Bearing Alignment Auto Collimator
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
A conventional auto collimator has no provision for selective illumination of the surface to be aligned. In the case where the object to be aligned has several reflecting surfaces, it may not be possible to distinguish between them. The modified auto collimator shown in the drawing has an additional lens and aperture to provide selective illumination of the surface to be tested. A light source is brought to a focus in the plane of aperture A1 by means of lens L1. Lenses L2 and L3 create an image of aperture A1 on the surface of the bearing which is to be aligned. Aperture A2 determines the width of the collimated beam and therefore the amount of light which reaches the bearing surface.