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首页> 外文会议>Display technologies and applications for defense, security, and avionics VIII; and Head- and Helmet-Mounted Displays XIX >Night Vision Goggle Stimulation using LCoS and DLP Projection Technology, which is better?
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Night Vision Goggle Stimulation using LCoS and DLP Projection Technology, which is better?

机译：使用LCoS和DLP投影技术的夜视镜刺激，哪个更好？

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High fidelity night-vision training has become important for many of the simulation systems being procured today. The end-users of these simulation-training systems prefer using their actual night-vision goggle (NVG) headsets. This requires that the visual display system stimulate the NVGs in a realistic way. Historically NVG stimulation was done with cathode-ray tube (CRT) projectors. However, this technology became obsolete and in recent years training simulators do NVG stimulation with laser, LCoS and DLP projectors. The LCoS and DLP projection technologies have emerged as the preferred approach for the stimulation of NVGs. Both LCoS and DLP technologies have advantages and disadvantages for stimulating NVGs. LCoS projectors can have more than 5-10 times the contrast capability of DLP projectors. The larger the difference between the projected black level and the brightest object in a scene, the better the NVG stimulation effects can be. This is an advantage of LCoS technology, especially when the proper NVG wavelengths are used. Single-chip DLP projectors, even though they have much reduced contrast compared to LCoS projectors, can use LED illuminators in a sequential red-green-blue fashion to create a projected image. It is straightforward to add an extra infrared (NVG wavelength) LED into this sequential chain of LED illumination. The content of this NVG channel can be independent of the visible scene, which allows effects to be added that can compensate for the lack of contrast inherent in a DLP device. This paper will expand on the differences between LCoS and DLP projectors for stimulating NVGs and summarize the benefits of both in night-vision simulation training systems.
机译：高保真夜视训练对于当今购买的许多仿真系统已经变得很重要。这些模拟培训系统的最终用户更喜欢使用其实际的夜视镜（NVG）耳机。这就要求视觉显示系统以逼真的方式刺激NVG。从历史上看，NVG刺激是通过阴极射线管（CRT）投影仪完成的。但是，这项技术已过时，近年来，训练模拟器使用激光，LCoS和DLP投影仪进行NVG刺激。 LCoS和DLP投影技术已经成为刺激NVG的首选方法。 LCoS和DLP技术在刺激NVG方面都有优点和缺点。 LCoS投影仪的对比度能力是DLP投影仪的5-10倍以上。投影的黑电平与场景中最亮的对象之间的差异越大，NVG刺激效果越好。这是LCoS技术的优势，特别是在使用正确的NVG波长时。尽管单芯片DLP投影仪与LCoS投影仪相比对比度大大降低，但仍可以使用LED照明器以连续的红-绿-蓝方式创建投影图像。将额外的红外（NVG波长）LED添加到此顺序的LED照明过程中很简单。该NVG通道的内容可以独立于可见场景，从而可以添加效果，以补偿DLP设备固有的对比度不足。本文将扩展LCoS和DLP投影仪之间的差异，以刺激NVG，并总结两者在夜视模拟培训系统中的优势。

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