Packaged mirror including mirror travel stops
First Claim
1. A mirror subassembly, comprising:
- a base;
electrodes mounted on said base for supplying electrical energy to said mirror subassembly;
a support mounted on said base;
a mirror mounted on said support, said mirror oscillating in response to the electrical energy supplied by said electrodes;
an overlay mounted on said support opposite said base, said overlay including a mirror stop to limit movement of the mirror when the mirror subassembly is subjected to a mechanical shock, said mirror stop being spaced apart from said electrodes; and
a transparent cover mounted on said overlay opposite said support.
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0 Petitions
Accused Products
Abstract
An integrated optical module for an optical scanner has a lens spaced from a vertical-cavity surface-emitting laser (VCSEL) by a spacer of defined dimensions. The module, in an alternative embodiment, includes a wafer frame, a suspended mirror mounted for oscillation on the frame, a wafer substrate bonded beneath the frame and a wafer cover bonded above the frame. The cover includes a mirror travel stop to protect the mirror against shocks. A VCSEL mounted to the wafer cover produces a beam which is shaped and deflected by a diffractive optical element onto the oscillating mirror. The reflected beam passes out of the module toward an indicia to be read. Large numbers of such devices may be fabricated relatively cheaply using wafer-scale processing and assembly technology. Three large wafers are fabricated corresponding respectively to arrays of substrates, frames and covers. The large wafers are bonded together in a sandwich arrangement, and are then diced to produce the individual scan modules. The modules may provide either one-dimensional or two-dimensional scanning.
64 Citations
19 Claims
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1. A mirror subassembly, comprising:
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a base;
electrodes mounted on said base for supplying electrical energy to said mirror subassembly;
a support mounted on said base;
a mirror mounted on said support, said mirror oscillating in response to the electrical energy supplied by said electrodes;
an overlay mounted on said support opposite said base, said overlay including a mirror stop to limit movement of the mirror when the mirror subassembly is subjected to a mechanical shock, said mirror stop being spaced apart from said electrodes; and
a transparent cover mounted on said overlay opposite said support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mirror subassembly, comprising:
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a base;
electrodes mounted on said base for supplying electrical energy to said mirror subassembly;
a support mounted on said base;
a mirror mounted on said support, said mirror oscillating in response to the electrical energy supplied by said electrodes;
an overlay mounted on said support opposite the base, at least one of said base and said overlay including a mirror stop to limit movement of the mirror, said mirror stop having a roughened surface; and
a transparent cover mounted on said overlay opposite said support. - View Dependent Claims (19)
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11. A mirror subassembly, comprising:
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a base;
electrodes mounted on said base for supplying electrical energy to said mirror subassembly;
a support mounted on said base;
a mirror mounted on said support, said mirror oscillating in response to the electrical energy supplied by said electrodes;
an overlay mounted on said support opposite said base, said overlay including a mirror stop to limit movement of the mirror, said mirror stop comprising cantilevered protrusions extending inwardly from edges of said overlay; and
a transparent cover mounted on said overlay opposite said support. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification