System, method and apparatus for providing asset ir illumination for a camera cargo sensor
The present invention provides a cargo imaging device which allows for asset IR illumination and monitoring of the interior of a closed cargo container. According to a first preferred embodiment, the imaging device of the present invention includes a housing which encloses a central lens. The central lens is preferably located between an upper IR light guide and a lower IR light guide. Preferably, the central lens may be formed as a fish-eye lens. Still further, the imaging device of the present invention may preferably further include a BLE transmitter and antenna arrangement which may include an inverted-F BLE antenna and a BLE booster ring surrounding the lens to assist the inverted-F BLE antenna to transmit and receive signals between the cargo interior and the BLE antenna.
1. An imaging device to provide optical sensing within the interior of a closed cargo container, the imaging device comprising:
an outer housing enclosing one or more internal elements of the imaging device;
a central lens, wherein the central lens comprises a fish-eye lens;
a light guide body; wherein the light guide body comprises:
a first light channel configured to receive and direct a first infrared light beam from a first infrared light source, and
a second light channel configured to receive and direct a second infrared light beam from a second infrared light source;
wherein the first light channel comprises a first curved air-polycarbonate interface that collimates the first light beam from the first infrared light source;
wherein the second light channel comprises a second curved air-polycarbonate interface that collimates the second light beam from the second infrared light source.
2. The imaging device of claim 1 , wherein the first curved air-polycarbonate interface is configured to colliminate the first received infrared light beam to a beam divergence of less than +30°.
3. The imaging device of claim 1 , wherein the first curved air-polycarbonate interface is configured to colliminate the first received infrared light beam to a beam divergence of less than +40°.
4. The imaging device of claim 3 , wherein the light guide body further comprises: a gate vestige formed on the light guide body and configured to facilitate alignment of the light guide with an associated housing.
5. The imaging device of claim 1 , wherein the light guide body further comprises:
a folding surface defined by a first face, the first face being angled relative to the first light channel to produce a first angle of incidence that is sufficient to cause total internal reflection of the first infrared light beam.
6. The imaging device of claim 5 , wherein the first face is arranged relative to the first light channel to create an exit angle of 15° from horizontal for the first received infrared light beam.
7. The imaging device of claim 1 , wherein the central lens is encircled by a sealing flange; wherein the sealing flange is attached to the housing of the imaging device.
8. The imaging device of claim 7 , wherein the imaging device further comprises a first BLE arrangement.
9. The imaging device of claim 8 , wherein the first BLE arrangement comprises: a BLE transmitter; a BLE antenna; and a BLE booster ring.
10. The imaging device of claim 9 , wherein the BLE antenna comprises an inverted F antenna.
11. The imaging device of claim 10 , wherein the BLE booster ring comprises a circular ring that surrounds the central lens.
12. The imaging device of claim 11 , wherein the BLE booster ring is configured to preferentially transmit and receive BLE transmissions to and from within the interior of the closed cargo container.
13. The imaging device of claim 12 , wherein the imaging device comprises a first connector, wherein the first connector is configured to connect to a second connector; wherein the first connector is further configured to attach to a connecting device.