Patent ID: 11942754
Assignee: GOER OPTICAL TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A driving current correction method for multiple laser devices, comprising:
in a projection period of a n-th pixel point
sequentially driving a plurality of laser devices of a laser source to emit laser, and respectively detecting light intensity information of lasers emitted from the plurality of laser devices by using a light sensor;
acquiring an actual light intensity of the lasers emitted from the plurality of laser devices according to an electric signal output by the light sensor, and establishing a corresponding relation between a driving current and an actual light intensity of each laser device according to the driving current of the each laser device and the actual light intensity of the laser emitted from the each laser device when the n-th pixel point is projected;
from a projection of a (n+1)-th pixel point, wherein the (n+1)-th pixel point is a pixel point next to the n-th pixel point in a scanning direction:
correcting the driving current of the each laser device according to a set light intensity of the each laser device and the corresponding relation between the driving current and the actual light intensity of the each laser device, wherein the corresponding relation between the driving current and the actual light intensity of the each laser is a linear relationship.