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公开(公告)号：US20200036157A1
公开(公告)日：2020-01-30
申请号：US16525147
申请日：2019-07-29
发明人： Robert Wolf , Soren Sofke , Philipp Gerlach , Susanne Weidenfeld , Rico Srowik
IPC分类号： H01S5/026 , H01S5/068 , H01S5/0683 , H01S5/183 , G01N15/02
摘要： The present invention provides methods and an apparatus for monitoring the optical output power of a laser diode (LD) having an associated photodiode (PD), and a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). Monitoring of the optical output power P is effected during the operation of the laser diode (LD) and is based on current measurements and/or voltage measurements at the laser diode (LD) and at the photodiode (PD).
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公开(公告)号：US20230327622A1
公开(公告)日：2023-10-12
申请号：US18297584
申请日：2023-04-07
申请人： Robert Bosch GmbH
发明人： Robert Wolf , Rico Srowik
CPC分类号： H03F3/45475 , H03F1/26
摘要： A two-stage transimpedance amplifier device having a transimpedance amplifier and a post-connected voltage differential amplifier. One of the two amplifiers receives a signal from the respective other amplifier as a reference signal. In this way, a noise compensation is able to be achieved.
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公开(公告)号：US11656166B2
公开(公告)日：2023-05-23
申请号：US16689399
申请日：2019-11-20
发明人： Robert Wolf , Alexander Van Der Lee , Rico Srowik , Hans Spruit , Okke Ouweltjes
IPC分类号： G01N15/10
CPC分类号： G01N15/1012
摘要： The invention relates to a method for detecting particles, having the steps of: receiving (S1) a measurement signal; calculating (S2) at least one estimated noise value using the received measurement signal; and detecting (S3) the particles using the measurement signal on the basis of at least one detection criterion, wherein the at least one detection criterion depends on the at least one calculated estimated noise value.
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公开(公告)号：US11646545B2
公开(公告)日：2023-05-09
申请号：US16525147
申请日：2019-07-29
发明人： Robert Wolf , Soren Sofke , Philipp Gerlach , Susanne Weidenfeld , Rico Srowik
IPC分类号： H01S5/068 , H01S5/026 , G01N15/02 , H01S5/183 , H01S5/0683
CPC分类号： H01S5/0264 , G01N15/0211 , H01S5/0683 , H01S5/06808 , H01S5/183
摘要： The present invention provides methods and an apparatus for monitoring the optical output power of a laser diode (LD) having an associated photodiode (PD), and a particle sensor apparatus. The photodiode (PD) is operable together with the laser diode (LD), wherein it detects the light (LS) of the laser diode (LD) and converts it into an electrical current, and is thermally coupled to the laser diode (LD). Monitoring of the optical output power P is effected during the operation of the laser diode (LD) and is based on current measurements and/or voltage measurements at the laser diode (LD) and at the photodiode (PD).
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公开(公告)号：US20200173904A1
公开(公告)日：2020-06-04
申请号：US16689399
申请日：2019-11-20
发明人： Robert Wolf , Alexander Van Der Lee , Rico Srowik , Hans Spruit , Okke Ouweltjes
IPC分类号： G01N15/10
摘要： The invention relates to a method for detecting particles, having the steps of: receiving (S1) a measurement signal; calculating (S2) at least one estimated noise value using the received measurement signal; and detecting (S3) the particles using the measurement signal on the basis of at least one detection criterion, wherein the at least one detection criterion depends on the at least one calculated estimated noise value.
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