Attachment including a targeting optic system that directs illumination from a white light source towards a target area

Patent metadata

Field	Value
Publication number	US-11080497-B2
Application number	US-201916291940-A
Country	US
Kind code	B2
Filing date	Mar 4, 2019
Priority date	Dec 7, 2012
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

Disclosed herein is an attachment for a smartphone. The smartphone may include i) a camera with an image sensor and a focusing lens located on a back side of the smartphone for capturing an image of a target area; and ii) a white light source on the back side of the smartphone. The attachment may include a targeting optic system. When the attachment is secured to the back side of the smartphone, the targeting optic system may receive illumination emitted by the white light source and direct the illumination towards the target area from a location that is not directly in front of the camera's image sensor. The location may be farther from the focusing lens than the white light source when measured parallel to the back side of the smartphone. The attachment may also direct the illumination into the target area via the targeting optic system.

First claim

What is claimed is:

1. An attachment for a smartphone, the smartphone comprising: i) a camera with an image sensor and a focusing lens located on a back side of the smartphone for capturing an image of a target area at the back side of the smartphone; and ii) a white light source on the back side of the smartphone for projecting a field of illumination towards the target area, the attachment comprising:
a targeting optic system which, when the attachment is secured to the back side of the smartphone, receives illumination emitted by the white light source and directs the illumination towards the target area from a location different from a position of the white light source;
wherein the attachment:
directs the illumination from the white light source to the location, wherein the location is a first distance from the focusing lens that is greater than a second distance between the white light source and the focusing lens when the first distance and the second distance are measured parallel to the back side of the smartphone; and
directs the illumination into the target area via the targeting optic system.

2. The attachment of claim 1 , further including a target generating optic that forms one of a targeting point or a targeting pattern within the target area.

3. The attachment of claim 2 , wherein the targeting point or pattern is formed at a center of a field of view of the camera when the camera is at an optimal distance from a barcode.

4. The attachment of claim 1 , further including a collimating element collimating the illumination directed towards the target area.

5. The attachment of claim 4 , further including a target generating optic that forms one of a targeting point or a targeting pattern within the target area.

6. The attachment of claim 5 , wherein the targeting point or pattern is formed at a center of a field of view of the camera when the camera is at an optimal distance from a barcode.

7. The attachment of claim 4 , wherein the illumination is collimated to form a bar, wherein a length of the bar is approximately a width of a field of view of the camera.

8. An attachment for a smartphone, the smartphone comprising: i) a camera with an image sensor and a focusing lens located on a back side of the smartphone for capturing an image of a target area at the back side of the smartphone; and ii) a white light source on the back side of the smartphone for projecting a field of illumination towards the target area, the attachment comprising:
a targeting optic system which, when the attachment is secured to the back side of the smartphone, receives illumination emitted by the white light source and directs the illumination towards the target area from a position different from a location of the white light source;
wherein the attachment:
directs the illumination from the white light source to the position different from the location of the white light source, the position being at a distance from the camera's image sensor that is greater than a distance between the white light source and the camera's image sensor; and
directs the illumination into the target area via the targeting optic system.

9. The attachment of claim 8 , further including a target generating optic that forms one of a targeting point or targeting pattern within the target area.

10. The attachment of claim 9 , wherein the targeting point or targeting pattern is formed at a center of a field of view of the camera when the camera is at an optimal distance from a barcode.

11. The attachment of claim 8 , further including a collimating element collimating the illumination directed towards the target area.

12. The attachment of claim 11 , further including a target generating optic forming one of a targeting point or a targeting pattern within the target area.

13. The attachment of claim 12 , wherein the targeting point or targeting pattern is formed at a center of a field of view of the camera when the camera is at an optimal distance from a barcode.

14. The attachment of claim 11 , wherein the illumination is collimated to form a bar, wherein a length of the bar is approximately a width of a field of view of the camera.

15. A method of reading a barcode using a smartphone, the smartphone comprising: i) a camera with an image sensor and a focusing lens located on a back side of the smartphone for capturing an image of a target area at the back side of the smartphone; and ii) a white light source on the back side of the smartphone for projecting a field of illumination towards the target area, the method comprising:
securing an attachment to the back side of the smartphone over the white light source, wherein the attachment, when secured to the back side of the smartphone, directs illumination emitted by the white light source towards the target area from a position offset from a location of the white light source in order to reduce glare; and
using the camera's image sensor to capture the image of the target area to read the barcode positioned within the target area;
wherein the attachment:
directs illumination from the white light source to the position offset from the location of the white light source, the position being at a first distance from the focusing lens that is greater than a second distance between the white light source and the focusing lens when the first distance and the second distance are measured parallel to the back side of the smartphone; and
directs the illumination into the target area via a targeting optic system.

16. The method of claim 15 , further including a target generating optic that forms one of a targeting point or targeting pattern within the target area.

17. The method of claim 16 , wherein the targeting point or targeting pattern is formed at a center of a field of view of the camera when the camera is at an optimal distance from the barcode.

18. The method of claim 15 , further including a collimating element collimating the illumination directed towards the target area.

19. The method of claim 18 , further including a target generating optic that forms one of a targeting point or a targeting pattern within the target area.

20. The method of claim 19 , wherein the targeting point or targeting pattern is formed at a center of a field of view of the camera when the camera is at an optimal distance from the barcode.

Assignees

• Code Corp

Inventors

• Powell George
• Hoobler Ryan
• Lei Ming
• Russell Garrett
• Ashby Mark

Classifications

• A45C11/002

  for storing portable handheld communication devices, e.g. pagers or smart phones · CPC title

• G06K2207/1011

  Aiming · CPC title

• G06K7/10831 Primary

  Arrangement of optical elements, e.g. lenses, mirrors, prisms (optical elements per se G02B) · CPC title

• G06K7/10811

  Focalisation · CPC title

• H04M1/0264

  for a camera module assembly · CPC title