JP2020181373A - Electronic apparatus having optical input device - Google Patents

Abstract

To provide an electronic apparatus having an optical input device whose detection surface is hardly damaged and that is hardly affected by dust.SOLUTION: An electronic apparatus 100 has an optical input device 1. The optical input device includes: a detection surface 80f; a light source 881 for emitting illumination light that transmits through the detection surface to illuminate a contact object in contact with the detection surface; an optical member 880 having an imaging optical unit 880a for imaging reflected light reflected by the contact object and transmitted through the detection surface among the illumination light; and a light receiving sensor 882 for photoelectrically converting an optical image of the contact object formed by the reflected light. The detection surface has a concave curved surface shape that is recessed from a peripheral portion surrounding the detection surface of an exterior surface 80h of the electronic apparatus. An optical axis position of the imaging optical unit is shifted from a center position or the most recessed position in the detection surface.SELECTED DRAWING: Figure 8

Description

The present invention relates to an electronic device such as a digital camera, and more particularly to an electronic device provided with an optical input device for detecting the movement of a contact object such as a finger in contact with a detection surface.

As an electronic device as described above, Patent Document 1 describes an optical tracking pointer as an optical input device having a finger guide surface recessed from the outer surface of the housing and a detection surface (contact surface) following the finger guide surface. A tablet computer equipped with the above is disclosed. Since the detection surface that the finger contacts to read the fingerprint is recessed from the appearance surface, the detection surface is less likely to be scratched.

Japanese Patent No. 4374049

However, in the optical input device disclosed in Patent Document 1, since the contact surface is formed so as to be more convex than the finger guide surface around the optical input device, this may cause resistance and worsen finger slippage. is there. For this reason, the contact surface may be formed in a concave shape following the finger guide surface, but this makes it easy for fine dust to collect in the central part (the most recessed part) of the contact surface, and fingerprints are detected by the collected dust. May be hindered.

The present invention provides an electronic device provided with an optical input device whose detection surface is not easily scratched and is not easily affected by dust.

An electronic device as one aspect of the present invention includes an optical input device. The optical input device includes a detection surface, a light source that emits illumination light that passes through the detection surface and illuminates a contact object that comes into contact with the detection surface, and reflection of the illumination light that is reflected by the contact object and passes through the detection surface. It has an optical member having an imaging optical unit that forms an image of light, and a light receiving sensor that photoelectrically converts an optical image of a contact formed by reflected light. The detection surface has a concave curved surface shape that is recessed from the peripheral portion surrounding the detection surface of the exterior surface of the electronic device. The optical axis position of the imaging optical unit is deviated from the central position or the most recessed position on the detection surface.

According to the present invention, it is possible to realize an electronic device provided with an optical input device in which the detection surface is not easily scratched and is not easily affected by dust.

The perspective view which shows the appearance of the camera system which is an Example of this invention. The perspective view which shows the arrangement of the AF-ON button and the shutter button provided in the said camera system. The rear view and the top view of the camera system. Sectional drawing of the above-mentioned AF-ON button and shutter button. The block diagram which shows the electrical structure of the said camera system. The figure explaining the imaging example using the said camera system. Top view and sectional view showing the structure of the AF-ON button and the optical tracking pointer. The figure which shows the schematic structure of the said optical tracking pointer.

Hereinafter, examples of the present invention will be described with reference to the drawings.

1 (A) and 1 (B) show the appearances of the interchangeable lens digital camera system 1000 according to the embodiment of the present invention as viewed from the front side and the back side, respectively. The digital camera system 1000 has a camera body 100 and an interchangeable lens unit 150, which are electronic devices, respectively. The interchangeable lens unit 150 holds an image pickup lens.

In FIG. 1A, the camera body 100 is provided with a first grip portion 101 projecting forward. The user can operate the shutter button 103 while holding the first grip portion 101 with his right hand and holding the camera system 1000 in a normal posture. Further, the camera body 100 is provided with a second grip portion 102 projecting forward. The user can operate the shutter button 105 while holding the second grip portion 102 with his right hand and holding the camera system 1000 in a vertical posture.

When the shutter buttons 103 and 105 are half-pressed (first stroke), imaging such as AF (autofocus) processing, AE (autofocus) processing, AWB (auto white balance) processing, and EF (flash pre-flash) processing is performed. A preparatory operation is performed. When the shutter buttons 103 and 105 are fully pressed (second stroke), a series of imaging operations including recording imaging and recording of captured images (image data) are performed.

In FIG. 1B, the power switch 43 is operated by the user to turn on / off the power of the camera system 1000. The finder eyepiece lens 16 is a place that the user looks into when observing a subject image (optical image) formed by light incident from the interchangeable lens unit 150. Through the finder eyepiece 16, the user can observe the subject image together with the information displayed on the in-finder display described later.

The rear monitor 28 as a display unit can display captured images and various information. A touch panel sensor capable of detecting a touch operation is provided on the display surface of the rear monitor 28.

The AF-ON buttons 80a, 80b, 80c, and 80d are each provided to start the AF process according to the user operation. The AF process can also be stopped by canceling the operation of the AF-ON buttons 80a to 80d. Optical tracking pointers (OTPs: optical input devices) 1, 2, 3, 4, 5, 6 are incorporated inside the AF-ON buttons 80a to 80d and the shutter buttons 103, 105. Each OTP is a touch operation member that optically detects the movement of a pattern such as a fingerprint of a contact object such as a user's finger and outputs an electric signal. By using the electric signal from the OTP, it is possible to acquire information on the movement (movement direction and movement amount) of the contact object.

FIG. 8 shows OTP1 incorporated in the AF-ON button 80a. The OTP 1 has a detection surface 80f formed as a part of the AF-ON button 80a, a light source 881, an optical member 880, and a light receiving sensor 882. The optical member 880 has an illumination lens unit 880b and a detection lens unit 880a.

The light source 881 emits illumination light such as infrared light. The optical member 880 guides the illumination light from the light source 881 to the illumination lens unit 880b, and irradiates the illumination light from the illumination lens unit 880b toward the detection surface 80f. The reflected light transmitted through the detection surface 80f and reflected by the fingerprint of the finger in contact with the detection surface 80f is imaged on the light receiving surface of the light receiving sensor 883 via the detection lens unit 880a as the imaging optical unit. The light receiving sensor 883 is composed of a photoelectric conversion element such as an image sensor, and photoelectrically converts an optical image of a fingerprint formed on the light receiving surface to generate an electric signal. By using this electric signal, it is possible to detect whether or not the finger touches the detection surface 80f. The user can also instruct the start and stop of the AF process by touching or releasing the detection surface 80f of the AF-ON buttons 80a to 80d.

Further, when the user moves (slides) his / her finger on the detection surface 80f in the two-dimensional direction, the electric signal output from the light receiving sensor 882 also changes. The system control unit 50 can obtain information indicating the movement direction and movement amount of the finger by performing image processing on the electric signal. The system control unit 50 uses the obtained information on the movement direction and movement amount of the finger to move the cursor on the AF frame or menu screen displayed on the above-mentioned in-finder display or rear monitor 28, or the shutter speed. , ISO sensitivity, aperture, exposure compensation value, etc. can be changed, and the reproduced image can be switched. That is, the display on the display in the finder and the rear monitor 28 is controlled.

The AF frame is a rectangular or circular frame indicating an area to be focused by AF in the imaging screen. Regarding the AF frame, for example, the user can move the subject on the OTP built into the AF-ON button while performing servo AF to keep the camera focusing on the moving subject. The AF frame can be moved at the same time. A more detailed configuration of the OTP will be described later.

The AF-ON buttons 80a to 80d and the shutter buttons 103 and 105 incorporating the OTPs 1 to 6 are shown in FIG. 2 so that the AF process can be started immediately while performing a touch operation or a slide operation on them. It is desirable that they are arranged as shown in A) to (D) and FIGS. 3 (A) to 3 (D). FIGS. 2 (A) and 2 (C) show the camera system 1000 in a positive posture when viewed from an oblique angle on the back side, respectively, and FIGS. 2 (B) and 2 (D) show diagonally opposite sides on the back side, respectively. It shows a camera system 1000 in a vertical posture as seen from above. Further, FIGS. 3 (A) and 3 (B) show the camera body 100 in the normal posture when viewed from the back side, and FIGS. 3 (C) and 3 (D) show the camera system in the normal posture when viewed from the left side and the top side, respectively. It shows 1000.

As shown in FIG. 2A, the shutter button 103 is arranged at a position that can be operated by the index finger 301a of the right hand 301 holding the first grip portion 101 of the camera body 100 in the normal posture. That is, the shutter button 103 is arranged at a position where it overlaps with the first grip portion 101 when the camera body 100 in the normal posture is viewed from the upper surface. Further, as shown in FIG. 2B, the shutter button 105 is arranged at a position that can be operated by the index finger 301a of the right hand 301 holding the second grip portion 102 of the camera body 100 in the vertical posture. That is, the shutter button 105 is arranged at a position where it overlaps with the second grip portion 102 when the camera body 100 in the vertical posture is viewed from the upper surface (the right side surface in the normal posture).

As shown in FIG. 2C, the AF-ON button 80a is arranged at a position that can be operated by the thumb 301b of the right hand 301 holding the first grip portion 101 of the camera body 100 in the normal posture. More specifically, as shown in FIG. 3A, the AF-ON button 80a has a vertical center line C1 of the first grip portion 101 when the camera body 100 in the normal posture is viewed from the rear side. It is located above. Further, it is desirable that the AF-ON button 80a is arranged on the right side of the center line C2 in the left-right direction of the rear monitor 28 and in the diagonal line range A avoiding the convex frame portion 601 surrounding the finder 6. Further, regarding the arrangement position of the AF-ON button 80a (OTP1) in the left-right direction, the distance from the right end of the first grip portion 101 in the left-right direction to the center of the convex frame portion 601 surrounding the finder eyepiece 16 and the AF-ON button 80a When the distances to the center of are D1 and D2, respectively,
D1 ≧ D2
It is desirable to satisfy the above conditions. By satisfying this condition, when the user looks into the finder eyepiece 16, the user's eye and the finger operating the AF-ON button 80a do not interfere with each other, so that the operability is improved.

Further, in order to keep firmly gripping the first grip portion 101 before the user operates the shutter button 103 after operating the AF-ON button 80a, the shutter button 103 operated by the index finger 301a and the housing are sandwiched between them. It is desirable that the AF-ON button 80a is located on the opposite side. Further, in order to operate the shutter button 103 and the AF-ON button 80a without lifting the belly of the hand from the first grip portion 101, it is desirable to satisfy the following conditions. As described above, the distance from the right end of the first grip portion 101 in the left-right direction to the center of the AF-ON button 80a is D2, and also from the right end of the first grip portion 101 in the left-right direction to the center of the shutter button 103. Let the distance be D3. At this time,
D2 ≧ D3
It is desirable to satisfy the above conditions.

From the viewpoint of operability when the menu screen or the like displayed on the rear monitor 28 is operated by the AF-ON button 80a (OTP1), it is desirable that the arrangement position of the AF-ON button 80a satisfies the following conditions. As described above, the distance to the center of the AF-ON button 80a is D2, and the distance from the right end of the first grip portion 101 in the left-right direction to the center of the rear monitor 28 is D4. At this time,
D4 ≧ D2
It is desirable to satisfy the above conditions. By satisfying this condition, it is possible to prevent the rear monitor 28 from being hidden by the finger operating the AF-ON button 80a.

As shown in FIG. 2D, the AF-ON button 80b is arranged at a position that can be operated by the thumb 301b of the right hand 301 holding the second grip portion 102 of the camera body 100 in the vertical posture. More specifically, as shown in FIG. 3B, the AF-ON button 80b is a center line C3 in the left-right direction of the second grip portion 102 when the camera body 100 in the normal posture is viewed from the rear side. It is located on the right side of. Further, it is desirable that the AF-ON button 80b is arranged in the diagonal line range B below the center line C4 in the vertical direction of the rear monitor 28.

As shown in FIG. 2C, the AF-ON button 80c is formed with the right hand 301 holding the first grip portion 101 of the camera body 100 in the normal posture among the outer peripheral surfaces (exterior surfaces) of the interchangeable lens unit 150. Is located in a position that can be operated by the thumb 302a of a different left hand 302. More specifically, as shown in FIG. 3C, the AF-ON button 80c can be seen when the camera system 1000 in the normal posture is viewed from the left side surface opposite to the first grip portion 101. It is desirable to arrange it in the shaded area C on the interchangeable lens unit 150. Further, as shown in FIG. 2D, the AF-ON button 80d is a left hand different from the right hand 301 holding the second grip portion 102 of the camera body 100 in the vertical posture on the outer peripheral surface of the interchangeable lens unit 150. It is arranged at a position that can be operated by the thumb 302a of 302. More specifically, as shown in FIG. 3D, the AF-ON button 80d is an interchangeable lens that can be seen when the vertical camera system 1000 is viewed from the upper surface side opposite to the second grip portion 102. It is desirable to place it in the shaded area D on the unit 150.

FIG. 4A shows the configuration of the AF-ON button 80a incorporating the OTP1. The same applies to the configurations of the other AF-ON buttons 80b to 80d (OTP2 to 4). The AF-ON button 80a is turned on by being pushed in a direction perpendicular to the exterior surface of the camera body 100 or the lens unit 150.

The OTP1 is arranged in the recess 80e formed inside the AF-ON button 80a. FIG. 7A shows the AF-ON button 80a and OTP1 as viewed from a direction perpendicular to the exterior surface. The AF-ON button 80a is formed in a circular shape centered on a central axis CA extending in a direction perpendicular to the exterior surface. The AF-ON button 80a is formed with a circular detection surface 80f and a button exterior surface (peripheral portion) 80h formed in an annular shape adjacent to and surrounding the outer edge of the detection surface 80f. The button exterior surface 80h is also a part of the exterior surface of the camera body 100 or the interchangeable lens unit 150. The detection surface 80f is formed as a mirror surface so that the inside of the AF-ON button 80a cannot be seen from the outside.

FIG. 7B shows a cross section of the AF-ON button 80a and OTP1 shown in FIG. 7A when cut along the DD line. As described above with reference to FIG. 8, the illumination light from the light source 881 passes through the illumination lens portion 880b of the optical member 880 from the inside to the outside of the detection surface 80f, and the finger in contact with the detection surface 80f. Is irradiated to. Then, the reflected light from the finger (fingerprint) passes through the detection lens portion 880a of the optical member 880 and is imaged on the light receiving sensor 882.

As shown in FIGS. 7B and 8, the detection surface 80f has a concave curved surface shape (concave spherical surface shape) having a radius of curvature SR. FIG. 8 exaggerates the concave spherical shape of the detection surface 80f, which is difficult to understand in FIG. 7B.

In the AF-ON button 80a, the detection surface 80f is a portion thinner than the other portions, and unevenness is likely to occur due to heat shrinkage immediately after molding the AF-ON button 80a. On the detection surface 80f formed as a mirror surface, such unevenness is conspicuous in appearance. Therefore, in this embodiment, the detection surface 80f is formed into a concave spherical shape having a radius of curvature SR from the outer edge (inner edge of the button outer surface 80h) so that unevenness is less likely to occur due to heat shrinkage immediately after molding. Has been done. Further, by forming the detection surface 80f into a concave spherical shape, it is possible to prevent the detection surface 80f from being scratched.

Further, when the light reflected from the fingerprint is imaged on the light receiving sensor 882 by the detection lens unit 880a, in order to minimize the difference in the optical path length between the central portion and the peripheral portion of the detection surface 80f, the detection unit is used. It is desirable that the difference in wall thickness between the central portion and the peripheral portion of 80f is 0.02 mm or less. Therefore, when the diameter of the detection surface 80f is α, the radius of curvature SR (mm) is
SR ≧ 6.25α ² + 0.01
It is desirable to satisfy the above conditions. The diameter α of the detection surface 80f suitable for fingerprint detection is preferably 2 to 15 mm.

Further, if the amount of the dent on the detection surface 80f is too large with respect to the button exterior surface 80h, it becomes difficult for the finger to come into close contact with the detection surface 80f, which may cause fingerprint detection failure. Therefore, it is desirable that the amount of recess of the detection surface 80f with respect to the button exterior surface 80h is 0.015 mm or less. In this case, the radius of curvature SR (mm) is
SR ≧ 8.33α ² +0.0075
It is desirable to satisfy the above conditions.

Further, as shown in FIGS. 7 (A), 7 (B) and 8, in this embodiment, the central position (optical axis position) 880ac through which the optical axis of the circular detection lens 880a of the optical member 880 passes is the detection surface. It is displaced by ΔA in the x direction and by ΔB in the y direction with respect to the most recessed center position 80i of the 80f. The x-direction and the y-direction are directions orthogonal to the optical axis of the detection lens 880a.

When a minute dust DS adheres to the detection surface 80f formed in a concave spherical shape as shown in FIG. 8, the dust DS tends to collect near the most recessed center position 80i of the detection surface 80f. If the center position 880ac of the detection lens portion 880a of the optical member 880 coincides with the center position 80i of the detection surface 80f, the dust DS collected near the center position 80i may hinder the detection of fingerprints. Therefore, in this embodiment, as described above, by shifting the center position 880ac of the detection lens 880a by ΔA and ΔB with respect to the center position 80i of the detection surface 80f, dust collected near the center position 80i of the detection surface 80f The DS makes it difficult to affect fingerprint detection.

In this embodiment, the center position 880ac of the detection lens unit 880a is shifted from the center position 80i of the detection surface 80f, but the present invention is not limited to this, and the center position of the detection lens unit is set to the detection surface. It may be shifted to the most recessed position, that is, the position farthest from the outer surface of the button, where dust is likely to collect.

Further, in this embodiment, the case where the detection surface 80f is circular has been described, but it may have other shapes such as a quadrangular shape. The center of the rectangular detection surface may be the intersection of two diagonal lines or the like.

Further, in this embodiment, the button outer surface 80h is subjected to a satin finish to improve the slippage of the fingers. Further, in order to make it easier for the user to intuitively understand the position of the detection surface 80f to which the finger is in contact, the button exterior surface 80h is provided with the inner edge (outer edge of the detection surface 80f) as shown in an exaggerated manner in FIG. ), It is desirable to have a convex shape (convex slope shape) in which the amount of protrusion P to the outside gradually increases.

In FIG. 4A, the under operation member 90 is arranged directly below the AF-ON button 80a. The shaft portion 90a of the under operation member 90 is slidably fitted in the hole portion 600a formed in the button base 600 in the vertical direction in the drawing. The entire circumference of the annular convex portion formed on the outer periphery of the lower portion of the AF-ON button 80a is adhered to the joint portion 90e of the under operating member 90, whereby the AF-ON button 80a, the under operating member 90 and the under operating member 90 are separated from each other. The OTP1 sandwiched and held can be integrally moved in the vertical direction.

A cylindrical elastic member 700 such as silicon rubber is sandwiched between the exterior cover (exterior member) 100a of the camera body 100 and the button base 600. As a result, water and dust are prevented from entering the inside of the camera body 100 from between the exterior cover 100a and the button base 600. Further, the slope portion 90b formed in an annular shape on the outer circumference of the under operation member 90 and the convex portion 700a provided in an annular shape on the inner circumference of the elastic member 700 come into contact with each other on the entire circumference. As a result, water and dust are prevented from entering the inside of the camera body 100 from between the AF-ON button 80a and the exterior cover 100a.

The OTP 1 is mounted on the flexible substrate 800, and the flexible substrate 800 is connected to a main substrate (not shown) in the camera body 100 through a hole 90c formed in the under operation member 90.

A switch rubber 500 having a conductive rubber 500a and a flexible printed circuit board 502 are arranged under the under operation member 90. The switch rubber 500 holds the under operation member 90, the OTP1 and the AF-ON button 80a at the positions shown in the figure (off state) due to its elastic force.

A conductive pattern 502a is provided on a portion of the flexible printed circuit board 502 facing the conductive rubber 500a. When the user pushes down the AF-ON button 80a, the switch rubber 500 pushed by the under-operation member 90 is elastically deformed and the conductive rubber 500a comes into contact with the conductive pattern 502a. As a result, the switch portion of the AF-ON button 80a composed of the conductive pattern 502a and the conductive rubber 500a is turned on.

In addition, in order to keep the AF-ON button 80a in the off state, a spring may be used instead of the switch rubber 500.

FIG. 4B shows the configuration of the shutter button 103 incorporating the OTP 5. The configuration of the other shutter button 105 (OTP6) is the same. The shutter button 103 is pushed by the user in a direction perpendicular to the exterior surface of the camera body 100 by the first stroke to turn on the switch SW1 and generate a first shutter switch signal. Further, the shutter button 103 turns on the switch SW2 by being pushed by the second stroke, and generates the second shutter switch signal SW2.

The OTP 5 is arranged in the recess 103e formed inside the shutter button 103. An under operation member 99 is arranged directly below the shutter button 103. The shaft portion 99a of the under operation member 99 is slidably fitted in the hole portion 610c formed in the button base 610 in the vertical direction in the drawing. The entire circumference of the annular convex portion formed on the outer periphery of the lower portion of the shutter button 103 is adhered to the joint portion 99e of the under operating member 99, whereby the shutter button 103, the under operating member 99 and the under operating member 99 are sandwiched and held between them. The OTP5 is integrally movable in the vertical direction. The under-operating member 99 is prevented from coming off upward from the button base 610 by the retaining member 69 attached to the lower part of the shaft portion 99c abutting on the lower surface of the button base 610.

A cylindrical elastic member 710 such as silicon rubber is sandwiched between the exterior cover 100a of the camera body 100 and the button base 610. As a result, water and dust are prevented from entering the inside of the camera body 100 from between the exterior cover 100a and the button base 610. Further, the slope portion 99b formed in an annular shape on the outer circumference of the under operation member 99 and the convex portion 710a provided in an annular shape on the inner circumference of the elastic member 710 come into contact with each other on the entire circumference. As a result, water and dust are prevented from entering the inside of the camera body 100 from between the shutter button 103 and the exterior cover 100a.

The OTP 5 is mounted on the flexible substrate 810, and the flexible substrate 810 is connected to the main substrate in the camera body 100 through a hole 99c formed in the under operation member 99.

Conductive leaf switches 777, 888, 999 are arranged under the under operation member 99. When the shutter button 103 is pressed by the user for the first stroke, the switch SW1 composed of the leaf switch 777 and the leaf switch 888 conducts to generate the first shutter switch signal. Further, when the shutter button 103 is pressed by the second stroke, the switch SW2 composed of the leaf switch 888 and the leaf switch 999 conducts and a second shutter switch signal is generated.

FIG. 5 shows the electrical configuration of the camera system 1000 (camera body 100 and interchangeable lens unit 150). As described above, the interchangeable lens unit 150 provided with the image pickup lens 155 has a lens control circuit 201 and a communication terminal 66 for the lens control circuit 201 to communicate with the camera body 100.

The lens control circuit 201 controls the drive of the aperture 204 via the aperture drive circuit 203, or moves a focus lens (not shown) included in the image pickup lens 155 along the optical axis 900 via the AF drive circuit 202. I do focusing. The above-mentioned switch unit 71 of the AF-ON buttons 80c and 80d and the OTPs 5 and 6 are connected to the lens control circuit 201.

On the other hand, the camera body 100 includes an image sensor 22, a photometric circuit 106, a focus detection unit 11, and a system control unit (control means) 50. The system control unit 50 can communicate with the interchangeable lens unit 150 (lens control circuit 201) via the communication terminal 10.

The image pickup device 22 is composed of a CMOS sensor, and photoelectrically converts a subject image (optical image) formed by the image pickup lens 155 to output an analog image pickup signal. The photometric circuit 106 uses a photometric sensor 17 to measure the brightness of the subject imaged on the focusing screen 13 via the quick return mirror 12. The photometric circuit 106 sends the photometric result to the system control unit 50.

The focus detection unit 11 photoelectrically converts the subject image formed by the light incident from the image pickup lens 155 through the quick return mirror 12 and the sub mirror 30 in the mirror down state described later to generate a pair of subject image signals. The defocus amount of the image pickup lens 155 is calculated by a phase difference detection method using these pairs of subject image signals. The focus detection unit 11 outputs the calculated defocus amount to the system control unit 50.

The system control unit 50 transmits the lens drive amount calculated based on the defocus amount to the lens control circuit 201. The lens control circuit 201 performs phase-difference AF by driving and controlling the focus lens via the AF drive circuit 202 according to the received lens drive amount. It should be noted that the image pickup surface phase difference AF using the image pickup element 22 may be performed instead of the focus detection unit 11, or the contrast AF (TV-AF) may be performed.

The system control unit 50 controls the up / down drive of the quick return mirror 12 and the sub mirror 30 via the mirror drive circuit 101. In the mirror-down state in which the quick return mirror 12 is arranged in the imaging optical path as shown in the drawing, the light incident from the imaging lens 155 is reflected toward the focusing screen 13 to form a subject image on the focusing screen 13. As a result, the user can observe the subject image on the focusing screen 13 through the finder eyepiece 16 and the pentaprism 14, and the photometric sensor 17 can measure the light.

An in-finder display 41 as a display unit is provided in the optical finder composed of the focusing screen 13, the pentaprism 14, and the finder eyepiece 16. The in-finder display 41 is driven by the in-finder display drive circuit 111 controlled by the system control unit 50, and has an AF frame displayed overlaid on the subject image, shutter speed, ISO sensitivity, aperture, exposure compensation value, and the like. Display various information of.

In the mirror lockup state in which the quick return mirror 12 is retracted out of the image pickup optical path, the light incident from the image pickup lens 155 and passing through the shutter 91 forms a subject image on the image pickup element 22. As a result, the image sensor 22 can image the subject image (photoelectric conversion), and live view image pickup and recording image pickup are performed. The shutter 91 is opened and closed by a shutter drive circuit 92 that receives an instruction from the system control unit 50, and controls the exposure of the image sensor 22.

The analog image pickup signal output from the image pickup element 22 is sent to the A / D converter 23 via the clamp / CDS circuit 34 and the AGC 35. The A / D converter 23 converts the analog imaging signal into a digital imaging signal. The image processing unit 24 performs pixel interpolation processing, resizing processing, and color conversion processing on the digital image pickup signal or the image data from the memory control unit 15. Further, the image processing unit 24 performs arithmetic processing for exposure control and focus detection control using the digital image pickup signal. The system control unit 50 performs AF processing, AE processing, AWB processing, and EF processing using the calculation results of the image processing unit 24.

The memory 32 stores the captured image data generated from the digital imaging signal and the display image data for display on the rear monitor 28. A buffer memory 37 is connected to the image processing unit 24 for temporarily recording image data. Further, the recording medium 200 is connected to the memory control unit 15 via the interface 40. The rear monitor 28 is composed of a liquid crystal panel and an organic EL panel, and displays captured images, various information, and an AF frame as described above. Further, as described above, the touch panel sensor 72 is provided on the display surface of the rear monitor 28.

The non-volatile memory 56 stores constants, programs, and the like for the operation of the system control unit 50.

The switch unit 70 is connected to the system control unit 50 via the switch sense circuit 93. The switch unit 70 includes the switch unit of the AF-ON buttons 80a and 80b described above. Further, the power switch 43, OTP1 to 4, and the switches SW1 and SW2 of the shutter switches 103 and 105 are connected to the switch sense circuit 93.

Based on the respective outputs of the OTPs 1 to 6, the system control unit 50 touches the detection surface 80f with the user's finger (hereinafter referred to as touch operation) and moves the finger on the detection surface 80f (hereinafter referred to as slide operation). ) And is detected. Further, the system control unit 50 detects the movement direction of the finger in the slide operation from eight directions of up, down, left, right, upper left, lower left, upper right and lower right, and the two-dimensional direction (x) of the finger in the slide operation. The amount of movement in the direction (direction and y direction) (hereinafter referred to as the amount of movement (x, y)) is also detected.

The system control unit 50 calculates the position of the AF frame after movement according to the detected slide operation direction and movement amount (x, y). Then, the system control unit 50 displays the position of the AF frame after movement on at least one of the rear monitor 28 and the in-finder display 41. A display example of the AF frame will be described later.

The power supply 42 in the camera body 100 supplies power to each part of the camera body 100 and the interchangeable lens unit 150. The power supply 42 includes an AC power supply (AC adapter) 80 and a secondary battery 81. Further, the power supply 42 supplies power to the system control unit 50 via the power supply circuit 110. The system control unit 50 checks the remaining amount of the secondary battery 81 by the battery check circuit 108.

FIG. 6A shows an image displayed in the optical finder, and FIG. 6B shows an image displayed on the rear monitor 28. These figures show a case where the user holds the first grip portion 101 with the right hand 301 and operates the OTP 1 with the thumb 301b of the right hand. Arrow 901 indicates that the user has performed a slide operation on OTP1. The system control unit 50 detects the movement direction and the movement amount of the thumb 301b in this slide operation based on the output from the OTP1.

In FIG. 6A, the AF frame 405a displayed on the display 41 in the finder is the AF frame before the slide operation, and this is the AF frame 405 in the same direction (arrow 902) as the slide operation direction (arrow 901). Move to position. Similarly, in FIG. 6B, the AF frame 305a displayed on the rear monitor 28 is the AF frame before the slide operation, and this is the AF frame 305 in the same direction (arrow 903) as the slide operation direction (arrow 901). Move to the position of.

The system control unit 50 can switch whether or not to accept the touch operation and the slide operation for each OTP. Further, the system control unit can accept touch operations and slide operations for each OTP even during AF processing.

As described above, in the camera system 1000 of the present embodiment, the AF process can be started in response to the touch operation on the OTP, and the AF frame can be moved according to the direction and amount of the slide operation on the OTP. .. Therefore, the user can start the AF process or move the AF frame without moving the finger from the OTP.

In this embodiment, the case where the AF process is started in response to the touch operation on the OTP and the AF frame is moved in response to the slide operation on the OTP has been described, but other processes may be started or selections and settings related to the process may be made. It is also possible to go. For example, a menu screen is displayed on the rear monitor 28 in response to a touch operation on the OTP, the cursor is moved on the menu screen in response to a slide operation on the OTP, and a menu item (shutter) indicated by the cursor in response to a further touch operation. The speed, ISO sensitivity, aperture, exposure compensation value, etc.) may be changed or the operation (enlargement / reduction, fast forward, etc. of the reproduced image) may be performed.

The OTP may be incorporated into an operating member other than the button. For example, a touch panel, a joystick, a rotary dial, and the like.

Each of the above-described examples is only a representative example, and various modifications and changes can be made to each of the examples in carrying out the present invention.

1-6 Optical Tracking Pointer (OTP)
80a-80d AF-ON button 80f Detection surface 103,105 Shutter button 880 Optical member 880a Detection lens 881 Light source 882 Light receiving sensor

Claims (8)

An electronic device that has an optical input device
The optical input device is
The detection surface and
A light source that emits illumination light that passes through the detection surface and illuminates a contact object that comes into contact with the detection surface.
An optical member having an imaging optical unit that forms an image of the reflected light that is reflected by the contact object and transmitted through the detection surface among the illumination lights.
It has a light receiving sensor that photoelectrically converts the optical image of the contact formed by the reflected light.
The detection surface has a concave curved surface shape that is recessed from the peripheral portion of the exterior surface of the electronic device that surrounds the detection surface.
An electronic device characterized in that the optical axis position of the imaging optical unit is deviated from the central position or the most recessed position on the detection surface. The electronic device has a display unit capable of displaying images and information.
The first aspect of the present invention is characterized in that the control means for controlling the display on the display unit is provided in response to detecting the movement of the contact object on the detection surface by using the output from the light receiving sensor. Described electronic device. The electronic device according to claim 1 or 2, wherein the peripheral portion is adjacent to the outer edge of the detection surface. The electronic device according to any one of claims 1 to 3, wherein the amount of depression of the detection surface from the peripheral portion is 0.015 mm or less. When the diameter of the detection surface is α, the radius of curvature SR (mm) of the concave curved surface shape is
SR ≧ 6.25α ² + 0.01
The electronic device according to any one of claims 1 to 4, wherein the electronic device satisfies the above-mentioned condition. The radius of curvature SR is
SR ≧ 8.33α ² +0.0075
The electronic device according to claim 5, wherein the electronic device satisfies the above-mentioned condition. The electronic device according to any one of claims 1 to 6, wherein the peripheral portion has a convex shape in which the amount of protrusion outward toward the outer edge of the detection surface is large. The electronic device according to any one of claims 1 to 7, wherein the peripheral portion is satin finished.