Achromatized beam splitter of low polarization

Details Achromatized beam splitter of low polarization Achromatized beam splitter of low polarization

1982-01-15

1983-11-15

Henry, Jon W.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

350164, 427166, G02B 2710, G02B 528, G02B 504

Patent

active

044152337

ABSTRACT:
An achromatized beam splitter of a low polarization comprising a transparent first prism, a transparent second prism and a thin film group provided between the first prism and the second prism. The thin film group comprises, in succession from the first prism to the second prism, a first dielectric material thin film layer provided on the inclined surface of the first prism which first layer is a mixture of titanium oxide and zirconium oxide, a metal thin film layer provided on the first dielectric material thin film layer which metal layer consists of silver, and a second dielectric material thin film layer provided on the metal thin film layer which second layer is a mixture of titanium oxide and zirconium oxide. The second dielectric material thin film layer has a film thickness substantially equal to that of the first dielectric material thin film layer.

REFERENCES:
patent: 2815695 (1957-12-01), Scharf et al.
patent: 3559090 (1971-01-01), Refermat et al.
patent: 3934961 (1976-01-01), Itoh et al.
patent: 4161547 (1979-07-01), Kienel
patent: 4260222 (1981-04-01), Kozawa
patent: 4367921 (1983-01-01), Sawamua et al.

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