OPTICAL READER MODULE AND OPTICAL READER
First Claim
1. An optical reader module comprising:
- a first illumination light source that emits reproducing illumination light to an image-capture target containing a hologram in which at least a piece of information reproduced in a predetermined angle area when illuminated from a predetermined angle is recorded, thereby reproducing the information recorded in the hologram;
an image-capturing device that captures an image of the information reproduced from the hologram; and
a first light-projecting unit that projects first-optical-guide-forming light on the image-capture target,wherein a first optical guide projected on the image-capture target takes a predetermined shape when the emission angle of the reproducing illumination light to the hologram is equal to the predetermined angle, andwherein an observer of the image-capture target recognizes misalignment between the emission angle of the reproducing illumination light to the hologram and the predetermined angle, based on distortion of the first optical guide projected on the image-capture target from the predetermined shape.
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0 Petitions
Accused Products
Abstract
An optical reader module includes a first illumination light source that emits reproducing illumination light to an image-capture target containing a hologram in which information reproduced in a predetermined angle area when illuminated from a predetermined angle is recorded, thereby reproducing the information recorded in the hologram; an image-capturing device that captures an image of the information reproduced from the hologram; and a first light-projecting unit that projects first-optical-guide-forming light on the image-capture target. A first optical guide projected on the image-capture target takes a predetermined shape when the emission angle of the reproducing illumination light to the hologram is equal to the predetermined angle. An observer of the image-capture target recognizes misalignment between the emission angle of the reproducing illumination light to the hologram and the predetermined angle, based on distortion of the first optical guide projected on the image-capture target from the predetermined shape.
12 Citations
6 Claims
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1. An optical reader module comprising:
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a first illumination light source that emits reproducing illumination light to an image-capture target containing a hologram in which at least a piece of information reproduced in a predetermined angle area when illuminated from a predetermined angle is recorded, thereby reproducing the information recorded in the hologram; an image-capturing device that captures an image of the information reproduced from the hologram; and a first light-projecting unit that projects first-optical-guide-forming light on the image-capture target, wherein a first optical guide projected on the image-capture target takes a predetermined shape when the emission angle of the reproducing illumination light to the hologram is equal to the predetermined angle, and wherein an observer of the image-capture target recognizes misalignment between the emission angle of the reproducing illumination light to the hologram and the predetermined angle, based on distortion of the first optical guide projected on the image-capture target from the predetermined shape. - View Dependent Claims (2, 3, 4)
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5. An optical reader comprising:
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an illumination light source that emits reproducing illumination light to an image-capture target containing a hologram in which at least a piece of information reproduced in a predetermined angle area when illuminated from a predetermined angle is recorded, thereby reproducing the information recorded in the hologram; an image-capturing unit including an image-capturing device that captures an image of the information reproduced from the hologram; a light-projecting unit that projects optical-guide-forming light to the image-capture target; and a grip that includes a switch for causing the image-capturing unit to start acquisition of the information reproduced from the hologram, wherein an optical guide projected on the image-capture target takes a predetermined shape when the emission angle of the reproducing illumination light to the hologram is equal to the predetermined angle, and wherein an observer of the image-capture target recognizes misalignment between the emission angle of the reproducing illumination light to the hologram and the predetermined angle, based on distortion of the first optical guide projected on the image-capture target from the predetermined shape. - View Dependent Claims (6)
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Specification