus prevent light from entering the edges of the camera module. It is preferred if the additional aperture has an opening which is larger than the aperture formed by the opaque element. As a result, the opaque element can continue to determine the position of the aperture by passive alignment on the lens body. Another advantage is that the outer edge of the opaque element can remain indefinite, as long as sufficient coverage with the additional diaphragm is given.

Under an opaque element, according to the invention, a layer or a volume of a material can be understood, which is impermeable to optical wavelengths, which for example contribute to the image on the image sensor or has a high optical attenuation for these wavelengths. The opaque element can thus be formed in particular by a liquid that does not necessarily have to be cured.

It is particularly advantageous if the cross-sectional constriction is formed by an all-round constriction so as to form an all-round diaphragm. In particular, when using a rotationally symmetrical lens body so a circular aperture can be obtained, which is preferred for many applications.

According to the invention, the camera module can also have a plurality of lens bodies which have individual or else a plurality of cross-sectional constrictions according to the invention, so that in particular a plurality of apertures can be formed thereby. For this purpose, it may in particular be provided that a single lens body has a plurality of cross-sectional constrictions spaced apart from one another. As a result, a plurality of apertures staggered in the direction of the optical axis can be realized. Such a configuration may be advantageous for the effective limitation of stray light, in particular when the individual apertures are formed with different diameters. It is further understood that to improve the optical properties of the camera module may have other optical elements such as diffractive elements, protective glasses, optical filters, mirrors, prisms or the like.

According to the invention, the object can also be achieved by further advantageous embodiments of the subclaims.

According to the invention, the camera module can have a housing. This housing may be connected to the lens body and / or be produced, for example, by casting or molding process, by injection molding, or by means of a Mikrogalvanik. According to the invention, the lens body may in particular be inserted into the housing such that the cross-sectional constriction is formed within the housing. The housing may also serve to receive and align optical components, such as the image sensor, with the lens body. In particular, the housing can position the image sensor in a focal plane of the lens body.

Furthermore, the camera module according to the invention may have a, preferably closed, interior. In this case, in particular, the housing limit the interior. Furthermore, a receiving space for a liquid can be formed in the interior. Here, the receiving space may be separated from adjacent areas of the interior, for example by means of a lens body or a wall of the housing. According to the invention, the interior can also be limited by further elements, such as the image sensor or an image sensor assembly, for example consisting of an image sensor and a board connected thereto. Furthermore, according to the invention, the sensor and / or the first region of the lens body protrude into the interior space and / or the second region of the lens body delimits the interior space.

In a further advantageous embodiment it can be provided that the first region of the lens body is designed as a first part body and the second region of the lens body is designed as a second part body. In this case, in particular, the first partial body may be materially connected to the second partial body. Under a cohesive connection can be understood here a compound in which two connection partners are held together by atomic or molecular forces such that a non-destructive solution of the compound is not possible. According to the invention, the second partial body is preferably designed as an optical substrate and / or manufactured from an optical substrate, for example by a sawing process.

As an alternative to a two-part design of the lens body, it can be provided that the at least one lens body is monolithic, that is to say made of a single piece of material. In particular, methods such as casting, embossing, thermo-compression or else lithography, in particular gray-tone and stereolithography, can be used for a monolithic production of the lens body.

Both in monolithic and in two-part design of the lens body, the first region may be formed in the form of a, preferably rotationally symmetric, cone. It is preferred if the cone tapers in the direction of the second region. This embodiment of the lens body has the advantage that the cross-sectional constriction can be formed in particular at the transition to the second region. Thus, scattered light can be optimally suppressed and the optical aperture can form an edge on the input side, which limits the aperture sharply.

A further, particularly advantageous embodiment of the invention provides that the opaque element is formed by an opaque liquid. In this case, the opaque liquid can be curable in particular by means of UV radiation and / or by means of heat. The advantage here is that the liquid can be very flexible brought to the cross-sectional constriction to be fixed in this position by curing. Further, by dispersed in the liquid pigments or dissolved dyes, the transmission of light through the opaque element be targeted. For example, the opaque element can also assume the function of a spectral filter.

In order to facilitate the passive alignment of the opaque element to the lens body, it is advantageous if, in the region of the cross-sectional constriction, a side surface of the first region with an adjoining side surface of the second region an angle of less than 90 °, preferably less than 80 °, more preferably less than 70 °, in particular less than 60 °. It is preferred if this acute angle extends around the entire cross-sectional constriction. By employing suitable hydrophilic materials such as glass for the lens body, preferably in conjunction with plasma activation of the surface of the lens body, strong surface forces occur at the acute angle which direct the liquid along the cross-sectional constriction. Thus, it is particularly avoidable that arise when applying the liquid to the lens body gaps, for example, by air bubble formation. Because such gaps would severely affect the optical functionality of the aperture formed. As a result, in particular an excellent centering of the aperture with respect to the optical axis of the lens body can be achieved.

According to the invention it can also be provided that the housing has at least one opening through which the interior of the camera module is accessible from the outside. The advantage here is that an opaque liquid can be directed into the interior of the camera module. Thus, the liquid can flow along the lens body to the cross-sectional constriction to define there the aperture. The breakthrough in the housing can be configured as a filling or be connected, for example, with a feed.

According to the invention, the aperture can be made so small that the liquid transport through the aperture and to the cross-sectional constriction can be mediated by capillary forces, ie in particular without exerting a delivery pressure on the liquid from the outside. On the finished camera module, the opening can be closed over but open, for example, to allow ventilation or ventilation of the interior.

A further embodiment of the camera module provides that the opaque element is formed as a, preferably thin, applied to a side surface of the lens body coating. In this case, the coating can be applied to a side surface of the first region and / or to a side surface of the second region.

According to the invention, it can also be provided that a diameter of an optical aperture formed by the opaque element increases in the direction of the image sensor and / or that the opaque element surrounds the first area in an annular manner.

In other words, the opaque element may be in the form of a closed ring which completely encloses the at least one lens body, preferably in the region of the transition to the second region. Such embodiments can be very easily realized by appropriate adjustments of the cross-sectional constriction, wherein the cross-sectional constriction forming side surfaces of the lens body predetermine the shape of the optical aperture and thus the aperture. The advantage here is that the optical aperture can thus be optimized in shape both perpendicular to the optical axis and along the optical axis with respect to the imaging properties of the camera module.

Furthermore, it can be provided according to the invention that the diaphragm opening is formed in an interface plane between the first area and the second area. Here, the aperture can be described as a cross section of the optical aperture with minimum diameter and / or minimum cross-sectional area. It is understood that the aperture can be not only circular but also elliptical or polygonal, in particular rectangular, depending on the shape of the cross-sectional constriction.

According to the invention, it is preferable for the opaque element to extend from a side surface of the first region to a side surface of the second region. By this embodiment, a particularly good input side shading against stray light can be achieved.

A development according to the invention provides that at least one optical interface is formed with optical power between the first region and the second region. For this purpose, the first region may have a different refractive index from the second region. However, it can also be provided that an air space is formed between the first and the second region and thus two interfaces are formed with optical power between the first region and the second region, wherein the first region continue to be at least partially cohesively connected to the second region can. Thus, a refractive power can be generated in particular when the first region and the second region have the same refractive index. According to the invention, in this case the at least one optical interface may in particular have a convex and / or concave and / or spherical and / or aspherical shape.

A further development of the camera module according to the invention provides that the at least one lens body is a first lens body and the camera module next to it also has a second lens body. In this case, an alignment element may be provided on the first lens body and / or on the housing, which aligns the second lens body with respect to the first lens body and / or with respect to the image sensor. Furthermore, the two lens bodies may have a common or separate beam path. By providing a plurality of lens bodies, the imaging properties of the camera module can be decisively improved and / or a plurality of optical channels can be formed.

To achieve the above object, the features of the independent method claim are provided according to the invention. In particular, it is thus proposed according to the invention to achieve the object in a method of the type described above, that in a first step at least one lens body is formed with a cross-sectional constriction between a first region and a second region of the at least one lens body and that in a subsequent step, an opaque Element is applied to a side surface of the lens body. The opaque element is preferably applied after connecting the at least one lens body to a housing of the camera module. In this case, the opaque element can be applied to a side surface of the first region and / or to a side surface of the second region. An advantage of this method is that a diaphragm or an aperture can be realized in the camera module, which is passively aligned on the at least one lens body, so that the production is substantially simplified. Conventional methods such as injection molding, casting, hot stamping, injection compression, nanoimprinting, stereolithography, or lens molding of soft silicone punches can be used for the production of the at least one lens body. The lens body may consist in particular of glass or polymer, in particular of a polymer curable by means of crosslinking reactions.

It is particularly favorable if an inventive camera module, in particular as described above or according to one of the claims directed to a camera module, is used in the method according to the invention.

A development of the method according to the invention provides that the opaque element is applied to the lens body as an opaque, preferably curable, liquid and / or as a, preferably thin, coating. Thus, two possibilities for the opaque element are named, whereby these possibilities can also be used in combination in a camera module. Alternatively or additionally, it may be provided that the opaque element is applied to the first region and the second region in each case in regions. In this case, the opaque element may extend from a side surface of the first region to a side surface of the second region, resulting in a coherent opaque element. According to the invention, typical application methods for the attachment of the opaque element are PVD (physical vapor deposition) CVD (chemical vapor deposition) or PECVD (plasma-enhanced chemical vapor deposition) methods or, for example, dip-coating.

When using an opaque liquid, it is advantageous if the opaque liquid is introduced into the interior before closing an interior of the camera module. For example, the liquid can be introduced through a receptacle into the interior, which accommodates a sensor module of the camera module. It is advantageous in these methods that a larger access opening can be provided to a liquid receiving receiving space, so that the liquid can be introduced, for example by dispensing from a tube or a cannula or by shooting (comparable to "ink jetting") in the interior ,

Supporting or alternatively it can be provided according to the invention that the opaque liquid is brought by surface forces to the cross-sectional constriction in order to form an optical aperture there. In this case, surface forces can, in particular, be understood as meaning those forces which act between surfaces of the camera module, in particular surfaces of the housing or of the lens body, and of the liquid. In this case, it is particularly advantageous if the opaque liquid forms a freely movable interface to a gas phase in an interior of the camera module during the introduction. In this case, the liquid in the interior can easily spread, in particular supported by surface forces. For this purpose, the opaque liquid can be introduced into an interior of the camera module, in particular by means of a receptacle or through an aperture formed on a housing of the camera module.

With regard to the production of several camera modules, it may be advantageous for several Camera modules are produced in parallel on a common optical substrate, in particular on a wafer. By way of example, the housings and further components of the camera modules, for example the respective first regions of the lens bodies, can be constructed on conventional round glass wafers. It is particularly advantageous if the camera modules are arranged in arrays, so that they can be separated by means of wafer saws. After separation, the image sensors or the image sensor modules can be inserted into the respective camera modules. The advantage here is that the respective second regions of the lens body of the individual camera modules can be manufactured from a common optical substrate, which enables efficient production at low unit costs. A further advantage is that the first regions of the lens body can be produced on the wafer by means of parallel processes, such as, for example, lithography. It goes without saying that serial process steps, for example a serial filling of the individual camera modules with an opaque liquid, can additionally be provided here. In particular, it can therefore be provided that the camera modules are manufactured using technologies of microsystem technology such as layer deposition, lithography, dry and wet chemical etching methods, injection molding, soft-mold-vacuum injection molding, wafer sawing, etc.

The invention will now be described in more detail with reference to embodiments, but is not limited to these embodiments. Further exemplary embodiments result from the combination of the features of individual or several protection claims with one another and / or with one or more features of the respective exemplary embodiment. In particular, embodiments of the invention can thus be obtained from the following description of a preferred embodiment in conjunction with the general description, the claims and the drawings.

It shows:

1 a cross section through an inventive composite camera module,

2 an illustration of dispensing an opaque liquid into the camera module,

3 3 shows a cross section through a camera module, which is not yet completely assembled, with a monolithically designed lens body,

4 a cross section through an inventive camera module formed in the housing breakthroughs,

5 a perspective view of a lens body according to the invention with a formed by means of a coating opaque element,

6 a cross section through a lens body according to the invention, which has an opaque coating on a side surface,

7 a cross section through an inventive camera module with a plurality of lens bodies,

8th 3 shows a cross section through a camera module according to the invention, with a second region of the lens body designed as a planar optical substrate,

9 a cross section through a camera module according to the invention with a concave optical interface between a first and a second region of the lens body,

10 a cross section through a camera module according to the invention in which a first region of the lens body is inserted positively in a second region,

11 a cross section through an inventive camera module with a monolithically designed lens body,

12 a cross-section through an inventive camera module with a convex optical interface between a first and a second region of the lens body.

1 shows in a highly simplified schematic cross-sectional representation to explain the inventive principle in whole 1 designated camera module. This has a lens body 3 and an image sensor assembly consisting of a circuit board 29 and an image sensor applied thereto 2 on. The camera module detects and positions the image sensor group 1 a housing 5 with a recording 27 on, so the image sensor 2 in a focal plane 23 of the lens body 3 to come to rest.

In 1 consists of the lens body 3 from a first area 6 , which is formed as a first part body in the form of a plano-convex lens, and from a second area 7 made of an optical substrate as a second part body, formed in the form of a Planglases and by means of a corresponding receptacle with the housing 5 connected is. Through the second area 7 entering Light is thus passing through the first area 6 on the image sensor 2 focused. The two areas 6 . 7 of the lens body 3 are cohesively connected by a thin adhesive layer, so that the second area 7 directly to the first area 6 borders. As indicated by the hatching, the two areas 6 . 7 made of two different optical materials.

Between the first area 6 and the second area 7 is one with 8th designated cross-sectional constriction formed. At the in 1 shown embodiment, this is achieved in that the first area 6 is formed in the form of a rotationally symmetrical cone or truncated cone, extending in the direction of the second region 7 tapered and with its flat surface on the second area 7 seated. Thus, the plane in which the cross-sectional constriction has an area with the smallest diameter or with the smallest cross-sectional area, just with the interface plane between the first 6 and the second area 7 together.

In 1 gets through the second area 7 of the lens body 3 , the case 5 as well as the sensor module made of printed circuit board 29 and image sensor 2 an interior 13 formed, which is completed in the embodiment shown in all directions. image sensor 2 and the first area 6 of the lens body 3 protrude into this interior 13 , Also the cross-sectional constriction 8th is inside the case 5 in the interior 13 educated.

To get an optical aperture in the camera module 1 To get one is through the inner wall of the housing 5 as well as through the lens body 3 limited reception space 28 inside the interior 13 filled with an opaque liquid. When casting the liquid, this is on a side surface 10 of the second area 7 to the cross-sectional constriction 8th and thus up to a side surface 10 of the first area 6 flowed and then has the first area 6 surrounded by a ring. This process thus became an opaque element 9 formed by an opaque liquid 14 on a side surface of the lens body 3 applied; in the 1 shown example both on the side surface 10 of the first area 6 as well as on the side surface 10 of the second area 7 , This forms the opaque element 9 an optical aperture 21 ,

In this process, it is particularly advantageous that the opaque element 9 and thus the optical aperture 21 automatically on the lens body 3 aligns, so a complex active alignment of the optical aperture 21 can be omitted. As a result, at the in 1 example shown the opaque element 9 the first area 6 annular, wherein the diameter of the funnel-shaped optical aperture 21 continuously in the direction of the image sensor 21 increased. The through the minimum aperture of the optical aperture 21 defined circular aperture 11 thus comes in the interface plane 12 between the first 6 and the second area 7 to lie.

As 2 shows, there is a possibility for applying the opaque element 9 therein, a, preferably precisely determined, volume of an opaque liquid 14 through the recording 27 in the interior 13 of the camera module 1 to dispense. Thus, here is the liquid before closing the interior 13 of the camera module 1 in the interior 13 brought in. Due to the force of gravity alone, as well as the support of surface forces, the opaque liquid can form 14 to the cross-sectional constriction 8th spread. In this flow process, the opaque liquid 14 leads to the cross-sectional constriction, this has an in 2 With 4 referred to freely movable interface. At the in 2 shown example, this freely movable interface 4 both during filling and in the finished camera module 1 in contact with a gas phase in the interior 13 ,

Illustrated by the three S-shaped arrows 3 like one in the interior 13 introduced opaque liquid 14 by radiation 30 can be cured, where, as in 3 visible, the radiation 30 in particular by a recording of the housing 5 can be introduced. The advantage here is that the relative position of the opaque element 9 to the lens body 3 can be fixed. This leaves the optical aperture 21 and in particular the aperture 11 within the camera module 1 stationary, even if the orientation of the camera module 1 in the room changes. Next to it illustrated 3 a monolithic formation of the lens body; first area 6 and second area 7 are made of one piece of material, so no glue layer is needed.

An alternative to that in 2 shown approach of dispensing the liquid shows 4 : Here are on the case 5 two breakthroughs 16 educated. Through the right breakthrough 16 for example, with a feed channel 24 may be connected, the opaque liquid flows 14 in the interior 13 of the camera module 1 and then spreads to the cross-sectional constriction 8th out. The left breakthrough 16 can in this process the ventilation of the interior 13 serve. After completion of the camera module, the breakthroughs 16 either be closed or continue to ventilate the interior 13 serve.

The in 2 highlighted acute angles of less than 90 ° between the side surface 10 of the first area 6 and the side surface 10 of the second area 7 indicates that in the area of the cross-sectional constriction 8th a sharp corner is formed. Due to the rotationally symmetrical shape of the first area 6 this angle or corner runs along the entire cross-sectional constriction 8th So once around the first area 6 around, where in 2 example shown, the value of the angle remains constant. With appropriate choice of the surface properties of the side surfaces 10 This circumferential corner can have strong surface forces on the liquid 14 exercise as soon as this with the corner or the cross-sectional constriction 8th in contact. If the angle lies below a critical angle determined by the surface energies (Concus-Finn criterion), an unstable liquid meniscus is formed, which preferably propagates along the acute corner. By this mechanism, therefore, the opaque liquid 14 around the truncated cone formed first area 6 be routed around so that the resulting aperture 11 no gaps (eg caused by air bubbles) to the first area 6 having.

Another option, the opaque element 9 to apply to the lens body show the 5 and 6 : Here is the opaque element 9 each in the form of a thin coating 15 on side surfaces 10 of the lens body 3 been applied. Here, too, positions the optical aperture 21 automatically, since the side surfaces 10 of the lens body, the position of the opaque element 9 and thus the optical aperture 21 in relation to one through the lens body 3 defined optical axis 22 of the camera module 1 establish. How good in 5 can be seen, the opaque element extends 9 from a side surface 10 of the first area 6 starting from a side surface 10 of the second area 7 ,

The lower plan views of 5 respectively 6 show that the lens body 3 , ie in particular the first area 6 and / or the second area 7 , both a non-round ( 5 ) as well as a rotationally symmetric ( 6 ) Can have shape.

7 illustrates a cross section through a camera module according to the invention 1 with two lens bodies 3 , To the second lens body 20 to the first lens body 19 but also to the image sensor 2 align is on the housing 5 an alignment element configured as a lens frame 18 intended. Alternatively, according to the invention but also a corresponding receptacle on the first lens body 19 be configured so that the second lens body 20 with the first lens body 19 may be connected as a lens stack. In 7 separates the lens barrel together with the second lens body 19 the one for the opaque liquid 14 provided recording room 28 from the rest of the interior 13 from.

The 8th to 12 Finally, show various embodiments of the lens body according to the invention 3 each surrounded by an opaque liquid 14 formed opaque element 9 , 8th first shows the already in 1 presented variant of the cohesive connection of the first area 6 with the second area 7 , where plane surfaces are interconnected. Since an intermediate adhesive layer can be made very thin, its influence on the optical power of the lens body 3 usually negligible. As 10 shows, a similar connection can also be made by a recording, for example, as in 10 represented offset from an interface plane 12 , at the second area 7 be formed so that the first area 6 in the second area 7 wholly or partially can be used positively. The 9 and 12 On the other hand, embodiments show at least one optical interface 17 between the first area 6 and the second area 7 is formed. More precisely, an interface 17 each concave or convex (viewed from the input side) at the second area 7 and a respective corresponding interface 17 at the first area 6 educated. When using materials with different refractive indices for the first area 6 and the second area 7 Thus, it is possible to provide an additional refractive power with which optical aberrations can be reduced. Alternatively, the interfaces 17 However, also non-corresponding, ie different from each other, be formed, in particular an air space between the two areas 6 . 7 can be trained. Finally shows 11 again like 3 a monolithic embodiment of the lens body 3 , at which no optical interface 17 between the first area 6 and the second area 7 is trained.

In order to passively align an optical shutter within a camera module, ie without actively moving it, onto a lens body of the camera module and thus simplify the production of the camera module, it is proposed to provide a cross-sectional constriction on the lens body, an opaque element being applied to a lateral surface of the cross-sectional constriction Lensenkörpers is applied, so that the opaque element automatically forms an aligned on the lens body aperture.

LIST OF REFERENCE NUMBERS

1

camera module

2

image sensor

3

lens body

4

freely movable interface

5

casing

6

first area

7

second area

8th

Querschnittsvrengung

9

opaque element

10

side surface

11

aperture

12

Interface plane

13

inner space

14

opaque liquid

15

coating

16

breakthrough

17

optical interface

18

alignment member

19

first lens body

20

second lens body

21

optical aperture

22

optical axis

23

focal plane

24

feed

25

first part body

26

second part body

27

admission

28

accommodation space

29

circuit board

30

radiation

Claims (17)

Camera module ( 1 ) with an image sensor ( 2 ) and at least one lens body ( 3 ), characterized in that the at least one lens body ( 3 ) a the image sensor ( 2 ) facing the first area ( 6 ) as well as a directly adjacent second area ( 7 ), wherein between the first region ( 6 ) and the second area ( 7 ) a cross-sectional constriction ( 8th ) is formed and wherein in the region of the cross-sectional constriction ( 8th ) an opaque element ( 9 ) on a side surface ( 10 ) of the lens body ( 3 ) is applied so that the opaque element ( 9 ) an aperture ( 11 ). Camera module ( 1 ) according to claim 1, characterized in that the camera module ( 1 ) with the lens body ( 3 ) connected housing ( 5 ) and / or a, preferably closed, interior ( 13 ), in particular wherein the housing ( 5 ) the interior ( 13 ), preferably wherein in the interior ( 13 ) a recording room ( 28 ) is designed for a liquid. Camera module ( 1 ) according to one of the preceding claims, characterized in that the first area ( 6 ) as a first partial body ( 25 ) and the second area ( 7 ) as a second partial body ( 26 ), in particular wherein the first part body ( 25 ) cohesively with the second part body ( 26 ) and / or wherein the second part body ( 26 ) is formed as an optical substrate and / or is made of an optical substrate. Camera module ( 1 ) according to one of the preceding claims, characterized in that the at least one lens body ( 3 ) is monolithic, that is made of a piece of material, and / or that the first area ( 6 ) in the form of a, preferably rotationally symmetric, cone is formed, preferably wherein the cone in the direction of the second region ( 7 ) rejuvenated. Camera module ( 1 ) according to one of the preceding claims, characterized in that the opaque element ( 9 ) by an opaque liquid ( 14 ), in particular wherein the opaque liquid ( 14 ) is curable by means of UV radiation and / or by means of heat. Camera module ( 1 ) according to any one of the preceding claims, characterized in that in the region of the cross-sectional constriction a side surface ( 10 ) of the first area ( 6 ) with an adjacent side surface ( 10 ) of the second area ( 7 ) encloses an angle of less than 90 °, preferably of less than 80 °, more preferably of less than 70 °, in particular less than 60 °, preferably wherein the angle around the entire cross-sectional constriction ( 8th ) runs. Camera module ( 1 ) according to one of the preceding claims, characterized in that the housing ( 5 ) at least one, in particular closed, breakthrough ( 16 ), through which the interior ( 13 ) of the camera module ( 1 ) is accessible from the outside. Camera module ( 1 ) according to one of the preceding claims, characterized in that the opaque element ( 9 ) as one, preferably thin, on a side surface ( 10 ) of the lens body ( 3 ) applied coating ( 15 ) is trained. Camera module ( 1 ) according to any one of the preceding claims, characterized in that a diameter of a through the opaque element ( 9 ) formed optical aperture ( 21 ) in the direction of the image sensor ( 2 ) and / or that the opaque element ( 9 ) the first area ( 6 ) surrounds annularly. Camera module ( 1 ) according to one of the preceding claims, characterized in that the aperture ( 11 ) in an interface plane ( 12 ) between the first area ( 6 ) and the second area ( 7 ) and / or that the opaque element ( 9 ) from a side surface ( 10 ) of first area ( 6 ) starting from a side surface ( 10 ) of the second area ( 7 ). Camera module ( 1 ) according to one of the preceding claims, characterized in that at least one optical interface ( 17 ) with optical power between the first region ( 6 ) and the second area ( 7 ) is trained. Camera module ( 1 ) according to one of the preceding claims, characterized in that the at least one lens body ( 3 ) a first lens body ( 19 ) and at the first lens body ( 19 ) and / or on the housing ( 5 ) an alignment element ( 18 ) is provided, which a second lens body ( 20 ) with respect to the first lens body ( 19 ) and / or with respect to the image sensor ( 2 ). Method for producing a camera module ( 1 ), in particular according to one of claims 1 to 12, with an image sensor ( 2 ) and at least one lens body ( 3 ), characterized in that in a first step at least one lens body ( 3 ) with a cross-sectional constriction ( 8th ) between a first area ( 6 ) and a second area ( 7 ) of the at least one lens body ( 3 ) and that in an ensuing step an opaque element ( 9 ) on a side surface ( 10 ) of the at least one lens body ( 3 ) is applied, preferably after connecting the at least one lens body ( 3 ) with a housing ( 5 ) of the camera module ( 1 ). Method for producing a camera module ( 1 ) according to claim 13, characterized in that the opaque element ( 9 ) as an opaque, preferably curable, liquid ( 14 ) and / or as a, preferably thin, coating ( 15 ) and / or that the opaque element ( 9 ) on the first area ( 6 ) and the second area ( 7 ) is applied in each case in regions, in particular as a coherent opaque element ( 9 ). Method for producing a camera module ( 1 ) according to claim 14, characterized in that the opaque liquid ( 14 ) before closing an interior ( 13 ) of the camera module ( 1 ) in the interior ( 13 ) is introduced, preferably by a receptacle ( 27 ) through which a sensor module of the camera module ( 1 ). Method for producing a camera module ( 1 ) according to claim 14 or 15, characterized in that the opaque liquid ( 14 ) by surface forces on the cross-sectional constriction ( 8th ), in particular wherein the opaque liquid ( 14 ) during the approach, a freely movable interface ( 17 ) to a gas phase in an interior space ( 13 ) of the camera module ( 1 ) and / or wherein the opaque liquid ( 14 ) by a recording ( 27 ) or by a on a housing ( 5 ) of the camera module ( 1 ) breakthrough ( 16 ) in an interior ( 13 ) of the camera module is introduced. Method for producing a camera module ( 1 ) according to one of claims 13 to 16, characterized in that a plurality of camera modules are produced in parallel on a common optical substrate, in particular on a wafer and / or by means of microsystem technology, in particular wherein the respective second regions ( 7 ) are manufactured from the common optical substrate.

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