HOLDER FOR A HOLOGRAPHIC GRATING

摘要

An adjustable holder (1) for a concave holographic grating (2)for enabling the correct positioning of the grating vis-a-vis a light entrance port (15) and a light exit port (20), characterized in, that it comprises a grating hinge (10) fixed to said grating, said grating hinge (10) enabling rotational adjustment of the grating position with respect to said holder (1), the centre point of the rotational adjustment being located at the vertex of said grating (2).