The research found the alternative optical properties of the firefly eye from its crystalline cone. The eye of the firefly has the periodic indices of refraction and configuration of 190 parabolic layers as a one-dimensional photonic crystal on the optical axis treated ommatidium of the firefly. The paper performed anatomy of the firefly eye to reveal the structural compound eye of the firefly and simulated a dioptric portion of the firefly eye. The results realized the behavior of the visual output according to the optical raytracing by using geometric optics. The research applied the transfer matrix to observe the transmission efficiency and found that there exists the filtering capability on the optical axis. Based on the incident of collimating light, the efficiency of the superposition eye is higher than that of the apposition eye, by more than 900 times.
The research was published in Proc. SPIE 11277, Organic Photonic Materials and Devices XXII, 1127714 (28 February 2020)