A multi-chip addressable tof emission module and laser

Abstract

The embodiment of the invention discloses a multi-chip addressable TOF emitting module and a laser. The multi-chip addressable TOF emission module includes a substrate and a control drive chip arranged on one side of the substrate, at least two laser generator chips and circuit switches corresponding to the laser generator chips one by one, the circuit switch and the control drive The chip is electrically connected, the circuit switch is used to turn on or off according to the control signal output by the control drive chip, the laser generator chip is electrically connected to the circuit switch, and the laser generator chip is used to communicate with the conductive The laser generator chip connected to the circuit switch emits laser light. The technical scheme of the present invention controls at least two laser generator chips to emit light sequentially according to actual needs by controlling the drive chip, while ensuring the brightness of the FOI area, it reduces the duty cycle of the laser generator chip, reduces heat accumulation, and improves work efficiency. Efficiency, reducing the difficulty of heat dissipation.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of laser emission, and in particular to a multi-chip addressable TOF emission module and a laser. Background technique [0002] The working principle of TOF (Time of Flight, Time of Flight) is to transmit a signal light pulse to the target, receive the reflected light signal, compare the time difference between the transmitted signal and the received signal, and obtain the depth information of the target. TOF usually uses a laser such as an edge-emitting laser (EEL) or a laser generator chip (VCSLE) as a signal source. Due to the divergence of the optical signal during propagation, the illuminance of the optical signal attenuates with the increase of the distance, and the signal-to-noise ratio of the reflected optical signal is also weakened. Therefore, the detection distance of TOF is restricted by the intensity of the optical signal. Collimating the outgoing light into a spot with a ...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a multi-chip addressable TOF transmitting module and laser to solve the problem that the TOF module requires high signal power when the detection distance of the existing flood lighting is long, which affects the heat dissipation and reliability of the laser. sexually demanding questions

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