8 results about "Optical pickup" patented technology

The magnetic sensor and optical sensor can be easily positioned so that their respective design positions are correct for the magnet and optical disc, respectively. [Solution] The rotation detection device 1 comprises a substrate 2 having an insertion hole 10 for a rotating shaft 100, a magnetic field forming member 3 that rotates with the rotating shaft 100, a plurality of magnetic sensors 20 arranged around the magnetic field forming member 3, a casing 22 provided on the substrate 2 that houses the plurality of magnetic sensors 20, an optical sensor 6 provided on the substrate 2 on the opposite side from the plurality of magnetic sensors 20, and an optical disk 5 positioned opposite the substrate 2 with the optical sensor 6 in between, which rotates with the rotating shaft 100. The device has an adjustment mechanism that allows the position of the plurality of magnetic sensors 20 relative to the magnetic field forming member 3 to be adjusted by adjusting the position of the casing 22 relative to the substrate 2 while the substrate 2 is positioned by adjusting the position of the optical sensor 6 relative to the optical disk 5.

The application discloses a drive mechanism of an optical disc machine and an optical pickup assembly thereof, which is connected between a screw rod of a stepping motor and the optical pickup assembly, and enables the optical pickup assembly to move back and forth along the axial direction of main guide rods and vice guide rods. The drive mechanism comprises a special-shaped bearing connecting piece and a spring. The bearing connecting piece is provided with oblique teeth which are engaged with the screw rod. The spring is arranged at the back of the oblique teeth, so that the oblique teeth are always engaged with the screw rod. The bearing connecting piece is more stable and reliable when being driven by the oblique teeth and the screw rod. In combination with the pre-pressing force of the elastic element, the reliable and stable tracking movement of the optical pickup assembly is effectively ensured. The structure is reasonable and simple, the installation and operation are convenient, and the maintenance cost after sale is remarkably reduced. The scheme is practical and effective, and especially applied to the core of the optical disc machine (commonly known as the optical drive) configured by the traditional desktop computer, so that good profit value can be realized.

A photonic image rejection radio frequency (RF) mixer and a receiver implementing the same may suppress undesired mirror image signals having frequencies at a spectral location that is mirror-symmetric, with respect to a local oscillator (LO), to that of a signal of interest. An upconverted optical beam corresponding to a captured RF beam is extracted by an optical processor. The upconverted optical beam is mixed with the LO to obtain a desired composite optical signal and an undesired composite optical signal, each providing a corresponding beat frequency optical signal at the same frequency. The desired and undesired composite optical signals are captured by multiple optical pickups with relative phase shifts in their beat frequency optical signals which are converted into corresponding electrical signals and combined to suppress the undesired signal.

1. Name of the designed product: photoelectric pick-up. 2. Use of the designed product: equipment for collecting sound and converting it into an electric signal. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

1. The name of the design product: optical head machine (01). 2. The use of the design product: for hair. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

1. Name of the product in this design: Photoelectric microphone. 2. Purpose of this design: To create an analog record photoelectric pickup that achieves high signal-to-noise ratio and high sound fidelity through photoelectric sensing technology. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to a compact optical pickup device, include: light receiving part, between optical equipment fixed as optical pickup quick detachable interface, light beam collector is used for collecting light beam, light beam adapter is connected with light beam collector at one end, adjusting frame is equipped with mirror in it, and mirror is obliquely arranged, connecting piece is for light inlet end, and the light to be collected passes through mirror reflection and is collected to light beam collector in connecting piece place. The compact optical pickup device, the light to be collected enters from the light inlet end of connecting piece, and the angle of mirror is adjusted through the threaded pair on adjusting frame to realize that the light beam comes in is reflected to the center of light beam collector, can reduce the space of optical pickup since the change of the direction of light path propagation, in addition, the mode that top screw and swallow-tailed groove are used between light beam collector, light beam adapter, adjusting frame, mirror and connecting piece, and the dismounting is convenient and fast, can greatly save time.