Kyocera Corporation

Takayoshi Morooka

Toshikatsu Atsuta

Masao Tsujimura

Hirotaka Shiroshita

Mamoru Akiyama

Nobuaki Murai

Toshimichi Yasuda

Takayuki Kubodera

Kazuo Ishikawa

Toshihiro Takimoto

Eiichi Mochizuki

Seiji Yoshikawa

Masanori Onizawa

Shizuo Nakamura

Masaki Noda

Masamichi Hirooka

To provide a fabricating method of an optical communication part in which an optical element is fixed within a hollow holder, including the step of fixing an optical element by holding the optical element in a hollow portion of a holding portion of a metal made holder and calking a portion of the holder; wherein, the step includes calking the holder by heating the holder to a temperature higher than a operating temperature or cooling the holder to a temperature lower than the operating temperature depending on whether or not a thermal expansion coefficient of the holder is larger or smaller than that of the optical element. When the thermal expansion coefficient of the holder is larger than that of the optical element, and a heating temperature in calking is set within the range of 85&deg; C. to 95&deg; C., while when the thermal expansion coefficient of the holder is larger than that of the optical element the cooling temperature of the holder upon the calking is set within the range of &minus;50&deg; C. to &minus;40&deg; C.

Optical communication part and method of fabricating the same

A constant speed driving apparatus comprises a starting means for starting a control unit, the first pulse-generating means for generating the first pulse signal with a predetermined frequency, a driving mechanism for driving a load, the second pulse-generating means for generating the second pulse signal corresponding to driving speed of the driving mechanism, and the control unit for controlling the driving mechanism on the basis of the first and second pulse signals.

Apparatus for controlling the adjustment rate of a lens assembly

In a camera whose camera body is extended along the optical axis, the camera body has a camera body gripping recess at a position where the index, middle, ring and little fingers ae placed when the operator holds the camera with the hand from below so that the operator can hold the camera stable with the hand for a long period of time.

Camera

An autofocus camera has a photographing lens, a shutter normally urged in a shutter opening direction and arranged to be opened and closed after it has once been closed prior to a photographing operation, a mirror movable between a view position which allows light passing through the lens and the shutter to be transmitted to a viewfinder optical system and an exposure position which allows light passing through the photographing lens and the shutter to be transmitted to the surface of a film, and an automatic focus adjustment apparatus for automatically adjusting the position of the lens. The autofocus camera has a motor-drive control circuit arranged to close the shutter prior to a photographing operation, move the mirror from the view position to the exposure position, cause the shutter to be opened and closed for exposure of the film, cause the film to be wound immediately after completion of the operation of the shutter, move the mirror from the exposure position to the view position, cause the shutter to be opened after the winding of the film has temporarily been stopped, and restart the winding of the film.

Autofocus camera having automatic focus adjustment apparatus

Growing community of inventors

Kitami, Japan

Takayoshi Morooka