38× zoom ratio wideband TV lens optics
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摘要: 针对大视场高变倍比宽波段光学系统的特点，运用换根方式机械补偿光学系统设计技术和hhp图及孔径图分析法，实现了38变倍比，解决了大视场宽波段系统的初、高级像差难以平衡的难题,同时提出运用凸轮程序公式编程计算不齐焦段的补偿组实际位移量，对Code V的凸轮曲线设计值进行修正的方法，保证了高变倍比光学系统的齐焦性。Abstract: According to the characteristics of large FOV high zoom ratio wideband optical system, a 38 zoom ratio was designed, the primary and advanced aberrations of large FOV wideband system were balanced by using the mechanical compensation technique of changing root, the h-hp diagram and the aperture diagram analysis. A method using the cam formula to calculate the displacement of compensation group with no parfocality by programming and modify the design value of cam curve in Code V was put forward. This method ensured the parfocality of the high zoom ratio optical system.
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Keywords:
- large FOV /
- high zoom ratio /
- mechanical compensation /
- h-hp diagram /
- aperture diagram /
- cam curve
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