Abstract: A device for accounting for environmental capacitances caused by an external object when detecting the presence and surface location of an electrically conductive coating on a transparent and/or translucent medium includes: a capacitive sensor that provides multiple capacitances; electronics that are responsive to the capacitances; an excitation source that generates a train of pulses, voltage or current to determine capacitances at the capacitive sensor; a selective indicator; and, a capacitive sensing plate that affects, or is affected by, the pulses, voltage or current from the excitation source.

Abstract: Described are methods and devices for detecting the presence and surface location of an electrically conductive coating on a transparent and/or translucent medium.

Abstract: Methods and apparatuses for measuring the thickness on at least one transparent or translucent medium and detecting the presence and/or location of any conductive coating on a non-conductive medium surface are described.

Abstract: Methods and apparatuses for measuring the thickness on at least one transparent or translucent medium and detecting the presence and/or location of any conductive coating on a non-conductive medium surface are described.

Abstract: An apparatus for detecting a fluorescing substance on a test material includes a light source configured to direct light energy toward the test material, and one or more display features configured to display fluorescing light from the test material. When light from the light source contacts the fluorescing material, display features allows the fluorescing material to project a fluorescing glow into an ambient environment near the apparatus.

Abstract: Methods and apparatuses for detecting the presence and/or location of any conductive coating on a non-conductive medium surface are described.

Abstract: A system for detecting coatings on a transparent or semi-transparent medium includes a conductive sensor and a light reflection sensor which are configured to determine a presence and the conductivity of the coating on the medium.

Abstract: A detection system for measuring glass that has been placed under strain and the resulting stress lines in the glass has a light source of individual elements configured to create a light distribution. The light distribution has a discontinuity which enhances the viewing of a photoelastic effect in the glass. The light source creates a viewable optical interference (i.e., color changes) which results from stress lines in the glass.

Abstract: A system provides a correlation between a field-tested measured light transmission, light reflection and/or light absorption in at least one transparent, translucent or semi-opaque medium to a pre-set measured light transmission.

Abstract: A system of measuring light transmission and/or reflection has a light transmitter(s) and at least one light sensor which are used to generate a defined light environment over a specified light frequency range.

Abstract: A system of measuring light transmission and/or reflection has a light transmitter(s) and at least one light sensor which are used to generate a defined light environment over a specified light frequency range.