Abstract: An optical lens composition and a manufacturing method of an optical lens are provided. The manufacturing method of the optical lens includes molding an optical lens composition by injection molding, and the optical lens composition including a polymer mixture and a functional material; wherein the polymer mixture includes a styrene-butadiene copolymer.

Abstract: A twin-shaft hinge comprises a twin-shaft body, a first shaft, a first brake lining, a second shaft and a second brake lining: the twin-shaft body has mounting holes opened at its both flanks, each of which has retainers outside its opening's both sides, and a hold-down groove in one mounting hole and between two retainers; the first shaft has a pivot part, a holder linking the pivot part, and a stopper between the pivot part and the holder; the second shaft has a pivot part and a holder only; the first brake lining or the second brake lining is coupled with a pivot part and inserted into a mounting hole for one stopper. With the twin-shaft body, the first shaft, and the second shaft mutually coordinating, a first device body on one electronic device is turned to a second device body's rear side.

Abstract: A hinge comprises a twin-shaft body, a first shaft, a first connecting part, a second shaft, and a second connecting part: the twin-shaft body is designed to have mounting holes on its both sides for the holes securely inserted into the first shaft and the second shaft which are coupled with the first connecting part and the second connecting part separately for the connecting parts turning around the shafts and turning angles restricted by two pairs of retainers and stoppers, each of which is designed on one shaft and one connecting part, respectively; the first connecting part is effective in enabling rotation of an electronic device's first device body which turns to a specific angle and drive the twin-shaft body to turn around the second shaft for the electronic device's first device body over the second device body.

Abstract: A battery connector includes an insulating frame having a plurality of parallel partitioning boards spaced from each other in a direction, with a positioning slot defined between two of the partitioning boards adjacent to each other. A pair of terminals is received in each positioning slot. Each pair of terminals includes a first terminal and a second terminal. Each of the first and second terminals includes a body having a first end and a second end. A welding portion extends from the second end. A bend is formed between the body and the welding portion. The first end includes a resilient contact portion having a contact end. The contact ends of each pair of terminals together define a coupling space for coupling with one of a plurality of contact blades of a connector.

Abstract: A connector includes a housing having a card receiving space for selectively receiving one of two or more different electronic cards. A protective board is mounted on the bottom wall defining the card receiving space and slideable in a front/rear direction of the housing. First terminals and second terminals are mounted in the card receiving space. The protective board is not moved and the first terminals are in electrical contact with contacts of an electronic card when the electronic card is inserted into the card receiving space. When another electronic card is inserted into the card receiving space, the protective board is moved rearward to press the first terminals into guide slots in the protective board, allowing electrical connection of another electronic card with the second terminals while preventing electrical connection with the first terminals.

Abstract: A connector includes a housing having a card receiving space for selectively receiving one of two or more different electronic cards. A pivotal rod is mounted in the housing and normally spaced from a plurality of first terminals mounted in the card receiving space. When an electronic card of a first type is inserted into the card receiving space, it passes below the pivotal rod to a position in electrical contact with first terminals. When an electronic card of a second type is inserted into the card receiving space, it presses and pivots the pivotal rod to press the first terminals downward, allowing the second electronic card to move further inward for electrical contact with second terminals behind the first terminals while preventing electrical connection between the first terminals and the electronic card of second type.

Abstract: A memory card assembly includes a memory card and a case. The memory card includes a first end with a USB interface and a second end. The case includes a compartment for removably receiving the second end of the memory card. The case further includes a coupling member extending from a wall defining the compartment. When the second end of the memory card is inserted into the compartment of the case, the coupling member and the first end of the memory card together form a coupling socket adapted for coupling with a coupling seat inside a coupling opening of a USB socket, with the USB interface located in the coupling socket and in electrical contact with contacts of the USB socket.

Abstract: A memory card reader includes a case including a first end with a compartment for coupling with a coupling opening of a USB socket. The case further includes a second end with a card receiving space. The card receiving space includes an insertion opening for receiving a memory card. An adaptor circuit board is mounted in the compartment and the card receiving space. The adaptor circuit board includes a first end with a USB interface and a second end with resilient conductive plates. The USB interface of the adaptor circuit board faces the compartment and is engaged with a coupling seat in the coupling opening of the USB socket and in contact with resilient conductive plates in the coupling seat. The resilient conductive plates of the adaptor circuit board face the card receiving space and are in contact with a read/write interface of the memory card.

Abstract: A box includes a compartment for receiving a memory card device having a positioning groove. A retaining member is pivotally mounted in the box and includes a first end exposed outside the box for operation. The retaining member further includes a second end engaging with the positioning groove of the memory card device to retain the memory card device in the compartment. The first end of the retaining member is operable to disengage the second end of the retaining member from the positioning groove of the memory card device.

Abstract: A memory card assembly includes a memory card and a case. The memory card includes a first end with a USB interface and a second end. The case includes a compartment for removably receiving the second end of the memory card. The case further includes a coupling member extending from a wall defining the compartment. When the second end of the memory card is inserted into the compartment of the case, the coupling member and the first end of the memory card together form a coupling socket adapted for coupling with a coupling seat inside a coupling opening of a USB socket, with the USB interface located in the coupling socket and in electrical contact with contacts of the USB socket.