English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

By using the optical design software Zemax, on the basis of geometric opticsand primary aberration theory, the optimal design method of collimating mirroris discussed and proposed, which eliminates the influence of conical concaveacoustic lens on beam transmission. The lens system imaging before and afterthe optimization of the calibration lens is simulated by numerical simulation:from the simulation results, after the calibration mirror is optimized, thespherical aberration of the system is greatly reduced,. The root mean squareradius of the spot under the 0 degree field of view changes from 993.842micrometers to 8.091 micrometers, and the geometric radius changes from 1000.98micrometers to 11.087 micrometers; the MTF curve is obviously improved, thecut-off frequency is increased by nearly 15 times, and the MTF value of themeridian direction and sagittal direction under the 0 degree field of view arebetween 0.9 and 1; The proposed optimization method of the collimating mirrorhas important theoretical guiding significance for the study of the large depthof field photoacoustic microscopy imaging system.

Optimization method to eliminate the influence of the conical acoustic lens on the transmission of laser beam using ZEMAX