Patent ID: 6998003

Claim:
A method for manufacturing an optical device containing an optical path, the device having a first optically effective layer system and a second optically effective layer system, the first optically effective layer system abutting the second optically effective layer system at a predetermined angle and in an abutment area of the device, the optical path passing through the abutment area, the method comprising the steps of: providing at least two sub-bodies of a base body; providing at each of said at least two sub-bodies a surface so that said surfaces of said at least two sub-bodies are complementary to each other and snugly fit on one another; providing along at least one of said complementary surfaces, the first optically effective layer system; joining said sub-bodies along said complementary surfaces so as to embed said the first optically effective layer system between said sub-bodies and thus forming an assembled sub-body; machining a continuous surface on said assembled sub-body and at the predetermined angle to said complementary surfaces and said embedded first optically effective layer system where the first optically effective layer system abuts said machined continuous surface in the abutment area; and providing the second optically effective layer system along said continuous surface and across the abutment area.