Stand that enables a mobile device to read barcodes in presentation mode
地域：
UT
UT Murray
摘要
A presentation stand for enabling a mobile device to read barcodes in presentation mode includes a cradle portion that is connected to the base portion. The cradle portion is configured to hold the mobile device in a position for reading a barcode. A shield portion is attached to the cradle portion and configured to modify a field of view of a camera of the mobile device. The shield portion is also configured to modify a field of illumination of an illumination source of the mobile device. The shield portion includes a camera optic system that is at least partially aligned with the camera of the mobile device when the mobile device is held in the cradle portion. The shield portion also includes an illumination optic system that is at least partially aligned with the illumination source of the mobile device when the mobile device is held in the cradle portion.
說明書
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This application is a continuation of U.S. patent application Ser. No. 16/212,392 filed on Dec. 6, 2018. The aforementioned application is expressly incorporated herein by reference in its entirety.
A barcode is an optical machine-readable representation of information. Devices for identifying or extracting information from barcodes are often referred to as barcode readers or barcode reading devices. Image-based barcode readers operate by capturing and decoding images of barcodes. In typical operation, one or more light sources are activated to illuminate a region of space that includes a barcode. Light is reflected from the barcode toward the barcode reader. One or more lenses within the barcode reader focus an image of the barcode onto an image sensor, which is a two-dimensional array of photosensors (i.e., detectors that are sensitive to electromagnetic radiation). The photosensors are read electronically to provide a two-dimensional array of image data corresponding to the barcode. A decoder then processes the image data and extracts the information contained in the barcode.
權(quán)利要求
What is claimed is:1. A presentation stand for enabling a mobile device to read barcodes in presentation mode, the mobile device comprising a camera and a first illumination source, the presentation stand comprising:a base portion comprising a surface for placing a barcode; a cradle portion connected to the base portion, the cradle portion being configured to hold the mobile device in a position for reading the barcode; and a shield portion attached to the cradle portion, the shield portion being configured to modify a field of view of the camera to generate a system field of view when the mobile device is held in the cradle portion, wherein the shield portion comprises one or more reflective surfaces that redirect an optical pathway of the system field of view from a first direction perpendicular to a back surface of the mobile device to a second direction that intersects with the surface. 2. The presentation stand of claim 1 , wherein the shield portion comprises a camera optic system that is at least partially aligned with the camera of the mobile device when the mobile device is held in the cradle portion and wherein the camera optic system modifies the field of view of the camera to generate the system field of view. 3. The presentation stand of claim 2 , wherein the shield portion comprises an illumination optic system that is at least partially aligned with the first illumination source of the mobile device when the mobile device is held in the cradle portion and the illumination optic system modifies a field of illumination of the first illumination source to generate a system illumination field. 4. The presentation stand of claim 3 , wherein the system illumination field has a system angular size that is different from an angular size of the field of illumination of the first illumination source. 5. The presentation stand of claim 4 , wherein the one or more reflective surfaces are additionally configured to redirect the system illumination field from the first direction to the second direction. 6. The presentation stand of claim 3 , wherein:the illumination optic system comprises at least one illumination optic system lens, the at least one illumination optic system lens and the first illumination source of the mobile device defining an exposure illumination system, the exposure illumination system emitting the system illumination field with a system angular size that is different from an angular size of the field of illumination emitted by the first illumination source; the mobile device further comprises a second illumination source; and the illumination optic system further comprises a target generating structure that is at least partially aligned with the second illumination source when the mobile device is held in the cradle portion of the presentation stand, the target generating structure being configured to modify a second illumination field emitted by the second illumination source to generate a targeting pattern. 7. The presentation stand of claim 6 , wherein the one or more reflective surfaces are additionally configured to:redirect the system illumination field from the first direction to the second direction; and redirect the targeting pattern from the first direction to the second direction. 8. The presentation stand of claim 3 , wherein:the shield portion comprises a first chamber and a second chamber; the camera optic system is housed in the first chamber; the illumination optic system is housed in the second chamber; and the first chamber is optically isolated from the second chamber. 9. The presentation stand of claim 1 , wherein the barcode is located on the surface and there is a distance between the surface and the cradle portion. 10. A presentation stand for enabling a mobile device to read barcodes in presentation mode, the mobile device comprising a camera and a first illumination source, the camera comprising a camera lens, the presentation stand comprising:a base portion configured for placement on a surface; a cradle portion connected to the base portion, the cradle portion being configured to hold the mobile device in a position for reading a barcode; a shield portion attached to the cradle portion; a camera optic system within the shield portion, the camera optic system comprising at least one camera optic system lens that is at least partially aligned with the camera lens when the mobile device is held in the cradle portion of the presentation stand; and an illumination optic system within the shield portion, wherein the illumination optic system comprises a target generating structure that is at least partially aligned with the first illumination source when the mobile device is held in the cradle portion of the presentation stand, the target generating structure configured to modify a first illumination field emitted by the first illumination source to generate a targeting pattern. 11. The presentation stand of claim 10 , wherein the target generating structure comprises:one or more apertures configured to shape the first illumination field emitted by the first illumination source to generate the targeting pattern; and a filter configured to pass illumination corresponding to a particular range of wavelengths. 12. The presentation stand of claim 10 further comprising one or more reflective surfaces that redirect the targeting pattern from a first direction that does not intersect with a region of space where the barcode is located to a second direction that intersects with the region of space where the barcode is located. 13. The presentation stand of claim 12 , wherein:the at least one camera optic system lens is configured to modify a field of view of the camera lens to provide a system field of view that is different in angular size from the field of view of the camera lens; and the one or more reflective surfaces redirect an optical pathway of the system field of view from the first direction to the second direction. 14. The presentation stand of claim 13 , wherein:the mobile device further comprises a second illumination source; the illumination optic system comprises at least one illumination optic system lens that is at least partially aligned with the second illumination source of the mobile device when the mobile device is held in the cradle portion of the presentation stand, the at least one illumination optic system lens being configured to modify a second illumination field emitted by the second illumination source to provide a system illumination field with a system angular size that is different from an angular size of the second illumination field; and the one or more reflective surfaces are additionally configured to redirect the system illumination field from the first direction to the second direction. 15. The presentation stand of claim 13 , wherein:the shield portion comprises a first chamber and a second chamber; the camera optic system is housed in the first chamber; the illumination optic system is housed in the second chamber; and the shield portion further comprises a barrier between the first chamber and the second chamber, the barrier being configured to optically isolate the first chamber from the second chamber such that illumination from the first illumination source does not enter the camera without first reflecting from an object within the system field of view. 16. A presentation stand for enabling a mobile device to read barcodes in presentation mode, the mobile device comprising a camera and a first illumination source, the camera comprising a camera lens, the presentation stand comprising:a base portion configured for placement on a surface; a first arm portion that extends upward in a substantially vertical direction from the base portion; a cradle portion configured to hold the mobile device in a position for reading a barcode; a second arm portion that extends outward in a substantially horizontal direction and connects to the cradle portion via a swivel joint, wherein the swivel joint rotates around a vertical axis; a third arm portion that connects the first arm portion and the second arm portion; and a shield portion attached to the cradle portion, the shield portion comprising:a camera optic system comprising at least one camera optic system lens that is at least partially aligned with the camera lens when the mobile device is held in the cradle portion of the presentation stand; and an illumination optic system that is at least partially aligned with the first illumination source of the mobile device when the mobile device is held in the cradle portion. 17. The presentation stand of claim 16 , wherein the second arm portion has a length longer than the first arm portion. 18. The presentation stand of claim 16 , wherein the at least one camera optic system lens is configured to modify a field of view of the camera lens to provide a system field of view that is different in angular size from the field of view of the camera lens and wherein the presentation stand further comprises:one or more reflective surfaces that redirect an optical pathway of the system field of view from a first direction that does not intersect with a region of space where the barcode is located to a second direction that intersects with the region of space where the barcode is located. 19. The presentation stand of claim 18 , wherein:the illumination optic system comprises a target generating structure that is at least partially aligned with the first illumination source when the mobile device is held in the cradle portion of the presentation stand, the target generating structure being configured to shape a first illumination field emitted by the first illumination source into a targeting pattern; and the one or more reflective surfaces are additionally configured to redirect the targeting pattern from the first direction to the second direction. 20. The presentation stand of claim 18 , wherein the mobile device further comprises a second illumination source and wherein:the illumination optic system comprises at least one illumination optic system lens that is at least partially aligned with the first illumination source of the mobile device when the mobile device is held in the cradle portion of the presentation stand, the at least one illumination optic system lens being configured to modify a first illumination field emitted by the first illumination source to provide a system illumination field with a system angular size that is different from an angular size of the first illumination field; the illumination optic system further comprises a target generating structure that is at least partially aligned with the second illumination source when the mobile device is held in the cradle portion of the presentation stand, the target generating structure being configured to shape a second illumination field emitted by the second illumination source into a targeting pattern; and the one or more reflective surfaces are additionally configured to redirect the system illumination field and the targeting pattern from the first direction to the second direction.
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