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DEVELOPMENT OF REACTION-SINTERED SiC MIRROR FOR SPACE-BORNE OPTICS

机译：用于空间光学元件的反应烧结SiC镜的研制

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We are developing high-strength reaction-sintered silicon carbide (RS-SiC) mirror as one of the new promising candidates for large-diameter space-borne optics. In order to observe earth surface or atmosphere with high spatial resolution from geostationary orbit, larger diameter primary mirrors of 1-2 m are required. One of the difficult problems to be solved to realize such optical system is to obtain as flat mirror surface as possible that ensures imaging performance in infrared - visible - ultraviolet wavelength region. This means that homogeneous nano-order surface flatness/roughness is required for the mirror. The high-strength RS-SiC developed and manufactured by TOSHIBA is one of the most excellent and feasible candidates for such purpose. Small RS-SiC plane sample mirrors have been manufactured and basic physical parameters and optical performances of them have been measured. We show the current state of the art of the RS-SiC mirror and the feasibility of a large-diameter RS-SiC mirror for space-borne optics.
机译：我们正在开发高强度反应烧结的碳化硅（RS-SIC）镜像作为大型展望光学的新承诺候选人之一。为了观察来自地球静止轨道的高空间分辨率的地球表面或大气，需要1-2米的较大直径的主镜。实现这种光学系统的难以解决的难题之一是尽可能地获得平坦的镜面，以确保红外可见 - 紫外波长区域中的成像性能。这意味着镜子需要均匀的纳米级表面平坦度/粗糙度。由东芝开发和制造的高强度RS-SIC是此目的最优秀和最可行的候选人之一。已经制造了小型RS-SiC平面样本镜，并测量了基本物理参数和光学性能。我们展示了RS-SIC镜的最新状态，以及用于空间光学元件的大直径RS-SIC镜的可行性。

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