Abstract: A lens holding device includes a movable part having a coil attached to a lens holder holding a lens and includes a magnet part arranged around an outer peripheral side of the movable part so as to face the coil. The lens holding device includes a support part which supports the movable part so as to move relatively and a spring which connects the movable part and the support part resiliently. The magnet part includes a resin and has an alignment part which positions the spring.

Abstract: A lens holding unit is held so that it can relatively move with respect to a base part to a direction vertical to an optical axis direction. The lens holding unit has a lens holder, a magnet part, and a spring. The lens holder has a first coil. The magnet part has a first magnet part which includes a first face facing to the first coil and a second magnet part which includes a second face vertical to the first face and constitutes a magnetic domain different from that of the first magnet part. These first magnet part and second magnet part are integrated.

Abstract: A lens holding device includes a movable part having a coil attached to a lens holder holding a lens and includes a magnet part arranged around an outer peripheral side of the movable part so as to face the coil. The lens holding device includes a support part which supports the movable part so as to move relatively and a spring which connects the movable part and the support part resiliently. The magnet part includes a resin and has an alignment part which positions the spring.

Abstract: A PTC element comprising a PTC element body containing a polymer matrix and conductive particles, a pair of electrodes in contact with the PTC element body, and a protective layer composed of a cured epoxy resin composition containing an epoxy resin and a thiol-based curing agent, and covering the PTC element body so as to seal the PTC element body.

Abstract: A PTC element has an element body in which an electroconductive filler is dispersed in a crystalline polymer, a pair of lead terminals compressed with the element body in between, and a protecting film covering a portion of the element body not compressed against the pair of lead terminals. Each of the pair of lead terminals has an overlap region overlapping with the element body, and a nonoverlap region not overlapping with the element body. An anchor projection embedded in the element body is formed in the overlap region of each of the pair of lead terminals. A peel prevention region for preventing peeling of the protecting film is formed in a region adjoining the element body in the nonoverlap region. The anchor projection is formed as crushed in a region except for at least the peel prevention region in the nonoverlap region.

Abstract: In a PTC thermistor comprising at least a pair of electrodes disposed so as to face each other and a thermistor element disposed between the electrodes and having a positive resistance-temperature characteristic, the thermistor element is a molded body constituted by a high molecular matrix, a low molecular organic compound, and conductive particles having electric conductivity, the molecular weight of the high molecular matrix is between 10,000 and 400,000, the molecular weight of the low molecular organic compound is between 100 and 3,000, and the high molecular matrix is an olefin-type high molecular compound having a melting start temperature of between 85 and 95° C.

Abstract: A PTC element has an element body in which an electroconductive filler is dispersed in a crystalline polymer, a pair of lead terminals compressed with the element body in between, and a protecting film covering a portion of the element body not compressed against the pair of lead terminals. Each of the pair of lead terminals has an overlap region overlapping with the element body, and a nonoverlap region not overlapping with the element body. An anchor projection embedded in the element body is formed in the overlap region of each of the pair of lead terminals. A peel prevention region for preventing peeling of the protecting film is formed in a region adjoining the element body in the nonoverlap region. The anchor projection is formed as crushed in a region except for at least the peel prevention region in the nonoverlap region.

Abstract: A PTC element comprising a PTC element body containing a polymer matrix and conductive particles, a pair of electrodes in contact with the PTC element body, and a protective layer composed of a cured epoxy resin composition containing an epoxy resin and a thiol-based curing agent, and covering the PTC element body so as to seal the PTC element body.

Abstract: In a first aspect of the present invention, a PTC composition contains (a) a crosslinked polymer matrix having a gel fraction of at least 10%, and (b) an electrically conductive substance. An article shaped therefrom yields an electric resistance of at least 50 m? at 25° C. after being placed in an environment repeating 200 times of a temperature change between ?40° C. and +85° C., and exhibits no thermal deformation when placed on a hot plate at 200° C. for 5 minutes.

Abstract: In a PTC thermistor comprising at least a pair of electrodes 2 and 3 disposed so as to face each other and a thermistor element disposed between the electrodes 2 and 3 and having a positive resistance-temperature characteristic, the thermistor element is a molded body constituted by a high molecular matrix, a low molecular organic compound, and conductive particles having electric conductivity, the molecular weight of the high molecular matrix is between 10,000 and 400,000, the molecular weight of the low molecular organic compound is between 100 and 3,000, and the high molecular matrix is an olefin-type high molecular compound having a melting start temperature of between 85 and 95° C.

Abstract: In a first aspect of the present invention, a PTC composition contains (a) a crosslinked polymer matrix having a gel fraction of at least 10%, and (b) an electrically conductive substance. An article shaped therefrom yields an electric resistance of at least 50 m&OHgr; at 25° C. after being placed in an environment repeating 200 times of a temperature change between −40° C. and +85° C., and exhibits no thermal deformation when placed on a hot plate at 200° C. for 5 minutes.