Patent ID: 10365204

Abstract:
The invention relates to a long path cell (10), in particular a Herriott cell, with (a) a primary mirror (12) and (b) a secondary mirror (14). According to the invention, it is provided that the primary mirror (12) has a first primary mirror segment (42.1) and at least one second primary mirror segment (42.2), which radially surrounds the first primary mirror segment (42.1), whereby the primary mirror segments (42) differ in their curvatures (R42.1, 42.2) or focal lengths, the secondary mirror (14) has a first secondary mirror segment (44.1) and at least one second secondary mirror segment (44.2) which radially sur-rounds the first secondary mirror segment (44.1), whereby the secondary mirror segments (44) differ in their curvatures (R42.1, R42.2) or focal lengths, the first primary mirror segment (42.1) and the first secondary mirror segment (44.1) are arranged in relation to each other such that a light beam is reflected back and forth between the two, and that the second primary mirror segment (42.2) and the second secondary mirror segment (44.2) are arranged in relation to each other such that a light beam is reflected back and forth between the two.