JP2003262908A - Variable magnification type image pickup device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a variable magnification type image pickup device which can be used for an image pickup device such as a cellular phone with a built-in camera. <P>SOLUTION: The foldable cellular phone with a built-in camera 2 includes a lens mount part 6 rotatable in a direction perpendicular to an optical axis, a wide-angle converter 8 or a telephoto converter 10 mounted on the mount part 6, and an image pickup part receiving incident light passing through the converter 8 or 10. By rotating the mount part 6 in the direction perpendicular to the optical axis so that the optical axis of the image pickup part may be aligned with that of the converter 8 or 10, photographic magnification is changed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable magnification type image pickup apparatus capable of changing a photographing magnification.

[0002]

2. Description of the Related Art An image pickup apparatus, particularly a portable image pickup apparatus, for example, an electronic still camera, has conventionally been equipped with a zoom lens for changing a photographing magnification. The zoom lens is composed of a plurality of lenses, and the photographing magnification is changed by changing the distance between the lenses.

[0003]

When a zoom lens is used, there is a problem that a mechanism for changing the distance between the lenses is required, which increases the thickness of the image pickup device. In portable image pickup devices, such as camera-equipped mobile phones, for which there is a great demand for thinning, for this reason, it was difficult to adopt a variable magnification system for the camera built into the mobile phone. In addition,
It is easy to give a zoom function to a camera attached to the outside of a mobile phone, and an example of such a mobile phone with a camera is disclosed in JP-A-2002-50999.

It is an object of the present invention to solve the above-mentioned drawbacks of the prior art and to provide a variable magnification type image pickup apparatus which can be used for an image pickup apparatus such as a mobile phone with a camera.

[0005]

In order to solve the above-mentioned problems, the present invention provides a variable magnification type image pickup device capable of changing a photographing magnification, and a lens mounting portion movable in a direction perpendicular to an optical axis, At least 1 mounted on the lens mount
Includes two lens sections and an image pickup section that receives the incident light that has passed through the lens sections.Move the lens mounting section in the direction perpendicular to the optical axis to match the optical axis of the image pickup section with the optical axis of the lens section. It is characterized by being able to.

According to the present invention, when it is desired to change the magnification, the lens mounting portion is moved in parallel or rotationally in a direction perpendicular to the optical axis so that the optical axis of the image pickup portion and the optical axis of the lens portion are moved. The shooting magnification can be changed to match. Then, the image pickup unit receives the incident light that has passed through the lens unit on the optical axis of the image pickup unit. In the present invention, since the zoom lens is not used, the mechanism for moving the lens unit in the direction parallel to the optical axis is not required, and the image pickup apparatus can be thinned and downsized.

Further, the variable magnification type image pickup device of the present invention is applied to an image pickup device including a main body portion and a lid portion, for example, a foldable mobile phone, and a lens mounting portion is mounted on one of the main body portion and the lid portion to pick up an image. The section can be mounted on the other of the main body section and the lid section, and the lens section can be used in combination with the imaging section. To combine means, for example, to completely fold the lid part so that the optical axis of the lens part and the optical axis of the imaging part coincide with each other.

In this case, since the lens mounting portion does not require a mechanism portion such as a zoom lens, in addition to the effect that the image pickup device is thin, the function of the camera is divided into the lid portion and the body portion. The image pickup apparatus as a whole becomes thinner than the case where the camera function is mounted on only one of the main body section and the lid section.

In the image pickup apparatus, one of the main body section and the lid section on which the image pickup section is mounted includes a single-focus lens section, and the single-focus lens section is combined with the lens section mounted on the lens mounting section. Alternatively, it may be used alone for shooting.

For example, a monofocal lens is used as a standard lens, and a conversion lens for converting the standard lens into a wide-angle lens and a conversion lens for converting the standard lens into a telephoto type lens (telephoto lens) are provided in a lens mounting portion. A wide-angle lens or a telephoto lens can be realized by providing a lens and combining the standard lens and the lens portion mounted on the lens mounting portion. When a single focus lens is used alone, shooting is performed as a standard lens.

By the way, it is preferable to arrange the lens portion in a turret type. That is, a rotating lens mounting portion is provided, and the lens portions are radially arranged on the lens mounting portion.
For example, the lens attachment portion is formed into a substantially disc shape, and is rotatably supported by the image pickup apparatus. Then, for example, at least one lens unit is arranged at the same radius from the center of rotation of the disc, and the lens mounting unit is rotated to switch the lens unit.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a variable magnification type image pickup device according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that illustration and description of portions that are not directly related to the present invention are omitted. INDUSTRIAL APPLICABILITY The present invention can be used in general imaging devices such as electronic still cameras, video cameras, and mobile phones. Hereinafter, a case where the present invention is applied to a folding mobile phone with a camera will be described.

FIG. 1 is a view of a foldable mobile phone 2 with a camera capable of changing the photographing magnification, as viewed from the lid portion 4 side. FIG. 1 (a) shows the case where the lid part 4 is opened, and FIG. 1 (b) shows the case where the lid part 4 is closed. Figure 2
Shows a cross-sectional view of the mobile phone 2 viewed in the AA direction in FIG. 1 (b).

The mobile phone 2 is foldable. Figure 1
As shown in FIG. 2, the lid 4 includes a disc-shaped lens mounting portion 6
However, it is mounted so that it can be rotationally moved in a direction perpendicular to the optical axis. The lens mounting portion 6 includes two lens portions, namely, a wide-angle converter 8 which is a conversion lens for converting a standard lens into a wide-angle lens, and a conversion lens for converting the standard lens into a telephoto type lens (telephoto lens). A teleconverter 10 is installed.

The wide-angle converter 8 and the teleconverter 10 are
They are located on the same circumference centered on the rotation center 18 of the lens mounting portion 6. Wide-angle converter 8 and tele-converter 10
Each is composed of one or a plurality of lenses. The wide-angle converter 8 and the teleconverter 10 have a cylindrical shape, and in the present embodiment, the diameter of the cylinder is the same.

As shown in FIG. 2, the main body portion 12 includes a single-focus lens portion 14. The single-focus lens unit 14 is used for shooting in combination with the wide-angle converter 8 and the teleconverter 10 mounted on the lens mounting unit 6 or independently. That is, the monofocal lens 14 is a standard lens, and the monofocal lens 14 and the lens portions 8 and 10 mounted on the lens mounting portion 6 can be combined to realize a wide-angle lens or a telephoto lens. When the single focus lens 14 is used alone, shooting is performed using a standard lens.

Wide-angle converter 8 or teleconverter 10
When using, the mobile phone 2 is completely folded as shown in FIG. 2 and the lens mounting portion 6 is rotated so that the optical axis of the wide-angle converter 8 or the teleconverter 10 and the optical axis of the single-focus lens 14 coincide with each other. . The image pickup unit 16 is provided on the optical axis of the monofocal lens 14. The image pickup unit 16 is an image pickup device, for example, a CC.
It is composed of a D (Charge Coupled Device) type image pickup device and a MOS (Metal Oxide Semiconductor) type image pickup device. The imaging unit 16 photoelectrically converts incident light into an electric signal.

When the single-focus lens 14 is used alone, the lid 4 is opened and the single-focus lens 14 alone is used for photographing.

Returning to FIG. 1, the lens mounting portion 6 has a barrier (lid) at the intermediate position between the wide-angle converter 8 and the teleconverter 10 on the circumference where the wide-angle converter 8 and the teleconverter 10 are arranged. 20 are provided. Barrier 20
As shown in FIG. 1 (a), when the lens units 8 and 10 are not used, the lens units 8 and 10 are placed in a position corresponding to the optical axis of the single-focus lens 14 so that the lens units 8 and 10 are disposed inside the lid unit 4. Hidden in
The purpose is to protect the lens parts 8 and 10. Barrier 20
However, when it is in the position shown in FIG. 1 (a), it will be referred to as "the lens mounting portion 6 is in the closed position" hereinafter.

The lens mounting portion 6 has a disk shape, and the rotary shaft 50 of the lens mounting portion 6 is inserted into the shaft supporting portion 52 of the lid portion 4 (see FIG. 2). From the state shown in FIG. 1A, the lens mounting portion 6 can rotate clockwise and counterclockwise up to 90 degrees in a plane perpendicular to the optical axis of the imaging unit 16. The rotation angle is limited, for example, by engaging stoppers (not shown) provided on the lens mounting portion 6 and the lid portion 4 side, respectively.

When the lens mounting portion 6 is rotated clockwise by 90 degrees, the wide-angle converter 8 comes on the optical axis of the single-focus lens 14 to enable wide-angle photography. When it is rotated 90 degrees counterclockwise, the state shown in FIG. 1 (b) is reached, and the teleconverter 10 comes on the optical axis of the single-focus lens 14 to enable telephoto photography. Below, the arrangement rotated 90 degrees clockwise or counterclockwise is referred to as a variable imaging arrangement. The lens mounting portion 6 is the lid portion 4
The user rotates the outer peripheral portion 22 exposed to the outside by rotating the outer peripheral portion 22. The lens mounting portion 6 can also be rotated by using a motor or the like.

In this embodiment, when the lens mounting portion 6 is rotated and the variable photographing arrangement is adopted, the wide-angle converter 8 or the teleconverter 10 is fixed at this position so that the optical axis of the wide-angle converter 8 or the teleconverter 10 is changed. , Single focus lens
A fixing means is provided to prevent the optical axis of 14 from shifting. This will be described next.

The engaging portion 2 is provided on the outer periphery of the lens mounting portion 6 so that the wide-angle converter 8 and the tele-converter 10 correspond to certain positions.
Provide 4, 26. The engaging portions 24 and 26 are recesses, and the leaf springs 28
The shape is such that it can be engaged with the convex portion 30. The engaging portions 24 and 26 are convex portions when the lens mounting portion 6 is rotated to the variable photographing arrangement.
Engage with 30. The leaf spring 28 is attached to the spring support portion 32. The spring support portion 32 also has a function of urging the leaf spring 28 when the lens attachment portion 6 is in the variable photographing arrangement.
This function will be described.

As shown in FIG. 1, the spring support portion 32 has an L shape and is attached to the lid portion 4 via a rotary shaft 34. Therefore, the spring support portion 32 is rotatable with respect to the lid portion 4 in the plane of FIG. Also, spring support
The tip portion 36 of the 32 is fixed by the cam portion 38 of the rotary shaft 37 to the leaf spring
Has been pushed towards. The rotary shaft 37 rotatably connects the lid portion 4 and the main body portion 12 of the mobile phone 2.

In the cam portion 38 of the rotary shaft 37, the lid portion 4
When the spring is open (Fig. 1 (a)), the tip 36 of the spring support 32 is
When the lid 4 is closed (FIG. 1 (b)), the thickness of the portion of the spring support portion 32 that abuts on the distal end portion 36 is made larger than the thickness of the portion that abuts on. As a result, the cam 38 pushes the spring support 32 towards the lens mount 6 when the lid 4 is closed. As a result, the leaf spring 28 is biased to securely fix the wide-angle converter 8 and the teleconverter 10 in the variable photographing arrangement. In this state, the user can switch the wide-angle converter 8 and the teleconverter 10 by rotating the outer peripheral portion 22, that is, the lens mounting portion 6.
The spring force of leaf spring 28 is adjusted to allow this.

A spring 40 is provided to hold the lens mount 6 in the closed position when the lid 4 is open. The spring 40 has one end 42 attached to the lid portion 4 near the rotary shaft 37, and the other end 44 attached to the lens attachment portion 6 on the opposite side of the barrier 20. Since the spring 40 is attached in this way, when the lens mounting portion 6 is in the variable photographing arrangement (FIG. 1 (b)), the spring 40 tries to return the lens mounting portion 6 to the closed position. When the lens mounting portion 6 is in the closed position (FIG. 1A), the lens mounting portion 6 is stably held in this position by the spring 40.

Next, the processing of the electric signal obtained by the image pickup section 16 will be described with reference to FIG. The electric signal obtained by the imaging unit 16 is a gamma correction that performs color correction by a signal processing unit (not shown) arranged in the main body unit 12,
AWB (Automatic) that automatically adjusts the white balance
White balance) processing, matrix processing for generating predetermined color data, and the like are performed. The pixel data obtained by the processing is stored in the pixel data recording unit (not shown) in the main body unit 12.
Sent to. Further, it is sent to the liquid crystal monitor 46 for displaying on the liquid crystal monitor 46 attached to the main body 12.
The liquid crystal monitor 46 is displayed at the same time as the image is taken, and functions as a finder in a silver halide camera. The liquid crystal monitor 46 is small in this embodiment. In order to display various information of the mobile phone 2,
A larger liquid crystal display section 48 is provided on the lid section 4.
After shooting, open the lid 4 to open the large LCD display 48
The captured image can be displayed on the screen to reconfirm the image.

According to the present embodiment, when it is desired to change the magnification, the lens mounting portion is rotationally moved in a direction perpendicular to the optical axis so that the optical axis of the image pickup section and the optical axis of the lens section coincide with each other, The shooting magnification can be changed. In the present embodiment, since the zoom lens is not used, the mechanism for moving the lens unit in the direction parallel to the optical axis is not required, and the image pickup apparatus can be thinned and downsized.

In this embodiment, since the lens mounting portion does not require a mechanism portion such as a zoom lens, in addition to the effect that the image pickup device is thin, the function of the camera is divided into the lid portion and the body portion. Therefore, the entire image pickup apparatus becomes thinner than the case where the camera function is installed only in the main body.

Next, another embodiment of the present invention will be described with reference to FIGS. In the following description, components having the same functions as those of the constituent elements of the embodiment shown in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be partially omitted.

This embodiment is the same as the above embodiment in that the lens portion is arranged in a turret type. The main difference from the above embodiment is the method of holding the lens mount in the variable shooting arrangement. In this embodiment, the lens mounting portion is held at a predetermined position by using the spring provided at the center of rotation of the lens mounting portion and the groove provided on the outer peripheral portion of the lens mounting portion.
Details will be described later.

FIG. 3 is a view of the foldable mobile phone 54 with a camera capable of changing the photographing magnification, as viewed from the lid portion 56 side. FIG. 4 shows a cross-sectional view of the mobile phone 54 taken along the BB direction in FIG. However, by rotating the lens mount 58,
1 shows a state in which the optical axis of the teleconverter 10 is aligned with the optical axis of the image pickup section 16. FIG. 4 (a) shows the case where the lid 56 is opened, and FIG. 4 (b) shows the case where the lid 56 is closed. Figure 4
In (a), the main body 62 is omitted.

As shown in FIG. 3, a substantially fan-shaped lens attachment portion 58 is attached to the lid portion 56 so as to be rotatable and movable in a direction perpendicular to the optical axis. 2 for lens mount 58
A lens unit, a wide-angle converter 8 and a teleconverter 10 are mounted.

The wide-angle converter 8 and the teleconverter 10 are
They are located on the same circumference with the center of rotation 60 of the lens mounting portion 58 as the center. Wide-angle converter 8 and tele-converter 10
Each is composed of one or a plurality of lenses. The wide-angle converter 8 and the teleconverter 10 have a cylindrical shape, and in this embodiment, these cylinders have the same diameter.

As shown in FIG. 4 (b), the main body portion 62 includes the single focus lens portion 14 which is a standard lens. Single focus lens section 14
Is used for photographing in combination with the wide-angle converter 8 and the teleconverter 10 mounted on the lens mounting portion 58, or alone. That is, by combining the monofocal lens 14 and the lens portions 8 and 10 mounted on the lens mounting portion 58,
A wide-angle lens or a telephoto lens can be realized.
When the single focus lens 14 is used alone, shooting is performed using a standard lens.

Wide-angle converter 8 or teleconverter 10
4B, the mobile phone 54 is folded and the lens mounting portion 58 is rotated to align the optical axis of the wide-angle converter 8 or the teleconverter 10 with the optical axis of the single-focus lens 14 as shown in FIG. 4B. Let An imaging unit 16 is provided on the optical axis of the monofocal lens 14. When using the single focus lens 14 alone, the lid
Open 56 and shoot with the single focus lens 14 only.

Returning to FIG. 3, the lens mounting portion 58 is provided with the barrier 20 at the intermediate position between the wide-angle converter 8 and the teleconverter 10 on the circumference where the wide-angle converter 8 and the teleconverter 10 are arranged. Has been. As shown in FIG. 3, the barrier 20 is placed at a position that coincides with the optical axis of the single focus lens 14 when the lens portions 8 and 10 are not used, so that the lens portions 8 and 10 are placed inside the lid portion 56. Hidden, lens part 8,
It is for protecting 10. When the barrier 20 is in the position shown in FIG. 3, "the lens mount 58 is in the closed position".
Will be called below.

The lens mounting portion 58 has a fan shape and can rotate clockwise and counterclockwise up to an angle α in a plane perpendicular to the optical axis of the image pickup portion 16 from the state shown in FIG. When the angle α is rotated clockwise by α degrees, the wide-angle converter 8 reaches the position of the barrier 20 in FIG. 3, that is, the single focus lens.
The angle is such that wide-angle shooting can be performed on the optical axis of 14, and when rotated counterclockwise by α degrees, the teleconverter 10 is on the optical axis of the single-focus lens 14 and is an angle at which telephoto shooting can be performed. . Hereinafter, the arrangement rotated by α degrees in the clockwise direction or the counterclockwise direction is referred to as a variable photographing arrangement.

The lens mounting portion 58 is rotated by the user rotating the outer peripheral portion 64 exposed to the outside of the lid portion 56.
In this embodiment, when the lens mounting portion 58 is rotated and the variable photographing arrangement is set, the wide-angle converter 8 or the teleconverter 10 is fixed at this position, and the optical axis of the wide-angle converter 8 or the teleconverter 10 and the single focal point are fixed. Fixing means is provided to prevent the optical axis of the lens 14 from being displaced. This will be described next.

Three grooves 66 are provided on the outer periphery of the lens mounting portion 58 in correspondence with the positions of the wide-angle converter 8, the teleconverter 10 and the barrier 20. The groove 66 is a recess, and the lid
The shape is such that it can engage with the convex portion 68 provided on 56. Convex portion 68
Is attached to the lid portion 56 via a spring 80. Groove 66
Engages with the convex portion 68 when the lens attachment portion 58 is in the “variable shooting arrangement” or the “closed position”, and the wide-angle converter 8
The teleconverter 10 and the barrier 20 are held at predetermined positions in the circumferential direction (direction perpendicular to the optical axis).

When the groove 66 is engaged with the convex portion 68, the lens mounting portion 58 is held in the correct position in the optical axis direction as shown in FIG. The periphery of the rotation center of 58 is pressed against the main body 62 side by the spring 70.
This will be described.

The rotary shaft 72 of the lens mounting portion 58 is inserted into a bearing 74 provided on the lid portion 56. A spring 70 is provided on the outer periphery of the bearing 74, and pushes the lens mounting portion 58 toward the main body portion 62 (to the right in the drawing). As shown in FIG. 4 (a), when the lid 56 is open, the lens mount 58
Since the lens mounting portion 58 is pushed to the right by the spring 70, the protruding portion 76 protrudes from the surface of the lid portion 56.
However, since the stopper 78 is provided on the upper portion of the lid portion 56, the lens attaching portion 58 stops at the position where the upper portion of the lens attaching portion 58 hits the stopper 78.

As shown in FIG. 4 (b), when the lid portion 56 is closed, the protrusion portion 76 of the lens mounting portion 58 is pushed back to the left by the main body portion 62 by a predetermined amount and stops at that position. . In this way, when the lid portion 56 is open and when the lid portion 56 is closed, the lens attachment portion 58 is fixed at a predetermined position in the optical axis direction. In this state, the user turns the outer peripheral portion 64, that is, the lens mounting portion.
It is possible to turn 58 to switch between wide-angle converter 8, teleconverter 10 and barrier 20. Lens mount
This is because when the user rotates 58, the convex portion 68 is supported by the spring 80, so that the convex portion 68 moves leftward and the engagement between the groove 66 and the convex portion 68 is released. The force of spring 80 is adjusted to allow this.

The projection 76 of the lens mount 58 can be used to detect the opening / closing of the lid 56. Usually, in a foldable mobile phone, a protrusion for detecting the opening / closing of the lid 56 and starting a process such as turning on the backlight of the liquid crystal monitor 48 is provided on the lid or the main body. The protrusion 76 of the lens mounting portion 58 can perform this function. For example, the opening / closing of the lid portion 56 can be detected by providing a switch on the portion of the main body portion 62 that abuts the protrusion portion 76 of the lens attachment portion 58.

Since the method of processing the electric signal obtained by the image pickup section 16 is the same as that of the embodiment shown in FIGS. 1 and 2, its explanation is omitted.

According to this embodiment, since the zoom lens is not used, a mechanism for moving the lens section in the direction parallel to the optical axis is not required, and the image pickup apparatus can be made thin and compact. . Further, in this embodiment, since the function of the camera is divided into the lid portion and the main body portion, the entire image pickup apparatus becomes thinner than the case where the camera function is mounted only in the main body portion.

Although different from the above-mentioned embodiment, in the folding type image pickup apparatus, even when the rotatable lens mounting portion mounting the wide-angle converter or the teleconverter as described above is not used, that is, the magnification of the single-focus lens. Even in the case of a fixed camera, the image pickup device can be made thin. That is, the function of the camera section is divided into the lid section and the main body section of the image pickup apparatus, and the lens system is provided on one side, for example, the lid section, and the image pickup section is provided on the other side, for example, the main body section, so that it is possible to reduce the thickness.

Further, in this case, as a method of allocating the functions of the camera section, other than this, for example, a lens system may be provided in the lid section and the lens system and the image pickup section may be provided in the main body section. Furthermore, it is also possible to reverse the allocation of the camera function to the lid portion and the main body portion, which is the reverse of the above. In either case, by dividing the function of the camera unit into the lid unit and the main body unit, it is possible to reduce the thickness of the entire imaging device such as a mobile phone.

[0049]

As described above, according to the present invention, since a zoom lens is not used, a mechanism for moving the lens unit in a direction parallel to the optical axis is not required, and the image pickup apparatus can be made thin and compact. Is possible. Further, since the function of the camera is divided into the lid portion and the main body portion, the entire image pickup apparatus becomes thinner than the case where the camera function is mounted only in the main body portion.

[Brief description of drawings]

FIG. 1 is a view of a foldable mobile phone with a camera according to an embodiment of the present invention when the mobile phone is viewed from a lid portion side when the foldable mobile phone is folded.

FIG. 2 is a cross-sectional view of the mobile phone as viewed in the AA direction of FIG. 1 (b).

FIG. 3 is a view of the mobile phone viewed from the lid side when the camera-equipped foldable mobile phone according to another embodiment of the present invention is folded.

FIG. 4 is a cross-sectional view of the mobile phone taken along the line BB in FIG.

[Explanation of symbols]

2 mobile phones 4, 56 Lid 6, 58 Lens mount 8 Wide-angle converter 10 Tele converter 12, 62 Main body 20 barrier 24, 26 Engagement part 28 leaf spring 30 convex 32 spring support 37 rotation axis

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04Q 7/32 H04N 101: 00 // H04N 101: 00 H04B 7/26 VF term (reference) 2H044 BF01 DA00 DB01 2H101 BB00 BB12 DD04 DD10 FF01 FF05 5C022 AA13 AB11 AC42 AC54 AC78 5K067 AA34 BB04 BB21 DD52 EE02 FF02 FF23 KK17

Claims (3)

[Claims] 1. A lens mounting part movable in a direction perpendicular to an optical axis, at least one lens part mounted on the lens mounting part, and an imaging part for receiving incident light passing through the lens part. It is possible to change the photographing magnification, which is characterized in that the optical axis of the image pickup section and the optical axis of the lens section can be aligned by moving the lens mounting section in a direction perpendicular to the optical axis. Variable magnification imaging device. 2. The variable magnification imaging device according to claim 1, wherein the device includes a main body portion and a lid portion, and the lens mounting portion is mounted on one of the main body portion and the lid portion. An image pickup unit is mounted on the other of the main body unit and the lid unit, and the lens unit is used in combination with the image pickup unit. 3. The variable-magnification image pickup apparatus according to claim 2, wherein one of the main body section and the lid section on which the image pickup section is mounted includes a single-focus lens section, and the single-focus lens section includes the single-focus lens section. A variable-magnification image pickup device, which is used for photographing in combination with a lens portion mounted on a lens mounting portion or alone.