Attachable portable lighting device and methods of operation

1. A clip-on lighting device, comprising:

a housing comprising a front end, a lower surface and an upper surface;

a plurality of light sources positioned at the front end of the housing;

a cover at the front end of the housing in front of the plurality of light sources, wherein the cover is at least partially transparent;

a plurality of lenses integrated into the cover and proximate to the plurality of light sources, wherein at least some of the plurality of light sources emit substantial light through the plurality of lenses and another of the plurality of light sources emits substantial light through the at least partially transparent cover in a region between adjacent lenses; and

a clip coupled to the lower surface.

2. The device of claim 1 , wherein the plurality of lenses are magnifier lenses and correspond to the light sources and there are less lenses than light sources and at least one of the light sources emits light that does not traverse any of the lenses.

3. The device of claim 1 , further comprising an apparel item, wherein the clip is removably attached to the apparel item.

4. The device of claim 3 , wherein the apparel item is a baseball cap with a brim, wherein the clip is removably attached to the brim.

5. The device of claim 1 , wherein the plurality of light sources are operable in a flood mode and a spot mode.

6. The device of claim 1 , further comprising a switch that selects a mode of operation.

7. The device of claim 1 , wherein the plurality of light sources include a first LED, a second LED, and a third LED.

8. The device of claim 7 , wherein the plurality of lenses include a first lens axially aligned with the first LED and a second lens axially aligned with the second LED, wherein the third LED emits substantially all light through the cover in a region between the first and second lenses.

9. The device of claim 7 , wherein the first LED is aligned with a first lens of the plurality of lenses and the second LED is aligned with a second lens of the plurality of lenses.

10. The device of claim 9 , wherein the first lens and the second lens are aligned to yield parallel light beams.

11. The device of claim 9 , wherein the first lens and the second lens are tilted towards each other at a selected angle to yield a substantially overlapped spot at a selected distance.

12. The device of claim 9 , wherein the first lens and the second lens are tilted away from each other at a selected angle to yield a divergent spot at a selected distance.

13. The device of claim 1 , wherein the plurality of light sources are operable in a divergent mode.

14. The device of claim 1 , further comprising a battery to supply power that supplies power for the plurality of light sources.

15. The device of claim 14 , wherein the battery is a coin cell lithium battery.

16. The device of claim 14 , wherein the battery includes a lithium iron disulfide roundcell.

17. A method of operating a clip light, the method comprising:

providing a clip light having a plurality of light sources and a plurality of lenses integrated into a cover in front of the plurality of light sources, wherein at least some of the plurality of light sources emit substantial light through the plurality of lenses and another of the plurality of light sources emits substantial light through the at least partially transparent cover in a region between adjacent lenses;

attaching the clip light to an apparel item; and

activating the clip light to emit light from the plurality of light sources.

18. The method of claim 17 , further comprising selecting a spot mode and emitting the light through the plurality of lenses.

19. The method of claim 17 , further comprising selecting a divergent mode.

20. The method claim 17 , further comprising selecting an area mode wherein the light from at least one of the plurality of light sources does not substantially pass through the plurality of lenses.