Stabilized sensor device
AssigneeEnvironmental Research Institute of Michigan
InventorCatharine G. Neumann
Life of this patent
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Abstract
An optical sensor includes a vortex diffuser bearing for support of the optical elements thereof in a fixed, spaced apart and angular relationship relative to a subjacent surface. The sensors are readily adapted to be fabricated into matrices adapted for high volume scanning of surfaces, as for example to detect irregularities in the coatings thereof. The sensors are also adaptable for use in photogrammetry, microdensitometry, or other applications wherein precise, stable and repeatable positioning is required.
Claims18
An optical sensor adapted to be stabilized in a fixed, spaced apart and angular relationship relative to a subjacent surface, said sensor including:
- at least one optical element;
- a bearing member adapted to retainably support the optical element, said bearing member having a cavity defined therein, said cavity including a side wall and being open at the bottom, which is disposed proximate the subjacent surface;
- and
- means adapted to introduce a fluid stream into the cavity such that the fluid follows a helical path of travel therethrough and exits through the bottom thereof, so that a high pressure region is created proximate the wall of the cavity and a low pressure region is created proximate the center of the cavity, whereby said high and low pressure regions cooperate to maintain said bearing member and optical element in a fixed, spaced apart and angular relationship with said subjacent surface.
Dependencies are inferred from the claim text.