Abstract: The present application discloses an ophthalmic photographing device that enables easy detection of a pupil diameter. The present invention pertains to an ophthalmic photographing device that is provided with: an anterior ocular segment illumination means for illuminating an anterior ocular segment of an eye of a subject with invisible light; an imaging element that is sensitive to at least invisible light and that is for capturing an image of the eye of the subject; and a processing means for processing an image captured by the imaging element, wherein when an image of an index projected onto the anterior ocular segment fulfills a prescribed condition, the processing means starts detection of a pupil diameter of the eye of the subject using an image formed on the imaging element by means of light reflected from the anterior ocular segment that has been illuminated with the invisible light from the anterior ocular segment illumination means.

Abstract: A high frequency cable includes: a central conductor made from aluminum or an aluminum alloy; a covering layer made from copper covering the central conductor, and having a fiber-like structure in a longitudinal direction; and an intermetallic compound layer formed between the central conductor and the covering layer and having greater volume resistivity than the covering layer, wherein a cross-sectional area of the covering layer is 15% or less of an entire cross-sectional area including the central conductor, the intermetallic compound layer and the covering layer.

Abstract: A high frequency cable includes: a central conductor made from aluminum or an aluminum alloy; a covering layer made from copper covering the central conductor, and having a fiber-like structure in a longitudinal direction; and an intermetallic compound layer formed between the central conductor and the covering layer and having greater volume resistivity than the covering layer, wherein a cross-sectional area of the covering layer is 15% or less of an entire cross-sectional area including the central conductor, the intermetallic compound layer and the covering layer.

Abstract: There is provided a movable fuel cell apparatus comprising a movable housing, a power supply, and a fuel gas cylinder. The housing is divided into a front portion and a rear portion by a partition, and composed of a main housing body, a housing cover and a door. The main housing body has a front opening. The housing cover covers the upper portion of the front opening and the door is openably connected with the main housing body. The power supply included in the rear portion comprises a fuel cell for generating electric power by electrochemical reaction using fuel gas and air supplied. The fuel gas cylinder is placed removably in the front portion of the housing.