Method for manufacturing cross prism

Details Method for manufacturing cross prism Method for manufacturing cross prism

2005-04-15

2008-10-21

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S640000

Reexamination Certificate

active

07440191

ABSTRACT:
For the purpose of depositing deviation-free dichroic coatings of high plane rectitude, there is disclosed a method starting with preparation of glass assembly units each composed of first and second glass members of different lengths. A first dichroic coating10A is deposited on a lateral side of one glass member, and the other glass member is joined on the first dichroic coating10A on the one glass member to obtain a glass assembly unit5.A lateral side of the glass assembly unit5is ground to one and same plane at an angle of 90 degrees, and then two edge lines on the opposite side are ground at an angle of 45 degrees to obtain a prism member. A second dichroic coating is deposited on the prism member, and joined with another prism member without a second dichroic coating to obtain a parental cross prism material to be cut into cubes for use as cross prisms.

REFERENCES:
patent: 3989495 (1976-11-01), Siegmund
patent: 5683480 (1997-11-01), Taniguchi
patent: 6212014 (2001-04-01), Lehman et al.

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