(under subclass 227.11) Subject matter wherein the light waves transmitted by the light conductor are coherent, i.e.,
the phases of the waves are substantially in step spatially and temporarily, and the condition being sensed by the light conductor affects the coherent light to present an interferometric pattern to the photocell.
(1) Note. This definition is inclusive and includes arrangements where noninterferometric light is presented to a photocell along with presentation of an interferometric pattern to a photocell.
(2) Note. This type of device ordinarily includes use of light conductors which transmit light with a spatial energy distribution which is characterized as a single transverse electromagnetic mode (TEM) distribution. Included are not only single interferometric devices, but optically coupled (by light conductors) multiple interferometric devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
550, interference pattern analysis for related subject matter which may or may not involve light conductors but which does not claim significant light conductor means.
SEE OR SEARCH CLASS
356, Optics: Measuring and Testing, 345+, for measuring and testing by light interference involving, inter alia, coherent interferometric light.
365, Static Information Storage and Retrieval,
215+, for optical, including holos:graphic, read/write circuits which may include light conductors handling interferometric light.
