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Diffraction Grating Part Number System

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Diffraction Grating Part Number System

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All standard Richardson gratings have a catalog number, according to the following format: AA BBB CC DD - EEE x. The 1st and 2nd characters AA are numerals that indicate the type of grating, The 3rd, 4th and 5th characters BBB are numerals that indicate the size of the grating substrate. Size codes are listed on the grating product pages. The 6th and 7th characters CC are letters that indicate the substrate material, The 8th and 9th characters DD are numerals that indicate the type of coating. The 10th, 11th and 12th characters EEE serve to identify the master grating groove parameters: the groove frequency, blaze angle and blaze wavelength. The last character x indicates the type of master grating used to make the product.

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