Patent ID: 6014274
Filing Date: 2000-01-11
Classification: G02B

Abstract:
A multi-layer laser resistant structure comprising:an outer layer;an inner layer;means for maintaining said outer layer and said inner layer a generally fixed distance apart;a liquid filling the space between said outer layer and said inner layer to form a generally intermediate liquid layer; andmeans for hermetically sealing the space between said inner and outer layers to contain said liquid, said inner and outer layers and said liquid having essentially equal indices of refraction in the visible portion of the electromagnetic spectrum, said outer layer and said liquid being generally highly absorptive to laser radiation such that said outer layer is adapted to become irreversibly ablated under the influence of laser radiation incident thereon, with said liquid adapted to pass through any hole generated in said outer layer by laser radiation incident thereon, and such that said outer layer and said liquid are adapted to react under the influence of the incident laser radiation to seal each said hole when said structure cools.