Research On The Imaging Mechanism Of Bionic Lobster Eyes Optics

Lobster eye grazing incidence focusing device simulate the unique structure of spherical microchannel, that makes the lobster eye focusing device can obtain unprecedented wide field and energy acquisition ability in High-energy radiation field.. At present, the research on the lobster eye structure focus on X-ray field, but the lobster eye optical system has potential broad prospects in solving the restricted spectrum materical problem and wide field high sensitivity detection problem in light wave band.The main work of this paper is expanding the application of lobster eye focusing device to light wave band, the lobster eye focusing device is investigated and analyzed in the aspects of optical imaging. This paper focuses on the relationship between the structure parameters of the lobster eye optical system and its focusing performance, and proposes the formula for wall thickness based on the principle of single reflection which follow the principles of stray light inhibition and discusses each critical design parameter under the restricted formula condition, such as the cone apex angle, central angle, and use the mathematical model and machine modeling software to make the comparison simulation and modeling analysis. Through this analysis of modelling and simulation, the light collective efficiency of the lobster eye focusing system which is based on single reflection in the light wave band will not be affected by the critical parameters. Meanwhile, the speckle of the lobster eye optical system has the sensitivity to direction.Because it is difficult to fabricate the lobster eye lens based on single reflection with low microchannel depth in large field of view, the multi reflective focusing principle of the lobster eye lens with small aspect ratio structure is also be discussed. By initiatively analyzing the prism tunel diagram principle of the lobster eye lens, it is found that multi reflecion may generate even reflection stray light with more complicated emergence angle, but multi reflection of the odd reflection light is able to compensate for the spherical abberation which would acquire a better focusing effect. The compensation effect would enhance with the decrease of the aspect ratio of the microchannel unit.On the basis of the previous study, the restriction method to the even light stray of the lobster eye in the light wave band has been discussed. Proposing the end coating absorption and through type absorption to inhibit even stray light and getting evident stray light inhibition effect carry the lobster eye lens in the long wave band a step forward to pratical application.Finally, under the condition of existing processing technology, the Lobster-eye lens experimental prototype LP-65have been made and the result of the experiment based on this device proved the focusing principle of reflective superposition eye well. Meanwhile, the double cross image was found in the experimentation, this phenomemon is produced by the structural features of the experimental prototype, the software simulated analysis was achieved to test the correctness of the experiment.