Fiber reinforced plastic reflector

Details Fiber reinforced plastic reflector Fiber reinforced plastic reflector

1987-07-08

1989-10-24

Arnold, Bruce Y.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

428186, 4283148, 4289122, G02B 508, G02B 718

Patent

active

048757667

ABSTRACT:
A fiber reinforced plastic reflector has a sandwich construction and comprises a core, two fiber reinforced plastic plates which are secured to opposite sides of the core, and a reflecting film which is formed on the outer surface of one of the fiber reinforced plastic plates. The core is made from an isotropic material having a low density and a low linear expansion coefficient. In one form of the invention, the core is a plate of a material selected from a uniform foamed metal having a density of 0.1-1.0 g/cm.sup.3 ; uniform, porous glass having a density of 0.05-1.0 g/cm.sup.3 ; and a uniform, porous ceramic having a density of 0.3-1.0 g/cm.sup.3. In another form of the invention, the core is a corrugated sheet and a flat sheet which is secured to at least one side of the corrugated sheet, the corrugated sheet and said flat sheet being made of a material selected from a uniform Kevlar fiber reinforced plastic having a density of 0.03-1.0 g/cm.sup.3, a uniform ceramic having a density of 0.03-1.0 g/cm.sup.3, and a uniform carbon fiber reinforced plastic having a density of 0.03-1.0 g/cm.sup.3.

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