Abstract:
The present invention relates to an optical apparatus (202) comprising a sample support (219) and imaging means (2119) arranged, when said optical apparatus (202) is in use, to receive a first beam (2115) emanating from the sample support (219) under a first angle (2127) with respect to a reference axis (2131)wherein the optical apparatus (202) further comprises a reflector (217) and in that the imaging means (2119) are arranged to receive at least a second beam (2113, 211) emanating from the sample support (219) under a second angle (2129) with respect to the reference axis (2131),the second angle (2129) being different from the first angle (2127), the second beam (2113, 211) when passing from the sample support (219) to the imaging means (2119) being reflected by the reflector (217).