Abstract: An imaging system includes a first light source configured to provide a first light to an object, a second light source configured to provide a second light to said object, a color camera configured to capture an image of the object, a first mirror disposed between the first light source and said object, a second mirror disposed between the second light source and said object, a beam splitter disposed between the color camera and said object, a first filter for the first light source, a second filter for the second light source, and a processor configured to determine at least one of a shape, a deformation, and a strain measurement of said object from the image.

Abstract: An imaging system includes a first light source configured to provide a first light to an object, a second light source configured to provide a second light to said object, a color camera configured to capture an image of the object, a first mirror disposed between the first light source and said object, a second mirror disposed between the second light source and said object, a beam splitter disposed between the color camera and said object, a first filter for the first light source, a second filter for the second light source, and a processor configured to determine at least one of a shape, a deformation, and a strain measurement of said object from the image.

Abstract: Embodiments of a shearography system may include light sources configured to produce beams of light to illuminate a test area. Each of the beams of light may include a different wavelength. A camera may be configured to obtain intensity information corresponding to reflections of the lights off of the test area. An optical shearing device may be disposed in an optical path between the light sources and the camera and the optical shearing device may be configured to provide a shearing angle.

Abstract: A shearography system may include light source that may be configured to produce a beam of light to illuminate a test area, a camera, and an optical path between the light source and the camera, the test area disposed in the optical path between the light source and the camera. In embodiments, an image plane may be disposed in the optical path between the test area and the camera. In embodiments, the camera may be configured to obtain intensity information that may correspond to specular reflections of the beam of light off of the test area via diffuse reflections of the beam of light off of the image plane. The intensity information may correspond to out-of-plane strain of the test area.

Abstract: Embodiments of a shearography system may include light sources configured to produce beams of light to illuminate a test area. Each of the beams of light may include a different wavelength. A camera may be configured to obtain intensity information corresponding to reflections of the lights off of the test area. An optical shearing device may be disposed in an optical path between the light sources and the camera and the optical shearing device may be configured to provide a shearing angle.

Abstract: A method for detecting the integrity of a bond of a multi-piece work piece includes capturing a first image of the work piece, stressing the work piece, capturing a stressed image of the work piece, and comparing the first image of the work piece with the stressed image of the work piece to determine the integrity of the bond.

Abstract: A method for detecting the integrity of a bond of a multi-piece work piece includes capturing a first image of the work piece, stressing the work piece, capturing a stressed image of the work piece, and comparing the first image of the work piece with the stressed image of the work piece to determine the integrity of the bond.

Abstract: The invention provides a fast variable optical attenuator including a reflective membrane that serves as a varifocal mirror. Electrostatic deflection of the mirror defocuses the optical system and attenuates an optical signal launched to the mirror from an input port to an output port. Since the mirror is generally limited to deflections less than 1 micron, fast attenuation within a small (<5 dB) dynamic range is achieved. The dynamic range is improved by combining the fast attenuator with a slower attenuator. In the preferred embodiment, the slow and fast attenuator are not coupled via optical waveguides, but rather are optically coupled via free space or are integrated in the same device. Advantageously, this compact arrangement reduces the excess loss associated with optical fiber coupling and lowers packaging costs.

Abstract: The invention provides a fast variable optical attenuator including a reflective membrane that serves as a varifocal mirror. Electrostatic deflection of the mirror defocuses the optical system and attenuates an optical signal launched to the mirror from an input port to an output port. Since the mirror is generally limited to deflections less than 1 micron, fast attenuation within a small (<5 dB) dynamic range is achieved. The dynamic range is improved by combining the fast attenuator with a slower attenuator. In the preferred embodiment, the slow and fast attenuator are not coupled via optical waveguides, but rather are optically coupled via free space or are integrated in the same device. Advantageously, this compact arrangement reduces the excess loss associated with optical fiber coupling and lowers packaging costs.