Optical accessory for attachment to mobile device

1. An attachment assembly for use with a mobile device and a case for the mobile device, the mobile device including an imaging device and a mobile-device light source, and the case including a case optical opening that is optically aligned with one or more of the imaging device and the mobile-device light source when the case is secured to the mobile device, the attachment assembly comprising:

an attachment base configured to be secured to the case, with a cut-out of the attachment base disposed at least partly around the case optical opening; and

an attachment body configured to be removably secured to the attachment base in order to removably secure the attachment body to the case;

the attachment body including:

at least one optical device for use with the imaging device during one or more of image targeting and image acquisition; and

a protrusion with a first window and a second window;

the protrusion of the attachment body being configured to extend into the case optical opening, when the attachment body is removably secured to the attachment base and the attachment base is secured to the case, so that the first window is in optical alignment with the imaging device and the second window is in optical alignment with the mobile-device light source.

2. The attachment assembly according to claim 1 , wherein the at least one optical device of the attachment body includes an optical sensor disposed in optical alignment with the second window to receive optical control signals from the mobile-device light source for control of one or more additional optical devices.

3. The attachment assembly according to claim 1 , wherein the attachment body includes a third window;

wherein the at least one optical device of the attachment body includes a beam splitter and a targeting light source;

wherein the beam splitter is configured to direct light from the targeting light source out of the third window onto an imaging target; and

wherein the beam splitter is further configured to permit light to pass from the third window to the first window, to allow the imaging device to acquire images of the imaging target.

4. The attachment assembly according to claim 3 , further comprising:

a chassis configured to secure the beam splitter and the targeting light source within the attachment body, with the targeting light source in optical alignment with the beam splitter and with the beam splitter in optical alignment with the first and third windows.

5. The attachment assembly according to claim 4 , wherein the chassis is formed independently of the attachment body and is configured to engage a recessed area within the attachment body to secure the beam splitter and the targeting light source within the attachment body.

6. The attachment assembly according to claim 5 , wherein the attachment body includes a fourth window for imaging illumination of the imaging target, and an internal support structure extending inwardly from the fourth window; and

wherein the chassis is configured to engage a feature on the internal support structure to secure the beam splitter and the targeting light source within the attachment body.

7. The attachment assembly according to claim 1 , wherein the attachment body includes a fourth window; and

wherein the at least one optical device of the attachment body includes at least one attachment light source that is disposed in optical alignment with the fourth window to provide illumination for image acquisition.

8. The attachment assembly according to claim 1 , further comprising:

a circuit assembly including a plurality of printed circuit boards (“PCBs”) secured to each other by flexible connectors;

wherein, the circuit assembly is configured to be installed within the attachment body with the circuit assembly in a folded configuration, in which a first PCB with a targeting light source is disposed perpendicularly to a second PCB with an optical sensor, and in which the second PCB is disposed parallel to but perpendicularly offset from a third PCB with a power connector.

9. The attachment assembly according to claim 8 , further comprising:

a chassis configured to secure the targeting light source within the attachment body;

wherein the attachment body further includes a third window;

wherein, when the attachment body is secured to the attachment base and the attachment base is secured to the case, the third window is in optical alignment with the first window to enable image acquisition by the imaging device via the first and third windows; and

wherein the chassis secures the targeting light source in optical alignment with the third window by securing the first PCB relative to the third window.

10. The attachment assembly according to claim 1 , wherein the attachment base includes one of an attachment rail and an attachment groove, extending along at least part of the cut-out;

wherein the attachment body includes a different one of the attachment rail and the attachment groove; and

wherein the attachment rail extends into the attachment groove to secure the attachment body to the attachment base.