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US 8,427,727 B2Granted
Oscillating mirror for image projection
AssigneeAlcatel Lucent
InventorsGang Chen, Roland Ryf, Maria Elina Simon
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Abstract
An apparatus includes a substrate and a mirror. The mirror is attached to the substrate via a spring. An electro-mechanical driver is operable to cause the mirror to rotationally oscillate about first and second non-collinear axes at different first and second frequencies.
Claims20
An apparatus comprising:
- a substrate;
- an electro-mechanical driver;
- a spring;
- a mirror being attached to said substrate via said spring, said driver being operable to cause said mirror to rotationally oscillate about first and second non-collinear axes at different respective first and second frequencies;
- a spatial light modulator having a plurality of separately controllable pixels;
- and
- wherein said mirror is configured to direct a diffused illumination beam from a coherent optical source toward said spatial light modulator such that said illumination beam simultaneously illuminates the pixels of a two-dimensional array while sweeping a path over said spatial light modulator.
4 more elements
Dependencies are inferred from the claim text.