Electronic apparatus

1 . An electronic apparatus comprising:

an operation member that is rotationally operable;

a rotation detection substrate provided with a rotation detector configured to detect rotation of the operation member;

a capacitance detector provided inside the operation member and configured to output a detection signal in accordance with capacitance;

a signal transfer unit configured to transfer the detection signal to the rotation detection substrate; and

a touch operation detector to which the detection signal is input through the rotation detection substrate, the touch operation detector being configured to detect a tap operation and a slide operation as a touch operation onto an outer surface of the operation member based on change in the detection signal due to the touch operation;

wherein part of the operation member is an operable portion capable of the touch operation onto the outer surface, and the capacitance detector provided inside the operable portion includes a plurality of electrodes adjacent to each other, and

wherein the touch operation detector

compares capacitance of a first adjacent electrode and capacitance of a second adjacent electrode, the first adjacent electrode being provided adjacent on a first side of an electrode having maximum capacitance among the plurality of electrodes, the second adjacent electrode being adjacently provided on a second side opposite the first side, and

detects the tap operation onto a range on the first side of the operable portion in a case where the capacitance of the first adjacent electrode is smaller than the capacitance of the second adjacent electrode, and detects the tap operation onto a range on the second side of the operable portion in a case where the capacitance of the second adjacent electrode is smaller than the capacitance of the first adjacent electrode.

2 . The electronic apparatus according to claim 1 , wherein the capacitance detector is provided in contact with, directly or through a conductive member, an inner surface of the operation member on a back side of the outer surface.

3 . The electronic apparatus according to claim 1 , further comprising a flexible substrate including the capacitance detector and disposed inside the operation member,

wherein the signal transfer unit transfers the detection signal from the flexible substrate to the rotation detection substrate.

4 . The electronic apparatus according to claim 1 , wherein in the operation member,

the outer surface is an outer circumferential surface about a rotation center of the operation member, and

the capacitance detector is disposed along an inner circumferential surface on a back side of the outer circumferential surface.

5 . The electronic apparatus according to claim 1 , wherein the rotation detector is a conductive pattern that a conductive member configured to rotate together with the operation member contacts, or is a sensor configured to detect the rotation of the operation member in a non-contact manner.

6 . The electronic apparatus according to claim 1 , wherein the signal transfer unit is a conductive member that contacts a conductive pattern provided on the rotation detection substrate, or is a communication unit configured to perform non-contact communication with the rotation detection substrate.

7 . The electronic apparatus according to claim 1 ,

wherein the touch operation detector detects the slide operation based on sequential change in the detection signal from the plurality of electrodes.

8 . The electronic apparatus according to claim 1 , wherein the touch operation detector detects the tap operation onto the range on the first side and the range on the second side in a case where a difference between the capacitance of the first adjacent electrode and the capacitance of the second adjacent electrode is equal to or larger than a predetermined value.

9 . The electronic apparatus according to claim 1 , wherein the touch operation detector detects the tap operation onto a range between the range on the first side and the range on the second side of the operable portion in a case where a difference between the capacitance of the first adjacent electrode and the capacitance of the second adjacent electrode is smaller than a predetermined value.

10 . The electronic apparatus according to claim 1 , wherein, the outer surface of the operation member includes a first region of a shape or material that prevents slipping of a finger performing a rotational operation onto the operation member, and a second region in which a finger performing the slide operation is more likely to slip than in the first region.

11 . The electronic apparatus according to claim 1 , wherein the outer surface of the operation member includes a protrusion engageable with a finger performing a rotational operation onto the operation member, and a smooth surface on which a finger performing the slide operation is slidable.

12 . The electronic apparatus according to claim 1 , further comprising:

an image sensor configured to convert an optical image of an object into an electric signal; and

a processing unit configured to generate an image by using the electric signal from the image sensor.