Abstract: A hydraulic oil control valve includes a sleeve, a spool and a spring. The spool is received at an inside of the sleeve and is configured to be reciprocated. The spring is configured to be seated against a spring seat of the sleeve and is configured to apply a preload to the spool. The sleeve has a stepped portion, which has a spool contact surface for limiting movement of the spool toward the spring seat, and a protrusion, which is located at a center of the spring seat and protrudes toward an opening of the sleeve. The protrusion has a sloped peripheral surface. The protrusion is configured such that in a state where an end portion of the spring is not seated against the spring seat while the spring is placed adjacent to the spring seat, the end portion of the spring contacts the protrusion.

Abstract: A Faraday rotator includes a magnetic circuit including first to third magnetic materials each provided with a through hole through which light passes, and a Faraday element disposed in the through hole. When a direction where light passes through the through hole is defined as a direction of an optical axis, the first magnetic material is magnetized in a direction perpendicular to the direction of the optical axis, the second magnetic material is magnetized in a direction parallel to the direction of the optical axis, and the third magnetic material is magnetized in a direction perpendicular to the direction of the optical axis, and a length of the Faraday element along the direction of the optical axis is shorter than a length of the second magnetic material along the direction of the optical axis.

Abstract: An information processing apparatus includes a communication unit capable of communicating with a server, a battery, and a controller. The controller is capable of executing processing regarding a predetermined function for which personal authentication is required at a time of use, detects a remaining charge level of the battery, and transmits, when the detected remaining charge level is less than a predetermined threshold value, a transfer request signal to the server, the transfer request signal requesting transfer of use authority of the function to another information processing apparatus.

Abstract: The present invention provides a glass material exhibiting a high light transmittance at a working wavelength. The glass material includes, in terms of % by mole, from 26% to 40% of Tb2O3, greater than 12% and 40% or less of B2O3, from 1% to 20% of Al2O3, from 1% to 40% of SiO2, from 0% to 5% of P2O5, and greater than 14% and 74% or less of B2O3+Al2O3+SiO2+P2O5.

Abstract: Provided is a magneto-optic element that enables easy size reduction of an optical isolator. A magneto-optic element is formed of two or more magnetic members joined together.

Abstract: Provided is a magnetic circuit which, with the use in an optical isolator, is less likely to cause the polarizer to be damaged even with higher laser output power.

Abstract: Provided is a glass material having a high light transmittance in a short wavelength range and easily producible. A glass material contains, in terms of % by mole, 5 to less than 30% Pr2O3 and 0.1 to 95% B2O3.

Abstract: A cleaning device according to an embodiment is a cleaning device that cleans a light transmission member provided on a camera. The cleaning device includes a filamentary member configured to contact the light transmission member and a rotation member configured to rotate the filamentary member such that the filamentary member moves along the surface of the light transmission member with the filamentary member in contact with the light transmission member.

Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: Provided are a Faraday rotator and a magneto-optical device which stably provide a Faraday rotation angle of 45° and achieve further size reduction.

Abstract: Provided are a Faraday rotator and a magneto-optical device which stably provide a Faraday rotation angle of 45° and achieve further size reduction.

Abstract: A washer fluid heating device according to an embodiment includes: a container which stores a washer fluid; a deflector which vertically partitions a storage space for the washer fluid into an upper space and a lower space; an inflow portion through which the washer fluid flows into a lower side of the storage space partitioned by the deflector; an outflow portion which is provided to an upper side of the storage space partitioned by the deflector to cause the washer fluid to flow out of the container; and a heating portion which is positioned in the storage space, in which, in the deflector, a plurality of holes which cause the washer fluid to pass from the lower side toward the upper side of the storage space are disposed to be substantially evenly distributed.

Abstract: Provided is a glass material that can satisfy both a high Faraday effect and a high light transmittance in a short wavelength range. A glass material contains, in % by mole, 30 to 50% Pr2O3 and 0.1 to 70% B2O3+P2O5.

Abstract: Provided is a glass material that can satisfy both high Faraday effect and high light transmittance at wavelengths used. A glass material containing, in terms of % by mole of oxide, more than 40% Tb2O3 and having a percentage of Tb3+ of 55% by mole or more relative to a total content of Tb.

Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: A cleaning device according to an embodiment is a cleaning device that cleans a light transmission member provided on a camera. The cleaning device includes a filamentary member configured to contact the light transmission member and a rotation member configured to rotate the filamentary member such that the filamentary member moves along the surface of the light transmission member with the filamentary member in contact with the light transmission member.

Abstract: Provided is a magneto-optic element that enables easy size reduction of an optical isolator. A magneto-optic element is formed of two or more magnetic members joined together.

Abstract: Provided is a glass material having high light transmittance at operating wavelengths. A glass material containing, in terms of oxide by mole %, 5 to 40% Tb2O3 and being substantially free of Sb2O3 and As2O3, wherein a proportion of Tb3+ to a total amount of Tb is 55% by mole or more.

Abstract: Provided is a magneto-optic element that enables size reduction of an optical isolator without damaging the magneto-optic element even if the diameter of the magneto-optic element is reduced. A magneto-optic element is made of a columnar glass material with a diameter of 20 mm or less and has a laser damage threshold of 10 J/cm2 or more.