Optical instrument
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United States of America Patent
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-
Jul 26, 1988
Grant Date -
N/A
app pub date -
Oct 28, 1986
filing date -
Nov 8, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an IR-FR- spectrometer, a light beam (10) is guided from a source to a detector (31) and is passed, in a first mode of operation, by means of first optical means (12, 19, 20) through a sample to be measured (28) and, in a second mode of operation, by second optical means (12, 22, 21) through a reference sample (32). The first and second optical means comprise a common mirror element (12) having at least first and second mirror surfaces (13, 14, 15, 16) which are inclined relative to each other. The mirror surfaces abut in at least one point. There is provided means for moving the mirror element (12) relative to the light beam so that during such relative movement the impinging point of the light beam (10) is displace from the first mirror surface (13), over onto the second mirror surface (14).
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