SPEKTRALANALYTISCHES GASMESSGERAET.

摘要

A deuterium lamp (36) inclined at about 30 deg. to the vertical emits light through a condenser (19) in pulses at intervals of e.g. 3 seconds. Its beam (20) passes through an ultraviolet-transparent quartz glass plate (35) to a spectrally-neutral beam splitter (11). Part of the beam is reflected by a rotary mirror (12) to an objective reflector (13) sliding in a slot (46). An exit mirror (15) directs it through optical devices (48-51) to a retrorefelctor (40). The returned beam is diverted through a reference sample holder (43) which can be rotated into and out of the optical path to a photoreceiver (33).