Abstract: A lens cover includes a housing defining an optical aperture. A pair of opposed lens cover blades are each pivotally mounted to the housing at a common pivot point. A biasing member biases the blades apart from one another about the pivot point to uncover the optical aperture in an open position. A pair of magnetic members is included, each magnetic member being mounted to a respective one of the blades to bias the blades together to cover the optical aperture in a closed position.

Abstract: A lens cover includes a housing defining an optical aperture. A pair of opposed lens cover blades are each pivotally mounted to the housing at a common pivot point. A biasing member biases the blades apart from one another about the pivot point to uncover the optical aperture in an open position. A pair of magnetic members is included, each magnetic member being mounted to a respective one of the blades to bias the blades together to cover the optical aperture in a closed position.

Abstract: A multi-tiered approach to combating reverse engineering of electronics is disclosed herein. The encapsulant utilized with the optical sensor may be selected based on being substantially being opaque to X-ray inspection. In this way, visible public inspection to gain competitive intelligence may be reduced and operation of the electronics may remain unaffected. Additionally, a thin filament of wire embedded just below the surface of the encapsulant could be used as an electronic tripwire in response to being severed and/or dissolved by the reverse engineering strong solvents and acids.

Abstract: An imaging assembly includes a base member defining an expansion chamber therein, the base member defining a gas inlet for receiving a compressed gas and a gas outlet for expelling expanded gas, and a focal plane array assembly mounted to the base member including a sensor and a lens.

Abstract: An imaging assembly includes a base member defining an expansion chamber therein, the base member defining a gas inlet for receiving a compressed gas and a gas outlet for expelling expanded gas, and a focal plane array assembly mounted to the base member including a sensor and a lens.

Abstract: A system for determining lens position includes a first sensor component disposed on a stationary housing of a camera. A second sensor component is disposed on a rotating lens component of the camera. A processor is operatively connected to the first and second sensory components to identify the position of the rotating lens component of the camera based on a difference between a first angle defined by the first sensor component and Earth's gravitational field and a second angle defined by the second sensor component and Earth's gravitational field.

Abstract: A lens housing includes a main housing, a lens array, a lens housing, and an athermalization bushing. The lens array has a thermally variable focal length that determines a focal point along a focal axis. The lens housing contains the lens array and is situated within the main housing, and is capable of translating relative to the main housing along the focal axis. The athermalization bushing is situated axially between the lens housing and the main housing, such that thermal expansion of the athermalization bushing translates the lens housing along the focal axis. This translation causes the focal point to remain substantially fixed relative to the main housing as the focal length of the lens array varies across an operational temperature range.

Abstract: A system for determining lens position includes a first sensor component disposed on a stationary housing of a camera. A second sensor component is disposed on a rotating lens component of the camera. A processor is operatively connected to the first and second sensory components to identify the position of the rotating lens component of the camera based on an angle between the first and second sensor components.

Abstract: A multi-tiered approach to combating reverse engineering of electronics is disclosed herein. The encapsulant utilized with the optical sensor may be selected based on being substantially being opaque to X-ray inspection. In this way, visible public inspection to gain competitive intelligence may be reduced and operation of the electronics may remain unaffected. Additionally, a thin filament of wire embedded just below the surface of the encapsulant could be used as an electronic tripwire in response to being severed and/or dissolved by the reverse engineering strong solvents and acids.

Abstract: A system for determining lens position includes a first sensor component disposed on a stationary housing of a camera. A second sensor component is disposed on a rotating lens component of the camera. A processor is operatively connected to the first and second sensory components to identify the position of the rotating lens component of the camera based on a difference between a first angle defined by the first sensor component and Earth's gravitational field and a second angle defined by the second sensor component and Earth's gravitational field.

Abstract: A system for determining lens position including a first capacitor plate disposed on a stationary housing of a camera. A second capacitor plate is disposed on a rotating lens component of the camera. A processor is operatively connected to the first and second capacitor plates to identify the position of the lens of the camera based on capacitance between the first and second capacitor plates.

Abstract: A system for determining lens position includes a first sensor component disposed on a stationary housing of a camera. A second sensor component is disposed on a rotating lens component of the camera. A processor is operatively connected to the first and second sensory components to identify the position of the rotating lens component of the camera based on an angle between the first and second sensor components.

Abstract: A system for determining lens position including a first capacitor plate disposed on a stationary housing of a camera. A second capacitor plate is disposed on a rotating lens component of the camera. A processor is operatively connected to the first and second capacitor plates to identify the position of the lens of the camera based on capacitance between the first and second capacitor plates.

Abstract: A fabric filter (barrier filter) with an inlet design for high particle load that allows for individual compartments in a row to be isolated by closure of a sloped inlet damper by which the sloped design allows particulate during damper closure to flow to the opposing compartment hopper preventing damper failure from the accumulated weight of the particulate load.

Abstract: An exothermic anti-piping composition of the type which is formed of a refractory heat-insulating material, an exothermic compound, and an expanding media, and wherein the expanding media is predominantly either vermiculite ore or perlite ore along with less than 1% by weight of acid-treated graphite flakes.