Optical device and fusion seal

Details Optical device and fusion seal Optical device and fusion seal

G - Physics

02

B

G02B 6/42 (2006.01) C03C 8/14 (2006.01) C03C 8/24 (2006.01) C03C 27/10 (2006.01) G02B 6/36 (2006.01)

Patent

CA 2204480

An optical device, and a method of producing the device, are disclosed. The device comprises a substrate having a near-zero, or negative, coefficient of thermal expansion and an optical component affixed to the substrate with a fusion seal, the seal being the fused product of a low melting glass frit having a positive CTE and a mill addition of a glass-ceramic having an effective negative CTE.

L'invention est constituée par un dispositif optique et sa méthode de fabrication. Ce dispositif comporte un substrat ayant un coefficient d'expansion thermique quasi nul ou négatif et un élément optique fixé au substrat par fusion d'un matériau de scellement, ce matériau étant obtenu par la fusion d'une fritte de verre à basse température de fusion et à coefficient d'expansion thermique positif, et d'une vitrocéramique à coefficient d'expansion thermique négatif.

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