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US 7,352,519 B2Granted
Lens module
AssigneeSymbol Technologies, Inc.
InventorsIgor Vinogradov, Mark Drzymala
Life of this patent
Estimating the term…
Abstract
Combining one or more elements of a beam shaping assembly in a lens module to, for example, reduce the mechanical tolerances in construction of the assembly. An exemplary lens module comprises a molded plastic lens with alignment features, a cylindrical surface, a focusing surface, and an aperture. The aperture is formed by surface positioned on the lens module at an angle greater than the angle for total internal reflection.
Claims33
A lens module comprising:
- a focusing lens;
- and
- an aperture which is part of said focusing lens, wherein said aperture is formed by at least one surface positioned at an angle larger than a critical angle for total internal reflection, the at least one surface reflecting a portion of light within the focusing lens.
A lens module comprising:
- a focusing lens;
- an aperture which is part of said focusing lens, wherein said aperture is formed by at least one surface positioned at an angle larger than a critical angle for total internal reflection, the at least one surface reflecting a portion of light within the focusing lens;
- and
- a lens holder.
1 more element
A lens module comprising:
- a focusing lens, comprising a first surface for receiving light, and wherein said first surface has one of a rotationally-symmetrical shape and a non-rotationally-symmetrical shape, and wherein said focusing lens comprises a second surface for focusing light exiting said focusing lens, the second surface reflecting a portion of light within the focusing lens;
- and an alignment feature.
A scan module comprising:
- a laser;
- a lens module comprising, a focusing lens, and an aperture which is part of said focusing lens, wherein said aperture is formed by at least one surface positioned at an angle larger than a critical angle for total internal reflection, the at least one surface reflecting a portion of light within the lens module;
- and
- a sensor.
1 more element
A method of shaping a laser beam comprising:
- directing light towards a lens module comprising,
- a focusing lens, and
- an aperture which is part of said focusing lens, wherein said aperture is formed by at least one surface positioned at an angle larger than a critical angle for total internal reflections,
- the at least one surface reflecting a portion of light within the focusing lens.
1 more element
Dependencies are inferred from the claim text.