The Domino Inequalities for the Symmetric Traveling Salesman Problem

Abstract

An optical viewing device having a stabilized mirror in the objective lens system, the arrangement being such that the conditions for stabilization of the image against vibration about an axis perpendicular to the line of sight of the device is 2 2s 1 1 - + = r fr m WHERE R IS A COUPLING RATIO; S IS THE DISTANCE ALONG THE OPTICAL AXIS BETWEEN THE MIRROR AND A PART OF THE OBJECTIVE LENS SYSTEM THAT LIES IN FRONT OF THE REFLECTING SURFACE; F IS THE FOCAL LENGTH OF THAT PART OF THE OBJECTIVE LENS SYSTEM THAT LIES IN FRONT OF THE REPLECTING SURFACE; AND M IS THE OVERALL MAGNIFICATION OF THE COMPLETE OPTICAL SYSTEM OF THE DEVICE.