Manufacture method for blazed concave grating

摘要

A manufacture method for a blazed concave grating is provided, including: replicating a blazed concave grating by means of a replication process, after the replication is completed, conducting heat preservation and cooling, then separating two gratings (G1, G2) by using different pulling manners respectively, and finally splicing the replicated and separated concave grating blanks, to obtain a required blazed concave grating. This manufacture method can solve the problem of a big error in an existing replication method for a blazed concave grating.

主权项

1. A manufacture method for a blazed concave grating, comprising the following steps:
A, preparing a convex blazed master grating; B, preparing a concave grating substrate, and preparing a segmentation sheet; C, replicating a concave grating, wherein during replication, the segmentation sheet is vertically placed in the middle of the convex blazed master grating, so as to replicate two independent gratings on the convex blazed master grating; D, separating blazed concave gratings: separately pulling the two independent gratings along two different directions, so as to separate the two independent gratings from the convex blazed master grating; and E, splicing the concave gratings: splicing the separated gratings.