采用大靶面、高像素数OLED(8.4寸2560×1600)实现了瞄准镜零位走动检测的数字化对准读数需求,OLED经前置投影系统压缩成像后再经准直物镜形成无穷远目标,该目标成像在被测瞄准镜的分划板上,通过移动OLED电子分划来实现被测瞄准镜零位走动的大测量范围下的高分辨率检测.前置投影系统和后续准直系统分开设计,利用ZEMAX软件进行仿真,设计后的系统MTF≥0.3@80lp/mm,点列图弥散斑直径控制在艾里斑以内,达到衍射极限,系统成像质量良好,保证了测量范围大于20mil,分辨率可达到0.015mil.%In this paper,OLED with large target surface and high pixel (8.4 inches,2560×1600) is used and the re-quirement of digitized alignment readout for zero-shift detection is realized. The OLED is imaged through the projection system and then is dealt with the collimation lens as the formation of infinity objective. The target is imaged on the reticle of the measured sighting telescope. By moving the OLED electronic division, high resolution detection under the large range measurement is achieved. The pre-projection system and the subsequent collimation system are designed separately. The ZEMAX software is used to simulate. The MTF of the designed system is more than 0.3@80lp/mm, and the diameter of dispersion spot in the spot diagram is controlled within the Airy disk. The diffraction limit is reached and the imaging quality is good. The wide measurement range of more than 20mil can be achieved and the res-olution with 0.015mil can be reached in the designed system.
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