SHUTDOWN CIRCUITRY FOR A LASER EMITTER

A shutdown circuit may include a filter, for receiving a laser trigger signal for a laser emitter, that is configured to output a filtered signal. The shutdown circuit may include a logic gate configured to receive the filtered signal and at least one of a first signal based on a signal from a photo...

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Bibliographic Details
Main Authors ZHU, Lijun, HUANG, Hao, DOLGANOV, Mikhail
Format Patent
LanguageEnglish
Published 16.02.2023
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Summary:A shutdown circuit may include a filter, for receiving a laser trigger signal for a laser emitter, that is configured to output a filtered signal. The shutdown circuit may include a logic gate configured to receive the filtered signal and at least one of a first signal based on a signal from a photodiode or a second signal based on a signal from a conductive path. The shutdown circuit may include a flip-flop configured to receive an output of the logic gate and to output an enablement signal that is based on the output of the logic gate, and a driver circuit for a switch configured to control current flow to the laser emitter. The driver circuit may be configured to receive the enablement signal and the laser trigger signal and to output the laser trigger signal based on whether the enablement signal is a first or a second voltage.
Bibliography:Application Number: US202117449164