Scanning-mirror structure having a cut or a composite design...

Details Scanning-mirror structure having a cut or a composite design... Scanning-mirror structure having a cut or a composite design...

2008-07-15

2008-07-15

Phan, James (Department: 2872)

Optical: systems and elements

Deflection using a moving element

By moving a reflective element

C359S848000

Reexamination Certificate

active

10150408

ABSTRACT:
A mirror structure includes a mirror, a reflective face, a cut in the mirror under the face, and a torsion arm attached to the mirror. Such a mirror structure often distorts a scanned image less than prior mirror structures because the cut uncouples the twist-induced strain in the torsion arm from the mirror face, and thus reduces the level of deformation that this strain imparts to the mirror face. Another mirror structure includes a base formed from a first material, a mirror attached to the base and formed from a second material, and a torsion arm attached to the base. Such a composite mirror structure often distorts a scanned image less than prior mirror structures because it reduces the acceleration-induced bending of the mirror and/or the twist-induced strain in the torsion arm, and thus reduces the level of deformation that this bending and/or strain impart to the mirror face.

REFERENCES:
patent: 6919980 (2005-07-01), Miyajima et al.
patent: 2002/0012180 (2002-01-01), Yu et al.

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