Olympus Optical Company, Ltd.

Toshihiko Imai

Mitsumasa Okubo

Akira Watanabe

Yasushi Odanaka

Mitsumasa Okubu

This invention discloses a device for rotating a traveling-wave-type ultrasonic motor having an electromechanical conversion device to which two-phase AC signals generated from a DC power source and having a phase difference of 90 degrees are supplied, the device for rotating a traveling-wave-type ultrasonic motor comprising:

Circuit for rotating ultrasonic motor

The present invention provides a printed circuit board installed in a lens barrel with an imaging optical system. In an installed state, the printed circuit board comprises: a ring-shaped portion disposed substantially perpendicular to the optical axis of the imaging optical system wherein an aperture is provided at a central portion of the ring-shaped portion so that an imaging light beam may pass through the aperture; and an extending board portion that extends outward from the ring-shaped portion wherein electrical components may be mounted on the surface of the extending board portion. After the ring-shaped portion and the extending board portion have been bent, the above-described flexible printed circuit board is inserted into the lens barrel in such a manner that the plane of the extending board portion on which the electrical components are mounted is parallel to the optical axis of the imaging optical system. This printed circuit board provides high efficiency electrical interconnections in the lens barrel.

Printed circuit board

Disclosed is a camera loaded selectively with either a first film having perforations formed in side edges or a second film having the same width as that of the first film and no perforations formed in side edges. The camera comprises: a picture size changeover device for selectively setting a photographing picture frame to a first picture size corresponding to the first film and a second picture size corresponding to the second film; a first lens installable and removable in and from the camera and having an image circle corresponding to the first picture size; a second lens installable and removable in and from the camera and having an image circle corresponding to the second picture size; and a device for judging which lens, the first lens or the second lens, to install in the camera. When the judging device judges that the first lens is installed in a state where the picture size is set to the second picture size, the picture size is so set as to be forcibly changed over to the first picture size.

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Tokyo, Japan

Toshihiko Imai