【摘要】 用金刚石车床车削的方法在锗材料上成功地加工了折射 衍射混合式红外光学透镜 ,其中的衍射面制作在非球面的基底上 ,是国内首个制作在曲面基底上的混合成像元件 .对折 衍射混合透镜和不带衍射环带的对比透镜的测试结果表明 ,衍射面加工效果良好 ,有效地减小了此单片镜系统的色差 ,明显提高了系统的成像质量 ,与设计结果吻合较好更多还原

【Abstract】 A hybrid diffractive-refractive infrared lens of Germanium was fabricated by means of diamond turning, in which the diffractive surface was produced on an aspheric substrate. Test results for the hybrid lens and a comparative lens without the diffractive structure showed that the diffractive surface was fabricated with good accuracy. It effectively reduced the chromatic aberration of the single lens system, and significantly improved the image quality of the system, which corresponds well to the design result.更多还原