Compact holographic laser scanning system having a high scanning-volume-to-housing-volume ratio
First Claim
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1. A holographic laser scanner for producing a 3-D laser scanning volume, which comprises:
- a scanner housing having a scanning window; and
a holographic laser scanning means, disposed in said scanner housing, for producing a laser scanning pattern within a 3-D laser scanning volume projected beyond said scanning window, said holographic laser scanning means includinga laser beam source for producing a laser beam, anda plurality of holographic optical elements for scanning said laser beam and producing said laser scanning pattern for omnidirectional scanning of code symbols within said 3-D laser scanning volume,wherein said the ratio of said 3-D scanning volume to the volume of said scanner housing is greater than about 5.0.
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Abstract
A holographic laser scanners of ultra-compact design capable of reading bar and other types of graphical indicia within a large scanning volume using holographic optical elements and visible laser diodes, and also a method of designing and operating the same for use in diverse applications.
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Citations
9 Claims
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1. A holographic laser scanner for producing a 3-D laser scanning volume, which comprises:
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a scanner housing having a scanning window; and a holographic laser scanning means, disposed in said scanner housing, for producing a laser scanning pattern within a 3-D laser scanning volume projected beyond said scanning window, said holographic laser scanning means including a laser beam source for producing a laser beam, and a plurality of holographic optical elements for scanning said laser beam and producing said laser scanning pattern for omnidirectional scanning of code symbols within said 3-D laser scanning volume, wherein said the ratio of said 3-D scanning volume to the volume of said scanner housing is greater than about 5.0. - View Dependent Claims (2, 3, 6, 7, 8)
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4. A holographic laser scanner for scanning bar code symbols within a 3-D scanning volume, comprising:
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a scanner housing having an internal volume and a scanning window; and a holographic scanning mechanism disposed within said scanner housing, having a holographic scanning disc with a plurality of holographic optical elements for scanning a laser beam and producing said laser scanning pattern for scanning of code symbols within a 3-D scanning volume produced from said scanner housing, wherein the ratio of said 3-D scanning volume to the volume of said scanner housing is greater than about 5.0. - View Dependent Claims (5, 9)
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Specification