Abstract: A 360 Degree Forward View Integral Imaging System comprises a panoramic imaging element capable of imaging a full 360 degree panoramic image and a forward image onto a single plane. This system can be integrated with a variety of image capture systems such as a CCD camera, a film based camera, or a fiber optic bundle coupled to a CCD camera for remote imaging. The applications of such a system include but are not limited to pipe inspection, bore hole inspection and remote imaging.
Type:
Grant
Filed:
October 2, 1998
Date of Patent:
February 22, 2000
Assignee:
InterScience, Inc.
Inventors:
Jeffrey A. Beckstead, Steven R. Nordhauser
Abstract: A reconfigurable compound diffraction grating is fabricated using microelectomechanical systems (MEMS) technology. The compound grating structure can be viewed as the superposition of two separately configured gratings. A common lower electrode is placed beneath selected beam elements, known as deflectable beams, to achieve the desired grating configuration (i.e. every other, every third, every fifth, etc.) of the beams in the primary grating. These deflectable beams alone comprise a secondary, lower resolution grating structure. The beam elements are linked to a common upper electrode. Voltage applied across the electrodes creates an electrostatic force that pulls the selected beams down toward the underlying electrode. Changing the vertical position of the selected beams with respect to the other stationary beams presents a different ruling spacing distribution to the incoming radiation. By changing this distribution, the diffracted power among individual diffraction orders of the wavelengths is altered.
Abstract: This invention relates to an apparatus for making highly sensitive measurements of acceleration. The vibration sensor includes the use of a movable gate field effect transistor to sense the motion of a cantilever beam with respect to its base, it also includes an actuator element formed by a pair of electrodes actuating electrostatically on the beam. A feedback control loop is also included for force balance operation resulting in a very wide dynamic range for the sensor.
Type:
Grant
Filed:
March 20, 1997
Date of Patent:
February 23, 1999
Assignee:
InterScience, Inc.
Inventors:
Daniel M. Edmans, Adolfo Gutierrez, Christopher Cormeau, Edward Maby
Abstract: An axial gap rotary electric machine in which the conduction path design for disc-shaped armatures is specifically matched to the configuration of the axial magnetic field. The design achieves an axial gap rotary electric machine which is light in weight and capable of high power density per unit weight. The design can be used as an electric generator or an electric motor.