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    Scanning field mirror, also often called F-Theta field mirror or f-θ field mirror, is a specia...

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  • What is the relationship between the central wavelength and bandwidth of the filter?

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    The connection of the bandwidth of the filter is often used in bandpass filters (divided into narrow...

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  • Refractive index and expression symbols in optics

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    Refractive index is an important concept in optics, which describes the characteristics of the chang...

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