Minolta Camera Kabushiki Kaisha

Ichiro Yoshiyama

Seiji Yamada

Mashio Kitaura

Nobuyuki Taniguchi

Masataka Hamada

Norio Ishikawa

Kohtaro Hayashi

Kazuo Kimura

Yoshio Yuasa

Yukio Maekawa

Keiji Yamazaki

Makoto Kamiya

Yoshiharu Ohta

Katsuhito Akagi

Haruyuki Nagano

In a telescope, the adjustment order is limited so that dioptric power adjustment is made after adjustment of a distance between a pair of optical systems is completed. A pupil distance and a dioptric power correction amount are stored in a memory for every user. When a user uses the telescope, his or her pupil distance and dioptric power correction amount are read out from the memory to automatically make adjustment.

Binocular system with automatic diopter power adjustment

In an electronic flash device for use in a still camera, a calculation circuit means calculates a ratio of the amounts of light to be emitted by a plurality of flash light tubes on the basis of color temperature information and control circuit means controls the emission of light of the respective flash light tubes in such a manner that the ratio of light amount emitted from the respective flash light tubes corresponds to the ratio calculated by the calculation circuit means.

Electronic flash device

An exposure meter for use in photography which includes means for measuring brightness at a plurality of places in a scene to be measured for exposure, means for calculating frequency distribution of the brightness which divides brightness value into many stages and counts frequency of occurrence of brightness at each of the stages, and means for calculating, under designated conditions, position whereat film latitude is to be present within the width of the brightness distribution.

Exposure meter

An exposure meter provides a display indicating the brightness of selected portions of a scene to be photographed. In one embodiment, a photometering block including a plurality of light sensitive elements is employed, and there is an automatic fixed display indicating the brightness level of the brightest and the darkest portions of the objective scene together with a display of a median value. Another embodiment employs a spot photometering device with only one light sensitive element, and a display of the brightness level of different portions of the scene selected by the photographer.

Growing community of inventors

Kobe, Japan

Ichiro Yoshiyama