Test object used for projecting a set of marks to infinity

Abstract

The collimated test object according to the invention is used for projecting to infinity a set of marks, the positions of which are very accurately known so as to be able to verify the alignment et/or the distortion of optical equipment such as sensors or collimated screens. This test object comprises a plurality of microcollimated sets each comprising a light source, an elementary test object comprising a mark illuminated by said source as well as a collimation lens for projecting said mark to infinity. With this solution, one gets free of aberration problems to which are subject convention test objects of large dimensions.

Dependencies are inferred from the claim text.