Alfred D Goldsmith

45985766, Jul 8, 1986

Jun 25, 1984

6/624002

Alfred D. Goldsmith - Valencia CA
Roc V. Fleishman - Venice CA

National Technical Systems - Los Angeles CA

G01N 710

73 19

A fluid detector device and method capable of detecting the presence of a first fluid such as a gas, which may be mixed with a second fluid, in an external atmosphere where the first fluid is a hydrocarbon gas such as methane or the like, mixed with air, a semi permeable membrane, which extends across an opening of a detection chamber is utilized. Air and the gas have different rates of permeability across the membrane causing a volume change in the chamber. A volume sensitive device signals the presence of the gas. A displaceable element is shiftable in response to the volumetric change in the chamber, allowing the change without significant pressure changes. A capacitive plate can be integral with a displaceable element so that capacitance varies with the change in volume caused by the presence of the gas.

20170307906, Oct 26, 2017

Apr 26, 2017

15/498207

Alfred David Goldsmith - Irvine CA, US
David G. Pelka - Los Angeles CA, US

G02C 7/10
G02C 7/10
G02C 7/10
G02F 1/133
G02F 1/133

A sunglass using a transparent, pixelated, liquid crystal (LC) two-dimensional array, or functionally equivalent technology, in possible combination with optical materials to selectively attenuate or block the Sun or its reflection from the field of view (FOV) of the person wearing the glasses is disclosed. An imaging camera located within the sunglasses detects the Sun, with software determining its position via centroiding algorithms. The Solar position is then translated, and, if necessary, rotated, scaled and skewed for the appropriate pixels in the left and right lens of the sunglass, where left eye and right eye “circles” are created to block or attenuate the Sun's image from the person wearing the glasses. Additionally, the sunglass lens will have protection against the Sun's ultra-violet (UV) rays. The internal power source may be either replaceable, or charged by solar or standard methods.