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首页> 外文会议>Advanced optics for defense applications: UV therough lwir II >Design of Multiband Optics using Updated Athermal/Achromatic Glass Map
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Design of Multiband Optics using Updated Athermal/Achromatic Glass Map

机译：使用更新的无热/消色差玻璃图设计多波段光学器件

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Recently, optical materials have been developed by Schott and NRL to improve material selection in the SWIR, MWIR, and LWIR wavelength regions. In addition, new multiband detectors are reaching maturity, leading to a natural push for common aperture lens systems. Detectors that can span the SWIR/MWIR, MWIR/LWIR or SWIR/MWIR/LWIR wavelengths regions will require complex optical systems to effectively utilize their full potential. Designing common aperture wide-band systems that are both achromatized and passively athermal, especially while maintaining SWAP-c (size, weight, power and cost), poses significant challenges. Through use of the updated yv-v diagram, which provides guidance on material combinations that both achromatize and athermalize, part of that challenge is reduced. This updated yv-v diagram uses instantaneous Abbe number and peak wavelength. The instantaneous Abbe number is a function of wavelength and is the scaled reciprocal of the instantaneous dispersion. The instantaneous Abbe number is defined at the peak wavelength, which occurs when the second derivative of the index of refraction goes to zero. Three examples will be presented using this updated athermal/achromatic glass map to demonstrate its effectiveness. These design examples will include a SWIR/MWIR design, a MWIR/LWIR design and, a SWIR/MWIR/LWIR design.
机译：最近，Schott和NRL开发了光学材料，以改善SWIR，MWIR和LWIR波长区域中的材料选择。另外，新的多波段检测器已经成熟，这自然推动了普通光圈镜头系统的发展。能够跨越SWIR / MWIR，MWIR / LWIR或SWIR / MWIR / LWIR波长区域的探测器将需要复杂的光学系统，以有效利用其全部潜力。设计既消色差又被动消热的通用孔径宽带系统，尤其是在维持SWAP-c（尺寸，重量，功率和成本）的同时，提出了巨大的挑战。通过使用更新的yv-v图，该图为无色和无色材料组合提供了指导，减少了部分挑战。此更新的yv-v图使用瞬时阿贝数和峰值波长。瞬时阿贝数是波长的函数，并且是瞬时色散的比例倒数。瞬时阿贝数定义在峰值波长处，该峰值发生在折射率的二阶导数变为零时。使用此更新的消热/消色差玻璃图将展示三个示例，以证明其有效性。这些设计示例将包括SWIR / MWIR设计，MWIR / LWIR设计和SWIR / MWIR / LWIR设计。

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