Abstract: An electro-acoustic transducer includes a frame with an accommodating space defined therein and an opening opened in a top surface thereof, at least one driving unit equipped in the accommodating space of the frame, a diaphragm movably mounted at the opening of the frame, at least one fulcrum settled in the accommodating space of the frame, and at least one lever placed next to the fulcrum to contact with and use the fulcrum as rotation center thereof. The lever connects with the driving unit and the diaphragm at two ends thereof and transmits vibration wave from the driving unit to the diaphragm. The lever has a longer length from the fulcrum to the diaphragm than from the fulcrum to the driving unit for increasing the vibration stroke of the diaphragm during transmitting the vibration wave.

Abstract: An electro-acoustic transducer includes a frame with an accommodating space defined therein and an opening opened in a top surface thereof, at least one driving unit equipped in the accommodating space of the frame, a diaphragm movably mounted at the opening of the frame, at least one fulcrum settled in the accommodating space of the frame, and at least one lever placed next to the fulcrum to contact with and use the fulcrum as rotation center thereof. The lever connects with the driving unit and the diaphragm at two ends thereof and transmits vibration wave from the driving unit to the diaphragm. The lever has a longer length from the fulcrum to the diaphragm than from the fulcrum to the driving unit for increasing the vibration stroke of the diaphragm during transmitting the vibration wave.

Abstract: A tunable earphone includes a speaker for making sound, a shell receiving the speaker and defining a resonance cavity therein, and a tunable element rotatably and removably mounted on the shell. The shell has a top thereof recessed downward to form a receiving cavity. A supporting plate is formed at a bottom of the receiving cavity. A damping vent is opened in the supporting plate to connect the resonance cavity with the receiving cavity. The tunable element defines a through hole passing therethrough and aligned with the damping vent of the shell. A damping plate is integrally molded on a bottom of the tunable element. The damping plate is located in the receiving cavity and against the supporting plate to separate between the damping vent and the through hole for smoothening the frequency response of the sound pressure level in the resonance cavity while the speaker making sound.

Abstract: A tunable earphone includes a speaker for making sound, a shell receiving the speaker and defining a resonance cavity therein, and a tunable element rotatably and removably mounted on the shell. The shell has a top thereof recessed downward to form a receiving cavity. A supporting plate is formed at a bottom of the receiving cavity. A damping vent is opened in the supporting plate to connect the resonance cavity with the receiving cavity. The tunable element defines a through hole passing therethrough and aligned with the damping vent of the shell. A damping plate is integrally molded on a bottom of the tunable element. The damping plate is located in the receiving cavity and against the supporting plate to separate between the damping vent and the through hole for smoothening the frequency response of the sound pressure level in the resonance cavity while the speaker making sound.

Abstract: A prompting device for an optical finger navigation sensor, a prompting method thereof, and a prompting system are provided. The prompting device includes at least one light-emitting unit, which is disposed around the OFN sensor. The prompting device is integrated with the OFN sensor. According to the finger position transmitted back to the operating system from the OFN sensor and the action that the operation system can do accordingly, the light-emitting unit provides a blue or green optical indication for the user to perform the next action. Or when the operation system performs the action needed to prompt, the prompting device can prompt the user for the next action. Therefore, the optical indication of the present invention can prompt the user to perform the action, thereby providing a convenience for the user.

Abstract: Provided is an adjustable audio headphone, including a headphone body, a damping object and a pressing mechanism. The headphone body includes a headphone shell, which forms a sound cavity in inside thereof and a receiving chamber on one end thereof. A bottom surface of the receiving chamber forms a through hole communicated with the sound cavity. The damping object is made of compressible material such as sponge, elastic plastic, textile and so on and. The damping object is placed into the receiving chamber of the headphone shell. The pressing mechanism is mounted on the headphone shell and is capable of pressing the damping object. The adjustable audio headphone of the present invention can compress the damping object to change the density of the damping object by employing the pressing mechanism, thereby varying the pressure of the sound cavity and realizing the object of adjusting the audio thereof.

Abstract: Provided is an earphone, including an earphone body and an earphone cap. The earphone body includes an earphone shell forming a sound cavity and disposing a sound-guiding pipe. The sound-guiding pipe disposes at least one through hole. The earphone cap is rotatably mounted on the earphone body and includes a main body and a barrel. The barrel is located on the inside of the main body and arranged to encompass the sound-guiding pipe. The barrel disposes at least one opening, which is arranged to be aligned or misaligned with the part or whole of the through hole. The earphone of the present invention can make the opening be aligned or misaligned with and the part or whole of the through hole by rotating the earphone cap, thereby varying the pressure of the sound cavity to attain the object of adjusting sound effect.

Abstract: A headset includes a housing having a first wall with at least one sound hole formed thereon, a loudspeaker unit disposed in the housing and adjacent to the sound hole, a blocking component mounted in the housing and capable of slidably moving towards and backwards the first wall to form an adjunctive chamber therebetween, and an adjustive component rotatably mounted to the housing. The adjustive component is connected with the blocking component in a way of screw link in order to drive the blocking component to move towards and backwards the first wall when the adjustive component is driven to rotate.

Abstract: A passive radiator comprises a frame body having an opening; a diaphragm disposed on the frame body and located corresponding to the opening; and a surround which joins with an outer margin of the diaphragm; wherein the diaphragm is extended from a radial position to a center position to form a recess cavity, and the recess cavity has a replaceable weighting unit disposed therein. The passive radiator can improve bass tone performance for audio products.

Abstract: A headphone has a shell, a speaker received in the shell for making sound, a covering element fixed on the shell. A top of the shell is recessed to form a receiving cavity. A damping plate is received in the receiving cavity for separating the receiving cavity and the resonance cavity. The damping plate smoothes the frequency response of the sound pressure level in the resonance cavity while the speaker making sound, which adjusts the sound and achieves a better sound effect. It is convenient to change the damping plate. As the damping plates made of different materials have the different sound effects, users can change the damping plate for changing the sound effect. So, the user can enjoy different sound effects by only changing the damping plate.

Abstract: A laser projector has a cursor control unit, a main control unit, a laser generator and a scanning lens. The cursor control unit is used to generate and transmit cursor signals; the main control unit is used to obtain and process video signals and the cursor signals, both of which are combined into cursor video signals and transmitted; the laser generator is coupled to the main control unit for generating and projecting laser beam according to the cursor video signals; and the scanning lens is coupled to the main control unit for receiving the laser beam and projecting it outward in a predetermined scanning manner. The laser projector of the present invention uses laser resource itself to project laser cursor generated by the cursor control unit onto a screen, so that it is unnecessary to additionally use a laser pointer, and the operation of the laser projector is relatively simple.

Abstract: Provided is a tunable earphone, including an earphone shell, a sound generation device and a tuning device. The earphone shell disposes a pivot hole and a number of tuning holes. The sound generation device is located in the earphone shell. The tuning device includes a tuning member and a damping body. The tuning member includes a covering body being adjustable for covering all or part of the tuning holes and a connecting rod. One end of the connecting rod is fixedly connected to the covering body, and the other end of the connecting rod extends out of the earphone shell. The damping body is placed into the corresponding tuning hole for auxiliary adjusting the pressure of the low sound inner cavity, so that the present tunable earphone can generate the different sound effect of the low frequency to satisfy the different users' needs.

Abstract: Provided is an adjustable audio headphone, including a headphone body, a damping object and a pressing mechanism. The headphone body includes a headphone shell, which forms a sound cavity in inside thereof and a receiving chamber on one end thereof. A bottom surface of the receiving chamber forms a through hole communicated with the sound cavity. The damping object is made of compressible material such as sponge, elastic plastic, textile and so on and. The damping object is placed into the receiving chamber of the headphone shell. The pressing mechanism is mounted on the headphone shell and is capable of pressing the damping object. The adjustable audio headphone of the present invention can compress the damping object to change the density of the damping object by employing the pressing mechanism, thereby varying the pressure of the sound cavity and realizing the object of adjusting the audio thereof.

Abstract: Provided is an earphone, including an earphone body and an earphone cap. The earphone body includes an earphone shell forming a sound cavity and disposing a sound-guiding pipe. The sound-guiding pipe disposes at least one through hole. The earphone cap is rotatably mounted on the earphone body and includes a main body and a barrel. The barrel is located on the inside of the main body and arranged to encompass the sound-guiding pipe. The barrel disposes at least one opening, which is arranged to be aligned or misaligned with the part or whole of the through hole. The earphone of the present invention can make the opening be aligned or misaligned with and the part or whole of the through hole by rotating the earphone cap, thereby varying the pressure of the sound cavity to attain the object of adjusting sound effect.

Abstract: An automatic tunable earphone connected with an external audio device has an audio signal output unit, a loudspeaker, a microphone, a data memorizer and an arithmetic unit. The audio signal output unit outputs a testing audio signal into the loudspeaker for generating a testing sound which is transmitted into an ear canal. The microphone placed in the ear canal receives the sound that has past through the ear canal and outputs a contrastive audio signal into the data memorizer for restoring. The arithmetic unit compares the contrastive audio signal with the testing audio signal to find out the frequency that needs to be strengthened. The frequency is restored into the data memorizer. When the external audio device outputs a raw signal, the arithmetic unit process the raw signal according to the frequency restored and outputs the processed signal into the loudspeaker for making sound.

Abstract: A headphone has a shell, a speaker received in the shell for making sound, a covering element fixed on the shell. A top of the shell is recessed to form a receiving cavity. A damping plate is received in the receiving cavity for separating the receiving cavity and the resonance cavity. The damping plate smoothes the frequency response of the sound pressure level in the resonance cavity while the speaker making sound, which adjusts the sound and achieves a better sound effect. It is convenient to change the damping plate. As the damping plates made of different materials have the different sound effects, users can change the damping plate for changing the sound effect. So, the user can enjoy different sound effects by only changing the damping plate.

Abstract: An in-ear headphone has a shell, a loudspeaker accommodated in a space of the shell for making sound, an ear cushion fixed on a supporting portion of the shell. A through channel passes the whole supporting portion for connecting the space with outside to transmit the sound produced by the loudspeaker. The ear cushion has a through hole passing through the whole ear cushion. A top of the through hole is enlarged to form a first receiving cavity for receiving a first damper. The first damper can seal against the outside region preventing the particles into the in-ear headphone and damaging the loudspeaker. Also, the first damper adjusts the sound effect of the in-ear headphone. Moreover, the first damper can be taken off the first receiving cavity easily and replaced by another one. So, the user can experience varies sound effect by changing the first damper.

Abstract: A headset has a hollow housing having a front wall with at least one sound hole formed thereon, and a rear wall facing the front wall having a plurality of air holes formed thereon. A loudspeaker unit is disposed in the housing and adjacent to the sound hole. An adjustive component is rotatably mounted to the rear wall of the housing. The adjustive component has an adjustive switch outside the rear wall and a blocking slice against an inner surface of the rear wall and connected with the adjustive switch. The adjustive switch is capable of controlling the blocking slice to swing and halt repetitiously, for altering the number of the covered air holes when the adjustive switch is driven to rotate.