Optical element comprising a transparent substrate and an...

Details Optical element comprising a transparent substrate and an... Optical element comprising a transparent substrate and an...

G - Physics

02

B

88/97.2

G02B 1/10 (2006.01) C03C 17/34 (2006.01) G02B 1/11 (2006.01)

Patent

CA 1242603

- 14 - ABSTRACT : An optical element is described which comprises a transparent substrate and, on this substrate, an anti- reflection coating fox the range of wavelengths from approximately 700 nm to approximately 1700 nm, which coating comprises a plurality of uniform layers with a refractive index which decreases towards the outside, and an underlying basic coating. The effective refractive index at the top of the basic coating is at least 2.5 and the basic coating comprises a graded-index layer.

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