Abstract: An optical fiber connector assembly includes a female connector, a male connector, and a thin film filter. The female connector includes a first main body and a first lens portion. The first main body and the first lens portion are made of a same polymer material having a lower melting point and higher fluidity than polyether-imide. The male connector is used for insertion into the female connector and includes a second main body and a second lens portion for optically coupling with the first lens portion. The second main body and the second lens portion are made of a same polymer material having a lower melting point and higher fluidity than polyether-imide. The thin film filter is formed on each of the first and second lens portions. A related optical fiber connector is also disclosed.

Abstract: An exemplary optical fiber connector includes a socket and a plug for insertion in the socket. The plug includes a first sidewall, an opposite second sidewall, a plurality of first fiber engaging holes formed in each of the first and second sidewalls, and a plurality of first converging lenses located in each of the first and second sidewalls, aligning with the respective first fiber engaging holes. The socket includes a fourth sidewall, an opposite fifth sidewall, a plurality of second fiber engaging holes formed in each of the fourth and fifth sidewalls, and a plurality of second converging lenses located in each of the fourth and fifth sidewalls, aligning with the respective second fiber engaging holes. The first converging lenses align with and directly face the respective second converging lenses.

Abstract: An optical fiber connector includes a female connector and a male connector. The female connector includes a first main body and a first lens portion. The first main includes at least one positioning slit and at least one recess defined in an inner surface of the first main body in the at least one positioning slit. The male connector is used for engagement with the female connector, and includes a second main body and a second lens portion for optically coupling with the first lens portion. The second main body includes at least one positioning post configured for insertion into the corresponding at least one positioning slit and at least one protrusion protruding from the at least one positioning post configured for insertion into the corresponding at least one recess.

Abstract: An optical fiber connector includes a connector hold, a connector body and a number of optical fibers. The hold defines a receiving recess. The connector body is held in the receiving recess of the connector hold. The optical fibers pass through the connector hold and are attached to the connector body. The connector body includes two engagement blocks formed on opposite side surfaces thereof. The connector hold defines two grooves corresponding to the engagement blocks. The engagement blocks are engaged in the corresponding grooves. The connector body is restricted by the groove in the receiving recess from tilting relative to the connector hold.

Abstract: A method for verifying tolerance of a connector molding die includes, firstly, providing a first connector molding die, and molding a first optical connector using the first connector molding die. The centers of the lenses relative to the center of the first transmission surface are located. A second connector molding die is provided. A second optical connector is molded by the second connector molding die. The central locations of the first blind holes are determined by measuring the central locations of the second blind holes based on the center of the second transmission surface. Difference values between the locations of the centers of the lenses and the central locations of the first blind holes are determined.

Abstract: A mold for molding an optical fiber connector having a number of lens portions with a flat surface or a curved surface, is provided. The mold includes an upper molding portion, a lower molding portion, a first insert, a number of second inserts and a fixing portion. The first insert includes a number of curved molding portions and a flat molding portion. The upper molding portion, the lower molding portion, the first insert and the fixing portion cooperatively define a molding space. A distal end of each second insert is inserted into the molding space. The first insert is moveable relative to the second insert such that the curved molding portions or the flat molding portion is selectively exposed in the molding space and is opposite to the distal ends of the second inserts.

Abstract: An apparatus is provided for molding an optical fiber connector. The optical fiber connector includes a main body and a lens portion. The apparatus includes a molding cavity, an insert and a block in the molding cavity. The insert forms a blind hole of the main body. The block forms a recess of the main body. The molding cavity includes a central portion for forming the main body, a lens-forming portion for forming the lens portion, and two lateral portions for forming corresponding lateral surfaces of the main body. The molding cavity includes a gate for introducing molding material into the molding cavity therethrough. The gate is connected to an end of one of the lateral portions distal from the lens-forming portion. The block is positioned in the other end of said one of the lateral portions distal from the gate.

Abstract: An optical fiber connector includes an optical fiber, a body and an optical fiber receiving block. The body includes a top surface, a bottom surface, a front surface, and a rear surface. The top surface and the bottom surface extend from the front surface to the rear surface. The body defines a receiving groove in the rear surface. The body includes a lens portion arranged at the front surface. The optical fiber receiving block is attached on the body in the receiving groove. The optical fiber receiving block defines a through hole therein. The through hole receives the optical fiber. The lens portion is optically coupled with the optical fiber.

Abstract: An apparatus for molding optical fiber connector is provided. The optical fiber connector includes a main body. The main body has a blind hole for receiving an optical fiber two opposite surfaces being substantially parallel with the blind hole, and a lens portion aligned with the blind hole. The apparatus comprises a molding cavity and an insert for forming the blind hole. The molding cavity includes a central portion for forming the main body, a lens-forming portion for forming the lens portion, and two lateral portions for forming the corresponding surfaces. The molding cavity includes a gate for introducing molding material into the molding cavity. The gate is connected to one of the lateral potions distal from the lens-forming portion.

Abstract: An optical fiber connector includes a housing, a connector body, a plurality of optical fibers and spring portion. The housing includes a first sidewall and an opposite second sidewall. The connector body is received in the housing adjacent to the second sidewall. The optical fibers are attached to the connector body and extending through the first sidewall. The spring portion is received in the housing and resiliently compressed between the connector body and the first sidewall.

Abstract: An optical fiber fixing device for fixing optical fibers in an optical connector includes a supporting arm, two connecting arms, and a pressing arm. The supporting arm includes a first end and an opposite second end. The connecting arms respectively extend from the first end and the second end toward a same direction. The connecting arms are configured for insertion into the optical connector. The pressing arm extends from the supporting arm between the connecting arms. The pressing arm is configured for pressing the optical fibers onto the optical connector.

Abstract: An optical fiber coupling assembly includes a male optical connector and a female optical connector. The male optical connector includes an insulative base having a first surface, a second surface opposite to the first surface, and a male transmitting surface, first lenses mounted to the insulative base and exposed at the male transmitting surface, and a cover having an arm and a blocking plate. One end of the arm is fixed to the second surface, the other end of the arm resiliently attached to the blocking plate. The blocking plate is apart from the first lenses for covering the first lenses. The female optical connector faces the male transmitting surface. The female optical connector includes an insulative supporting member having a female transmitting surface facing the male transmitting surface, second lenses mounted to the female transmitting surface, and two spaced pushing members formed on the female transmitting surface.

Abstract: An exemplary fiber optic connector includes four converging lenses and a main body. The four converging lenses each includes a base portion and two engaging portions protruding from the base portion. The main body includes a first surface and a second surface at two opposite sides thereof. The first surface has four first receiving holes defined therein for receiving four respective optical fibers. The second surface has four second receiving holes aligning with the four respective first receiving holes defined therein. In addition, the main body defines an inner surface in each second receiving hole and two first slots in the inner surface. Each second receiving hole is configured for fixedly receiving the base portion of corresponding converging lens with the two engaging portions engaging in the two first slots.

Abstract: Disclosed are a chaotropic agent; a reagent including a chaotropic agent and a lithium salt; a reagent kit including a chaotropic agent; a chaotropic agent, a reagent, a reagent kit, and a method for isolating a nucleic acid by use of a magnetic cellulose material; a method for binding a nucleic acid to a magnetic cellulose material; a method for isolating a nucleic acid; and a method for purifying a chromosome DNA. It is required that each of the chaotropic agents, the reagents, and the reagent kits works with at least one solid-phase, magnetic cellulose-containing carrier to isolate a nucleic acid from non-nucleic acid substances. In addition, each chaotropic agent includes an alcohol substance and a substrate solution for adjusting the alcohol substance to an appropriate concentration and thereby promoting binding of the nucleic acid in a sample to the magnetic cellulose.

Abstract: A connector assembly includes a first connector, a second connector, and a fixing structure for fixing the second connector on the first connector. The first connector includes a main body and a plurality of contact terminals positioned on the main body. The second connector includes a main body and a plurality of contact terminals for contacting the contact terminal of the first connector positioned on the main body. The fixing structure includes a first magnetic member fixed on the main body of the first connector and a first receiving member fixed on the main body of the second connector received in the first magnetic member to fix the second connector on the first connector in a specific orientation.

Abstract: A socket and a plug are provided. Both the socket and the plug include a body, a blocking sheet, and an elastic member. Both the bodies define a coupling portion. The blocking sheet is disposed on the corresponding body and covers the corresponding coupling portion to protect the coupling portions from being contaminated when not used. The elastic member connects the corresponding body and the blocking sheet. When the plug is plugged into the socket, the blocking sheets, against an elastic force of the elastic member, pushes each other to expose the coupling portions until the coupling portions are coupled.

Abstract: An exemplary optical fiber connector includes a socket and a plug for insertion in the socket. The plug includes a first sidewall, an opposite second sidewall, a plurality of first fiber engaging holes formed in each of the first and second sidewalls, and a plurality of first converging lenses located in each of the first and second sidewalls, aligning with the respective first fiber engaging holes. The socket includes a fourth sidewall, an opposite fifth sidewall, a plurality of second fiber engaging holes formed in each of the fourth and fifth sidewalls, and a plurality of second converging lenses located in each of the fourth and fifth sidewalls, aligning with the respective second fiber engaging holes. The first converging lenses align with and directly face the respective second converging lenses.

Abstract: A method for isolating nucleic acids is provided. The method includes providing a biological sample containing at least one nucleic acid, and mixing the biological sample with an isolating agent under a suitable condition to isolate the nucleic acids from the biological sample in single step, wherein the isolating agent contains 1-40 wt % of PEG and/or more than 30 wt % of low molecular weight alcohol, a salt, and a detergent. Isolated nucleic acids are bound to a solid support by changes in the solubility of nucleic acids. Additionally, the present invention further provides an isolating agent and kit for isolating nucleic acids.

Abstract: An infrared-receiving device includes an infrared-receiving module, an expanded module, and a microprocessor control unit (MCU). The MCU receives a data pulse signal transmitted from the infrared-receiving module. The expanded module is electrically connected to the infrared-receiving module and the MCU to receive a substitution data pulse signal outputted from an external expanded device. The expanded module sends the substitution data pulse signal to the MCU to send a control command to an electronic appliance electrically connected to the MCU.

Abstract: A magnetic particle and fabrication method thereof. The magnetic particle comprises a polymer core, a magnetic material layer covering the polymer core, and a silicon containing layer covering the magnetic material layer. In addition, the magnetic particle may further comprise a coupling agent on the silicon containing layer, and an active molecule connected to the coupling agent. The magnetic particles provide controllable size, uniform diameter distribution, high magnetization, improved storage stability, and modified surface for targeting biomolecules for biomaterial separation and environmental analysis.