Minolta Camera Kabushiki Kaisha

Minolta Company, Ltd.

Panasonic Corporation

Other

Matsushita Electric Works, Ltd.

Minolta Camera Co., Ltd.

Kenji Tsuji

Nobuyuki Taniguchi

Takehiro Katoh

Hiroshi Ootsuka

Masaaki Nakai

Akihiko Fujino

Toshihiko Ishimura

Hiroshi Hosomizu

Masayasu Hirano

Yoshihiko Azuma

Naohiro Kageyama

Hiroyuki Okada

Takanobu Omaki

Shuji Izumi

Tsutomu Ichikawa

Yasuteru Yamano

Yasuaki Serita

Makoto Kamiya

Masanori Minamio

Norio Ishikawa

Sadafusa Tsuji

Mashio Kitaura

Tetsushi Nishio

Hidehiko Fujii

Toshihito Kido

Keiji Yamazaki

Masayuki Nakasa

Masayuki Yoshii

Kenji Ishibashi

Masayuki Ueyama

Katsuyuki Nanba

Reiji Seki

Ikushi Nakamura

Toshio Yamaki

Satoshi Hamada

Takahisa Shimada

Hidekazu Nakajima

Tatsuya Suzuki

Hisao Yabu

Masaaki Makai

Masaki Nakai

Akinori Hirabayashi

Takehiro Katch

A lead frame is buried in mold resin to form a mold structure. A wide blade is used to make an indentation having an alignment step in the mold structure. Then, a narrow blade is used to split the mold structure. At the outer perimeter portion of a base which is a separate part separated from the mold structure, an alignment step is formed. Due to the alignment step, an optical element, such as a mirror tube of an imaging optical system, or the like, is readily and quickly attached.

Optical device and production method thereof

A camera has a release button, a shutter which operates upon depression the release button, light emitting diode that emits light used to record information on the film, a power source, a switch that closes in response to the operation of the release button to provide power to the light emitting diode, the switch having a first contact point connected to the power source and a second contact point connected to the light emitting diode, and a selecting member movably supported between a first position at which the selecting member prevents the closing of the first and second contact points and a second position at which the selecting member does not prevent the closing of the first and second contact points.

Camera

A camera system comprises a brightness measuring circuit, a exposure line choosing circuit, an operable switch, a film driver and a film driving mode selector. The brightness measuring circuit measures brightness of a photographic scene to send a brightness value. The exposure line choosing circuit chooses one of a plurality of exposure lines in which each lines selects a combination of an aperture value and a shutter speed value at each brightness value. The film driver drives a film in either of a first mode in which the film is wound only one frame in response to the operation of the operable switch and a second mode in which the film is wound frame by frame continuously as long as the operable member is operated. The film driving mode selector selects one of the modes in accordance with the exposure line chosen by the choosing circuit. In the camera system, a photographer may only select the exposure mode in accordance with his intention and purpose in photography, and then the film driving mode corresponding to the intention and purpose is automatically selected.

Camera system

A camera is detachably mountable with a film cartridge which is provided with a photographic film having a number of successive frames and a film state indicator operable to indicate an exposed state that the film is already exposed, and includes: a film feeding device which feeds the film in a first direction and in a second direction opposite to the first direction; a recording device which records a specified data on the film when the film is being fed in the first direction; a judging device which judges whether the specified data is recorded on the film when the film is being fed in the second direction; and a setting device which is responsive to the judging device and associated with the film state indicator of the film cartridge, and is operable to cause the film state indicator to indicate the exposed state when the specified data is judged not to be recorded on the film.

Camera provided with a magnetic recording device

A microcomputer provided in a camera body uses a data signal read by sensors facing the data disk of a film cartridge as a positional signal to set the stop position of the spool for providing exposed/unexposed indication to the film. The voltage of the power supply of the camera is detected to modulate a pulse duration by which the number of rotations of the motor can be kept constant in rewinding the film. The sensors are disposed upstream in the rotational direction of the data disk by a certain angle .theta. with respect to the point at which the spool is stopped in order to prevent the dislocation between the display mark of the cartridge and the pointing mark of the data disk. The microcomputer discriminates whether or not data has been read. The mechanism for feeding the film is controlled to set the film at a predetermined position after the decision that the data has been read.

System for providing an accurate indication whether film is exposed or

A camera, which uses a film cartridge having a film exposure status display, comprises an E2PROM. The E2PROM stores the fact that the film status determination operation is underway when film status determination operation is underway. When a power supply is removed while the film status determination is operating and then the power supply is mounted, the camera operates an initial process. The film exposure status display is set in `exposed` because the E2PROM holds that the film status determination operation is underway. A camera is .provided that deems the film in the film cartridge to have been exposed and does not perform exposure if the power supply is cut off while the determination of the film status of the film in the film cartridge mounted in the camera is underway.

A camera includes: a data generating device which generates a plurality of kinds of data; a data designating device which designates a kind of data to be recorded among the plurality of kinds of data; a record data setting device which sets the kind of data designated by the data designating device as record data when the data designating device designates it, and sets a predetermined kind of data as record data when the data designating device designates no kinds of data; and a recording device which records the set record data on a film mounted on the camera.

A device determines an aperture value Av and a time value Tv for controlling exposure, on the basis of the detected focal length, the detected image magnification and brightness of an object. First, a type of photography is determined according to the focal length (f) and a image magnification .beta., on the basis of fuzzy logic. Then, a combination of an aperture value Av and a time value Tv which are proper for the so-determined type of photography is automatically determined. The combination can be changed by a manual operation. If the combination is changed, a display showing a depth of field corresponding to the changed aperture value Av is indicated.

Automatic exposure controlling device for a camera

A camera system capable of wireless flash photographing, comprising a camera and an external flash unit, wherein the external flash unit transmits a discriminating data such as a synchronized shutter speed with a wireless flash photographing, and the camera receives the discriminating data. According to the received data, a phototaking operation of the camera is executed.

Camera system capable of wireless flash photographing

A flash photographing system includes a camera body, a flash controller connected to the camera body and three flash devices: the first flash device is directly mounted on the camera body; the second flash device is mounted on the flash controller; and the third flash device is connected through a suitable cord to the flash controller. A microcomputer is provided in the camera body and also in each of the flash devices so as to control the three flash devices in various different modes of operations, such as simultaneous flash mode, sequence flash mode, and yet providing an appropriate amount of light for the proper exposure.

Flash photographing system

Growing community of inventors

Osaka, Japan

Kenji Tsuji