Location History:
- Clinton, WA (US) (1993)
- Langley, WA (US) (1994 - 1995)
Company Filing History:
Years Active: 1993-1995
Title: Innovations of Syed T Shafaat
Introduction
Syed T Shafaat is an accomplished inventor based in Langley, WA (US). He has made significant contributions to the field of optical data storage and has been awarded three patents for his innovative designs. His work focuses on enhancing the functionality and efficiency of optical devices.
Latest Patents
One of his latest patents is titled "Focus error detection using an equal path length lateral shearing." This invention provides an equal path length lateral shearing interferometer and its implementation in focus detection devices, particularly for optical data storage devices. The interferometer comprises a beamsplitter and two abutting roof prisms. Shifting the placement of a roof prism along an axis orthogonal to the direction of light propagation and to the peak of the roof creates a lateral shear between the two output beams. Rotating a roof prism about this axis produces a tilt between the two output beams. This creates an interference pattern with a rotational orientation that is a function of the focus of the beam impinging on the optical storage medium. A pattern sensor is provided to adjust the focus of the beam in an accurate and dynamic manner.
Another notable patent is the "Cartridge adaptor." This adaptor cartridge is designed for holding a 90 mm optical disk cartridge for insertion into a 130 mm disk drive apparatus. The cartridge adaptor emulates the external dimensions and features of a 130 mm cartridge so that it can be loaded into and manipulated by the 130 mm drive in the same manner as a normal 130 mm cartridge. The cartridge adaptor contains a shutter arm for opening the 90 mm cartridge door upon insertion of the cartridge into the adaptor cartridge, similar to how a 90 mm cartridge door is opened when inserted into a 90 mm drive. The adaptor cartridge also includes a pseudo 90 mm spindle located in an adaptor hub, which fits within the centering hole of the 90 mm media disk. Additionally, the adaptor cartridge carries an annular magnet for attracting and holding the 90 mm media disk on the adaptor hub.
Career Highlights
Syed T Shafaat is currently employed at International Business Machines Corporation, commonly known as IBM. His work at IBM has allowed him to further develop his innovative ideas and contribute to cutting-edge technology in the field of optical data storage.
Collaborations
Some of his notable coworkers include Edwin Ralph Childers and Dale H