Optical device and measuring method

Details Optical device and measuring method Optical device and measuring method

2011-08-16

2011-08-16

Bennett, G. Bradley (Department: 2841)

Geometrical instruments

Straight-line light ray type

Level

Reexamination Certificate

active

07996998

ABSTRACT:
An optical device capable of measuring a condition such as deflection of a cylindrical body such as utility pole or cylindrical column precisely and rapidly is provided. The optical device has a telescope with a projection plate. The projection plate has a reference scale made of a plurality of full or substantially full circles arranged concentrically about a central axis of the telescope or a plurality of circular arcs arranged symmetrically about the central axis.

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Notification of Transmittal of Translation of the International Preliminary Report on Patentability (Forms PCT/IB/338 and PCT/IB/373) and the Written Opinion of the International Searching Authority (Form PCT/ISA/237) issued in the corresponding International Application No. PCT/JP2008/067942 dated May 14, 2010.
International Search Report of Application No. PCT/JP2008/067942 dated Dec. 16, 2008.
Non-English language version of the Written Opinion of the International Searching Authority of Application No. PCT/JP2008/067942 dated Dec. 16, 2008.

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