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Deep cut-off narrow band filter and optical instrument based on ultra-wide wavelength high reflection
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Two channels filter and the method that two channels filter is prepared using spin coating blue dyes
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A kind of glass of use dip-coating blue ink is as substrate every infrared filter and preparation method thereof
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Mobile phone is taken the photograph every infrared fileter and using the wide-angle and focal length every infrared fileter are double
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The two channels filter and wide angle shot device of a kind of day and night dual-purpose
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High cut-off and low-ripple quasi-rectangular narrowband filter
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Camera filter for day and night
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