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    • 3. 发明申请
    • FACETED MIRROR APPARATUS
    • 镜面装置
    • US20070206301A1
    • 2007-09-06
    • US11695626
    • 2007-04-03
    • Andreas SeifertMarkus WeissAndreas HeislerStefan Dornheim
    • Andreas SeifertMarkus WeissAndreas HeislerStefan Dornheim
    • G02B5/08
    • B82Y10/00G02B7/1824G03F7/70166G03F7/702G03F7/70825
    • In a method for the production of a facetted mirror 24 having a plurality of mirror facets 12 and 12′, which have mirror surfaces 15 and are fitted into reception bores 22, 22′ of a support plate 16, the mirror facets 12, 12′ are made in a first method step. At least one of the mirror facets is fitted into the associated reception bore of the support plate in a second method step, after which the ACTUAL position of the optical axis of at least one mirror surface of an associated mirror facet 12, 12′ fitted into the support plate is respectively determined in a third step and compared with a SET position of a predetermined optical axis. Knowing the measured values determined for the at least one mirror facet 12, 12′ in the third method step, reprocessing of the mirror facet and/or of the reception bore is subsequently carried out in a further method step if there is an angular deviation between the ACTUAL position and the SET position.
    • 在制造具有多个镜面12和12'的分面镜24的方法中,其具有镜面15并被装配到支撑板16的接收孔22,22'中,镜面12,12' 在第一方法步骤中制成。 在第二方法步骤中,至少一个镜面被安装到支撑板的相关联的接收孔中,之后将相关镜面12,12'的至少一个镜面的光轴的ACTUAL位置嵌入 分别在第三步骤中确定支撑板并与预定光轴的SET位置进行比较。 了解在第三方法步骤中对于至少一个镜面12,12'确定的测量值,随后在另外的方法步骤中进行镜面和/或接收孔的再处理,如果在第二方法步骤之间存在角度偏差 ACTUAL位置和SET位置。
    • 4. 发明申请
    • Gas detection method and gas detection device
    • 气体检测方法和气体检测装置
    • US20070030487A1
    • 2007-02-08
    • US11227477
    • 2005-09-15
    • Bert WillingMarkus KohliAndreas Seifert
    • Bert WillingMarkus KohliAndreas Seifert
    • G01N21/00
    • G01N21/39G01J3/433G01N21/3504G01N2201/0691
    • The gas detector device comprises at least a VCSEL source and at least a light sensor for detecting a light beam having passed through a sample chamber containing a given gas to be detected. The detection signal of the sensor directly provided to or is time derivated by an electronic derivator and then provided to respective lock-in amplifiers in order to generate a two different 2f-detection, f being the frequency of a wavelength modulation of the source, and thus to provide two corresponding measuring signals the division of which gives a precise value of the gas concentration. The invention uses at least a first modulation reference signal at twice and a second modulation reference signal at twice of the modulation frequency of the laser source. Providing at least a first 2f modulation reference signal has advantages over the prior art, because by using such a reference modulation signal it is possible measure the absolute intensity and therefore to receive the same result at different temperatures or at mode hopping of the laser. A further advantage is that the measurement accuracy is independent from the gas concentration.
    • 气体检测器装置至少包括VCSEL源和至少一个光传感器,用于检测通过含有待检测的给定气体的样品室的光束。 传感器的检测信号直接提供给电子推导器或由时间导出,然后提供给相应的锁定放大器,以产生两个不同的2f检测,f是源的波长调制频率,以及 从而提供两个对应的测量信号,其分配给出了气体浓度的精确值。 本发明在激光源的调制频率的两倍的两倍和第二调制参考信号下至少使用第一调制参考信号。 提供至少第一2f调制参考信号具有优于现有技术的优点,因为通过使用这样的参考调制信号,可以测量绝对强度并因此在激光器的不同温度或模式跳变时接收相同的结果。 另外的优点是测量精度与气体浓度无关。
    • 8. 发明申请
    • METHOD AND GAS SENSOR FOR PERFORMING QUARTZ-ENHANCED PHOTOACOUSTIC SPECTROSCOPY
    • 方法和气体传感器,用于执行增强型光电倍增管
    • US20090027677A1
    • 2009-01-29
    • US11970570
    • 2008-01-08
    • Bert WILLINGMarkus KOHLIAndreas SEIFERT
    • Bert WILLINGMarkus KOHLIAndreas SEIFERT
    • G01N21/00
    • G01N21/1702G01N21/274
    • A method for performing quartz-enhanced photoacoustic spectroscopy of a gas, includes providing a light source configured to introduce a laser beam having at least one wavelength into the gas such said at least one molecule within in the gas is stimulated generating an acoustic signal, accumulating the acoustic signal in a resonant acoustic detector, generating a resonant absorption signal (SA) relative to the gas concentration by at least one tuning fork serving as resonant acoustic detector, generating additionally a resonant intensity signal (SI) proportional to the intensity of the laser beam travelling through the gas, and providing an output signal (SGC) from said absorption signal (SA) and said intensity signal (SI) being independent of the intensity of the light relative to the presence or concentration of the gas.
    • 一种用于执行气体的石英增强光声光谱的方法,包括提供被配置为将具有至少一个波长的激光束引入到气体中的光源,所述气体中的所述至少一个分子被激发以产生声信号, 谐振声检测器中的声信号,通过用作谐振声检测器的至少一个音叉产生相对于气体浓度的谐振吸收信号(SA),产生与激光强度成比例的谐振强度信号(SI) 并且提供来自所述吸收信号(SA)的输出信号(SGC)和所述强度信号(SI)的光束相对于气体的存在或浓度独立于光的强度。