Abstract: There are provided an optical receptacle having an optical fiber including a first portion on another end surface side, a third portion on one end surface side, and a second portion between the first portion and the third portion; a core diameter at the first portion is smaller than the core diameter at the third portion; the core diameter at the second portion increases from the first portion side toward the third portion side; a first elastic member is provided between the optical fiber and an inner wall of a through-hole; a holder holds the another end surface side of a fiber stub; and the sleeve holds the one end surface side of the fiber stub.

Abstract: Provided is a winding device configured so that the entirety of the device can be thinned and looseness of an elongated member can be reduced. In a winding device 1A, a flat motor 2 is used as a motor, and a spool 3 and a magical planetary gear mechanism 4 are formed flat along an extending XY plane of the flat motor 2. Thus, the entirety of the device can be configured flat, and can be thinned. Moreover, the magical planetary gear mechanism 4 prevents rotation of the spool 3 by external force, and therefore, looseness of the elongated member can be reduced.

Abstract: There are provided an optical receptacle having an optical fiber including a first portion on another end surface side, a third portion on one end surface side, and a second portion between the first portion and the third portion; a core diameter at the first portion is smaller than the core diameter at the third portion; the core diameter at the second portion increases from the first portion side toward the third portion side; a first elastic member is provided between the optical fiber and an inner wall of a through-hole; a holder holds the another end surface side of a fiber stub; and the sleeve holds the one end surface side of the fiber stub.

Abstract: A linear vibration actuator includes: a mover having a plurality of magnets linearly arrayed in the vibration direction; a guide portion holding the mover to be allowed to linearly move in the vibration direction; a plurality of planar coils wound in a flat plate shape on a flat surface facing the mover; a pair of first biasing magnets respectively arranged at both ends of the mover in the vibration direction; and a pair of second biasing magnets that are respectively arranged facing the pair of first biasing magnets, and respectively have the same polarities as those of the pair of first biasing magnets to bias the mover in the vibration direction.

Abstract: A diamond crystal substrate has a substrate surface that is one crystal plane among (100), (111), and (110) and that has atomic steps and terraces structure at an off-angle of 7° or less excluding 0°.

Abstract: To provide a ceramic composite and a production method therefor allowing ease of processing to be improved and fracture toughness to be improved simultaneously. The invention includes the steps of: preparing at least a liquid-form resin and a ceramic sintered body which has been sintered at a temperature which is 700° C. to 100° C. less than a sintering temperature at which a theoretical density is obtained; immersing the ceramic sintered body in the liquid-form resin, causing the liquid-form resin to infiltrate the ceramic sintered body; and hardening the infiltrated liquid-form resin to obtain a ceramic composite having a relative density of between 40% and 90% by causing the resin to infiltrate. Gaps where no resin has infiltrated are formed in the ceramic composite.

Abstract: A ceramic body for dental prosthesis can suppress a variation in quality in the sole ceramic body for dental prosthesis due to expansion of its diameter. The ceramic body for dental prosthesis is made of a ceramic material, is shaped to have a circular planar shape and a disk-like external shape, and has a diameter of 50 mm or more. The method for manufacturing this ceramic body for dental prosthesis includes: preparing a ceramic material; shaping the ceramic material by press shaping or by a machine tool; temporarily sintering the ceramic material at a temperature from a sintering temperature that provides theoretical density ?700° C. or more to the sintering temperature ?100° C. or less; and shaping the ceramic material to have a circular planar shape and a disk-like external shape so as to prepare the ceramic body for dental prosthesis having a diameter of 50 mm or more.

Abstract: Provided is a mode controller which includes an optical fiber coupled body and at least one pair of bobbins, and the mode controller is configured so that: the one pair of bobbins includes two bobbins arranged, spaced from one another; the optical fiber coupled body includes a step-index fiber and a graded-index fiber, which are coupled with each other; the step-index fiber and/or the graded-index fiber is/are wound around the at least one pair of bobbins, and twisted to form a helical area(s); light is launched into the step-index fiber, propagates through the step-index fiber, is emitted from the step-index fiber, and is launched into the graded-index fiber; propagation mode of the light is converted to an equilibrium mode distribution during the propagation of the light through the step-index fiber; and the propagation mode of the light launched into the graded-index fiber is converted to a low-order mode.

Abstract: A switch power generating mechanism includes at least a first movable component, a second movable component, a first deforming component connected to the first movable component, and a power generator, wherein a pressing force is transmitted to the second movable component from the outside of the switch power generating mechanism to cause at least part of the first movable component and at least part of the second movable component to move in a connected manner and cause the first movable component to rotate by a fixed amount to deform the first deforming component by a fixed amount; and the deformation of the first deforming component is released once the first movable component has been caused to rotate by the fixed amount, and power generation is performed with power generated in the power generator due to the first movable component rotated by a fixed amount with the release from the deformation.

Abstract: A diamond crystal substrate has a substrate surface that is one crystal plane among (100), (111), and (110) and that has atomic steps and terraces structure at an off-angle of 7° or less excluding 0°.

Abstract: A power generation mechanism includes a first movable member, a second movable member, a twisted coil spring, a power generator, and a housing. The first and second movable members are gears. First and second wound parts of the spring are wound around a first center shaft in opposite directions. Initial elastic energies ie1 and ie2 are respectively applied to the first and second wound parts, absolute values of ie2 and ie1 being equal. The second movable member is turnable by a force from outside the mechanism, engaging teeth of the first and second movable members together to turn the first movable member. With ie12 accumulating on the first wound part and with the teeth disengaged from each other, the first center shaft is turned in an opposite direction by ie12 to generate power in the power generator. Also, the first center shaft is turned by ie1 and ie2.

Abstract: A method for polishing a diamond crystal includes preparing a diamond crystal having a main surface having a plane orientation of (100). Mechanical polishing is performed on the main surface using a polishing wheel such that: a tangent contacts a curve extending in a rotation direction of the wheel and contacting a contact position between the diamond crystal and the wheel that is rotating; and a tangent direction of the tangent at the contact position is within a range of ±10 degrees relative to a <110> direction of the diamond crystal, thereby causing an affected region to appear such that the affected region is parallel to a direction of a plane orientation (111) of the diamond crystal and penetrates the diamond crystal onto the main surface. Chemical mechanical polishing is performed on the main surface to remove the affected region, thereby removing the affected region from the main surface.

Abstract: A linear vibration actuator includes: a mover having a plurality of magnets linearly arrayed in the vibration direction; a guide portion holding the mover to be allowed to linearly move in the vibration direction; a plurality of planar coils wound in a flat plate shape on a flat surface facing the mover; a pair of first biasing magnets respectively arranged at both ends of the mover in the vibration direction; and a pair of second biasing magnets that are respectively arranged facing the pair of first biasing magnets, and respectively have the same polarities as those of the pair of first biasing magnets to bias the mover in the vibration direction.

Abstract: Provided is a power generating device which, while having a basic structure of using a rack and a pinion, increases power generating efficiency and has fewer components, has improved durability due to a simplified structure, and can easily be made in smaller sizes. Configuring a guide mechanism using outer walls of a case of a power generating unit as guides and combining the same with rails provided on inner walls of a case of the power generating device distributes unnecessary stress on the power generating unit over the inner walls of the case to obtain effects of achieving an overall small size, reduction in the number of components, and improved durability.

Abstract: A clutch device includes an input disc, an output disc, and a biasing member configured to press the input disc against the output disc. A rotation load applied to an output shaft separates the input disc from the output disc against biasing force of the biasing member. The input disc and the output disc include opposing surfaces, each of which includes axially disengageable overlapping tooth portions. Recessed and raised portions of each tooth portion are formed continuously in a radial direction and are alternately arranged in a circumferential direction. Each of the curved shapes of the recessed and raised portions is maintained at a respective identical height while a circumferential width thereof continuously expands in a radially outward direction. Also disclosed is a motor unit including the clutch device. The disclosed clutch device reduces, e.g., deformation or damage of a disengageable portion, and therefore, can improve durability.

Abstract: The crystal plane in the interior of the diamond substrate has a curvature higher than 0 km?1 and equal to or lower than 1500 km1 by preparing a base substrate, forming a plurality of pillar-shaped diamonds formed of diamond single crystals on one side of the base substrate, causing diamond single crystals to grow from tips of each pillar-shaped diamond, coalescing each of the diamond single crystals grown from the tips of each pillar-shaped diamond to form a diamond substrate layer, separating the diamond substrate layer from the base substrate, and manufacturing the diamond substrate from the diamond substrate layer.

Abstract: A power generation mechanism includes a first movable member, a second movable member, a twisted coil spring, a power generator, and a housing. The first and second movable members are gears. First and second wound parts of the spring are wound around a first center shaft in opposite directions. Initial elastic energies ie1 and ie2 are respectively applied to the first and second wound parts, absolute values of ie2 and ie1 being equal. The second movable member is turnable by a force from outside the mechanism, engaging teeth of the first and second movable members together to turn the first movable member. With ie12 accumulating on the first wound part and with the teeth disengaged from each other, the first center shaft is turned in an opposite direction by ie12 to generate power in the power generator. Also, the first center shaft is turned by ie1 and ie2.

Abstract: A ceramic body for dental prosthesis can suppress a variation in quality in the sole ceramic body for dental prosthesis due to expansion of its diameter. The ceramic body for dental prosthesis is made of a ceramic material, is shaped to have a circular planar shape and a disk-like external shape, and has a diameter of 50 mm or more. The method for manufacturing this ceramic body for dental prosthesis includes: preparing a ceramic material; shaping the ceramic material by press shaping or by a machine tool; temporarily sintering the ceramic material at a temperature from a sintering temperature that provides theoretical density ?700° C. or more to the sintering temperature ?100° C. or less; and shaping the ceramic material to have a circular planar shape and a disk-like external shape so as to prepare the ceramic body for dental prosthesis having a diameter of 50 mm or more.

Abstract: A diamond substrate is formed of diamond single crystals by preparing a base substrate; forming plural pillar-shaped diamonds formed of diamond single crystals on one side of the base substrate; causing a diamond single crystal to grow from a tip of each pillar-shaped diamond and coalescing the diamond single crystals growing from the tips of the pillar-shaped diamonds to form a diamond substrate layer; separating the diamond substrate layer from the base substrate; and manufacturing a diamond substrate from the diamond substrate layer, a shape in an in-plane direction of the diamond substrate is a circular shape or a circular shape having an orientation flat plane formed therein and has a diameter of two inches or more.