CN110892703A - Image capturing apparatus - Google Patents

Abstract

The imaging device of the present invention is configured to include: an imaging unit for imaging a subject; a first substrate for mounting the imaging unit; a second substrate for mounting an electronic component electrically connected to the first substrate; and a lens barrel for holding a lens, and the second substrate is arranged to have a predetermined angle with respect to the first base substrate. Thereby, compared with the structure in which the 1st board|substrate and the 2nd board|substrate are arrange|positioned horizontal to the optical axis, it becomes possible to comprise a comparatively small imaging device which shortens the length in the optical axis direction.

Description

camera

technical field

An aspect of the present invention relates to a photographing apparatus and the like.

Background technique

Conventionally, imaging apparatuses in which a lens barrel holding a lens and a substrate on which an imaging element is mounted are housed in a housing have been widely used, but in recent years, there has been an increasing demand for miniaturization of the apparatus. In such an imaging device, the area in the direction perpendicular to the optical axis is reduced due to miniaturization. Therefore, there are cases in which the integration rate of electronic components on the substrate on which the imaging element is mounted is increased, or the substrate on which the imaging element is mounted and the The substrates on which the electronic components are mounted are formed of different substrates. For example, Patent Document 1 discloses an imaging device in which a circuit chip is mounted on the back surface of a surface on which an imaging element is mounted. Patent Document 2 discloses an imaging device including a first substrate on which an imaging element is provided, a second substrate on which electronic components and the like are mounted, and a third substrate.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2011-259101

Patent Document 2: Japanese Patent Laid-Open No. 2011-164461

SUMMARY OF THE INVENTION

The problem to be solved by the invention

However, since the space for mounting in the in-vehicle camera, which has been popularized in recent years, is limited, the demand for miniaturization is further increased than before. In addition, also in imaging apparatuses other than in-vehicle cameras, there is a demand for miniaturization in the same manner. In response to these demands for miniaturization, there are cases in which the structures described in the above-mentioned patent documents cannot adequately respond. In addition, in a small imaging device, it is not easy to assemble small parts, and a structure that is easy to assemble is required.

technical solutions to problems

In order to solve the above-mentioned problems, the present invention adopts the following technical solutions. In addition, in the following description, in order to facilitate understanding of the present invention, reference numerals and the like in the drawings are denoted by parentheses. It is interpreted as a range that can be understood technically by those skilled in the art.

A technical solution of the present invention,

a camera,

have:

a photographing unit (511), for photographing the subject;

a first substrate (51) for mounting the imaging unit;

a second substrate (52) for mounting electronic components electrically connected to the first substrate; and

lens barrel (1) for holding the lens,

The second substrate (52) is arranged to have a predetermined angle with respect to the first base substrate (51).

In the imaging device of the above-described configuration, since the second substrate is arranged at a predetermined angle with respect to the first substrate, it is possible to shorten ( decrease) length in the thickness direction (optical axis direction).

In the above-mentioned photographing device, preferably,

The first substrate (51) is arranged perpendicular to the optical axis,

The second substrate (52) is arranged to have an angle of 45 degrees or less with respect to the optical axis.

According to the imaging device of the above configuration, for example, the overlapping area of the first substrate and the second substrate can be reduced to some extent, so that the connection between the first substrate and the external device can be arranged rearward in the optical axis direction of the first substrate. the structure of the device, etc. That is, it can be set as a structure which improves the degree of freedom of design.

In the above-mentioned photographing device, preferably,

The imaging device further includes a shielding plate (6) formed of metal and arranged to surround the first substrate and the second substrate.

According to the imaging device having the above-described configuration, it is possible to suppress electromagnetic noise and the like from being released to the outside from the first substrate and the second substrate by the shield plate.

In the above-mentioned photographing device, preferably,

The second substrate (52) has protrusions (521a, 521b),

The shielding plate (6) has fitting portions (61a, 61b) that are fitted with the protruding portions.

According to the imaging device of the above-described configuration, it is possible to fix the positions of the second substrate and the shielding plate by fitting the protruding portion and the fitting portion. Thereby, compared with the structure which used the adhesive agent conventionally, it becomes possible to set it as the structure which is easy to assemble and repair after assembling.

In the above-mentioned photographing device, preferably,

The shielding plate has a first biasing portion (62 or 63), and the first biasing portion (62 or 63) biases the second substrate in a predetermined direction.

According to the imaging device having the above-described configuration, the second substrate can be fixed while being biased in a predetermined direction by the first biasing portion, whereby the second substrate can be stably held.

In the above-mentioned photographing device, preferably,

The first biasing portion is a leaf spring formed on the shielding plate.

According to the imaging device of the above-described configuration, it is possible to stably hold the second substrate with a relatively simple configuration.

In the above-mentioned photographing device, preferably,

The shielding plate has a second biasing portion (63 or 62) that biases the second substrate in a direction orthogonal to the predetermined direction.

According to the imaging device of the above-described configuration, the second substrate can be fixed while being urged in two directions, and thereby, the second substrate can be further stably held.

In the above-mentioned photographing device, preferably,

The second biasing portion is a leaf spring (62, 63) formed on the shielding plate.

According to the imaging device having the above-described configuration, it is possible to further stably hold the second substrate with a relatively simple configuration.

In the above-mentioned photographing device, preferably,

The first force applying portion (62 or 63) is electrically connected to the ground potential of the second substrate.

According to the imaging device having the above-described configuration, it is possible to further enhance the shielding effect of the shielding plate against electromagnetic noise. In addition, the ground potential of the first substrate and the second substrate can be strengthened, and the circuit structure can be more resistant to noise.

In the above-mentioned photographing device, preferably,

The first substrate has a connector (512), the connector (512) protrudes rearward in the direction of the optical axis, and is electrically connected to other structures,

The second substrate is arranged so as not to overlap with the connector in a plan view in the optical axis direction.

According to the imaging device of the above-described configuration, the positions of the second substrate and the connector can be configured such that they do not interfere with each other, and it is easy to further reduce the length (thickness) of the imaging device in the optical axis direction.

In addition, another technical solution of the present invention,

a camera,

have:

a photographing unit (511), for photographing the subject;

a first substrate (51) for mounting the imaging unit;

a second substrate (52) for mounting electronic components electrically connected to the first substrate; and

lens barrel (1) for holding the lens,

The first substrate has a connector (512), the connector protrudes rearward in the direction of the optical axis and is electrically connected with other structures,

The second substrate is arranged so as not to overlap with the connector in a plan view in the optical axis direction.

According to the imaging device of the above-described configuration, the positions of the second substrate and the connector can be configured so that they do not interfere with each other, and the length (thickness) of the imaging device in the optical axis direction can be easily reduced.

Another technical solution of the present invention,

a camera,

have:

a photographing unit (511), for photographing the subject;

a first substrate (51) for mounting the imaging unit;

A second substrate (52) is arranged to have a predetermined angle with respect to the first substrate and mounts electronic components electrically connected to the first substrate;

a lens barrel (1) for holding the lens;

a shielding plate (6) formed of metal and arranged to surround the first substrate and the second substrate; and

housings (3, 7) for accommodating the first substrate, the second substrate, the lens barrel, and the shielding plate,

The second substrate has protrusions (521a, 521b),

The shielding plate has a fitting portion (61a, 61b) fitted with the protruding portion,

When the protruding parts (521a, 521b) are fitted with the fitting parts (61a, 61b), the protruding length of the protruding part from the fitting part is longer than that between the shielding plate and the casing the distance.

According to the imaging device of the above-described configuration, even if the shield plate is in a state in which the shield plate is extended to the outside as much as possible and is in contact with the housing, the connection state between the projection portion and the fitting portion is not released. Thereby, the detachment of the second substrate from the shield plate can be further reliably prevented.

In the above-mentioned photographing device, preferably,

The shielding plate can be inserted into the second substrate from an opening direction, and has a bent portion (64a, 64b) bent outward at an end portion in the opening direction.

According to the imaging device having the above-described configuration, by forming the configuration having the bent portion, the second substrate can be easily inserted from the opening direction of the shield plate, and the assembly can be easily assembled. In addition, since the folded portion is folded outward, the folded portion, which is a part of the shield plate, has a structure in which the folded portion is close to the case, so that the end portion in the opening direction of the shield plate can be prevented from being excessively spread outward, and the second substrate can be restrained. fall off.

In the above-mentioned photographing device, preferably,

The casing includes: a front casing; a rear casing, which is arranged behind the front casing in the direction of the optical axis,

An end portion of the shield plate in the opening direction overlaps the front case on a plane perpendicular to the optical axis direction

According to the imaging device of the above-described configuration, when the end portion of the shield plate in the opening direction expands outward, the end portion is in a state where the end portion easily contacts the front case, so that the second substrate can be more reliably prevented from falling off.

In the above-mentioned photographing device, preferably,

The protruding portion protrudes at an obtuse angle with respect to the edge portion of the second substrate.

According to the imaging device of the above-described configuration, the stress toward the inner side of the shield plate can be generated with respect to the second substrate, so that the second substrate can be more effectively suppressed from falling off from the shield plate.

In the above-mentioned photographing device, preferably,

The protruding portion protrudes at an angle of 95 degrees or more with respect to the edge portion of the second substrate.

According to the imaging device having the above configuration, it is possible to have a structure in which a certain or more stress is likely to be generated between the second substrate and the shielding plate. Therefore, it is possible to more effectively prevent the second substrate from falling off the shielding plate. More preferably, the protruding portion is configured to protrude at an angle of 105 degrees or more with respect to the edge portion of the second substrate.

Description of drawings

FIG. 1 is an external perspective view of the imaging device according to Embodiment 1 viewed from the front side.

2 is an external perspective view of the imaging device according to Embodiment 1 as viewed from the rear side.

3 is an exploded perspective view of the imaging device according to Embodiment 1 as viewed from the front side.

4 is an exploded perspective view of the imaging device according to Embodiment 1 as viewed from the rear side.

FIG. 5 is a cross-sectional view of the imaging device of Embodiment 1 at a position where the flexible substrate 53 can be seen.

6 is a cross-sectional view of the imaging device of Embodiment 1 at a position where the leaf spring portion 63 can be seen.

FIG. 7 is an exploded perspective view of a state in which the rear case 7 , the shield plate 6 , and the second substrate 52 are connected in the imaging device according to the first embodiment, as seen from the rear side.

8 is an exploded perspective view of the imaging device according to Embodiment 2 as viewed from the front side.

9 is an exploded perspective view of the imaging device according to Embodiment 2 as viewed from the rear side.

FIG. 10 is an exploded perspective view of a state in which the rear case 7 , the shielding plate 6 , and the second substrate 52 are connected in the imaging device according to Embodiment 2 as seen from the rear side.

11 is a plan view of the imaging device according to Embodiment 2 as viewed from the front side.

FIG. 12 is a cross-sectional view at the position C-C of FIG. 11 in the imaging device of Embodiment 2. FIG.

FIG. 13 is a cross-sectional view at the position C-C of FIG. 11 in the imaging device of Embodiment 3. FIG.

Detailed ways

One of the characteristics of the imaging device of the present invention is that the second substrate is not parallel to the first substrate, but is arranged to have a predetermined angle. In addition, another feature of the present invention resides in that the second substrate is not easily dropped from the shielding plate disposed so as to surround the first substrate and the second substrate.

In addition, in this specification, the center position of a lens, that is, the center position of the light which injects into an imaging element is called an "optical axis." The photographic subject located on the opposite side of the photographic element with respect to the lens is referred to as a "subject". The direction in which the subject is located relative to the imaging element is referred to as "front side" or "forward in the optical axis direction", and the direction in which the imaging element is located relative to the subject is referred to as "rear side" or "optical axis direction rearward".

Embodiments of the present invention will be described based on the following structures. However, the embodiment described below is merely an example of the present invention, and should not be interpreted as limiting the technical scope of the present invention. In addition, in each drawing, the same code|symbol is attached|subjected to the same structural member, and the description may be abbreviate|omitted.

1. Embodiment 1

2. Embodiment 2

3. Embodiment 3

4. Supplementary matters

<1. Embodiment 1>

Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 7 . 1 and 2 are external views of the imaging device, wherein FIG. 1 is a view viewed from the front side, and FIG. 2 is a view viewed from the rear side. 3 and 4 are exploded perspective views of the imaging device, FIG. 3 is a view seen from the front side, and FIG. 4 is a view seen from the rear side. 5 and 6 are cross-sectional views of the imaging device, FIG. 5 is a cross-sectional view at a position where the flexible substrate 53 can be seen, and FIG. 6 is a cross-sectional view at a position where the leaf spring portion 63 can be seen. FIG. 7 is an exploded perspective view of the state in which the rear case 7 , the shield plate 6 , and the second substrate 52 are connected, as seen from the rear side.

As shown in the figure, the imaging device of the present embodiment is configured to include a lens barrel 1, a waterproof seal 2, a front case 3, a waterproof seal 4, a first substrate 51, a second substrate 52, a shielding plate 6, and a rear housing 7.

<Front case 3>

The front case 3 is a member that forms a housing (housing) of the imaging device together with the rear case 7 , and is formed of resin, metal, or the like. The front case 3 has an opening centered on the optical axis at the front in the optical axis direction, is open so as to be connectable to the rear case 7 at the rear in the optical axis direction, and has a substantially rectangular peripheral surface to cover the optical axis. By connecting the front case 3 and the rear case 7 , an internal space for accommodating the lens barrel 1 , the first substrate 51 , the second substrate 52 , the shielding plate 6 , and the like is formed. As shown in FIG. 1 , the lens 1 a held by the lens barrel 1 is located at the front opening of the front case 3 in the optical axis direction.

<Rear case 7>

As described above, the rear case 7 is connected to the front case 3 to form a space for accommodating the lens barrel 1 , the first substrate 51 , the second substrate 52 , the shielding plate 6 , and the like. The rear case 7 has a shape along the shielding plate 6, has a surface substantially perpendicular to the optical axis at the rear in the optical axis direction, and has a substantially rectangular shape protruding from the surface toward the front in the optical axis direction so as to cover the optical axis. peripheral surface. In addition, the rear case 7 protrudes from this surface toward the rear in the optical axis direction along the shape of the shielding plate 6 . The front of the rear case 7 in the optical axis direction has substantially the same shape as the rear of the front case 3 in the optical axis direction, and is connected by connecting screws 85 and 86 in the assembled state. A prevention seal 4 is arranged between the rear case 7 and the front case 3 . The rear case 7 has a connector portion 74 for connecting the connector 512 of the first substrate 51 and an external device to the rear in the optical axis direction.

As shown in FIG. 7 , the rear case 7 has board guides 71 and 72 extending rearward in the optical axis direction. A groove slightly thicker than the thickness of the second substrate 52 is formed between the substrate guides 71 and 72 . The board guide portion 71 has a cutout at the corner portion on the side where the second board 52 is inserted forward in the optical axis direction, so that the second board 52 can be easily inserted between the board guide portions 71 and 72 . In the assembled state, the second substrate 52 is arranged between the substrate guides 71 and 72 . In addition, the rear case 7 has a protruding portion 73 extending rearward in the optical axis direction. In the assembled state, the second substrate 52 is held by the protruding portion 73 and the leaf spring portion 63 of the shielding plate 6 .

<Lens barrel 1>

The lens barrel 1 is a cylindrical member extending in the optical axis direction, and holds one or more optical members including the lens 1a. The optical member held by the lens barrel 1 includes, in addition to the lens 1a, a lens, a spacer, an aperture plate, an optical filter, and the like. The lens including the lens 1a is formed of a transparent material such as glass or plastic, and transmits light from the front in the optical axis direction while refracting the light toward the rear in the optical axis direction. The spacer is a plate-shaped and annular member having an appropriate thickness in the optical axis direction, and is used to adjust the position of each lens in the optical axis direction. The spacer has an opening in a center portion including the optical axis. The aperture plate determines the outermost position of the light passing through. Optical filters suppress or block light of specified wavelengths. The optical filter includes, for example, an infrared cut filter or the like that suppresses passing infrared rays. The number of these optical members can be changed arbitrarily.

<Waterproof seal 2>

The waterproof seal 2 is an annular member formed of an elastic member such as rubber, and is arranged between the front case 3 and the lens barrel 1 to connect the front case 3 and the lens barrel 1 without a gap. effect. The waterproof seal 2 is annular at a position along the outer edge of the opening of the front case 3 .

<Waterproof seal 4>

The waterproof seal 4 is a rectangular member formed of an elastic member such as rubber, and is arranged between the front case 3 and the rear case 7 to connect the front case 3 and the rear case 7 without a gap. effect. The waterproof seal 4 is formed in a rectangular shape along a rectangular opening portion rearward in the optical axis direction of the front case 3 and a rectangular opening portion frontward in the optical axis direction of the rear case 7 .

In addition, the shape of the open portion in the optical axis direction rear of the front case 3, the open portion in the optical axis direction front of the rear case 7, and the shape of the waterproof seal 4 is not limited to a rectangular shape, and may be a circular shape or is polygonal, etc.

<First substrate 51>

The first substrate 51 is a rigid substrate on which the imaging element 511 is mounted. Electronic components other than the imaging element 511 may be mounted on the first substrate 51 . A connector 512 is mounted on the rear surface of the first substrate 51 in the optical axis direction. Since the imaging element 511 is mounted on the front surface of the first substrate 51 in the optical axis direction, the first substrate 51 is arranged along a plane perpendicular to the optical axis so that the imaging element 511 is irradiated with light during imaging. As shown in FIG. 5 , a flexible substrate 53 is connected to the first substrate 51 , and the first substrate 51 is electrically connected to the second substrate 52 via the flexible substrate 53 . The electrical signal acquired by the imaging element 511 is subjected to specific electrical processing or signal processing by the electronic components mounted on the first substrate 51 and the second substrate 52 , and then passes through the connector of the rear case 7 from the connector 512 as image data. The section 74 outputs to the outside of the imaging device. The first substrate 51 is connected to the front case 3 by connecting screws 81 and 82 to be fixed in position.

The imaging element 511 is a photoelectric conversion element that converts the irradiated light into an electrical signal, such as a C-MOS sensor, a CCD, or the like, but is not limited thereto. In addition, in the imaging device, an imaging unit other than the imaging element 511 that requires an imaging function may be employed. The imaging element is an example of the "imaging unit" of the present invention.

<Second substrate 52>

The second substrate 52 is a rigid substrate on which electronic components are mounted. The second substrate 52 is arranged horizontally on the optical axis and extends in a direction perpendicular to the first substrate 51 . By arranging the second substrate 52 in this manner, the second substrate 52 can be arranged without interfering with the connector 512 and the connector portion 74 . Moreover, compared with the structure which arrange|positions both the 1st board|substrate 51 and the 2nd board|substrate 52 perpendicularly to the optical axis, the length (thickness) in the optical axis direction can be shortened.

The second substrate 52 has protrusions 521a and 521b which face outward with respect to the optical axis and protrude from the outer edge. These protrusions 521a, 521b are formed at positions facing the fitting portions 61a, 61b so as to be inserted into the fitting portions 61a, 61b formed in the shield plate 6, respectively, in the assembled state. In addition, the second substrate 52 receives an urging force from the plate spring portion 62 of the shield plate 6 to the front in the optical axis direction, and receives an urging force from the plate spring portion 63 in a direction perpendicular to the optical axis. The protruding portions 521 a and 521 b of the second substrate 52 are urged toward the rear edges in the optical axis direction of the fitting portions 61 a and 61 b of the shielding plate 6 by the urging force received from the plate spring portion 62 . In addition, the second base plate 52 is urged toward the protruding portion 73 of the rear case 7 by the urging force received from the plate spring portion 63 . In this way, the second substrate 52 is stably held with respect to the shield plate 6 and the rear case 7 by receiving forces from two directions.

As shown in FIG. 7 , the second board 52 is arranged to be inserted between board guides 71 and 72 formed in the rear case 7 .

<Flexible substrate 53>

The flexible substrate (FPC) 53 is a substrate having flexibility, and electrically connects the first substrate 51 and the second substrate 52 to enable exchange of signals with each other.

<Shield plate 6>

The shielding plate 6 is formed of a plate-shaped member such as a metal having conductivity, and is disposed so as to cover the first substrate 51 and the second substrate 52 in an assembled state. More specifically, the shielding plate 6 has a first box-shaped portion that surrounds the first substrate 51 and a second box-shaped portion that surrounds the second substrate 52 , which are opened forward in the optical axis direction, respectively. At the time of assembly, the first substrate 51 and the second substrate 52 are inserted and assembled from the open portion forward in the optical axis direction.

As shown in FIGS. 3 to 6 , the shield plate 6 has fitting parts 61 a and 61 b , a leaf spring part 62 , and a leaf spring part 63 . The fitting parts 61 a and 61 b are through holes arranged at positions facing the protruding parts 521 a and 521 b of the second substrate 52 . In the assembled state, the protruding portion 521a is inserted into the fitting portion 61a, the protruding portion 521b is inserted into the fitting portion 61b, and the protruding portions 521a and 521b protrude outward.

The plate spring portion 62 is formed on the rear surface of the shield plate 6 in the optical axis direction, and as shown in FIGS. 5 and 6 , biases the optical axis rearward end of the second substrate 52 forward in the optical axis direction. On the other hand, since the protruding portions 521a and 521b of the second substrate 52 are inserted into the fitting portions 61a and 61b of the shield plate 6, the protruding portions 521a and 521b are pressed against the fitting portions 61a and 61b by their front ends in the optical axis direction. The rear end in the optical axis direction of 61b is stably held.

The plate spring portion 63 is formed on a surface different from the plate spring portion 62 in the second box-shaped portion of the shielding plate 6 for surrounding the second substrate 52, and as shown in FIG. The force is applied to the second substrate 52 in a direction perpendicular to the force direction. The plate spring portion 63 is brought into contact with the wiring pattern formed on the second substrate 52 at the ground potential, whereby the entire shield plate 6 becomes the ground potential.

In the imaging device of the present embodiment, in the configuration including the first substrate 51 and the second substrate 52 as described above, the second substrate 52 is arranged substantially perpendicular to the first substrate 51 . With such a configuration, the length (thickness) of the imaging device in the optical axis direction can be shortened compared to the configuration in which the first substrate 51 and the second substrate 52 are arranged horizontally to each other. In particular, by arranging the connector portion 74 and the second substrate 52 so as not to interfere with each other, the miniaturization of the imaging device can be achieved more effectively.

In the above-mentioned structure, the second substrate 52 does not necessarily need to be arranged vertically with respect to the first substrate 51, and a certain effect can be obtained as long as the second substrate 52 is arranged at a predetermined angle. For example, if the length of the connector portion 74 is shorter than the length of one side of the second substrate 52 , the imaging device can be more effectively reduced in size by arranging the second substrate 52 slightly inclined from vertical.

Particularly preferably, the second substrate 52 is arranged at an angle of 45 degrees or less with respect to the first substrate 51 . With such a configuration, the overlapping area of the first substrate 51 and the second substrate 52 can be reduced to some extent, so that the connector 512 of the first substrate 51 and the connectors 512 of the first substrate 51 can be easily arranged behind the first substrate 51 in the optical axis direction. The connector portion 74 and the like. That is, it can be set as a structure which improves the degree of freedom of design.

In addition, in the imaging device of the present embodiment, since the shielding plate 6 is arranged to surround the first substrate 51 and the second substrate 52 , it is possible to suppress electromagnetic noise and the like from flowing from the first substrate 51 and the second substrate 52 to the shielding plate 6 . External release.

In addition, in the imaging device of the present embodiment, the second substrate 52 has the protruding portions 521a and 521b, and the shield plate 6 has the fitting portions 61a and 61b, and the two are configured to be fitted into each other. According to such a configuration, the positions of the second substrate 52 and the shield plate 6 can be fixed. Thereby, compared with the structure using the conventional adhesive agent, it becomes possible to set it as a structure which is easy to assemble, and also easy to carry out the repair process which disassembles and reassembles again after assembling.

In addition, in the imaging device of the present embodiment, the second substrate 52 can be urged in a predetermined direction by the plate spring portions 62 and 63 of the shield plate 6 , so that the second substrate can be stably held. 52 structure. In addition, even if only one of the plate spring portions 62 and 63 is provided, the effect of holding the second substrate 52 stably to a certain extent can be obtained.

In addition, the leaf spring portions 62 and 63 may be other biasing members instead of the leaf spring integrally formed with the shield plate 6 . However, by having the structure of the above-mentioned plate spring portions 62 and 63 formed integrally with the shield plate 6, the second substrate 52 can be stably held with a relatively simple structure.

In addition, in the imaging device of the present embodiment, since the plate spring portion 63 is electrically connected to the ground potential of the second substrate, it is possible to further enhance the shielding effect of the shielding plate 6 against electromagnetic noise. In addition, the ground potential of the first substrate 51 and the second substrate 52 can be strengthened, and a circuit structure more resistant to noise can be formed.

<Variation>

The imaging device of the present embodiment is characterized in that the second substrate 52 is arranged perpendicularly or at an angle to the first substrate 51 , but the second substrate 52 may be arranged so as not to interfere with the connector 512 included in the first substrate 51 . Substrate 52 . That is, the second substrate 52 is arranged so as not to overlap with the connector 512 of the first substrate 51 when viewed from above in the optical axis direction. In this case, the second substrate 52 may be arranged horizontally with respect to the first substrate 51 .

In the imaging device having the above configuration, since the second substrate 52 and the connector 512 are arranged so as not to interfere with each other, the length (thickness) of the imaging device in the optical axis direction can be easily reduced.

<2. Embodiment 2>

Next, Embodiment 2 of the present invention will be described with reference to FIGS. 8 to 12 . The imaging device of this embodiment is different from the imaging device of Embodiment 1 in that the shape of the shielding plate 6 is different. In the following description, the description of the same structure as Embodiment 1 is omitted, and only the structure different from Embodiment 1 is demonstrated.

8 and 9 are exploded perspective views of the imaging device, FIG. 8 is a view viewed from the front side, and FIG. 9 is a view viewed from the rear side. FIG. 10 is an exploded perspective view of a state in which the rear case 7 , the shield plate 6 , and the second substrate 52 are connected, as seen from the rear side. FIG. 11 is a plan view of the imaging device viewed from the front side. FIG. 12 is a cross-sectional view of the imaging device at the C-C position of FIG. 11 .

As shown in FIGS. 8 to 10 , the shielding plate 6 of the present embodiment has bent portions 64 a and 64 b which are positioned forward in the optical axis direction of the second box-shaped portion surrounding the second substrate 52 . The end is bent towards the outside. More specifically, the second substrate 52 can be inserted from the front in the opening direction of the shielding plate 6, that is, in the optical axis direction. It is bent so as to expand, and the bent portions become bent portions 64a and 64b.

In the imaging device of the present embodiment, the shielding plate 6 has the bent portions 64a and 64b as described above, and the second substrate 52 can be easily inserted from the opening direction of the shielding plate 6 (eg, forward in the optical axis direction). structure. In addition, since the bent portions 64a and 64b are bent outward, the bent portion is configured to be close to the front case 3, thereby preventing the end portion in the opening direction of the shielding plate 6 from spreading to the outside excessively. The second substrate 52 is prevented from falling off.

As shown in FIG. 12 , in the assembled state, the protruding portions 521 a and 521 b of the second substrate 52 are inserted into the fitting portions 61 a and 61 b of the shield plate 6 . At this time, the distance ( P1 - P2 ) between the surface P1 on the inner side (the side close to the optical axis) of the shielding plate 6 and the surface P2 on the outer side (the side away from the optical axis) of the protrusion 521 a is longer than the bending distance ( P1 - P2 ). The distance (P3-P4) between the point P3 on the outside (side away from the optical axis) of the portion 64a and the surface P4 on the inside (side close to the optical axis) of the front case 3 . In addition, the protrusion part 521b and the fitting part 61b also have the same structure.

In the imaging device of the present embodiment, with the above-described configuration, even in a state where the bent portions 64a and 64b are extended to the outside (in the direction away from the optical axis) to the maximum extent and are in contact with the front case 3, only the movement ratio is greater than Since P1-P2 is short in distance P3-P4, the connection state of the protrusion part 521a or 521b and the fitting part 61a, 61b can also be set as the structure which is not released. Accordingly, it is possible to prevent the second substrate 52 from falling off the shield plate 6 .

In addition, the shielding plate 6 does not necessarily need to have the bent portions 64a and 64b, and the distance between the point on the outer side of the end portion forward in the optical axis direction of the shielding plate 6 and the inner surface P4 of the front case 3 may be shorter than that of the shielding plate. The structure of the point P1 on the inner side of 6 and the point P3 on the outer side of the protrusion 521a. Even with such a configuration, the effect that the second substrate 52 does not easily come off from the shielding plate 6 can be obtained in the same manner as described above.

In addition, the shielding plate 6 may have a structure in which a curved portion that is bent outward, a protruding portion that protrudes outward, or the like is provided near the front end in the optical axis direction to shorten the distance between the shielding plate 6 and the front case 3 . According to such a structure, the range in which the end portion of the shield plate 6 spreads can be narrowed, and the second substrate 52 can not easily come off from the shield plate 6 .

In addition, the end portion of the shielding plate 6 does not necessarily have to be configured to overlap the front case 3 on the plane horizontal to the optical axis, and the end portion of the shielding plate 6 may be configured to overlap the rear case 7 . Even in this case, similarly to the above, it is possible to prevent the second substrate 52 from falling off from the shielding plate 6 .

In addition, in the imaging device of the present embodiment, the ends of the bent portions 64a and 64b serving as the ends in the opening direction of the shield plate 6 are formed so as to overlap the front case 3 on the plane perpendicular to the optical axis direction. A shape that protrudes from the rear side toward the front side in a manner of location. As a result, when the bent portions 64a and 64b are expanded outward, the end portions are easily brought into contact with the front case 3, so that the second substrate 52 can be reliably prevented from falling off.

<3. Embodiment 3>

Next, Embodiment 3 of the present invention will be described with reference to FIG. 13 . The imaging device of the present embodiment differs from the imaging device of the second embodiment in that the shapes of the protrusions 521 a and 521 b of the second substrate 52 are different. In the following description, the description of the same structure as that of Embodiment 1 and Embodiment 2 is omitted, and only the characteristic part different from Embodiment 1 and Embodiment 2 will be described.

FIG. 13 is a cross-sectional view of the imaging device at the position C-C of FIG. 11 . As shown in FIG. 13 , the protrusions 521 a and 521 b of the second substrate 52 of the present embodiment protrude at an obtuse angle with respect to the edge of the second substrate 52 . In other words, the front ends in the optical axis direction of the protrusions 521a and 521b, that is, the parts that come into contact with the fitting parts 61a and 61b, are inclined. That is, the notch-shaped part formed by the edge part of the 2nd board|substrate 52 and the protrusion parts 521a, 521b is an acute-angle shape.

By forming the protruding portions 521a and 521b of the second substrate 52 as described above, stress is generated in the vicinity of the end portion of the shield plate 6 toward the inside (direction closer to the optical axis). Thereby, the fitting of the fitting parts 61 a and 61 b of the shield plate 6 and the protrusion parts 521 a and 521 b of the second substrate 52 is released, and the second substrate 52 can be effectively prevented from falling off.

Moreover, it is preferable that the protrusion parts 521a and 521b of the 2nd board|substrate 52 have the structure which protrudes at an angle of 95 degrees or more with respect to the edge part of the 2nd board|substrate 52. FIG. In other words, it is preferable that the protrusions 521a and 521b are formed to have an angle of 5 degrees or more with respect to a plane perpendicular to the optical axis. With such a structure, it is possible to have a structure in which a certain or more stress is likely to be generated between the shield plate 6 and the second substrate 52 , so that the second substrate 52 can be more effectively suppressed from falling off the shield plate 6 .

More preferably, the protrusions 521 a and 521 b of the second substrate 52 are configured to protrude at an angle of 105 degrees or more with respect to the edge of the second substrate 52 . According to such a structure, a certain or more stress is more likely to be generated between the shield plate 6 and the second substrate 52 , so that the second substrate 52 can be more effectively suppressed from falling off the shield plate 6 .

<4. Supplementary information>

The embodiments of the present invention have been specifically described above. In the above description, only one embodiment is described, and the scope of the present invention is not limited to this embodiment, and the scope of the present invention should be broadly understood as a range that can be grasped by those skilled in the art.

For example, the plate spring portions 62 and 63 of the above-described embodiments are configured to apply urging forces in the directions perpendicular to each other to the second substrate 52, but may be configured to not necessarily apply urging forces in the directions perpendicular to each other, even if they are configured from Applying force in different directions can also get a certain effect.

In addition, in the embodiment, the structure having the two rigid boards of the first board 51 and the second board 52 has been described, but a structure further including an additional rigid board may be employed. In this case, similarly to the second substrate 52 , the additional substrate is arranged at a predetermined angle (for example, vertical) with respect to the first substrate 51 , and the imaging device can be further reduced in size. In addition, even if the additional substrate is arranged horizontally with respect to the first substrate 51, a certain effect can be obtained.

industrial availability

The present invention is suitable for use as an in-vehicle imaging device or the like.

Explanation of reference numerals:

1: Lens barrel

1a: Lens

2: Waterproof seal

3: Front housing

4: Waterproof seal

51: First substrate

511: Shooting Elements

512: Connector

52: Second substrate

521a, 521b: protrusions

53: Flexible substrate

6: Shield plate

7: Rear shell

61a, 61b: Fitting part

62, 63: Leaf spring part

64a, 64b: Bending part

71, 72: Board guides

73: Protrusion

74: Connector part

81 to 86: Connecting screws

Claims (16)

1. A photographing apparatus, wherein,

comprising:

an imaging unit that images an object;

a first substrate on which the imaging unit is mounted;

a second substrate on which an electronic component electrically connected to the first substrate is mounted; and

a lens barrel for holding a lens,

the second substrate is disposed at a predetermined angle with respect to the first substrate.

2. The camera of claim 1, wherein,

the first substrate is disposed perpendicularly to the optical axis,

the second substrate is disposed at an angle of 45 degrees or less with respect to an optical axis.

3. The photographing apparatus according to claim 1 or 2, wherein,

the imaging device further includes a shield plate made of metal and disposed so as to surround the first substrate and the second substrate.

4. The photographing apparatus according to any one of claims 1 to 3,

the second substrate has a protrusion portion,

the shield plate has a fitting portion that fits the protrusion portion.

5. The camera of claim 4, wherein,

the shield plate has a first biasing portion that biases the second substrate in a predetermined direction.

6. The camera of claim 4, wherein,

the first urging portion is a plate spring formed on the shield plate.

7. The camera of claim 5 or 6, wherein,

the shield plate has a second biasing portion that biases the second substrate in a direction orthogonal to the predetermined direction.

8. The camera of claim 7, wherein,

the second biasing portion is a plate spring formed on the shield plate.

9. The photographing apparatus according to any one of claims 5 to 8,

the first biasing portion is electrically connected to a ground potential of the second substrate.

10. The photographing apparatus according to any one of claims 1 to 9,

the first substrate has a connector protruding rearward in the optical axis direction and electrically connected to other structures,

the second substrate is disposed so as not to overlap with the connector when viewed from above in the optical axis direction.

11. A photographing apparatus, wherein,

comprising:

an imaging unit that images an object;

a first substrate on which the imaging unit is mounted;

a second substrate on which an electronic component electrically connected to the first substrate is mounted; and

a lens barrel for holding a lens,

the first substrate has a connector protruding rearward in the optical axis direction and electrically connected to other structures,

the second substrate is disposed so as not to overlap with the connector when viewed from above in the optical axis direction.

12. A photographing apparatus, wherein,

comprising:

an imaging unit that images an object;

a first substrate on which the imaging unit is mounted;

a second substrate arranged at a predetermined angle with respect to the first substrate and on which an electronic component electrically connected to the first substrate is mounted;

a lens barrel for holding a lens;

a shield plate made of metal and disposed so as to surround the first substrate and the second substrate; and

a housing for accommodating the first substrate, the second substrate, the lens barrel, and the shielding plate,

the second substrate has a protrusion portion,

the shield plate has a fitting portion to be fitted with the protrusion portion,

when the protrusion portion is fitted with the fitting portion, a length of the protrusion portion protruding from the fitting portion is longer than a distance between the shield plate and the housing.

13. The camera of claim 12, wherein,

the shield plate is insertable into the second substrate from an opening direction, and has a bent portion bent outward at an end in the opening direction.

14. The camera of claim 12 or 13, wherein,

the housing includes: a front housing; a rear case disposed rearward in the optical axis direction with respect to the front case,

an end portion of the shielding plate in the opening direction overlaps the front case on a surface perpendicular to the optical axis direction.

15. The camera of any of claims 12 to 14,

the protrusion protrudes at an obtuse angle with respect to an edge of the second substrate.

16. The camera of claim 15, wherein,

the protrusion protrudes at an angle of 95 degrees or more with respect to the edge of the second substrate.

Images