JP2005167876A - Folding type portable digital terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding type portable digital terminal device which can prevent a light from being invaded into a synthetic optical system and which can prevent an optical axis from being deviated. <P>SOLUTION: The folding type portable digital terminal device includes a first housing for storing a first optical system, and a second housing for storing a second optical system and rotatably coupling to the first housing in such a manner that the one housing is rotated and folded so that the first housing is brought into contact with the second housing and the optical axis of the first optical system is brought into coincidence with the optical axis of the second optical system to constitute the synthetic optical system. The portable digital terminal device further includes a shielding mechanism for shielding the light invaded into the synthetic optical system from the contact part of the first housing with the second housing in the state that the two housing are folded. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a foldable portable information terminal device among portable information terminal devices such as a mobile phone and a PDA (Personal digital assistant).

  In recent years, with the background of downsizing and low power consumption of imaging devices, improvement in processing capacity of electronic devices, increase in memory capacity, and further increase in communication infrastructure speed and capacity (broadbanding), cellular phones, PDAs, Many portable information terminal devices such as handheld PCs (personal computers) have been developed that incorporate a camera function using a small imaging module such as a CMOS image sensor.

In addition, because of the ease of use and compactness, there is an increasing demand for a foldable mobile phone that can fold two cases that are pivotally connected, and the development of a foldable mobile phone having a camera function is also progressing. (For example, refer to Patent Document 1).
In the invention of Patent Document 1, an imaging module including a lens, an imaging element, and the like is disposed on the casing side of the mobile phone, and an adapter optical system (teleconverter or wide converter) is disposed on the lid member side of the cellular phone. The present invention relates to a technique for constructing a composite optical system including a lens and an adapter optical system by matching the optical axis of the lens and the optical axis of the adapter optical system in a state where the telephone is folded.
By using such a synthetic optical system, it is possible to achieve the zooming function by securing the length of the optical system in the optical axis direction, and to achieve multifocalization.
JP 2003-69868 A

  However, in the invention disclosed in Patent Document 1, the problem that light passing through the gap between the housing and the lid member in a state in which the cellular phone is folded enters the synthetic optical system and causes deterioration of the image quality, or the lens. There is also a problem that the optical axis of the adapter and the optical axis of the adapter optical system are likely to shift.

  An object of the present invention is to provide a foldable portable information terminal device that takes the above-mentioned problems into consideration and prevents the intrusion of light into the combining optical system and prevents the optical axis from shifting.

In order to solve the above-described problems, the invention described in claim 1 includes a first housing for storing the first optical system, a second optical system, and the first housing. A second housing that is movably connected, and one housing is rotated and folded so that the first housing and the second housing are in contact with each other, and the first housing is folded. In a foldable portable information terminal device in which a composite optical system is configured by matching an optical axis of an optical system with an optical axis of the second optical system, the first casing is folded in the first casing. It is characterized by comprising a blocking mechanism for blocking light that enters the synthetic optical system from a contact portion between the casing and the second casing.
According to the first aspect of the present invention, the image forming apparatus includes the blocking mechanism that blocks the light that enters the combining optical system from the contact portion between the first casing and the second casing in the folded state. Can be prevented in advance.

According to a second aspect of the present invention, in the foldable portable information terminal device according to the first aspect, the blocking mechanism is arranged around the optical system stored in one of the two cases. A convex portion formed on the surface of the one housing so as to cover; and a concave portion formed on the surface of the other housing so as to cover the periphery of the optical system stored in the other housing. The convex portion and the concave portion are fitted in a state where the two casings are folded.
According to the second aspect of the present invention, since the convex portion and the concave portion are fitted, the lid member can be accurately positioned with respect to the main body, and the optical axis of the first optical system and the second optical The optical axis shift of the system can be prevented.
Further, since the shut-off mechanism does not require an electric drive means such as a motor, for example, the manufacturing cost of the foldable portable information terminal device can be suppressed.

  According to a third aspect of the present invention, in the foldable portable information terminal device according to the first aspect, when the blocking mechanism opens the two casings, one casing of the two casings is provided. In the state where the periphery of the optical system stored in the body is covered and stored in the one case, and in the state where the two cases are folded, from the inside of the one case to the inside of the other case It has a cylindrical member that extends and covers the periphery of the optical system stored in the other casing.

According to a fourth aspect of the present invention, in the foldable portable information terminal device according to the third aspect of the present invention, the blocking mechanism is stored in the other casing, and the two casings are folded in the cylindrical shape. It has the movement control member which controls the movement of a member, It is characterized by the above-mentioned.
According to the fourth aspect of the present invention, the lid member can be accurately positioned with respect to the main body by the movement restricting member, and the deviation between the optical axis of the first optical system and the optical axis of the second optical system is prevented. Can be prevented.

  According to the present invention, it is possible to obtain a foldable portable information terminal device that can prevent light from entering the combining optical system and prevent optical axis deviation.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a diagram showing an appearance of a foldable mobile phone P (hereinafter simply referred to as “mobile phone”) as a foldable mobile information terminal device having a camera function.

  The cellular phone P includes a lid member 1 (first housing), and a main body 2 (second housing) coupled to the lid member 1 so as to be foldable as indicated by a bidirectional arrow in the figure. The lid member 1 and the main body 2 are connected to each other via a rotation shaft 3 so as to be rotatable.

An imaging module 4, operation keys 5, a microphone 6 and the like are attached to the main body 2 on the side that becomes the inner surface when folded.
FIG. 2 is a longitudinal sectional view showing a state in which the cellular phone P is folded.
As shown in FIG. 2, the imaging module 4 is roughly configured by an imaging element 7 such as a CMOS sensor or a CCD, a second optical system 8, a cover glass 9, and the like, and has optical characteristics for far-point imaging.
Then, with the mobile phone P open, the user can take an image of himself / herself with the imaging module 4 facing the operator himself / herself, or can take a snap shot of a landscape or a person around the photographer. The captured image can be stored in the memory in the mobile phone P and displayed on the display unit 10, or attached to an electronic mail and transmitted to another electronic device.

The lid member 1 includes an LCD, an EL (Electro-Luminescence) panel, and the like on the inner side when folded, a display unit 10 for displaying user interface information such as a telephone directory and operation menu display, and an adapter optical system 11, a speaker 12, an antenna 13, and the like are attached.
The adapter optical system 11 includes a first optical system 14 and cover glasses 15a and 15b on the inner and rear surfaces. The adapter optical system 11 is arranged so that the optical axis L1 of the first optical system 14 substantially coincides with the optical axis L2 of the second optical system 8 when folded.
That is, the light incident on the adapter optical system 11 from the cover glass 15b on the back side of the lid member 1 in the folded state passes through the first optical system 14, the two cover glasses 15a and 9, and the second optical system 8 in order. By adopting a configuration that passes through and reaches the image sensor 7, a composite optical system composed of the first optical system 14 and the second optical system 8 is configured to have optical characteristics for near-point imaging. ing.

Further, the cellular phone P includes a blocking mechanism 20 for blocking light that enters the combining optical system from the contact portion between the lid member 1 and the main body 2 in a folded state.
The blocking mechanism 20 covers the projection 21 protruding from the surface of the lid member 1 so as to cover the periphery of the adapter optical system 11 stored in the lid member 1 and the periphery of the imaging module 4 stored in the main body 2. A concave portion 22 formed on the surface of the main body 2 is provided, and the convex portion 21 and the concave portion 22 are fitted in a state in which the cellular phone P is folded.

As described above, according to the present embodiment, the light passing through the gap between the main body 2 and the lid member 1 is synthesized even when performing near-point imaging using the synthesis optical system with the cellular phone P folded. The projection 21 that covers the periphery of the optical system can be blocked, and deterioration in image quality can be prevented.
In addition, since the convex portion 21 and the concave portion 22 are fitted, the lid member 1 can be accurately positioned with respect to the main body 2, and the optical axis L <b> 1 of the first optical system 14 and the second optical system 8. Deviation from the optical axis L2 can also be prevented.

Further, for example, in a folded state, the cover glass 9 of the imaging module 4 and the cover glass 15a on the inner surface of the adapter optical system 11 are respectively slid to move the first optical system 14 into the imaging module 4. If the second optical system 8 is configured to be movable into the adapter optical system 11, the amount of change in the length of the combining optical system in the optical axis direction can be increased, and the optical performance can be improved. it can.
The adapter optical system 11 may be, for example, a mirror that bends the optical path by 90 ° without having refractive power, an optical prism, an optical filter such as an infrared cut filter, a diaphragm, or the like.
Further, the convex portion 21 may be provided on the main body 2 and the concave portion 22 may be provided on the lid member 1. Further, the adapter optical system 11 may be provided on the main body 2 and the imaging module 4 may be provided on the lid member 1.
In the present embodiment, the cellular phone P has the optical characteristics for far-point imaging with the cellular phone P opened, and has the optical characteristics for near-point imaging in the folded state. Imaging may not be possible when the mobile phone P is opened, and imaging may be possible by folding.

[Second Embodiment]
Next, a second embodiment of the present invention will be described, but the same reference numerals are given to portions having the same configuration as in the first embodiment, and the description will be omitted.
The present embodiment is characterized in that the blocking mechanism 30 includes a cylindrical member 31.
As shown in FIG. 3A, the cylindrical member 31 is stored in the main body 2 so as to cover the periphery of the second optical system 8, and as shown in FIG. By moving so that the front end portion 31 a protrudes from the surface of the main body 2, the front end portion 31 a extends to the inside of the lid member 1 and covers the periphery of the first optical system 14 stored in the lid member 1. It is like that.

3B shows a state in which the cover glass 9 of the imaging module 4 and the cover glass 15a on the inner surface of the adapter optical system 11 are slid, but the cover glasses 9 and 15a are not slid. In addition, a configuration may be provided in which openings for inserting the cylindrical member 31 are provided in part of the cover glasses 9 and 15a.
The lid member 1 is attached with a movement regulating member 32 that regulates the movement of the cylindrical member 31 by fitting with the distal end portion 31 a of the cylindrical member 31 extending inside the lid member 1.

Even in the configuration shown in the present embodiment, the light that has passed through the gap between the main body 2 and the lid member 1 can be blocked by the cylindrical member 31, and deterioration in image quality can be prevented in advance.
Further, the tubular member 31 and the movement restricting member 32 are fitted to each other, so that the lid member 1 can be accurately positioned with respect to the main body 2, and the optical axis L <b> 1 of the first optical system 14 and the second optical system 14. Deviation from the optical axis L2 of the optical system 8 can also be prevented.
In addition, as shown in FIG. 4, it is good also as a structure which makes the cylindrical member 31 and the movement control member 32 fit using helicoid 33a, 33b. 4A shows a state before photographing, and FIG. 4B shows a state during photographing.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. The same reference numerals are given to portions having the same configurations as those of the first and second embodiments, and description thereof will be omitted.
As shown in FIG. 5A, the blocking mechanism 40 of the present embodiment is attached to the distal end portion 41 a of the cylindrical member 41 so that the cover glass 9 of the imaging module 4 moves integrally with the cylindrical member 41. In addition, the cover glass 15a on the inner surface of the adapter optical system 11 is urged from the inside of the lid member 1 toward the surface using an elastic member 42 such as a spring.
Although detailed description will be given later, a first stopper 43 is interposed between the elastic member 42 and the cover glass 15a, and a second stopper 44 is provided in the vicinity of the elastic member 42. A cylindrical movement restricting member 45 is provided so as to cover the periphery of the elastic member 42.

Then, as shown in FIG. 5B, when the cylindrical member 41 starts moving at the time of shooting, the cover glass 9 of the imaging module 4 also moves together with the cylindrical member 41. Then, the cover glass 15 a on the inner surface of the adapter optical system 11 is pressed by the cover glass 9 of the imaging module 4 to move into the lid member 1, and the first stopper 43 comes into contact with the second stopper 44. At the time, the tubular member 41 stops.
In this state, the outer peripheral surface of the cylindrical member 41 is in contact with the inner peripheral surface of the movement restricting member 45.

Even with such a configuration, the light that has passed through the gap between the main body 2 and the lid member 1 can be blocked by the cylindrical member 41, and deterioration in image quality can be prevented beforehand.
Further, since the outer peripheral surface of the cylindrical member 41 is in contact with the inner peripheral surface of the movement restricting member 45, the lid member 1 can be accurately positioned with respect to the main body 2, and the optical axis of the first optical system 14. Deviation between L1 and the optical axis L2 of the second optical system 8 can also be prevented.

It is a perspective view which shows the external appearance of a mobile telephone. It is a principal part longitudinal cross-sectional view which shows the structure of a mobile telephone. It is a principal part longitudinal cross-sectional view which shows the structure of a mobile telephone. It is a principal part longitudinal cross-sectional view which shows the structure of a mobile telephone. It is a principal part longitudinal cross-sectional view which shows the structure of a mobile telephone.

Explanation of symbols

P Mobile phone 1 Lid member 2 Main body 3 Rotating shaft 4 Imaging module 7 Imaging element 8 Second optical system 11 Adapter optical system 14 First optical system 20 Blocking mechanism 21 Convex part 22 Concave part 30 Blocking mechanism 31 Cylindrical member 32 Movement restriction member 40 Blocking mechanism 41 Cylindrical member 42 Elastic member 45 Movement restriction member

Claims (4)

A first casing that stores the first optical system; and a second casing that stores the second optical system and is rotatably connected to the first casing. One housing is rotated and folded so that the first housing and the second housing come into contact with each other, and the optical axis of the first optical system and the optical axis of the second optical system coincide with each other. In the foldable portable information terminal device in which the combining optical system is configured by
And a blocking mechanism for blocking light entering the synthetic optical system from a contact portion between the first casing and the second casing in a state where the two casings are folded. Folding portable information terminal equipment. The foldable portable information terminal device according to claim 1,
The blocking mechanism has a convex portion formed on the surface of the one casing so as to cover the periphery of the optical system stored in one of the two casings, and the other casing. A concave portion formed on the surface of the other housing so as to cover the periphery of the stored optical system,
The foldable portable information terminal device, wherein the convex portion and the concave portion are fitted in a state in which the two casings are folded. The foldable portable information terminal device according to claim 1,
In the state where the two cases are opened, the blocking mechanism covers the periphery of the optical system stored in one of the two cases and is stored in the one case. In the folded state of the two housings, a cylindrical shape that covers the periphery of the optical system stored in the other housing by extending from the inside of the one housing to the inside of the other housing A foldable portable information terminal device comprising a member. In the foldable portable information terminal device according to claim 3,
The folding portable information terminal device, wherein the blocking mechanism includes a movement restricting member that is housed in the other housing and restricts the movement of the cylindrical member in a state where the two housings are folded.

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