Abstract: Eyewear is provided for use in wet settings, the eyewear including an eyeglass frame, a pair of arms, and a pair of lenses. The frame is connected to the arms, one each on opposite ends of the frame, by a hinge, and the frame, arms and hinges are formed of non-rusting materials. The lenses are made of plastic and are set in the frame, and wherein the lenses are coated with an anti-fog coating. The frame may further define a ring adapted to be hung onto a hanger. Alternatively, one of the arms further defines a ring adapted to be hung onto a hanger.

Abstract: Lighted glasses are provided that selectively project light forwardly of the glasses while also having a thin profile by avoiding the use of temple arms. The lighted glasses include a central light mount and a pair of lenses connected to the light mount by resilient arms. The arms allow a user to pull the lenses generally away from each other to fit on a wearer's nose. The light mount is configured to house a light assembly that includes a battery, a light source, and a switch to control operation of the light source.

Abstract: A single lens pince-nez, comprising a bridge member (11) adapted to extend over the bridge of the nose of a person and engage the sides of the bridge of the nose, and a single lens (10) attached to the bridge member (11) in a position located in front of one eye of the person when the person wears the pince-nez, is very suitable for use as make-up “glasses”, since it does not obstruct the applying of make-up on one side of the face of the wearer of the “glasses”, and is comfortable to wear thanks to its low weight. By selecting a high refractive index glass for the lens (10) and a beta titanium alloy for the bridge member (11), the weight can by reduced even more. Preferably, the single lens (10) is pivotally attached to the bridge member (11), so that it can be swung vertically or horizontally from one eye to the other.

Abstract: The make-up eyeglass frame is provided with an adjustable nose piece assembly for adjusting the eyeglasses to the nose and face of a wearer. The nose piece assembly is readily removable from a bracket secured between two lens receiving sections for replacement purposes or for storing in a flattened condition. A pair of temples are hingedly mounted to the lens receiving sections to be folded into a flattened condition.

Abstract: An active noise control system using a compact sound source is effective to reduce aircraft engine duct noise. The fan noise from a turbofan engine is controlled using an adaptive filtered-x LMS algorithm. Single multi channel control systems are used to control the fan blade passage frequency (BPF) tone and the BPF tone and the first harmonic of the BPF tone for a plane wave excitation. A multi channel control system is used to control any spinning mode. The multi channel control system to control both fan tones and a high pressure compressor BPF tone simultaneously. In order to make active control of turbofan inlet noise a viable technology, a compact sound source is employed to generate the control field. This control field sound source consists of an array of identical thin, cylindrically curved panels with an inner radius of curvature corresponding to that of the engine inlet.

Abstract: A support arm with a holder for a bearing element such as a nose pad for fastening the holder to a respective frame of eyeglasses. The support arm is constituted, along at least a portion of its length, by a core of hard material and inner and an outer layer of wires wound spirally as a jacket around the core. Because of this combination of materials, the support arm has both adequate stability in the normal position when the glasses are worn by the glasses wearer and also flexible resiliency and ensuing restoration of the normal position in the event of an external strain such as an impact, without permanent deformation of the support arm.

Abstract: Repetitive phenomena cancelling controller arrangement for cancelling unwanted repetitive phenomena comprising known fundamental frequencies. The known frequencies are determined and an electrical known frequency signal corresponding to the known fundamental frequencies of the unwanted repetition phenomena is generated. A plurality of sensors are employed in which each sensor senses residual phenomena and generates an electrical residual phenomena signal representative of the residual phenomena. A plurality of actuators are provided for cancelling phenomena signals at a plurality of locations, and a controller is utilized for automatically controlling each of the actuators as a predetermined function of the known fundamental frequencies of the unwanted repetitive phenomena and of the residual phenomena signals from the plurality of sensors.

Abstract: A four layer thin film metallization system is comprised of layers of tantalum, chromium, copper and gold and is useful in high resolution, low loss microstrip circuits. The metallization system is compatible with lead-tin solder and, in addition, provides low insertion losses at X-band frequencies.