Abstract: The proliferation of electronic and wireless systems has elevated electromagnetic interference (EMI) to a critical challenge in modern photoelectric applications. High-performance EMI shielding solutions for optical windows in aircraft, spacecraft, and electronic displays demand simultaneous achievement of superior shielding effectiveness (SE) and optical transparency. This study presents two innovative transparent shielding film configurations: a double-layer nested ring metamaterial and a bio-inspired honeycomb grid architecture. By optimizing the unit cell period and wire filling ratio, it can realize high SE and balance high optical transmittance. Full-wave simulation shows that the light transmittance of single-layer nested ring metal mesh can reach over 88%, and SE is greater than 28.8 dB before 40 GHz. The SE of the double-layer nested ring metal mesh exceeds 45.7 dB before 40 GHz. The second approach is transparent electromagnetic shielding film based on double-layer honeycomb grid structure. The measured SE of the film at 18 GHz is 46 dB, and the experimental results are in good agreement with simulation. The performance of these two schemes is better than most of the existing lithographically fabricated wire-patterned structures, and they have great potential in the photoelectric application of practical aircraft.