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公开(公告)号：US10228555B2
公开(公告)日：2019-03-12
申请号：US15256909
申请日：2016-09-06
Applicant: STMicroelectronics Ltd
Inventor： Sason Sourani
IPC: B81B7/00 , G02B26/08 , G09G3/34 , H02P25/032
Abstract: The present disclosure provides a system and method for controlling operation of a resonance MEMS mirror. The system and method includes activating either an in-plane or staggered MEMS mirror via sets of activation pulses applied to the MEMS mirror, detecting current at the MEMS mirror, generating a window for detecting a change in a direction of the current at the MEMS mirror, and terminating the window and the activation pulse if a change in the current direction is detected during the window. In some embodiments, two sets of activation pulses are applied to the MEMS mirror.
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公开(公告)号：US20180288366A1
公开(公告)日：2018-10-04
申请号：US15471333
申请日：2017-03-28
Applicant: STMicroelectronics Ltd
Inventor： Gilad Adler , Sason Sourani
CPC classification number: H04N7/0127 , G02B26/0833 , G02B26/101 , G02B26/105 , G09G3/02 , G09G2310/0224 , H04N9/3129 , H04N9/3161 , H04N9/3164 , H04N9/3188
Abstract: Disclosed herein is an electronic device including a first laser source configured to project a first laser beam, and a second laser source configured to project a second laser beam in alignment with the first laser beam in a first direction but at an angle with respect to the first laser beam in a second direction. A mirror apparatus is positioned so as to reflect the first and second laser beams. Control circuitry is configured to control the mirror apparatus to simultaneously reflect the first and second laser beams in a first scan pattern to form an first image, the first image formed from the first scan pattern having a number of scan lines greater than two times a horizontal resonance frequency at which the mirror apparatus oscillates divided by a desired frame rate of the first image.
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公开(公告)号：US20170318271A1
公开(公告)日：2017-11-02
申请号：US15458192
申请日：2017-03-14
Applicant: STMicroelectronics Ltd
Inventor： Sason Sourani
CPC classification number: H04N9/3194 , G02B27/141 , H04N9/3129 , H04N9/3158 , H04N9/3161 , H04N9/3182 , H04N9/3185
Abstract: A color calibration device for a laser scanning apparatus includes a compensation unit configured to electronically compensate for positional errors of the three-color laser source. The compensation unit includes an emitted light detector configured to measure a power of an emitted light beam. A calibration unit coupled to the emitted light detector has a controller configured to generate a quantity correction value for the three-color laser source. A laser source control element is configured to generate a control quantity for the three-color laser source, based on the quantity correction value. A dominant color detector is configured to detect any dominant color in the light beam being projected and actuate the controller for the dominant color.
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4.发明申请公开(公告)号：US20170285327A1
公开(公告)日：2017-10-05
申请号：US15280691
申请日：2016-09-29
Applicant: STMicroelectronics Ltd
Inventor： Offir Duvdevany , Dadi Sharon , Sason Sourani
CPC classification number: G02B26/0833 , G02B7/1821 , G02B26/0841 , G02B26/105 , G03B21/008
Abstract: The method for controlling an angular position of a MEMS mirror, includes: applying a first driving moment to the MEMS mirror to generate a rotational scanning movement of the mirror; and, at a zooming instant, applying a second driving moment to the MEMS mirror, wherein the second driving moment is equal to the first driving moment plus an extra moment. The extra moment may be a DC offset. After a transient period of time from zooming instant, a third driving moment M2=k{dot over (θ)}2t is applied. The first and third driving moment are variable linearly with time. The driving moments are applied to torsional springs of the mirror.
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公开(公告)号：US10078032B2
公开(公告)日：2018-09-18
申请号：US15188455
申请日：2016-06-21
Applicant: STMicroelectronics LTD
Inventor： Sason Sourani
CPC classification number: G01M11/005 , B81B3/00 , B81B7/008 , B81B2201/042 , G02B26/0833 , G02B26/0841 , G08B21/185
Abstract: Disclosed herein is a circuit for determining failure of a movable MEMS mirror. The circuit includes an integrator receiving an opening angle signal representing an opening angle of the movable MEMS mirror, and a differentiator receiving the opening angle signal. A summing circuit is configured to sum the integrator output and the differentiator output. A comparison circuit is configured to determine whether the sum of the integrator output and differentiator output is not within a threshold window. An indicator circuit is configured to generate an indicator signal indicating that the movable MEMS mirror has failed based on the comparison circuit indicating that the sum of the integrator output and differentiator output is not within the threshold window.
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Patent Agency Ranking
公开(公告)号：US10778940B2
公开(公告)日：2020-09-15
申请号：US16266208
申请日：2019-02-04
Applicant: STMicroelectronics Ltd
Inventor： Gilad Adler , Sason Sourani
Abstract: A projector includes a first laser source projecting a first laser beam, a second laser source projecting a second laser beam at an angle with respect to the first laser beam, and a mirror reflecting the first and second laser beams. Circuitry controls the mirror to simultaneously reflect the first and second laser beams in a first scan pattern to form a first image having a number of scan lines greater than two times a horizontal resonance frequency of the mirror divided by a desired frame rate of the first image. The first laser beam forms a first angle of incidence with the mirror and the second laser beam forms a second angle of incidence with the mirror, the second angle of incidence being equal to the first angle of incidence summed with the angle of the second laser beam with respect to the first laser beam.
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公开(公告)号：US10237515B2
公开(公告)日：2019-03-19
申请号：US15471333
申请日：2017-03-28
Applicant: STMicroelectronics Ltd
Inventor： Gilad Adler , Sason Sourani
Abstract: Disclosed herein is an electronic device including a first laser source configured to project a first laser beam, and a second laser source configured to project a second laser beam in alignment with the first laser beam in a first direction but at an angle with respect to the first laser beam in a second direction. A mirror apparatus is positioned so as to reflect the first and second laser beams. Control circuitry is configured to control the mirror apparatus to simultaneously reflect the first and second laser beams in a first scan pattern to form an first image, the first image formed from the first scan pattern having a number of scan lines greater than two times a horizontal resonance frequency at which the mirror apparatus oscillates divided by a desired frame rate of the first image.
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公开(公告)号：US09942531B2
公开(公告)日：2018-04-10
申请号：US15458192
申请日：2017-03-14
Applicant: STMicroelectronics Ltd
Inventor： Sason Sourani
CPC classification number: H04N9/3194 , G02B27/141 , H04N9/3129 , H04N9/3158 , H04N9/3161 , H04N9/3182 , H04N9/3185
Abstract: A color calibration device for a laser scanning apparatus includes a compensation unit configured to electronically compensate for positional errors of the three-color laser source. The compensation unit includes an emitted light detector configured to measure a power of an emitted light beam. A calibration unit coupled to the emitted light detector has a controller configured to generate a quantity correction value for the three-color laser source. A laser source control element is configured to generate a control quantity for the three-color laser source, based on the quantity correction value. A dominant color detector is configured to detect any dominant color in the light beam being projected and actuate the controller for the dominant color.
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公开(公告)号：US20180067303A1
公开(公告)日：2018-03-08
申请号：US15256909
申请日：2016-09-06
Applicant: STMicroelectronics Ltd
Inventor： Sason Sourani
IPC: G02B26/08
CPC classification number: G02B26/0841 , B81B2201/042 , B81B2203/0136 , G09G3/346 , H02P25/032
Abstract: The present disclosure provides a system and method for controlling operation of a resonance MEMS mirror. The system and method includes activating either an in-plane or staggered MEMS mirror via sets of activation pulses applied to the MEMS mirror, detecting current at the MEMS mirror, generating a window for detecting a change in a direction of the current at the MEMS mirror, and terminating the window and the activation pulse if a change in the current direction is detected during the window. In some embodiments, two sets of activation pulses are applied to the MEMS mirror.
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公开(公告)号：US20170363506A1
公开(公告)日：2017-12-21
申请号：US15188455
申请日：2016-06-21
Applicant: STMicroelectronics LTD
Inventor： Sason Sourani
CPC classification number: G01M11/005 , B81B3/00 , B81B7/008 , B81B2201/042 , G02B26/0833 , G02B26/0841 , G08B21/185
Abstract: Disclosed herein is a circuit for determining failure of a movable MEMS mirror. The circuit includes an integrator receiving an opening angle signal representing an opening angle of the movable MEMS mirror, and a differentiator receiving the opening angle signal. A summing circuit is configured to sum the integrator output and the differentiator output. A comparison circuit is configured to determine whether the sum of the integrator output and differentiator output is not within a threshold window. An indicator circuit is configured to generate an indicator signal indicating that the movable MEMS mirror has failed based on the comparison circuit indicating that the sum of the integrator output and differentiator output is not within the threshold window.
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