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Abstract

An optical apparatus (10) is described, having at least one objective element (20) which has two or more objective lens elements (21, 24, 27), wherein one of the objective lens elements (21) is designed as a support lens element for a diffractive optical element (15), the support lens element having a diffractive optical element (15). In order to create an optical apparatus (10), with which a particularly good correction of the chromatic magnification difference can be achieved, it is provided that the optical apparatus (10) is designed as a Galileo system or as a Kepler system, that the optical apparatus (10) has an ocular element (30) with at least one ocular lens element (31), that the diffractive optical element (15) is disposed in the optical apparatus (10) or designed in such a way that the light rays impinge on it at an angle of less than 20 degrees and that the diffractive optical element (15) has a minimum groove width h of more than 50 .mu.m, in particular, of more than 100 .mu.m.

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First Claim