Peakvision LLC

Other

USA as Represented by Secretary of the Navy

Vanderbilt University

David V Kerns

Jimmy Lee Davidson

J Paul Moore

Robert R Whitlock

David V Kerns, Jr

Weng Poo Kang

Michael I Bell

Mickey Evans Howell

Sherra Kerns

Wang Poo Kang

Diamond microtip field emitters are used in triode vacuum microelectronic devices, sensors and displays. Diamond triode devices having integral anode and grid structures can be fabricated. Ultra-sharp tips are formed on the emitters in a fabrication process in which diamond is deposited into mold cavities in a two-step deposition sequence. During deposition of the diamond, the carbon graphite content is carefully controlled to enhance emission performance. The tips or the emitters are treated by post-fabrication processes to further enhance performance.

Diamond triode devices with a diamond microtip emitter

A lens for eyeglasses is provided with two or more optical zones on the lens body having different optical properties that enhance visualization of different scenes, including target objects within the scenes, that are associated with a specific recreational activity such as tennis, skiing, golf, hunting, or fishing. A first optical zone in an upper portion of the lens can be provided with pre-defined focus distance, transmission percentage, and/or transmission spectrum parameters for enhanced visualization of distant scenes associated with the specific recreational activity. A second optical zone in a lower or outer portion of the lens can be provided with different pre-defined focus distance, transmission percentage, and/or transmission spectrum parameters for enhanced visualization of close-in scenes associated with the specific recreational activity.

Eyeglass lens with multiple optical zones having varying optical properties for enhanced visualization of different scenes in outdoor recreational activities

A lens for eyeglasses is provided with two or more optical zones on the lens body having different optical properties that enhance visualization of different scenes, including target objects within the scenes, that are associated with a specific recreational activity such as golf, hunting, or fishing. A first optical zone in an upper portion of the lens can be provided with pre-defined focus distance, transmission percentage, and/or transmission spectrum parameters for enhanced visualization of distant scenes associated with the specific recreational activity. A second optical zone in a lower or outer portion of the lens can be provided with different pre-defined focus distance, transmission percentage, and/or transmission spectrum parameters for enhanced visualization of close-in scenes associated with the specific recreational activity.

The transmission cathode for X-ray generation is a device wherein an electrical current generated by a low voltage power supply produces an electron flow from the transmission cathode that is accelerated by a high voltage power supply towards an anode where X rays are emitted on impact. As the X rays are emitted, a primary beam passes through the cathode striking a sample placed outside the tube. The transmission cathode is X comprised of an electron emitter structure, preferably, an electron field emitter diode or thermionic emitter or a photoemitter or a nanotube or a pyroemitter or a piezoemitter, fabricated, preferably of elements of atomic numbers of 14 (silicon) or below, with electrically conductive components or conductive mechanical structural components, preferably, conductive silicon or diamond or aluminum or beryllium metal, and non-conductive electrical insulators or non-conductive mechanical structural components, preferably, diamond or silicon dioxide or boron carbide. The transmission cathode is transmissive to those X rays that freely flow through the transmission cathode.

Transmission cathode for X-ray production

The disclosed invention is a programmable gain feedback amplifier consisting of a high gain (op-amp) amplifier, feedback elements and fuse networks in the feedback and/or input paths, a decoding circuit for receiving an input programming command signal, and thereby selectively blowing (or opening) the proper fuses to establish the desired signal attenuation in said networks. After programming, the gain of the amplifier circuit is related to the total attenuation of the network(s), is permanently set, and does not require the programming signal to be continuously applied. Embodiments are described which are compatible with monolithic microelectronic fabrication techniques.

Growing community of inventors

Natick, MA, United States of America

David V Kerns