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US 4,407,583 AGranted
Ring laser gyroscopes
AssigneeBritish Aerospace Public Limited Company
InventorGraham J. Simms
Life of this patent
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AssigneeBritish Aerospace Public Limited Company
InventorGraham J. Simms
Estimating the term…
A ring laser gyroscope having a plurality of sensitive axes (X, Y, Z) and hence a plurality of cavities (7X, 7Y, 7Z), the cavities lying in mutually orthogonal planes at right angles to the respective sensitive axes and each cavity having three or more corners arranged so that at least one corner coincides with a corner of another cavity, whereby the cavities are interconnected, the gyroscope further comprising a plurality of mirrors (17,18) disposed respectively at the coinciding corners and the remaining corners of the cavities (7X, 7Y, 7Z), whereby the number of mirrors is less than the total number of cavity corners, the mirrors at the coinciding cavity corners and the coinciding cavities being oriented such that the normal to each of these mirrors lies in the plane of each cavity it serves and bisects the associated corners of those cavities.
A ring laser gyroscope having a plurality of sensitive axes and hence a plurality of cavities, the cavities lying in mutually orthogonal planes at right angles to the respective sensitive axes and each cavity having three or more corners arranged so that at least one corner coincides with a corner of another cavity, whereby the cavities are interconnected, the gyroscope further comprising a plurality of mirrors disposed respectively at the coinciding corners and the remaining corners of the cavities, whereby the number of mirrors is less than the total number of cavity corners, the mirrors at the coinciding cavity corners and the coinciding cavities being oriented such that the normal to each of these mirrors lies in the plane of each cavity it serves and bisects the associated corners of those cavities.
A three-axis ring laser gyroscope comprising three four-corner cavities arranged in mutually orthogonal planes at right angles to the respective sensitive axes and with each corner of one cavity coinciding with one corner of another cavity, whereby the cavities are interconnected, and six mirrors disposed respectively at the coinciding cavity corners, whereby the number of mirrors is less than the total number of cavity corners, the mirrors at the coinciding cavity corners and the coinciding cavities being oriented such that the normal to each of these mirrors lies in the plane of each cavity it serves and bisects the associated corners of those cavities.
Dependencies are inferred from the claim text.