JPH06138532A - Camera - Google Patents

Abstract

PURPOSE:To reduce an operating space, and to improve the reliability of an operating member and operating sense by providing the operating member detecting operating pressure on a camera, detecting the operating pressure and inputting each information. CONSTITUTION:As to a two-dimensional pressure sensor 1; a row side electrode group 4 obtained by arranging plural electrodes in parallel on the sheet 2 of a polyester film and coating a surface with special ink 3 is opposingly stuck to a column side electrode group 7 obtained by arranging the plural electrodes on the sheet 5 in parallel in a state where they cross orthogonally with the row side electrode, and coating the surface with the special ink 6. The row side electrode group 4 and the column side electrode group 7 are periodically scanned on and under the thin film of the special ink 6, and the electric resistance value of each intersection is detected. The two-dimensional pressure sensor 1 is cylindrically formed to be provided on the external periphery of a lens barrel, so that pressure distribution in an external peripheral direction and the pressure distribution in an optical axis direction can be detected. That is, the focusing driving information of a lens can be inputted based on the change of the pressure distribution in the external peripheral direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera using a pressure sensor as an input member.

[0002]

2. Description of the Related Art A camera using a mechanical switch, a conductive rubber switch, a touch switch or the like as an input member is known.

However, the mechanical switch and the conductive rubber switch require a stroke for operation, and therefore dust, water droplets, etc. enter to cause a malfunction, and a space for an operation stroke is required. In addition, there is a problem that the operating force is difficult to adjust and the operation feeling is bad. On the other hand, the touch switch has a problem that it does not have a feeling of operation and cannot be used for a release switch that requires a two-step stroke.

An object of the present invention is to reduce the operation space by using a pressure sensor as an input member of a camera, and
It is to improve reliability and operation feeling.

[0005]

According to a first aspect of the present invention, there is provided a camera having an operating member for detecting an operating pressure, and various kinds of information are input according to a change in the detected operating pressure. In the camera of the second aspect, the operation member has a plurality of pressure sensors, and various information is input according to changes in the detected pressure distribution. The camera of claim 3 is
A plurality of pressure sensors of the operating member are arranged in a plurality of different directions, and different information is input according to changes in the pressure distribution in each direction. According to a fourth aspect of the present invention, the operating member for detecting the operating pressure is formed in a cylindrical shape and is provided on the outer periphery of the lens barrel, and the driving information of the lens is input by changing the pressure distribution. According to another aspect of the camera of the present invention, an operating member for detecting an operating pressure is formed in a cylindrical shape and provided on the outer circumference of the lens barrel, and the lens driving information corresponding to each direction is input by changing the pressure distribution in a plurality of directions. It was done like this. According to a sixth aspect of the present invention, there is provided a camera having an operation member for detecting an operation pressure, and different information is input according to the detected operation pressure. In the camera of claim 7, an operation member for detecting an operation pressure is applied to a shutter release button, and a half-pressed state and a full-pressed state are input according to the detected pressure. In the camera of claim 8, the pressure for determining the input of information is variable.

[0006]

A thin pressure sensor having a thickness of about 0.1 mm is used as the operating member, the number of pressure sensors and the arrangement pattern are set according to the type of the operating member, and various information of the camera is input.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a) is a perspective view showing the outline of a pressure sensor for detecting a two-dimensional pressure distribution according to an embodiment, FIG. 1 (b).
Is a sectional view thereof. This two-dimensional pressure sensor 1 has a plurality of electrodes arranged in parallel on a polyester film sheet 2 and a row-side electrode group 4 whose surface is coated with a special ink 3, and a plurality of electrodes on a polyester film sheet 5. It is arranged in parallel and orthogonal to the row-side electrodes, and is bonded to the column-side electrode group 7 whose surface is coated with the special ink 6 so as to face each other (for example, Tactile sensor I-SCAN product of Nitta Co., Ltd.). Catalog S-
I-1). The electric resistance value of the thin curtain of the special ink 6 changes according to the magnitude of the applied force.

The pressure sensor has the characteristics shown in FIG. 2, and the resistance value decreases as the operating pressure increases. Two
The dimensional pressure sensor 1 includes a row side electrode group 4 and a column side electrode group 7 arranged in a matrix above and below a thin curtain of special ink 6.
Is periodically scanned and the two-dimensional pressure distribution is detected by detecting the electric resistance value at each intersection.

Although the above-mentioned pressure sensor is adapted to detect a two-dimensional pressure distribution, it is also possible to arrange a plurality of pressure sensors in parallel to detect a one-dimensional pressure distribution. Furthermore, one pressure sensor may be used to input various types of information, or a plurality of information may be input according to the pressure detected by one pressure sensor.

FIG. 3 shows a camera provided with an operating member for detecting an operating pressure. Reference numeral 11 denotes a shutter release button, the cross-sectional shape of which is shown in FIG. In FIG. 4, 21 is a rubber push button, and 22 is a cover. The push button 21 and the cover 22 are adhered to each other and waterproofed. Further, 23 is a single pressure sensor, and 24 is a substrate. The pressure sensor 23, as shown in FIG.
Since the resistance value becomes R1 when the operating pressure is P1, when the resistance value R1 is detected, the shutter release button 11
Is half pressed. Since the resistance value becomes R2 when the operation pressure is P2, it is assumed that the shutter release button 11 is fully pressed when the resistance value R2 is detected. Normally, photometry and distance measurement are performed when the shutter release button 11 is pressed halfway, and film exposure is performed when the shutter release button 11 is fully pressed.

The pressures P1 and P2 for determining whether the shutter release button 11 is half-pressed or fully-pressed are variable by changing the respective detection resistance values R1 and R2. You can improve your senses.

Reference numeral 12 denotes a lens adjusting ring, which is formed on the outer circumference of the lens barrel 13 by forming the two-dimensional pressure sensor 1 shown in FIG. 1 in a cylindrical shape, and the pressure distribution in the outer circumference direction θ and the optical axis direction Z.
And the pressure distribution of. Focusing drive information of the lens is input by a change in the pressure distribution in the outer peripheral direction θ. When the lens adjusting ring 12 is grasped by hand, a pressure distribution shown by a solid line in FIG. 5 is detected in the outer peripheral direction θ.
For example, when the hand holding the lens adjustment ring 12 is slid clockwise, the pressure distribution in the outer peripheral direction θ changes from the solid line shown in FIG. 5 to the broken line. By detecting such a change in the pressure distribution, it is determined that the clockwise rotation instruction of the photographing lens is made, and the photographing lens driving device (not shown) drives the photographing lens to the short distance side.

On the other hand, the zooming drive information of the lens is input by the change of the pressure distribution in the optical axis direction Z. When the lens adjustment ring 12 is grasped by hand, the pressure distribution as shown by the solid line in FIG. 6 is detected in the optical axis direction Z. For example, when the hand holding the lens adjusting ring 12 is slid toward the front in the optical axis direction Z, the pressure distribution in the optical axis direction Z changes from the solid line shown in FIG. 6 to the broken line. Detecting such a change in the pressure distribution, it is determined that an instruction to move the zoom lens to the wide side has been given, and the zoom lens driving device (not shown) drives the zoom lens to the wide side.

As described above, since the pressure sensor is used as the operation member of the camera such as the shutter release button and the lens adjustment ring to detect the operation pressure and input various information, the operation space is reduced and the operation member is reduced. The reliability and operational feeling of can be improved.

In the above-mentioned embodiment, the pressure sensor is used for the shutter release button and the lens adjusting ring, but the pressure sensor can be used for the operation member other than the above.

In the structure of the above embodiment, the shutter release button 11 and the lens adjusting ring 12 constitute an operating member for detecting the operating pressure.

[0017]

As described above, according to the present invention, since the operation member for detecting the operation pressure is provided in the camera and the operation pressure is detected and various information is input, the operation space is reduced, The reliability and operation feeling of the operation member can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a pressure sensor according to an embodiment.

FIG. 2 is a diagram showing input / output characteristics of a pressure sensor.

FIG. 3 is a diagram showing a camera including an operation member for detecting an operation pressure.

FIG. 4 is a cross-sectional view of a shutter release button.

FIG. 5 is a diagram showing pressure distribution in the outer peripheral direction of the lens adjustment ring.

FIG. 6 is a diagram showing pressure distribution in the optical axis direction of the lens adjustment ring.

[Explanation of symbols]

 1 2 dimensional pressure sensor 2, 5 sheet 3, 6 special ink 4 row side electrode group 7 column side electrode group 11 shutter release button 12 lens adjustment ring 13 lens barrel 21 push button 22 cover 23 pressure sensor 24 substrate

Claims (8)

[Claims] 1. A camera having an operating member for detecting an operating pressure, and inputting various information by a change in the detected operating pressure. 2. The camera according to claim 1, wherein the operation member has a plurality of pressure sensors, and various kinds of information are input according to changes in the detected pressure distribution. 3. The camera according to claim 2, wherein the plurality of pressure sensors of the operation member are arranged in a plurality of different directions, and different information is input according to a change in pressure distribution in each direction. A camera to do. 4. The camera according to claim 2, wherein the operating member is formed in a cylindrical shape and is provided on the outer circumference of the lens barrel, and the driving information of the lens is input by changing the pressure distribution. . 5. The camera according to claim 3, wherein the operation member is formed in a cylindrical shape and provided on the outer circumference of the lens barrel, and the lens drive information corresponding to each direction by changing the pressure distribution in a plurality of directions. A camera characterized by inputting. 6. A camera having an operating member for detecting an operating pressure, and inputting different information according to the detected operating pressure. 7. The camera according to claim 6, wherein the operation member is a shutter release button, and a half-pressed state and a full-pressed state are input according to detected pressure. 8. The camera according to claim 1, wherein the pressure for determining the input of the information is variable.