發(fā)布時(shí)間：2018-05-18 21:56

  本文選題：光學(xué)設(shè)計(jì) + 離軸三反系統(tǒng)�。� 參考：《光學(xué)學(xué)報(bào)》2014年08期

【摘要】：為滿足天文望遠(yuǎn)系統(tǒng)大F數(shù)、長焦距、輕小型化、高成像質(zhì)量、高消雜光比等要求,采用庫克離軸三反消像散(TMA)光學(xué)結(jié)構(gòu)形式,設(shè)計(jì)了參數(shù)為焦距f′=24m,F數(shù)16,視場(chǎng)1.6°×1°的離軸望遠(yuǎn)系統(tǒng)。設(shè)計(jì)了系統(tǒng)的外遮光罩及其擋光環(huán),并對(duì)系統(tǒng)內(nèi)部的雜光陷阱結(jié)構(gòu)進(jìn)行優(yōu)化。利用雜光分析軟件對(duì)系統(tǒng)的點(diǎn)源透射率(PST)進(jìn)行仿真計(jì)算,結(jié)合正向追跡和反向追跡兩種方法尋找關(guān)鍵面與關(guān)鍵路徑,反復(fù)迭代優(yōu)化改進(jìn)相應(yīng)光機(jī)結(jié)構(gòu)。設(shè)計(jì)及仿真結(jié)果表明,系統(tǒng)各視場(chǎng)光學(xué)傳遞函數(shù)均接近衍射極限,視場(chǎng)外規(guī)避角40°時(shí),PST小于10-11,滿足空間天文望遠(yuǎn)系統(tǒng)對(duì)成像質(zhì)量和雜光抑制的要求。
[Abstract]:In order to meet the requirements of large F number, long focal length, light and miniaturization, high imaging quality and high ratio of light to clutter, the optical structure of Cook's off-axis antialiasing and astigmatic TMA was adopted in order to meet the requirements of astronomical telescopes. An off-axis telescopic system with a focal length of 24mt F number of 16 and a field of view of 1.6 擄脳 1 擄is designed. The system outer shade and its halo are designed, and the stray trap structure is optimized. The point source transmittance (PST) of the system is simulated by using the stray light analysis software. The key plane and the critical path are found by combining the forward tracing method and the reverse tracing method, and the corresponding optical mechanical structure is optimized and improved repeatedly. The design and simulation results show that the optical transfer function of each field of view of the system is close to the diffraction limit, and the PST is less than 10-11 when the out-of-field evading angle is 40 擄, which meets the requirements of the space astronomical telescope system for imaging quality and suppression of stray light.
【作者單位】： 中國科學(xué)院長春光學(xué)精密機(jī)械與物理研究所中國科學(xué)院光學(xué)系統(tǒng)先進(jìn)制造技術(shù)重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金青年科學(xué)基金(61007009)
【分類號(hào)】：TH751

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