Abstract: An ophthalmic apparatus capable of alignment in total automation and manual alignment with an examinee's eye comprising an ophthalmic examination unit, a unit detecting an alignment state of the examination unit with the eye, a main base, a mobile base on which the examination unit is mounted and moved horizontally on the main base through operation of a control member, driving mechanisms moving the examination unit vertically and horizontally with respect to the mobile base, means switching a mode between a manual mode of performing alignment of the examination unit with each eye in sequence through the operation and a fully automatic mode of performing the alignment through driving of the driving mechanisms, and a control unit controlling the driving based on the detection result which starts in the fully automatic mode the driving based on a predetermined trigger signal so as to perform the alignment.

Abstract: An ophthalmic apparatus comprises: a base; an examination part which includes an optical system for examining an eye of a patient and is placed to be movable horizontally on the base; and a fixing mechanism provided in the examination part and arranged to fix the examination part on the base; wherein the fixing mechanism comprises: an arm pivotally mounted to be turned in an up and down directions; a fixing member which is supported by the arm so that it is brought in contact with the base by downward turning of the arm and it is separated from the base by upward turning of the arm, the fixing member having large friction with respect to the base; and an operating member for turning the arm in the up and down directions, the operating member having a longer distance from a turning center of the arm to a position of the operating member than a distance from the turning center of the arm to a position of the fixing member.

Abstract: A production method for producing an electrode plate that can hold well the active material and producing a battery using the electrode plate. A production method for an electrode plate of a battery includes the steps of: forming at least one electrode plate prototype by forming a layer filled with an active material on a main surface of a plate-shaped core body; and infiltrating a liquid containing a resin and an organic solvent into at least part of a circumference of the layer filled with the active material. The applied liquid infiltrates into the circumferential region of the active material filling area, namely an outer edge of the layer and an area in its vicinity including the outer edge. The resin contained in the liquid enhances the bonding force between the conductive core body and the active material particles and between the active material particles.

Abstract: An ophthalmic apparatus comprises: a base; an examination part which includes an optical system for examining an eye of a patient and is placed to be movable horizontally on the base; and a fixing mechanism provided in the examination part and arranged to fix the examination part on the base; wherein the fixing mechanism comprises: an arm pivotally mounted to be turned in an up and down directions; a fixing member which is supported by the arm so that it is brought in contact with the base by downward turning of the arm and it is separated from the base by upward turning of the arm, the fixing member having large friction with respect to the base; and an operating member for turning the arm in the up and down directions, the operating member having a longer distance from a turning center of the arm to a position of the operating member than a distance from the turning center of the arm to a position of the fixing member.

Abstract: A slit-lamp biomicroscope which illuminates an eye to be examined with slit illumination light, the biomicroscope comprises an illumination optical system provided with an illumination light source and a slit plate of which slit width is adjustable, a plurality of types of filters each having a different optical characteristic which are inserted into, and removed from an optical path of the illumination optical system, a filter detection device for detecting a type of the filter being inserted in the optical path of the illumination optical system, a light amount change device for changing an amount of illumination light on a side of the illumination light source with respect to the slit plate and a control device for controlling the light amount change device such that the amount of illumination light is adjusted to an amount corresponding to the detected filter based on a detection result obtained by the filter detection device.

Abstract: An apparatus for visual acuity test of an examinee's eye comprises test chart presenting device for changing and presenting test chart to the examinee's eye, a switch for designating test chart to be presented by the test chart presenting means, a light delivery optical system for delivering luminous flux of test chart from the test chart presenting means to the examinee's eye, the light delivery optical system comprising a concave mirror for making the luminous flux of test chart optically from 4 m ahead of the examinee to infinit and a first reflection mirror for reflecting the luminous flux reflected the concave mirror to the examinee's eye, and reflecting angle adjusting device for adjusting reflection angle of the reflection mirror so as to fit to a height of the examinee's eye, a housing for internally mounting the test chart presenting means and the light delivery optical system, the housing having an aperture to allow the luminous flux of test chart pass therethrough and the aperture being provided wi

Abstract: An optometric apparatus includes an operating table and a vision test chart displaying device provided internally within the operating table. An optical group, including a plurality of reflection-type optical elements, are disposed within the operating table. The optical group repeatedly reflects an optical image of the vision test chart projected from the vision test chart displaying device along an optical path within said operating table. A first deflecting optical element reflects the optical image of the vision test chart reflected by the reflection-type optical element group outside the operating table in a first direction. A second deflecting optical element then reflects the optical image of the vision test chart reflected by the first deflecting optical element in a second direction toward the examinee's eyes.

Abstract: The inventive method and apparatus are based on the display of a striped target with constantly accurate contrast to the patient for finding a visual function disturbance associated with such eye diseases as glaucoma or diabetic repinopathy at their earlier stage. A sight target of striped pattern is formed on the screen having a uniform brightness, the striped target is oscillated in the direction orthogonal to the striped pattern while varying the contrast of striped target and showing it to the patient, and the threshold of the pattern contrast which can be recognized visually by the patient is measured.

Abstract: A field effect transistor includes a semiconductor substrate having a first conduction type and functioning as a drain of the field effect transistor, and a back gate region formed in the semiconductor substrate and having a second conduction type opposite to the first conduction type. The field effect transistor also includes a source region formed in the back gate region and having the first conduction type, an insulator film formed on the semiconductor substrate and having first and second windows, and a gate electrode covered by the insulator film and located so that a channel is formed in the back gate region. Further, the field effect transistor includes a guard region formed in the semiconductor substrate and located close to the back gate region. The guard region has the second conduction type, and has a first portion located on a first side of the guard region facing the back gate region and a second portion located on a second side opposite to the first side.