摘要:
A power tool and components and accessories therefor are provided. The power tool having at least one of a movable extension member, a retractable handle, a retractable workpiece support, a modular base, a digital display, a display connected to a table, a miter gauge with passing angle setting assembly, a fence with a handle operable to both move the fence and secure it in position, a retractable rail, an electrical outlet, and leg extensions.
摘要:
A polarizing beam splitter is disclosed that includes a first prism, a second prism, and a reflective polarizing film disposed between the first prism and the second prism. The first prism comprises a first polymeric material, and has a first outer curved surface and an additional outer surface. The second prism comprises a second polymeric material, which in some embodiments may be the same as the first polymeric material, and has a second outer curved surface.
摘要:
A cutting tool in accordance with the invention may include an arbor lock, located within its housing, for preventing the arbor from rotating to assist an operator in installing, removing or replacing the saw blade. The cutting tool may also include an internal storage compartment for storing items or equipment, including those for use in connection with the cutting tool, an internal mobility system to assist the operator in moving the cutting tool when desired, and a cutting implement angle memory indicator for aiding the operator in keeping track of a desired cutting implement position. The cutting tool may also be provided with a sturdy bench top extension extending out from the cutting tool housing which the operator may use to perform a variety of workshop tasks including some not related to the use of the cutting tool itself.
摘要:
Methods and apparatus are provided for testing an acoustic device that has multiple transducing elements adapted for conversion between acoustic and electrical signals. An electrical transmission signal is generated. The electrical transmission signal is transmitted to one of a first set of channels through a relay element in accordance with a state of the relay element. The electrical transmission signal is transmitted to one of a second set of channels through a multichannel switch of an adapter in accordance with a state of the multichannel switch. The electrical transmission signal is transmitted to a selected transducing element. An electrical received signal is received from the acoustic device in response to the electrical transmission signal.
摘要:
Methods and apparatus are provided for testing an acoustic device that has multiple transducing elements adapted for conversion between acoustic and electrical signals. An electrical transmission signal is generated. The electrical transmission signal is transmitted to one of a first set of channels through a relay element in accordance with a state of the relay element. The electrical transmission signal is transmitted to one of a second set of channels through a multichannel switch of an adapter in accordance with a state of the multichannel switch. The electrical transmission signal is transmitted to a selected transducing element. An electrical received signal is received from the acoustic device in response to the electrical transmission signal.
摘要:
Digital data bits are stored at storage locations at plural depths within a holographic storage medium as selective, localized alterations in a format hologram. Micro-localized regions of a reflection format hologram extending throughout the medium are deleted by focusing a high-power laser beam at desired storage locations. The deletion regions have a lower reflectivity than the surrounding parts of the format hologram. Tunable-focus storage and retrieval heads, as well as dynamic aberration compensators, are used for multi-depth access. Storage and retrieval may each be achieved with a single head.
摘要:
This invention relates to a surface acoustic wave device which is comprised of a single domain lithium niobate layer on a multiple domain lithium niobate substrate. On the single domain layer are launching and receiving interdigitated electrode patterns. Spurious responses generated by bulk waves from the launching electrode and transmitted to the receiving electrode are substantially reduced.
摘要:
Single crystal electro-optic material useful for recording phase holograms comprises lithium niobate or lithium tantalate doped with iron and silicon.
摘要:
A vocal music production apparatus for converting vocalized music to produced instrumentals includes a housing front side, a housing back side, a housing left side, a housing right side, a housing top side, and a housing bottom side. A touch screen is coupled to the housing within the housing front side. A microprocessor is coupled within the housing and is in operational communication with the touch screen. The microprocessor includes a digital synthesizer to convert vocal audio inputs to digital music. A microphone, a speaker, a headphone jack, and a battery are coupled to the housing and are in operational communication with the microprocessor. A port is coupled to the housing and is in operational communication with the microprocessor and the battery. A plurality of control buttons is coupled to the housing and is in operational communication with the microprocessor.
摘要:
An imaging system for use in an exterior or interior of a vehicle comprises a camera having an image sensor with an associated optical path and viewing area and an infrared filter associated with the image sensor for automatically selectively attenuating infrared radiation according to light conditions of the viewing area. The imaging system can further comprise a selectively acutable supplemental illumination system comprising at least one light source for providing supplemental illumination to the viewing area of the camera.