G - Physics – 02 – B
Patent
G - Physics
02
B
324/59, 324/80
G02B 6/42 (2006.01) G01R 15/24 (2006.01) G01R 19/00 (2006.01) G02B 3/04 (2006.01) G02B 6/26 (2006.01) G02B 6/32 (2006.01) G02B 6/34 (2006.01) G02F 1/09 (2006.01)
Patent
CA 1301842
ABSTRACT OF THE DISCLOSURE A magneto-optical current measuring device includes a collimating lens arrangement for focusing a light signal into a parallel beam of light, which beam of light, when polarized is communicated through a Faraday rotator which is disposed in surrounding proximity to the transmission line in which it is desired to measure the current flow. The collimating lens element is formed of a segment of a parabolic lens and a spacer lens element which has a flat surface formed by an edge opposite the parabolic surface, this flat surface extending to the focal length of the parabolic surface. The collimating lens element is constructed in the manner of a monolithic configuration and is then secured together with the polarizing element to the Faraday rotator in a manner so as to eliminate all air-to-glass interfaces.
615895
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Westinghouse Electric Corporation
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