Abstract: A breaker (1) is provided with: a fixed piece (2) which has a fixed contact; a movable piece which has a movable contact at a front end portion and pushes the movable contact against the fixed contact to bring same into contact with each other; a thermally responsive element that deforms in accordance with a change in temperature and thereby actuates the movable piece so that the movable contact separates from the fixed contact; and a case body (71) of a resin case that accommodates the fixed piece (2), the movable piece, and the thermally responsive element. The case body (71) has recess portions (75, 77) which are recessed from a peripheral portion, and the fixed piece (2) has a withdrawal portion (25) that withdraws from the recess portions (75, 77) of the case body (71) by a predetermined first distance (D1) or more, and is embedded in the case body (71).

Abstract: A circuit breaker 1 comprises: a fixed-contact piece 2 with a fixed contact 21; a movable-contact piece 4 with a movable contact 41; a thermal actuator element 5 thermally transformable to move the movable-contact piece; a PTC thermistor 6 for conducting electricity between the movable-contact piece 4 and the fixed-contact piece 2; a main body 71 of a package provided with a holding recess 73 housing the above-mentioned components; and a cover 81 hermetically covering the holding recess 73. The fixed-contact piece 2 is embedded between an internal wall 74 and an external wall 75 of the main body 71. The PTC thermistor 6 is housed in an opened hollow 73d. In a planar view of the circuit breaker, a through-hole 76 penetrating through the external wall 75 overlaps with the opened hollow 73d, but does not overlap with the centroid O of the opened hollow 73d.

Abstract: A breaker is provided with: a movable piece (4) that has an elastically deformable elastic portion (43) and a movable contact on the tip of the elastic portion (43) and that presses the movable contact into contact with a fixed contact; a thermal actuator element (5) that is formed into a shape with a convex surface and is deformed by a change in temperature, thereby actuating the movable piece (4) so that the movable contact separates from the fixed contact; and a resin case (7) which houses the movable piece (4) and the thermal actuator element (5). The bottom surface of the base end (42a) of the movable piece (4) is positioned lower than the top (5a) of the upper surface of the thermal actuator element (5) by a distance (D). Thereby, a stable temperature adjustability and a resistance value are ensured in a breaker used as a protection device for a secondary battery with miniturization brought into realty.

Abstract: An electric part 100 comprises a terminal piece 102 having an embedded portion 103 embedded in a resinous package 101 and a projecting portion 104 projecting from the package 101 and having a tip end 102e. The projecting portion 104 is provided with a bent section 110 including a first bent position 111 and a second bent position 112. Between the first bent position 111 and the second bent position 112, a diverging position 120 is disposed such that the projecting portion 104 is divided into two or more parts from the diverging position 120 toward the tip end 102e.

Abstract: A circuit breaker 1 comprises: a fixed-contact piece 2 with a fixed contact 21; a movable-contact piece 4 with a movable contact 41; a thermal actuator element 5 thermally transformable to move the movable-contact piece so that the movable contact 41 and the fixed contact 21 are opened; a PTC thermistor 6 for conducting electricity between the movable-contact piece 4 and the fixed-contact piece 2 through the thermal actuator element 5 when the movable contact 41 and the fixed contact 21 are opened; a main body 71 of a package provided with a holding recess 73 housing the above-mentioned components; and a cover 81 hermetically covering the holding recess 73. The fixed-contact piece 2 is embedded between an internal wall 74 and an external wall 75 of the main body 71. The PTC thermistor 6 is housed in an opened hollow 73d penetrating through the internal wall 74 under such a state that the PTC thermistor 6 conductively contacts with the fixed-contact piece 2.

Abstract: In a radial optical path type rotary encoder, in order to be able to reduce deterioration of resolution and variation among products due to burrs during molding and/or rounding of a die, a scale for a rotary encoder is provided with a scale body which is formed substantially in a cylindrical shape, the scale body having a side surface portion in which a light transmitting portion through which light passes and a light blocking portion by which light with a predetermined width in a circumferential direction is blocked are formed alternately in the circumferential direction, wherein the side surface on a light-incident side of the light blocking portion is formed outside a light transmittable region having an outer edge defined by a light beam tangent to the side surface of the light blocking portion amidst the light passing through the light transmitting portion, in a lateral cross-section view.

Abstract: In a radial optical path type rotary encoder, in order to be able to reduce deterioration of resolution and variation among products due to burrs during molding and/or rounding of a die, a scale for a rotary encoder is provided with a scale body which is formed substantially in a cylindrical shape, the scale body having a side surface portion in which a light transmitting portion through which light passes and a light blocking portion by which light with a predetermined width in a circumferential direction is blocked are formed alternately in the circumferential direction, wherein the side surface on a light-incident side of the light blocking portion is formed outside a light transmittable region having an outer edge defined by a light beam tangent to the side surface of the light blocking portion amidst the light passing through the light transmitting portion, in a lateral cross-section view.

Abstract: A digging-into portion 91 formed in a fixed part 42 of a movable piece 4 digs into and fits with a protrusion 74a of a resin casing 71, and the movable piece 4 is firmly fixed to the resin casing 71. Thereby, the posture of the movable piece 4 relative to the resin casing 71 is stabilized, and the positional relation between the fixed contact and the movable contact is stabilized.

Abstract: An imaging lens unit configured for processing by a solder reflow process, and includes a lens group of one or more lenses; and a lens tube supporting the lens group. The imaging lens unit comprises one or more cationically-cured epoxy resin lenses formed from an cationically-curable epoxy resin material, the lens tube is formed from a thermoplastic resin material having a deflection temperature under load of at least 200° C. The imaging lens unit has a clearance between the lens tube and at least one of the cationically-cured epoxy resin lenses and has lens supporting portions provided at least three locations inside the lens tube that support the at least one cationically-cured epoxy resin lens. The lens unit can be miniaturized. The imaging lens unit also provides excellent optical characteristics without deteriorating the optical characteristics in alignment of the centers of the lens and the diaphragm.

Abstract: The present invention provides an imaging lens unit configured to be processed by the solder reflow process, can be miniaturized, and has sufficient thermal resistance for the reflow temperatures. The imaging lens unit also provides excellent optical characteristics such as transmissivity, a refractive index, and the like without deteriorating the optical characteristics in alignment of the centers of the lens and the diaphragm even after the reflow process, so as to contribute to reduction in the size and an increase in the capabilities. The imaging lens unit is configured to be processed by a solder reflow process, and includes a lens group consisting of one or more lenses; and a lens tube that supports the lens group, wherein the imaging lens unit comprises one or more cationically-cured epoxy resin lenses formed from an cationically-curable epoxy resin material, the lens tube is formed from a thermoplastic resin material having a deflection temperature under load of not lower than 200° C.

Abstract: An image taking lens LA comprises an aperture S1, a first lens L1 and a second lens L2 which are arranged in this order from an object side to an image side. The first lens L1 has a positive power and a meniscus shape with a convex surface facing an object; and the second lens L2 has a positive power with a convex surface facing an image. The first lens L1 and the second lens L2 satisfy the following formulae (1) and (2): 0.30<R1/R2<0.65??(1) 0.30<d3/F<0.50??(2) This image taking lens formed of the two lenses is small in size and has a high optical performance, in which the entire image taking lens has a short focal length.

Abstract: An image taking lens 1 comprises a stop 2, a first lens 3 having a positive power and biconvex configuration, a second lens 4 having a negative power and having a meniscus configuration in which a concave surface is disposed to face an object, a third lens 5 having a positive power and a meniscus configuration in which a convex surface is disposed to face an image, and a fourth lens 6 having a negative power and a meniscus configuration in which a convex surface is disposed to face the object, which are arranged in this order from the object. The lenses 3 to 6 satisfy the following formulae (1) to (4), 3.00<F1/d1<10.00??(1) ?20.0<F2/d3<?10.0??(2) 50.0<?1<60.0??(3) 20.0<?2<30.0??(4) hereupon, F1: focal length of the first lens; F2: focal length of the second lens; d1: a center thickness of the first lens; d3: a center thickness of the second lens; ?1: an Abbe's number of the first lens; and ?2: an Abbe's number of the second lens.

Abstract: The present invention provides an imaging lens that includes, in order from an object, a diaphragm S1; a first lens L1 with a positive power and a meniscus shape that is convex toward an object side; a second lens L2 with a negative power and a meniscus shape that is convex toward an image side; and a third lens L3 with a positive power and a meniscus shape that is convex toward the object side; the imaging lens satisfying Conditional Expressions (1) to (3): 0.95<f1/f<1.50 ??(1); ?0.50<f1/f2<?0.00 ??(2); and 0.40<d1/d2<0.70 ??(3); wherein: f: a focal length of the entire lens system; f1: a focal length of the first lens; f2: a focal length of the second lens; d1: a center thickness of the first lens; and d2: a distance between an image-side surface of the first lens and an object-side surface of the second lens.

Abstract: An image taking lens LA comprises an aperture S1, a first lens L1 and a second lens L2 which are arranged in this order from an object side to an image side. The firs lens L1 has a positive power and a meniscus shape with a convex surface facing an object; and the second lens L2 has a positive power with a convex surface facing an image. The first lens L1 and the second lens L2 satisfy the following formulae (1) and (2): 0.30<R1/R2<0.65 ??(1) 0.30<d3/F<0.50 ??(2) This image taking lens formed of the two lenses is small in size and has a high optical performance, in which the entire image taking lens has a short focal length.

Abstract: An image taking lens 1 comprises a stop 2, a first lens 3 having a positive power and biconvex configuration, a second lens 4 having a negative power and having a meniscus configuration in which a concave surface is disposed to face an object, a third lens 5 having a positive power and a meniscus configuration in which a convex surface is disposed to face an image, and a fourth lens 6 having a negative power and a meniscus configuration in which a convex surface is disposed to face the object, which are arranged in this order from the object. The lenses 3 to 6 satisfy the following formulae (1) to (4), 3.00<F1/d1<10.00??(1) ?20.0<F2/d3<?10.0??(2) 50.0<?1<60.0??(3) 20.0<?2<30.0??(4) hereupon, F1: focal length of the first lens; F2: focal length of the second lens; d1: a center thickness of the first lens; d3: a center thickness of the second lens; ?1: an Abbe's number of the first lens; and ?2: an Abbe's number of the second lens.