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公开(公告)号：US10608531B2
公开(公告)日：2020-03-31
申请号：US16123547
申请日：2018-09-06
Applicant: AgieMinds Micro Optics Co., Ltd.
Inventor： Chih-Yi Yang , Jui-Huang Cheng
Abstract: A precision control device generally includes a current-limiting resistance, a voltage control unit, and a feedback voltage regulation unit. The current-limiting resistance has a grounded end and is serially connected to a DC load. The voltage control unit includes a microprocessor, an ADC, and a DAC. The feedback voltage regulation unit includes at least one operational amplifier and a transistor having a control input, a collector, and an emitter. The transistor is configured to operate at an unsaturated region, wherein the control input thereof receives a signal sent from an output terminal of the operational amplifier. The precision control device enables a power supply to smoothly adjust a predetermined output voltage set value for the DC load in response to a deviation of a voltage applied to the DC load. As such, the current flowing through the DC load and the current-limiting resistance can be regulated at a stable level.
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2.发明申请公开(公告)号：US20190081563A1
公开(公告)日：2019-03-14
申请号：US16123547
申请日：2018-09-06
Applicant: AgieMinds Micro Optics Co., Ltd.
Inventor： Chih-Yi Yang , Jui-Huang Cheng
Abstract: A precision control device generally comprises a current-limiting resistance, a voltage control unit, and a feedback voltage regulation unit. The current-limiting resistance has a grounded end and is serially connected to a DC load. The voltage control unit includes a microprocessor and a DAC. The feedback voltage regulation unit includes at least one operational amplifier and a transistor having a control input, a collector, and an emitter. The transistor is configured to operate at an unsaturated region, wherein the control input thereof receives a signal sent from an output terminal of the operational amplifier. The precision control device enables a power supply to smoothly adjust a predetermined output voltage set value for the DC load in response to a deviation of a voltage applied to the DC load. As such, the current flowing through the DC load and the current-limiting resistance can be regulated at a stable level.
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公开(公告)号：US10295887B2
公开(公告)日：2019-05-21
申请号：US15878093
申请日：2018-01-23
Applicant: AgieMinds Micro Optics Co., Ltd.
Inventor： Chih-Yi Yang
Abstract: A low-glare fluorescent-powder LED light device includes a shell, a multi-frequency directional light source, a high-frequency directional light source, and an electrical control circuit. The shell has a surrounding wall, which defines a front opening and a rear opening and has an inner surface extending along a central axis. The multi-frequency directional light source, including at least one fluorescent-powder LED, is disposed at the inner surface of the shell. The high-frequency directional light source, including a plurality of high-frequency LEDs, is disposed at the inner surface of the shell such that the high-frequency LEDs are arranged in radial symmetry about the central axis. The electrical control circuit can drive the multi-frequency directional light source and/or the high-frequency directional light source. The central light beams emitting from the high-frequency LEDs do not reach the fluorescent-powder LED, so that the fluorescence interference of the fluorescent-powder LED can be avoided.
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公开(公告)号：US20180210319A1
公开(公告)日：2018-07-26
申请号：US15878093
申请日：2018-01-23
Applicant: AgieMinds Micro Optics Co., Ltd.
Inventor： Chih-Yi Yang
IPC: G03B15/02
CPC classification number: G03B15/02 , G03B2215/0539 , G03B2215/056 , G03B2215/0567 , G03B2215/0571 , G03B2215/0575 , H01L33/502
Abstract: A low-glare fluorescent-powder LED light device includes a shell, a multi-frequency directional light source, a high-frequency directional light source, and an electrical control circuit. The shell has a surrounding wall, which defines a front opening and a rear opening and has an inner surface extending along a central axis. The multi-frequency directional light source, including at least one fluorescent-powder LED, is disposed at the inner surface of the shell. The high-frequency directional light source, including a plurality of high-frequency LEDs, is disposed at the inner surface of the shell such that the high-frequency LEDs are arranged in radial symmetry about the central axis. The electrical control circuit can drive the multi-frequency directional light source and/or the high-frequency directional light source. The central light beams emitting from the high-frequency LEDs do not reach the fluorescent-powder LED, so that the fluorescence interference of the fluorescent-powder LED can be avoided.
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