摘要:
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. A line of vision of the examinee in looking at the optical image reflected by the second deflecting optical element obliquely intersects a plane passing through the optical path defined by the optical group.
摘要:
To provide an ophthalmic apparatus capable of performing efficient measurement of a plurality of eye characteristics of an examinee's eye, which comprises a first measurement unit comprising a first measurement system for performing measurement of a first characteristic of the eye, a second measurement unit comprising a second measurement system for performing measurement of a second characteristic of the eye, a measurement unit in which the measurement units are placed such that heights of first and second measurement axes of the respective systems are different from each other, a movement mechanism unit moving the measurement unit in a vertical direction, and a control unit controlling the mechanism unit such that the height of the first measurement axis at the time of first measurement by the first measurement unit becomes almost the same as that of the second measurement axis at the time of second measurement by the second measurement unit.
摘要:
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.
摘要:
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 with a filter on which reflection reducing coating is coated.
摘要:
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.
摘要:
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. A first breakdown voltage obtained at a first junction between the second portion and the semiconductor substrate is lower than that obtained at a second junction between the back gate region and the semiconductor substrate. Furthermore, the field effect transistor includes an electrode formed on the insulator film and connecting the guard region and the back gate region via the first and second windows.
摘要:
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.
摘要:
A package (2) comprises a box body (4) with an open end (22) at the top, a tongue-lid (6) adapted to close the open end (22), rotatably connected to a rear edge of the open end (22) by a lid hinge (30), and an inner pack (8) enclosed in the box body (4). The inner pack (8) includes an envelope (13) enclosing tobacco items (10) and keeping the inner pack (8) airtight.
摘要:
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.
摘要:
The package (2) has an inner case (7) having a box body (6) with an open end (22) in an upper portion and a lid (4) that is connected to a first side edge of the open end (22) and turns about a lid hinge (24) to open/close the open end (22); and an outer slider (8) that is slidably fitted in a periphery of the inner case (7), the outer slider (8) having a contact flap (48) extending towards the inside of the outer slider (8) in an upper edge (50) of a first side wall (44) corresponding to the lid hinge (24). The inner case (7) includes a band-like member (34), which is connected to the lid (4) at the upper end thereof and has a folded flap (38) engageable with the contact flap (48) of the outer slider (8) in a lower end thereof. When the outer slider (8) is slid down in relation to the inner case (7), the folded flap (38) is engaged with the contact flap (48) and opens the lid (4).