Abstract: In a displacement sensor, an illumination optical system, which converts laser light emitted from an emission unit into first converging light, and irradiates with the first converging light a detection space through which a target moves. An imaging optical system converts laser light reflected from the target into second converging light, and irradiates with the second converging light a light-receiving surface of a detection unit. The image of the emission unit into which the illumination optical system focuses the first converging light is displaced along the optical axis of the imaging optical system by a temperature change of the illumination optical system. The range in which the image is displaced is limited to be located either anterior to the front principal point of the imaging optical system, or posterior to the rear principal point of the imaging optical system.

Abstract: An optical glass having a small partial dispersion ratio (?g,F), while having a refractive index (nd) and Abbe number (?d) within desired ranges, is obtained. The optical glass, in mass %, comprises 10.0 to 70.0% of an SiO2 component, 1.0 to 50.0% of an Nb2O5 component, and 1.0 to 30.0% of an Na2O component, and has a refractive index (nd) of 1.62 to 1.75, an Abbe number (?d) of 30 to 42, and a partial dispersion ratio (?g,F) of no greater than 0.594.

Abstract: An optical glass having a small partial dispersion ratio (?g,F), while having a refractive index (nd) and Abbe number (?d) within desired ranges, is obtained. The optical glass, in mol %, comprises 20.0 to 65.0% of an SiO2 component, 1.0 to 25.0% of an Nb2O5 component, and 1.0 to 35.0% of an Na2O component, and has a refractive index (nd) of 1.62 to 1.75, an Abbe number (?d) of 30 to 42, and a partial dispersion ratio (?g,F) of no greater than 0.594.

Abstract: The flat bottle includes a cylindrical body and a bottom closing a lower opening of the body, and is formed in a flattened shape in lateral cross-section having a major axis (La) and a minor axis (Sa). A bottom wall of the bottom includes a rising circumferential wall extending upward; an annular movable wall projecting inward from the rising circumferential wall in a bottle radial direction; and a recessed circumferential wall extending upward from the movable wall. The movable wall is movable around a connected portion with the rising circumferential wall. The length of the bottom along the major axis is 1.2 to 2.0 times the length of the bottom along the minor axis. The length of the movable wall along the major axis is 0.8 to 2.5 times the length of the movable wall along the minor axis.

Abstract: The flat bottle includes a cylindrical body and a bottom closing a lower opening of the body, and is formed in a flattened shape in lateral cross-section having a major axis (La) and a minor axis (Sa). A bottom wall of the bottom includes a rising circumferential wall extending upward; an annular movable wall projecting inward from the rising circumferential wall in a bottle radial direction; and a recessed circumferential wall extending upward from the movable wall. The movable wall is movable around a connected portion with the rising circumferential wall. The length of the bottom along the major axis is 1.2 to 2.0 times the length of the bottom along the minor axis. The length of the movable wall along the major axis is 0.8 to 2.5 times the length of the movable wall along the minor axis.

Abstract: A constant velocity joint includes a cylindrical outer cup which has three guide grooves on an inner wall surface thereof, and an inner member which is housed inside of the aforementioned outer cup and has three trunnions. The aforementioned guide grooves are formed to have a large width and to be close to the center of the aforementioned outer cup, and the aforementioned trunnions are formed to have a large width corresponding to the aforementioned guide grooves. Further, annular rollers are mounted on the periphery of the trunnions, and the periphery surfaces of the aforementioned rollers contact rolling surfaces of the aforementioned guide grooves.

Abstract: An optical glass is provided that includes a refractive index (nd) of no less than 1.75 and an Abbe number (vd) of no less than 10 as optical constants. A Bi2O3 content is no less than 10% by weight to no more than 80% by weight. The content of SiO2 is lower than the content of B2O3. The total content of SiO2+B2O3 is from no less than 1% by weight to no more than 60% by weight. The content of RO is from no less than 0.1% by weight to no more than 50% by weight. R represents one or more elements selected from the group consisting of Zn, Ba, Sr, Ca, and Mg. The optical glass has at least one of the properties of being substantially free from opacification and/or being substantially devitrified within the glass body under the conditions of a reheating testing.

Abstract: The present invention provides optical glasses containing Bi2O3 in which the optical glasses have at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body during reheating steps in production processes, superior chemical durability, and free from black coloring. The optical glass has a refractive index (nd) of no less than 1.75 and an Abbe number (?d) of no less than 10 as optical constants. The optical glass contains Bi2O3 in a content from no less than 10% by weight to less than 90% by weight, and has at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body under the conditions of a reheating test (a).

Abstract: A laser scanning device having a light emitting element, an optical element for shaping a laser beam emitted from the light emitting element, a radiator which holds the light emitting element, and a holder to which the radiator and the optical element are fixed. The radiator is planar extending from a flange of the light emitting element. The radiator and the holder are located with a specified space in-between, and resin columns are placed in the specified space. After the radiator holding the light emitting element is positioned in relative the holder in three axial directions, the resin columns are hardened. After the resin columns are hardened, the holder is fixed in a housing.

Abstract: Optical glass containing bismuth oxide having good defoamability. The Optical glass contains, as % by mass, from 10 to less than 90% of a Bi2O3 component and at least 0.1% of a TeO2 and/or SeO2 component. The optical glass is on Grade 4 to Grade 1 in “JOGIS12-1994, Method for Measuring Bubbles in Optical Glass”. By controlling the amount of RO component (R is at least one selected from a group consisting of Zn, Ba, Sr, Ca, Mg) and Rn2O component (Rn?Li, Na, K, Cs), the clarifying time may be shortened.

Abstract: An optical glass is provided that includes a refractive index (nd) of no less than 1.75 and an Abbe number (vd) of no less than 10 as optical constants. A Bi2O3 content is no less than 10% by weight to no more than 80% by weight. The content of SiO2 is lower than the content of B2O3. The total content of SiO2+B2O3 is from no less than 1% by weight to no more than 60% by weight. The content of RO is from no less than 0.1% by weight to no more than 50% by weight. R represents one or more elements selected from the group consisting of Zn, Ba, Sr, Ca, and Mg. The optical glass has at least one of the properties of being substantially free from opacification and/or being substantially devitrified within the glass body under the conditions of a reheating testing.

Abstract: The present invention is that, in a glass passage where it is usual that the flow rate near the center tends to become high, stirring effect for the glass flow is enhanced whereby temperature distribution is made uniform and generation of stria and devitrification is reduced. As a result, there is provided a passage by which glass blocks of highly refractive glass or low-Tg glass in recent years where selection of molding conditions is very difficult are able to be obtained easily and in high quality. Another object is to provide a passage by which simple control in a short distance is made possible whereby miniaturization of the device is possible even in the conventional glass. A passage which is connected to a melted glass vessel and flows out the melted glass which is characterized in that, in the inner wall, the above-mentioned passage has a control board for controlling the flow of the melted glass.

Abstract: A laser scanning device having a light emitting element, an optical element for shaping a laser beam emitted from the light emitting element, a radiator which holds the light emitting element, and a holder to which the radiator and the optical element are fixed. The radiator is planar extending from a flange of the light emitting element. The radiator and the holder are located with a specified space in-between, and resin columns are placed in the specified space. After the radiator holding the light emitting element is positioned in relative the holder in three axial directions, the resin columns are hardened. After the resin columns are hardened, the holder is fixed in a housing.

Abstract: Optical glass containing bismuth oxide having good defoamability. The Optical glass contains, as % by mass, from 10 to less than 90% of a Bi2O3 component and at least 0.1% of a TeO2 and/or SeO2 component. The optical glass is on Grade 4 to Grade 1 in “JOGIS12-1994, Method for Measuring Bubbles in Optical Glass”. By controlling the amount of RO component (R is at least one selected from a group consisting of Zn, Ba, Sr, Ca, Mg) and Rn2O component (Rn=Li, Na, K, Cs), the clarifying time may be shortened.

Abstract: The present invention provides optical glasses containing Bi2O3 in which the optical glasses have at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body during reheating steps in production processes, superior chemical durability, and free from black coloring. The optical glass has a refractive index (nd) of no less than 1.75 and an Abbe number (?d) of no less than 10 as optical constants. The optical glass contains Bi2O3 in a content from no less than 10% by weight to less than 90% by weight, and has at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body under the conditions of a reheating test (a).

Abstract: A biphenyl derivative represented by the following formula (I) or a pharmacologically acceptable salt thereof: wherein R1, R2, R3, R4, and R5 are defined in the specification, is clinically useful for treating and ameliorating mental disorders such as cerebrovascular disorder, aggressive behavior due to senile dementia, mental excitation, poriomania, delirium, hallucination, hyperkinesia, schizophrenia, emotional disturbance, depression, neurosis, psychophysiologic disorder and anxiety neurosis. The compounds exhibit dopamine 2 receptor antagonism and/or serotonin 2 receptor antagonism.

Abstract: A biphenyl derivative represented by the following formula (I) or a pharmacologically acceptable salt thereof: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are defined in the specification, is clinically useful for treating and ameliorating mental disorders such as cerebrovascular disorder, aggressive behavior due to senile dementia, mental excitation, poriomania, delirium, hallucination, hyperkinesia, schizophrenia, emotional disturbance, depression, neurosis, psychophysiologic disorder and anxiety neurosis. The compounds exhibit dopamine 2 receptor antagonism and/or serotonin 2 receptor antagonism.

Abstract: A constant velocity universal joint having a guide groove with a plane section and a rolling surface, an outer roller having an outer circumferential surface formed to have a linear cross section corresponding to the rolling surface and being displaceable along the rolling surface, a holder having an upper end formed to be capable of abutting against or being separated from the plane section, an expanded section having a curved and/or flat configuration and protruding toward a trunnion, and a curved section for making point-to-point contact with the expanded section.

Abstract: A constant velocity universal joint includes a plurality of trunnions formed to have a spherical configuration and expanding toward guide grooves, cylindrical holders for surrounding the trunnions, to which roller members displaceable along said guide grooves are externally fitted, and cutouts formed on surfaces of the trunnions.