Patent ID: 11971486
Assignee: NANJING UNIVERSITY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. The three-dimensional imaging method based on the superconducting nanowire photon detection array according to claim 2, wherein further comprising a step of a gray-scale image by the pixels comprises: setting a position in the SNSPD for generating photon responses as xa, a time point for absorbing photons as ta, a transmission speed of electrical pulse signals generated by the picture element along the SNSPD as v, connecting a superconducting delay line with a detector of each pixel, and reading time by a computer as τ and τ′ after the superconducting delay line through a peripheral circuit and a register, wherein each row of the superconducting delay lines have an equivalent length of L, thus τ=ta+(L−xa)/v and τ′=ta+xa/v, and after photons are absorbed, xa=((τ−τ′)v+L)/2 and ta=((τ±τ′)−L/v)/2; and setting n pixels in each row simultaneously generating the photon responses, wherein the reading time is τ1, τ2, . . . , τn, and calculating to obtain positions of the photon responses.