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Home › Apparatus and method for detecting foreign substance based on a difference in reading level of reflected light in a first wavelength range and a second wavelength range

Apparatus and method for detecting foreign substance based on a difference in reading level of reflected light in a first wavelength range and a second wavelength range

US Patent 11509776 · Granted Nov 22, 2022

Estimated economic value: $672,000 ⓘ

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