DEVICE FOR INCREASING PROJECTION RANGE OF STRUCTURED ILLUMINATION FOR 3D SCANNING Russian patent published in 2020 - IPC G01B11/24 

FIELD: optoelectronic instrument making.

SUBSTANCE: invention relates to the field of optoelectronic instrument making, in particular to methods for increasing the range of optical-electronic projection systems for creating structured illumination. Disclosed device for increasing range of projection of structured illumination for 3D scanning includes a projected pattern of structured illumination, optical elements forming an image during formation of the projected template. Optical radiation source is fixed before series-mounted image forming optical system, transparency with virtual image of template, autofocus unit, receiving optical system, a photodetector for capturing a template image on the monitored object and comparing the allowable working interval with the reference interval and transmitting the signal to the input of the computing unit. One of the outputs of the computing unit is connected to the input of the output device, and the other output, in parallel, is connected to the transparency pulses and the autofocus unit for synchronizing parameters of the transmitting optical system, the scale of the image of the template depending on the varying distance to the object.

EFFECT: wider range of optical-electronic projection systems for creating structured illumination.

1 cl, 2 dwg