Optical: systems and elements – Mirror – Including specified control or retention of the shape of a...
Patent
1997-06-02
1999-07-27
Spyrou, Cassandra
Optical: systems and elements
Mirror
Including specified control or retention of the shape of a...
359883, 359514, G02B 508, G02B 7188, G02B 7182
Patent
active
059300582
ABSTRACT:
A thin film mirror including a frame, a board, and a thin plastic film having a reflective metal deposit on one side thereof. The thin plastic film is pre-stretched over the frame and is secured thereto by an epoxy adhesive and a double-sided tape which prevents creep of the mirror during curing of the epoxy. The board is adhered to the reverse of the frame in order to protect the reflective surface of the mirror and to impart additional rigidity to the structure. Various embodiments of the thin film mirror are provided which employ an aperture to connect the air space formed between the mirror and the board with the atmosphere to thereby avoid any deformation of the mirror's surface due to atmospheric pressure changes. These various embodiments also include filter mechanisms to allow air flow but prevent debris from entering the air space. Various other embodiments incorporate an opaque tape disposed at and adhered to the periphery of the mirror to disguise any imperfections therein. In this way, a precise planar mirror surface may be fabricated that has all the advantages of a traditional glass mirror without the undesirable weight and fragility associated with those mirrors.
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Mir-Tec LLC
Robinson Mark A.
Spyrou Cassandra
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