JP2014036319A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent even during projection a foreign matter from entering the inside of a camera from the outside.SOLUTION: A digital camera 1 has in a rear cover 12 of a camera case 10 an opening window 12a, and comprises: a lid member 29 for switching the opening window 12a between a light-shielding state and an opening state; a transparent protective panel 28 for dust protection which is provided between an imaging device 24 and the opening window 12a; a movable monitor unit 30; and an image processor. During imaging, the opening window 12a is switched into the light-shielding state, and the imaging device 24 is disposed at an imaging position. During projection, the opening window 12a is switched into the opening state, and the imaging device 24 is disposed at a retreated position, and a display panel 32 of the monitor unit 30 is opposed to the opening window 12a such that a display image reduced and inverted upside down by the image processor is displayed on the display surface of the display panel 32.

Description

  The present invention relates to an electronic device capable of both shooting and projection.

  There is known a digital camera having a so-called shooting mode and projection mode that can project not only shooting but also a shot image reproduced and displayed on a liquid crystal panel. In this type of digital camera, the image formed by the photographing lens is picked up by the CCD in the photographing mode, and in the projection mode, the CCD is moved away from the photographing position, and the liquid crystal panel is moved to the recess on the rear surface of the camera for photographing. The image on the liquid crystal panel is projected through the lens. When not in the projection mode, a light shielding cap is attached to the recess in order to prevent unnecessary external light from entering the CCD, and during the projection mode, the light shielding cap is not attached (see, for example, Patent Document 1).

JP 2005-203953 A

  In the digital camera disclosed in Patent Literature 1, unnecessary external light is prevented from being incident by attaching a light shielding cap to the concave portion except in the projection mode. However, the light shielding cap is not attached in the projection mode. There is a risk of foreign matter such as dust entering the camera.

  An electronic apparatus according to a first aspect of the present invention moves between an optical system, a photographing position located at a predetermined focal plane of the optical system, and a retracted position retracted from the photographing position, and an object image from the optical system. A camera body having a back cover, an opening window formed in a portion of the back cover facing the imaging device at the shooting position, and a light shielding state and an open state of the opening window. A light-shielding member that switches between the image sensor and the opening window, a dust-proof transparent protective panel, a storage position of the camera body with the display surface facing the opening window, and the display surface A movable display device attached to be movable between an open position exposed to the outside, and at the time of photographing, the opening window is in the light shielding state, and the imaging element is in the photographing position, At the time of projection, Kuchimado is in the open state, the imaging device is in the retracted position, wherein the display device is in the storage position, and displaying a display image of the display surface on the display surface.

  According to the electronic apparatus of the present invention, since the dust-proof transparent protective panel is provided between the image sensor and the opening window, it is possible to prevent foreign matters such as dust from entering the camera from the outside even during projection. it can.

1A and 1B are perspective views schematically showing an external appearance of a digital camera according to an embodiment of the present invention, in which FIG. 1A is a view seen from the front of the camera, and FIG. 1B is a view seen from the rear of the camera. It is a figure. FIG. 2A is a perspective view schematically showing an external appearance of a digital camera according to an embodiment when projected, FIG. 2A is a view seen from the front of the camera, and FIG. 2B is a view seen from the rear of the camera. is there. It is sectional drawing which looked at the inside of the digital camera shown in FIG. 1 along arrow II and II-II. FIG. 4A is a rear view illustrating movement of an image sensor of the digital camera according to the embodiment, and FIG. 4A is a first example, and FIG. 4B is a second example. It is sectional drawing which looked at the inside of the digital camera shown in FIG. 2 along arrow III-III. It is a disassembled perspective view which shows arrangement | positioning of the component at the time of the projection of the digital camera which concerns on embodiment. FIG. 7A is an example of an image displayed on the monitor unit of the digital camera according to the embodiment, FIG. 7A shows an original image, and FIG. 7B shows an image displayed during projection. It is a modification of the digital camera which concerns on embodiment, and is sectional drawing which shows the state inside the camera at the time of projection.

  Hereinafter, the configuration of an electronic apparatus according to an embodiment of the present invention, for example, a digital camera will be described with reference to the drawings. The digital camera 1 according to the present embodiment is a camera having both a shooting function and a projection function. In the description of the present invention, the term “projection” is used in the meaning of projection, which is synonymous with “projection”.

FIG. 1 shows a digital camera 1 at the time of shooting. A camera housing 10 of the digital camera 1 has a front cover 11, a rear cover 12, an upper cover 13, and a right cover (not shown) that face a subject at the time of shooting. And a left cover 15 and a lower cover (not shown). The front cover 11 is formed with a protrusion 11a for improving holdability. The taking lens barrel 17 accommodates the taking lens 2 and takes a position protruding from the circular opening of the front cover 11 or a retracted position accommodated in the camera housing 10. The upper cover 13 is provided with a power button 111, a release button 112, a mode dial 113 for selecting a shooting mode, a playback mode, a projection mode, and the like.
Hereinafter, the subject side of the camera is referred to as “front”, and is referred to as front, rear, left, and right based on this.

  The monitor unit 30 is pivotally attached to the camera housing 10 by a hinge 31, and can take an arbitrary position between an open state in which the opening window 12a is opened and a closed state in which the opening window 12a is closed. it can. In FIG. 1, the monitor unit 30 is in an open state, and as shown in FIG. 1B, the liquid crystal display panel 32 that displays an image or the like faces rearward, and the opening window 12 a formed in the rear cover 12 is exposed. To do. As will be described in detail later, the opening window 12a is closed by a lid member during photographing.

  The rear cover 12 is provided with back operation members such as a menu key 121 and a multi selector 122. The menu key 121 is an operation member that switches between display and non-display of menu items used at the time of shooting and playback, and the multi-selector 122 moves the cursor to the target menu item by operating the upper, lower, left, and right keys. This is an operation member for setting the function of the menu item combined with.

  FIG. 2 shows the digital camera 1 during projection, and the monitor unit 30 is in a closed state. As shown in FIG. 2B, the monitor back cover 33 of the monitor unit 30 faces rearward, so that the display panel 32 shown in FIG. 1B faces the rear cover 12 and is formed on the rear cover 12. The opened window 12 a is shielded by the monitor unit 30.

  FIG. 3 is a cross-sectional view showing the internal state of the camera housing 10 and the monitor unit 30 during photographing. In the opened state shown in FIG. 1, the monitor unit 30 is in a position protruding to the left instead of the rear of the camera housing 10, but the camera housing viewed along the arrow II in FIG. A cross-sectional view of the monitor unit 30 viewed along the cross-sectional view 10 and the arrow II-II is shown in one drawing.

  Referring to the cross-sectional view of the camera housing 10 in FIG. 3, the taking lens barrel 17 is a zoom-type barrel, and includes a first group lens 18, a first group cylinder 19 that accommodates this, a second group lens 20, and this. There are a second group cylinder 21 and a third group lens 22 for housing and a third group cylinder 23 for housing this. The taking lens 2 includes a first group lens 18, a second group lens 20, and a third group lens 22. The subject image formed by the photographing lens 2 is captured by the image sensor 24.

  In FIG. 3, when the rectilinear cylinder 26 advances and retreats in the optical axis direction of the photographic lens 2 with respect to the fixed cylinder 25, the first group cylinder 19 and the second group cylinder 21 protrude to the front of the front cover 11 or behind the front cover 11. The mechanism is pulled down to be housed in the camera housing 10, but the description of the mechanism is omitted.

  A main chassis 27 is disposed behind the image sensor 24, and a flat transparent protective panel 28 is disposed in close contact with the main chassis 27 between the main chassis 27 and the rear cover 12. The transparent protective panel 28 is provided to prevent foreign matters such as dust from entering the camera housing 10. A rear cover 12 is disposed behind the transparent protective panel 28, and a lid member 29 for opening and closing the opening window 12a is disposed on the rear cover 12. The lid member 29 is an opaque plate-like member. When the monitor unit 30 is in an open state, the cover member 29 covers the opening window 12a to prevent unnecessary light from reaching the image pickup surface of the image pickup device 24. When in the closed state, the user leaves the opening window 12a and opens the opening window 12a. In FIG. 3, as described above, the monitor unit 30 is in an open state, and the lid member 29 covers the opening window 12a.

  Referring to the cross-sectional view of the monitor unit 30 in FIG. 3, the display panel 32 is in a reverse state in which the display panel 32 faces rearward and the monitor back cover 33 faces frontward. A cover glass 34 that prevents the surface of the display panel 32 from being soiled and scratched and a display panel connector board 35 that is electrically connected to each element of the display panel 32 are disposed with the display panel 32 interposed therebetween.

  The display panel 32 is not limited to a liquid crystal display, and an EL (Electo-luminescence) display (inorganic EL, organic EL), a plasma display, an LED (Light Emitting Diode) array, or the like can be used. A liquid crystal display includes an illumination light source, but an EL display, a plasma display, and an LED array are self-luminous displays. The LED array may be of a type in which a phosphor is applied on the light emission side. During projection, it is necessary to brighten the display surface of the display panel 32, which increases power consumption and increases heat generation. Therefore, it is preferable to use aluminum having good thermal conductivity for the cover of the display panel 32.

  The image sensor 24 is positioned on the optical path of the subject light during shooting, but retracts from the optical path of the subject light during projection. FIG. 4 is a view of the retraction movement of the image sensor 24 as seen from the rear of the camera. FIG. 4A is a diagram illustrating the subject light from the position A on the optical path of the subject light by the moving mechanism (not shown). This is an example of retreating by swinging to a position B deviating from the optical path as indicated by reference sign y. In FIG. 4B, the image sensor 24 slides from a position A on the optical path of the subject light to a position C off the optical path of the subject light as indicated by reference sign z by a moving mechanism (not shown). This is another example of evacuation.

FIG. 5 is a cross-sectional view of the camera housing 10 and the monitor unit 30 at the time of projection as viewed along the arrow III-III in FIG. The camera at the time of projection shown in FIG. 5 has substantially the same component arrangement as the camera at the time of shooting shown in FIG.
At the time of projection, the image sensor 24 is not shown because it is retracted to a position outside the optical path of the subject light. Further, the lid member 29 opens the opening window 12a during projection. As shown in FIG. 2, the monitor unit 30 is in a closed state, and is positioned behind the rear cover 12 of the camera housing 10 with the display panel 32 facing forward. With the components arranged in this manner, the display image on the display panel 32 is projected on the front external screen or the like by the photographing lens 2 including the first group lens 18, the second group lens 20, and the third group lens 22. The

  The overall arrangement of the components of the digital camera 1 during projection will be described with reference to the exploded perspective view of FIG. In FIG. 6, the front cover 11 disposed at the front of the digital camera 1 to the monitor back cover 33 disposed at the rear will be described in order. As described above, the front cover 11, the rear cover 12, the upper cover 13, the right cover 14, the left cover 15, and the lower cover (not shown) constitute a camera housing. The front cover 11 is formed with a circular opening 11b, and the upper cover 13 is provided with a power button 111, a release button 112, and a mode dial 113.

  The resin frame 16 is a component that is disposed substantially parallel to the front cover 11 and maintains the mechanical strength of the entire camera, and has a circular opening 16a. A photographic lens barrel 17 is arranged behind the resin frame 16. After the camera is assembled, the photographic lens barrel 17 is moved through the circular opening 16 a of the resin frame 16 and the circular opening 11 b of the front cover 11 by the lens driving mechanism 17 a. It will be in the retracted state where it protrudes outside or is stored behind the circular opening 11b. On the right side of the lens driving mechanism 17a, a main circuit board 114 having a CPU that controls each component of the camera and functions as an image processing engine is disposed.

  A main chassis 27 is disposed behind the lens driving mechanism 17a and the main circuit board 114, and a rectangular opening 27a is formed in the main chassis 27 on an extension line of the optical axis of the photographing lens 2. The rectangular opening 27 a has a rectangular shape centered on an extension line of the optical axis of the photographing lens 2. The transparent protective panel 28 is provided in close contact with the main chassis 27 in order to prevent foreign matters such as dust from entering the camera housing 10 through the rectangular opening 27a.

  A rear cover 12 is disposed behind the transparent protective panel 28, and an opening window 12 a is formed in the rear cover 12. The opening window 12a has a rectangular shape centered on an extension line of the optical axis of the photographing lens 2. On the rear cover 12, a lid member 29 for opening and closing the opening window 12a is disposed. The lid member 29 covers the aperture window 12a when the monitor unit 30 is in an open state, and prevents unnecessary light from reaching the imaging surface of the image sensor 24. When the monitor unit 30 is in a closed state, the lid member 29 The opening window 12a is opened by sliding in the x direction from 12a. The lid member 29 may be moved manually or may be an automatic opening / closing type that is interlocked with the rotation of the monitor unit 30 in the closed state / open state. The lid member 29 may be partly assembled with the rear cover 12.

  As shown in FIGS. 2 and 5, the monitor unit 30 during projection is positioned behind the rear cover 12 and the lid member 29 with the display panel 32 facing forward and the monitor back cover 33 facing backward.

  In the digital camera 1 configured as described above, the arrangement and movement of each component during shooting and the arrangement and movement of each component during projection will be described below. When the mode dial 113 is operated, the shooting mode is set for shooting, and the projection mode is set for projection. As described above, the digital camera 1 uses the same optical system, that is, the photographing lens 2 during photographing and during projection.

-Shooting mode-
When the user presses the power button 111, various preparation operations are performed. When the mode dial 113 is operated to select the shooting mode, the digital camera 1 is in the following state. That is, the photographic lens barrel 17 moves from the retracted position to the basic position that is the initial state, and accordingly, the lens groups 18, 20, and 22 each take the basic position. The image sensor 24 is located on the optical path of the subject light (position A in FIG. 4).

  In the photographing mode, the user normally rotates the monitor unit 30 via the hinge 31 so that the display surface of the display panel 32 faces rearward to open the display panel 32. At this time, since the lid member 29 is in a position covering the opening window 12a, unnecessary light does not enter the inside of the camera casing 10 through the opening window 12a. The user determines the composition while observing the through image displayed on the display panel 32, determines the angle of view by a zoom operation, presses the release button 112, and performs shooting. In the shooting mode, AF operation and automatic exposure operation are also performed.

-Projection mode-
When the user presses the power button 111, various preparation operations are performed. When the projection mode is selected by operating the mode dial 113, the digital camera 1 is in the following state. That is, the photographing lens barrel 17 moves from the retracted position to the basic position, and accordingly, the lens groups 18, 20, and 22 of the photographing lens 2 also take the basic position. The image sensor 24 retreats from the optical path of the subject light (position B in FIG. 4A or position C in FIG. 4B).

  In the projection mode, the user keeps the monitor unit 30 in the closed state. If the monitor unit 30 is in the open state, the monitor unit 30 is rotated through the hinge 31 to be in the closed state. At this time, the display surface of the display panel 32 faces forward. The lid member 29 slides in the x direction in FIG. 6 from the position covering the opening window 12a to open the opening window 12a. This completes the projection preparation. A user reproduces an image based on image data recorded on a memory card, a flash memory built in a camera, or the like on the display surface of the display panel 32, and a light image of a desired reproduced image is passed through the photographing lens 2 to, for example, a screen. Project. In this way, projection is performed using the photographing lens 2 as a projection lens. Even in the projection mode, the AF operation is performed according to the projection distance. In addition, the luminance of the illumination light source of the display panel 32 that is a light source during projection is automatically adjusted.

  Here, the size of the reproduced image displayed on the display surface of the display panel 32 and the orientation of the image will be described. In general, since the display surface of the monitor unit is larger in size than the image pickup surface of the image pickup device, when the photographing lens 2 is used as a projection lens, when the image is reproduced on the entire display surface, the peripheral image is projected. It will not be done. Therefore, it is necessary to reduce and display the image displayed on the entire display surface in the projectable area.

  FIG. 7 shows an example of an image displayed on the display panel 32. FIG. 7A shows an original image (original image), and FIG. 7B shows an image displayed during projection (projection image). . The original image 100A in FIG. 7A is displayed on the entire display surface of the display panel 32, whereas the projection image 100B in FIG. 7B matches the projectable area 101 on the display surface. So that it is reduced. The projection image 100B is a vertically inverted image that is rotated 180 ° around the screen vertical axis with respect to the original image 100A displayed in the correct orientation for the user. This image processing is mounted on the digital camera 1. This is performed by an image processing apparatus (not shown). In this way, the projection image 100B is correctly projected and displayed on the screen by reducing the original image 100A and turning it upside down.

The digital camera 1 of the present embodiment has the following operational effects.
(1) Since the dust-proof transparent protective panel 28 is provided between the image sensor 24 and the opening window 12a, foreign matter such as dust can enter the camera from the outside even during projection with the opening window 12a open. Can be prevented.
(2) At the time of photographing, the lid member 29 is moved to a position that covers the opening window 12a so as to block the light, so that unnecessary light does not enter the inside of the camera casing 10 through the opening window 12a.
(3) The projection image 100B is reduced to fit in the projectable area on the display surface and rotated by 180 ° with respect to the original image 100A. Therefore, the photographing lens 2 is used as a projection lens on the screen. When projected, the entire original image 100A is projected and displayed in the correct orientation.

Modifications of the present embodiment are as follows.
(1) In the digital camera 1 of the present embodiment, the lid member 29 is moved so as to take a position covering the opening window 12a and an opening position. However, the lid member 29 is composed of an electro-optical element, The opening window 12a may be switched between a light shielding state and an open state by changing the light transmittance.
(2) In the digital camera 1 of the present embodiment, the transparent protective panel 28 has a flat plate shape, but it can be a Fresnel lens having a function of a convex lens and can be used as an auxiliary lens for the photographing lens 2. When the user opens and closes the monitor unit 30 by hand, the structure of the hinge 31 must be changed to adjust the image pickup surface of the image pickup device 24 and the display surface of the display panel 32 to the same position. Can be used.
(3) In the digital camera 1 according to the present embodiment, the transparent protective panel 28 is made of glass or acrylic, but it may be formed of a liquid crystal panel whose light transmittance is variable by voltage ON / OFF control. Good. At the time of shooting, a predetermined voltage is applied to make the liquid crystal panel opaque, and at the time of projection, the voltage is set to zero to make the liquid crystal panel transparent. In this case, the lid member 29 can be omitted.
(4) In the digital camera 1 of the present embodiment, the illumination light source of the display panel 32 is used as the light source at the time of projection. However, a light source at the time of projection is added separately, and the added light source is used for projection. An image may be projected.
(5) In the digital camera 1 of the present embodiment, as shown in FIG. 5, the cover glass 34 of the monitor unit 30 is positioned and projected so as to be parallel to the rear cover 12 of the camera housing 10. Perform the action. On the other hand, in the modification shown in FIG. 8, the projection operation is performed by tilting the cover glass 34 of the monitor unit 30 clockwise by the angle θ with respect to the rear cover 12 of the camera housing 10. This has the same effect as tilt shooting in which the optical axis of the lens is tilted with respect to the photosensitive surface. That is, when the screen is tilted, the monitor unit 30 is tilted in accordance with the tilt angle of the screen as shown in FIG. 8 to obtain a projected image without distortion on the screen. The tilt direction of the monitor unit 30 can be either up, down, left, or right only by changing the attachment position of the hinge. Furthermore, it can respond to various tilt directions by making the monitor unit 30 into a vari-angle type.

  The present invention can be applied not only to a digital camera but also to a camera-equipped mobile phone. The present invention is not limited to the embodiment described above as long as the characteristics are not impaired.

1: Digital camera 2: Shooting lens 10: Camera housing 11: Front cover 12: Rear cover 12a: Opening window 17: Shooting lens barrel 27: Main chassis 28: Transparent protective panel 29: Lid member 30: Monitor unit 31: Hinge 32: Display panel

Claims (6)

Optical system,
An image sensor that moves between a photographing position located on a predetermined focal plane of the optical system and a retreat position that is retreated from the photographing position, and picks up a subject image from the optical system;
A camera body having a back cover, and an opening window formed in a portion of the back cover facing the imaging element at the shooting position;
A light shielding member for switching the opening window between a light shielding state and an open state;
A dust-proof transparent protective panel provided between the image sensor and the opening window;
A movable display device attached to the camera body so as to be movable between a storage position where the display surface faces the opening window and an open position where the display surface is exposed to the outside,
At the time of shooting, the aperture window is in the light shielding state, the image sensor is in the shooting position,
When projecting, the opening window is in the open state, the imaging element is in the retracted position, the display device is in the storage position, and the display image of the display surface is displayed on the display surface. Features electronic equipment. The electronic device according to claim 1,
An electronic apparatus, further comprising: an image processing device that reduces a display image on the display surface and inverts the image. The electronic device according to claim 1 or 2,
The electronic device is characterized in that the light shielding member is an opaque lid member that moves so as to switch the opening window between the light shielding state and the open state. The electronic device according to claim 1 or 2,
The electronic apparatus according to claim 1, wherein the light shielding member is an electro-optical element that switches the opening window between a light shielding state and an open state by changing light transmittance. In the electronic device of any one of Claims 1-4,
The transparent protective panel is an optical member having a convex lens function. In the electronic device of any one of Claims 1-5,
2. The electronic apparatus according to claim 1, wherein the transparent protective panel is a liquid crystal panel whose light transmittance is variable by voltage ON / OFF control.

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