JP2007233262A - Imaging apparatus and personal digital assistant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a higher-performance imaging apparatus and a personal digital assistant equipped with the imaging apparatus. <P>SOLUTION: The imaging apparatus includes: an imaging optical system 2 for guiding subject light; an imaging device 3 photoelectrically converting the subject light guided by the imaging optical system 2; an infrared cut filter 4 arranged between the imaging optical system 2 and the imaging device 3 and cutting infrared light from the subject light guided by the imaging optical system 2; and a light shielding member 5 arranged between the imaging optical system 2 and the infrared cut filter 4 and intercepting unnecessary light out of the subject light guided by the imaging optical system 2. The surface on the imaging device 3 side of the imaging optical system 2 is made a convex surface 2a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an imaging device and a portable terminal.

  Conventionally, a small and thin imaging device is mounted on a portable terminal such as a cellular phone or a PDA (Personal Digital Assistant) (see, for example, Patent Document 1).

For example, as shown in FIG. 10, the imaging device 10B includes an outer frame member 1B, an imaging optical system 2B for guiding subject light, an optical system support 21B that supports the imaging optical system 2B, and an imaging optical system 2B. An infrared cut filter 4B that cuts infrared light from the subject light guided to, and a light shielding member 5B that shields unnecessary light from the subject light guided to the imaging optical system 2B and cut by the infrared cut filter 4B. A substrate 31B having an imaging element 3B that photoelectrically converts subject light, which is guided to the imaging optical system 2B, cuts infrared rays by the infrared cut filter 4B, and shields unnecessary light by the light shielding member 5B, and the like. Yes. In the imaging device 10B, the light shielding member 5B is formed integrally with the outer frame member 1B.
The imaging device 10B, for example, fixes the outer frame member 1B on the substrate 31B, then houses the infrared cut filter 4B from the opening 121B provided on the upper surface of the outer frame member 1B, and then optically opens from the opening 121B. Assembling is performed by accommodating the imaging optical system 2B supported by the system support 21B. The infrared cut filter 4B is supported on the upper surface of the light shielding member 5B, and is fixed to the outer frame member 1B via the light shielding member 5B with an adhesive G. The imaging optical system 2B supported by the optical system support 21B. Are fixed to the inner surface of the outer frame member 1B on the outer surface of the optical system support 21B.
JP 2005-148197 A

By the way, the shorter the back focus, the more the optical imaging apparatus can be designed freely. Therefore, if the back focus can be shortened, a higher-performance imaging device can be provided.
For example, in the imaging device 10B shown in FIG. 10, the back focus can be shortened by forming the light shielding member 5B thin. However, since the light shielding member 5B is formed in a shape protruding with a length corresponding to the range of light shielding from the inner surface of the outer frame member 1B toward the center of the outer frame member 1B, from the problem of formability, the light shielding member It is difficult to form 5B thinner than the present, and as a result, it has been difficult to provide an imaging device with higher performance than the present.

  An object of the present invention is to provide a higher-performance imaging device and a portable terminal including the imaging device.

In order to solve the above-mentioned problem, the invention according to claim 1 is an imaging apparatus,
An imaging optical system for guiding subject light;
An image sensor that photoelectrically converts subject light guided to the imaging optical system;
A translucent member disposed between the imaging optical system and the imaging element;
A light-shielding member that is disposed between the imaging optical system and the light-transmissive member and shields unnecessary light out of subject light guided to the imaging optical system, the imaging element side of the imaging optical system The surface is a convex surface.

The invention according to claim 2 is the imaging apparatus according to claim 1,
An outer frame member having an opening for introducing subject light, wherein the imaging optical system, the imaging element, the translucent member, and the light shielding member are disposed inside;
And a translucent member support portion that protrudes from the inner surface of the outer frame member and supports an end portion of the translucent member on the imaging element side.

The invention according to claim 3 is an imaging apparatus,
An imaging optical system for guiding subject light;
An image sensor that photoelectrically converts subject light guided to the imaging optical system;
A translucent member disposed between the imaging optical system and the imaging element;
A light shielding member that is disposed between the imaging optical system and the translucent member and shields unnecessary light of the subject light guided to the imaging optical system;
An outer frame member having an opening for introducing subject light, wherein the imaging optical system, the imaging element, the translucent member, and the light shielding member are disposed inside;
And a translucent member support portion that protrudes from the inner surface of the outer frame member and supports an end portion of the translucent member on the imaging element side.

The invention according to claim 4 is the imaging apparatus according to claim 2 or 3,
The translucent member is sandwiched between the translucent member support portion and the light shielding member.

Invention of Claim 5 is an imaging device as described in any one of Claims 2-4,
The outer frame member includes a concave or convex engagement portion provided along the optical axis direction on the inner surface thereof.
The light shielding member is a convex engaged portion engaged with a concave engaging portion of the outer frame member or a concave engaged member engaged with a convex engaging portion of the outer frame member. It is characterized by comprising a joint.

  According to a sixth aspect of the present invention, in the imaging apparatus according to any one of the second to fifth aspects, the light shielding member has a notch in which a part of an end surface thereof is notched so that the imaging optical system side opens. It comprises a part.

According to the invention described in claim 7, in the imaging apparatus according to any one of claims 2 to 6,
The light shielding member is bonded to the outer frame member.

According to the invention described in claim 8, in the imaging device according to any one of claims 1 to 7,
The translucent member is an infrared cut filter that cuts infrared rays from the subject light guided to the imaging optical system.

  According to a ninth aspect of the present invention, in the portable terminal, the imaging device according to any one of the first to eighth aspects is provided in a terminal body.

  According to the first aspect of the present invention, since the light shielding member is disposed between the imaging optical system and the light transmissive member, and the surface on the imaging element side of the imaging optical system is a convex surface, It can arrange | position in the space (space which was a dead space) between the edge part vicinity of the surface by the side of the image pick-up element of an imaging optical system, and a translucent member. Therefore, the back focus can be shortened as compared with the conventional imaging device in which the light shielding member is disposed between the light transmissive member and the imaging element, and as a result, a higher performance imaging device is provided. can do.

According to the invention described in claim 2, it is needless to say that the same effect as that of the invention described in claim 1 can be obtained. Since the light shielding member is separate from the outer frame member, the light shielding member and the outer frame member are provided. Thus, there is no problem of moldability as in the conventional imaging device in which the light shielding member is integrally formed, and the light shielding member can be formed thinner than the current one. Moreover, since the translucent member support part should just protrude from the inner side of an outer frame member by the length which can support a translucent member, the thickness of a translucent member support part is compared with the thickness of the conventional light-shielding member. Thinly moldable. Therefore, the back focus can be shortened as compared with the conventional imaging device, and as a result, an even higher performance imaging device can be provided.
In addition, since the outer frame member has an opening for introducing subject light, and the translucent member support unit supports the end of the translucent member on the imaging element side, the translucent member and the imaging optical system are arranged in one direction. It can be assembled from the direction from the opening toward the image sensor. Therefore, for example, it is possible to easily assemble the imaging device as compared with a case in which the translucent member is attached to the lower surface side of the outer frame member.

According to the third aspect of the present invention, since the light shielding member is a separate body from the outer frame member, there is a problem of formability as in the conventional imaging device in which the light shielding member and the outer frame member are integrally formed. It is possible to form the light shielding member thinner than the present. Moreover, since the translucent member support part should just protrude from the inner side of an outer frame member by the length which can support a translucent member, the thickness of a translucent member support part is compared with the thickness of the conventional light-shielding member. Thinly moldable. Therefore, the back focus can be shortened as compared with the conventional imaging device, and as a result, a higher performance imaging device can be provided.
In addition, since the outer frame member has an opening for introducing subject light, and the translucent member support unit supports the end of the translucent member on the imaging element side, the translucent member and the imaging optical system are arranged in one direction. It can be assembled from the direction from the opening toward the image sensor. Therefore, for example, it is possible to easily assemble the imaging device as compared with a case in which the translucent member is attached to the lower surface side of the outer frame member.

According to the invention described in claim 4, it is needless to say that the same effect as that of the invention described in claim 2 or 3 can be obtained, and the translucent member is sandwiched between the translucent member support portion and the light shielding member. Therefore, even if the translucent member is thin, it can be securely fixed at a predetermined position, and problems such as deterioration of an image obtained by the imaging device can be solved.
Specifically, for example, in a configuration in which a translucent member, such as a conventional imaging device, is not sandwiched between a translucent member support portion and a light shielding member, for example, if the translucent member is thin, the translucent member is The problem that the light-transmitting member cannot be securely fixed at a predetermined position due to floating, for example, it is necessary to fix the light-transmitting member directly in the image pickup device with an adhesive, so that the adhesive on the surface of the light-transmitting member Wraps around and causes problems such as deterioration of an image obtained by the imaging apparatus.
Therefore, when the translucent member is sandwiched between the translucent member support portion and the light shielding member as in the image pickup apparatus of the present invention, the translucent member is prevented from floating and the adhesive is prevented from entering the translucent member surface. Therefore, even if the translucent member is thin, it can be securely fixed at a predetermined position, and problems such as deterioration of an image obtained by the imaging device can be solved.

  According to the invention described in claim 5, it is needless to say that the same effect as that of any one of claims 2 to 4 can be obtained, and the outer frame member includes the engaging portion, and the light shielding member. Has an engaged portion that is engaged with the engaging portion of the outer frame member, so that the light shielding member can be positioned reliably.

  According to the invention described in claim 6, it is a matter of course that the same effect as that of the invention described in any one of claims 2 to 5 can be obtained. Since the notch can be used as an adhesive reservoir, for example, the light shielding member can be reliably fixed to the outer frame member by the adhesive. Moreover, dripping of an adhesive agent becomes easy and workability | operativity improves.

  According to the invention described in claim 7, in the image pickup apparatus according to any one of claims 2 to 6, since the light shielding member is bonded to the outer frame member, it is possible to prevent dust from entering the image sensor side. Can be prevented.

  According to the invention described in claim 8, since the infrared ray cut filter is used as the translucent member in the imaging device according to any one of claims 1 to 7, a high-performance image can be obtained. .

  According to the invention described in claim 9, since the mobile terminal includes the imaging device according to any one of claims 1 to 8 in the terminal body, any one of claims 1 to 8 described above. It is possible to provide a portable terminal including an imaging device having the above effects.

  The best mode of an imaging device according to the present invention and a portable terminal including the imaging device will be described below with reference to the drawings. The scope of the invention is not limited to the illustrated example.

<Configuration of imaging device and portable terminal>
First, the configuration of the mobile phone M as a mobile terminal including the imaging device 10 and the imaging device 10 will be described.
The imaging device 10 is provided in a mobile phone M, for example, as shown in FIG.
Specifically, the imaging device 10 is, for example, inside the case body M1 (terminal main body) of the mobile phone M and at a position corresponding to the lower side of the liquid crystal display unit on the back surface (the liquid crystal display unit side). Are arranged so that the subject light can be taken in from the front.

2 to 5, for example, the imaging apparatus 10 includes an outer frame member 1, an imaging optical system 2 disposed inside the outer frame member 1, and an imaging optical system 2 inside the outer frame member 1. Between the imaging element 3 arranged so as to be substantially orthogonal to the optical axis O of the imaging optical system 2 and the imaging optical system 2 inside the outer frame member 1 and the imaging element 3, and substantially orthogonal to the optical axis O of the imaging optical system 2. Between the infrared cut filter 4 as the translucent member and the imaging optical system 2 and the infrared cut filter 4 inside the outer frame member 1, substantially perpendicular to the optical axis O of the imaging optical system 2. And a light shielding member 5 disposed on the surface.
Here, for example, as shown in FIGS. 2, 4, and 5, the light incident direction side in the imaging device 10 is the lower side, and the opposite side to the light incident direction in the imaging device 10 is the upper side. The direction of the optical axis O is the vertical direction.

The outer frame member 1 has, for example, an opening 121 that introduces subject light into the surface (upper surface) on the imaging optical system 2 side.
Specifically, the outer frame member 1 has, for example, a substantially rectangular parallelepiped shape with a rectangular frame 11 whose outer shape has a substantially rectangular parallelepiped shape, a substantially circular opening on the upper surface, and an opening surface on the lower surface. A cylindrical frame 12 having an opening 121 on the upper surface and continuing to the end surface of the opening of the rectangular frame 11 on the outer surface (outer surface lower end), and a support portion 13 provided protruding from the inner surface (lower inner surface) of the cylindrical frame 12. And the like (which may be formed by joining separate bodies).

The cylindrical frame 12 of the outer frame member 1 includes, for example, two concave grooves 122 and 122 provided along the optical axis O direction (vertical direction) on the inner surface of the cylindrical frame 12.
For example, the concave groove portions 122 and 122 have a shape in which the inner surface of the cylindrical frame 12 is recessed in a substantially rectangular shape toward the outer side, and at two locations on one radial line of the cylindrical frame 12 on the inner surface of the cylindrical frame 12. It is provided along the up-down direction.
Here, for example, convex portions 52 and 52 (described later) as convex engaging portions provided in the light shielding member 5 are engaged with the concave groove portions 122 and 122 as concave engaging portions. It is like that.

The cylindrical frame 12 of the outer frame member 1 includes, for example, two groove portions 123 and 123 provided on the inner surface of the cylindrical frame 12 along the optical axis O direction (vertical direction).
For example, the grooves 123 and 123 have a shape in which the inner surface of the cylindrical frame 12 is recessed in a substantially semicircular shape toward the outside, and is substantially orthogonal to the recessed direction of the recessed grooves 122 and 122 on the inner surface of the cylindrical frame 12. Two portions on the radial line of the cylindrical frame 12 are provided along the vertical direction.
Here, the groove parts 123 and 123 are, for example, the concave parts 5b11 and 52 provided in the light shielding member 5 when the convex parts 52 and 52 (described later) provided in the light shielding member 5 are engaged with the concave groove parts 122 and 122, respectively. It faces 5b11 (described later).

The support portion 13 of the outer frame member 1 supports, for example, the infrared cut filter 4 and the light shielding member 5.
Specifically, the support unit 13 includes, for example, a translucent member support unit 131 protruding from the inner surface (lower end of the inner surface) of the support unit 13. And the support part 13 supports the edge part 4a by the side of the image pick-up element 3 (lower side) of the infrared cut filter 4 on the upper surface of the translucent member support part 131 which the support part 13 has, for example, The upper surface supports the end 5a of the light shielding member 5 on the imaging element 3 side (lower side).
Here, the thickness (length in the vertical direction) of the translucent member support 131 included in the support 13 is desired to be as small as possible. Therefore, the protrusion length of the translucent member support part 131 is set to, for example, the minimum length that can support the infrared cut filter 4, and the thickness of the translucent member support part 131 is formed by the protrusion length, for example. The minimum possible thickness is set.
Moreover, the thickness of the support part 13 is the thickness of the infrared cut filter 4 and the thickness of the translucent member support part 131 so that the infrared cut filter 4 can be sandwiched between the light shielding member 5 and the translucent member support part 131, for example. It is set to be substantially the same as the sum of

The imaging optical system 2 is for guiding subject light to the imaging element 3 side, and is configured by, for example, a single lens, or a plurality of lenses, a diaphragm, and the like.
In the imaging optical system 2, for example, the surface (lower surface) of the imaging optical system 2 on the imaging element 3 side is a convex surface 2a, and the center of the surface (upper surface) on the imaging optical system 2 side from which subject light is captured is convex. It has become.
In addition, the shape of the convex surface 2a is not only that the entire lower surface of the imaging optical system 2 is convex as shown in FIGS. 4 and 5, but, for example, like the convex surface 2aA of the imaging optical system 2A shown in FIG. The vicinity of the optical axis O includes a concave surface, and the periphery of the concave surface includes a convex shape.

  The imaging optical system 2 is supported by the optical system support 21 so that, for example, the convex surface 2a (lower surface) is exposed and the convex portion of the upper surface is exposed. And the optical system support 21 which supported the imaging optical system 2 is being fixed to the inner surface (inner surface upper side) of the cylindrical frame 12 of the outer frame member 1 in the outer surface of the optical system support 21, for example.

  For example, the image pickup device 3 is guided to the image pickup optical system 2, and unnecessary light is blocked by the light blocking member 5, and subject light from which infrared rays are cut by the infrared cut filter 4 is photoelectrically converted.

  The image sensor 3 is mounted (adhered and electrically connected) on the upper surface of the substrate 31, for example. And the board | substrate 31 which mounted the image pick-up element 3 is fixing the square frame 11 so that the opening surface (lower surface) of the square frame 11 of the outer frame member 1 may be covered with the board | substrate 31 in the upper surface of the board | substrate 31, for example. .

For example, the infrared cut filter 4 cuts infrared rays from the subject light guided to the imaging optical system 2 and from which unnecessary light is shielded by the light shielding member 5.
Specifically, the infrared cut filter 4 is, for example, a form-like or glass-like filter formed of an organic material or the like, and is formed in, for example, a substantially disk shape. The diameter of the infrared cut filter 4 is set so that, for example, the end 4a of the infrared cut filter 4 can be supported by the translucent member support 131 included in the support 13 of the outer frame member 1.

For example, the light shielding member 5 shields unnecessary light of the subject light guided to the imaging optical system 2.
Specifically, for example, as shown in FIG. 7, the light shielding member 5 has a substantially disk shape, and an opening 51 having a shape and a size corresponding to a range where light shielding is not performed is provided at the center of the light shielding member 5. Is provided. The diameter of the light shielding member 5 is set to be slightly smaller than, for example, the inner diameter of the cylindrical frame 11 of the outer frame member 1 (that is, the diameter of the opening 121 included in the outer frame member 1). The upper end surface of the opening 51 provided in the light shielding member 5 is, for example, an inclined surface 51a that is inclined outward as it goes from the bottom to the top in the thickness direction (vertical direction).

The light shielding member 5 includes, for example, two convex portions 52 and 52 that are engaged with concave groove portions 122 and 122 provided on the cylindrical frame 11 of the outer frame member 1 on the end surface 5 b of the light shielding member 5.
The convex portions 52, 52 have, for example, a shape in which the end surface 5 b of the light shielding member 5 protrudes outward in a substantially rectangular shape, and 2 on the one radial line of the light shielding member 5 on the end surface 5 b of the light shielding member 5. It is provided in the place.
Here, the shape and size of the convex portions 52 and 52 are set to be shapes and sizes that can be engaged with the concave groove portions 122 and 122 provided in the cylindrical frame 11 of the outer frame member 1, for example.

In addition, the light shielding member 5 includes, for example, a notch 5b1 in which a part of the end surface 5b of the light shielding member 5 is notched so that the imaging optical system 2 side (upper side) is opened.
The notch 5b1 has a shape in which the imaging optical system 2 side (upper side) is opened on the end surface 5b other than the end surface 5b provided with the convex portion 52 in the end surface 5b of the light shielding member 5.

The light shielding member 5 includes, for example, two recesses 5b11 and 5b11 in a part of the notch 5b1.
The recesses 5b11 and 5b11 have, for example, a shape in which the end surface of the notch 5b1 is recessed in a substantially semicircular shape toward the inside, and are substantially orthogonal to the protruding direction of the protrusions 52 and 52 on the end surface of the notch 5b1. It is provided at two locations on the radial line of the light shielding member 5.
Here, the concave portions 5b11 and 5b11 are, for example, groove portions provided in the cylindrical frame 12 when the convex portions 52 and 52 are engaged with the concave groove portions 122 and 122 provided in the cylindrical frame 12 of the outer frame member 1. 123 and 123 are confronted.

<Assembly method of imaging device>
Next, a method for assembling the imaging device 10 will be described.
First, for example, the rectangular frame 11 of the outer frame member 1 is fixed to the upper surface of the substrate 31 on which the imaging device 3 is mounted (the surface on the side where the imaging device 3 is bonded and connected).
Next, for example, the infrared cut filter 4 is accommodated from the opening 121 included in the outer frame member 1, and the end portion 4 a of the infrared cut filter 4 on the image pickup device 3 side is included in the support portion 13 of the outer frame member 1. It is supported on the upper surface of the optical member support 131.

Next, for example, from the opening 121 of the outer frame member 1, the light shielding member 5 and the convex portions 52 and 52 provided on the light shielding member 5 are recessed groove portions 122 and 122 provided on the cylindrical frame 12 of the outer frame member 1. The end portion 5a of the light shielding member 5 on the image pickup device 3 side is supported on the upper surface of the support portion 13 of the outer frame member 1.
Next, for example, the adhesive G is injected into the grooves 123 and 123 provided in the cylindrical frame 12 of the outer frame member 1 and the recesses 5 b 11 and 5 b 11 provided in the light shielding member 5. Then, the adhesive G reaches the entire cutout portion 5b1 provided in the light shielding member 5. Thereby, the light shielding member 5 is fixed to the outer frame member 1.

Next, the imaging optical system 2 supported by the optical system support 21 is accommodated from the opening 121 of the outer frame member 1, and the outer surface of the optical system support 21 is used as the inner surface of the cylindrical frame 12 of the outer frame member 1. For example, it is fixed on the upper side with an adhesive (not shown).
In this way, the imaging device 10 is assembled.

  According to the imaging apparatus 10 of the present invention described above, the imaging optical system 2 for guiding subject light, the imaging element 3 for photoelectrically converting subject light guided to the imaging optical system 2, the imaging optical system 2, and imaging An infrared cut filter 4 that is arranged between the element 3 and cuts infrared rays from the subject light guided to the imaging optical system 2, and is arranged between the imaging optical system 2 and the infrared cut filter 4. And a light shielding member 5 that shields unnecessary light out of the subject light guided to the imaging element 3 and the surface on the imaging element 3 side of the imaging optical system 2 is the convex surface 2a. 2 can be disposed in a space between the vicinity of the end of the surface on the image pickup device 3 side and the infrared cut filter 4 (a space that has been a dead space). Therefore, the back focus can be shortened as compared with the conventional imaging device in which the light shielding member is disposed between the infrared cut filter and the imaging element, and as a result, the imaging device 10 with higher performance and A mobile phone M provided with a higher-performance imaging device 10 can be provided.

  In addition, the imaging optical system 2, the imaging device 3, the infrared cut filter 4, and the light shielding member 5 are arranged on the inner side, and the outer frame member 1 having an opening 121 for introducing subject light, and the inner frame member 1 protrude from the inner surface. Provided with a transparent member supporting portion 131 that supports the end portion 4a of the infrared cut filter 4 on the image pickup device 3 side, and is therefore supported by the infrared cut filter 4 and the optical system support 21. The system 2 can be assembled from one direction (the direction from the opening 121 toward the image sensor 3). Therefore, for example, the imaging device 10 can be easily assembled as compared with a case where an infrared cut filter is attached to the lower surface side of the outer frame member.

  Further, since the light shielding member 5 is separate from the outer frame member 1, there is no problem in formability as in the conventional imaging device in which the light shielding member and the outer frame member are integrally formed. The member 5 can be formed thinner than the current one, and the inclination angle of the inclined surface 51 a on the upper end surface of the opening 51 provided in the light shielding member 5 can be adjusted. Moreover, since the translucent member support part 131 should just protrude from the inner side of the outer frame member 1 (support part 13) only the length which can support the infrared cut filter 4, the thickness of the translucent member support part 131 is as follows. It can be formed thinner than the thickness of a conventional light shielding member. Therefore, the back focus can be shortened as compared with the conventional imaging device, and as a result, an even higher performance imaging device can be provided.

Further, since the infrared cut filter 4 is sandwiched between the translucent member support portion 131 and the light shielding member 5, even if the infrared cut filter 4 is thin, the infrared cut filter 4 can be securely fixed at a predetermined position, and the imaging apparatus The problem that the image obtained by 10 deteriorates can be solved.
Specifically, for example, in a configuration in which an infrared cut filter such as a conventional imaging device is not sandwiched between a translucent member support portion or the like and a light shielding member or the like, for example, if the infrared cut filter is thin, the infrared cut filter The problem is that the infrared cut filter cannot be securely fixed at a predetermined position due to floating, for example, since it is necessary to fix the infrared cut filter directly in the imaging device with an adhesive, the adhesive on the surface of the translucent member Wraps around and causes problems such as deterioration of an image obtained by the imaging apparatus.
Therefore, when the infrared cut filter 4 is sandwiched between the translucent member support part 131 and the light shielding member 5 as in the imaging device 10 of the present invention, the infrared cut filter 4 is floated and bonded to the surface of the infrared cut filter 4. Since the wraparound of the agent can be prevented, the infrared cut filter 4 can be securely fixed at a predetermined position even when the infrared cut filter 4 is thin, and problems such as deterioration of the image obtained by the imaging device 10 can be solved. it can.

  Further, the outer frame member 1 includes a concave groove portion 122 provided along the optical axis O direction on the inner surface, and the light shielding member 5 includes a convex portion 52 that is engaged with the concave groove portion 122 of the outer frame member 1. Since it is provided, the light shielding member 5 can be reliably positioned.

  Further, the light shielding member 5 includes a cutout portion 5b1 in which a part of the end surface 5b is cut out so that the imaging optical system 2 side opens, and the cutout portion 5b1 can be used as an adhesive reservoir, for example. The light shielding member 5 can be reliably fixed to the outer frame member 1 by the adhesive. Moreover, dripping of the adhesive G becomes easy and workability is improved.

  Further, since the light shielding member 5 is bonded to the outer frame member 1 with the adhesive G, it is possible to prevent dust from entering the image pickup device 3 side.

  Moreover, since the infrared cut filter 4 is used as the translucent member, a high-performance image can be obtained.

The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist thereof.
If the light shielding member 5 is disposed between the imaging optical system 2 and the infrared cut filter 4, for example, the light shielding member 5A is integrated with the outer frame member 1A like the light shielding member 5A of the imaging device 10A shown in FIGS. May be molded. In this case, since the infrared cut filter 4 can be supported by the surface (lower surface) of the light shielding member 5A on the image pickup device 3 side, the translucent member support portion 131 is not necessary, but the opening that the infrared frame filter 1 has in the outer frame member 1A. It cannot be accommodated from the part 121.

  The surface on the image pickup element 3 side of the image pickup optical system 2 may be a concave surface. In this case, since the light shielding member 5 cannot be disposed in a space between the vicinity of the end of the surface of the image pickup optical system 2 on the image pickup element 3 side and the infrared cut filter 4, for example, to shorten the back focus. Needs to be formed thinly.

The outer frame member 1 is provided with the concave groove portion 122 as the concave engaging portion, and the light shielding member 5 is provided with the convex portion 52 as the convex engaged portion. The frame member 1 may be provided with a convex engaging portion, and the light shielding member 5 may be provided with a concave engaged portion.
Two concave grooves 122 and 122 are provided at two locations on the inner surface of the cylindrical frame 12 of the outer frame member 1 on the radial line of the cylindrical frame 12, and two at two locations on the radial line of the light shielding member 5 on the end surface 5 b of the light shielding member 5. Although the convex portions 52 and 52 are provided, the number of the concave groove portions 122 and the convex portions 52 is arbitrary (one or plural) as long as the number of both corresponds, and the concave groove portions 122 and the convex portions 52 The position is arbitrary as long as both positions correspond.
Similarly, the number and position of the groove 123 provided in the cylindrical frame 12 of the outer frame member 1 and the recess 5b11 provided in the notch 5b1 of the light shielding member 5 are also arbitrary.

It is the front view (a) and back view (b) of the mobile telephone (mobile terminal) concerning this invention. It is a perspective view of the imaging device concerning the present invention. It is a top view of the imaging device concerning the present invention. It is a figure which shows the POQ cross section of FIG. It is a figure which shows the XY cross section of FIG. It is a figure which shows the modification of the imaging optical system with which the imaging device concerning this invention was equipped. It is a figure which shows the light-shielding member with which the imaging device concerning this invention was equipped. It is a top view of the modification of the imaging device concerning the present invention. It is a figure which shows the ROS cross section of FIG. It is sectional drawing of the conventional imaging device.

Explanation of symbols

1,1A outer frame member 121 opening 122 concave groove (engagement portion)
131 Translucent member support part 2, 2A Imaging optical system 2a, 2aA Convex surface 3 Imaging element 4 Infrared cut filter (translucent member)
4a end part 5, 5A light shielding member 5b end face 5b1 notch part 52 convex part (engaged part)
10, 10A Imaging device M Mobile phone (mobile terminal)
M1 case body (terminal body)
O Optical axis

Claims (9)

An imaging optical system for guiding subject light;
An image sensor that photoelectrically converts subject light guided to the imaging optical system;
A translucent member disposed between the imaging optical system and the imaging element;
A light shielding member that is disposed between the imaging optical system and the translucent member and shields unnecessary light of the subject light guided to the imaging optical system,
An imaging apparatus, wherein a surface on the imaging element side of the imaging optical system is a convex surface. The imaging device according to claim 1,
An outer frame member having an opening for introducing subject light, wherein the imaging optical system, the imaging element, the translucent member, and the light shielding member are disposed inside;
An imaging apparatus comprising: a translucent member support portion that protrudes from an inner surface of the outer frame member and supports an end portion of the translucent member on the imaging element side. An imaging optical system for guiding subject light;
An image sensor that photoelectrically converts subject light guided to the imaging optical system;
A translucent member disposed between the imaging optical system and the imaging element;
A light shielding member that is disposed between the imaging optical system and the translucent member and shields unnecessary light of the subject light guided to the imaging optical system;
An outer frame member having an opening for introducing subject light, wherein the imaging optical system, the imaging element, the translucent member, and the light shielding member are disposed inside;
An imaging apparatus comprising: a translucent member support portion that protrudes from an inner surface of the outer frame member and supports an end portion of the translucent member on the imaging element side. In the imaging device according to claim 2 or 3,
The imaging device, wherein the translucent member is sandwiched between the translucent member support portion and the light shielding member. In the imaging device according to any one of claims 2 to 4,
The outer frame member includes a concave or convex engagement portion provided along the optical axis direction on the inner surface thereof.
The light shielding member is a convex engaged portion engaged with a concave engaging portion of the outer frame member or a concave engaged member engaged with a convex engaging portion of the outer frame member. An imaging apparatus comprising a joint. In the imaging device according to any one of claims 2 to 5,
The image-capturing device, wherein the light-shielding member includes a cut-out portion in which a part of the end surface is cut out so that the image-capturing optical system side is open. In the imaging device according to any one of claims 2 to 6,
The imaging apparatus, wherein the light shielding member is bonded to the outer frame member. In the imaging device according to any one of claims 1 to 7,
The imaging device, wherein the translucent member is an infrared cut filter that cuts infrared rays from the subject light guided to the imaging optical system.   A portable terminal comprising the imaging device according to any one of claims 1 to 8 in a terminal body.

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