1. An illumination device, comprising:
a plurality of LED dies to generate optical radiation;
an interconnect circuit layer to provide electrical connection for the plurality of LED dies;
a plurality of optical waveguides, wherein each of the plurality of optical waveguides includes a first end and a second end, wherein each first end is in optical communication with a corresponding LED die of the plurality of LED dies and said second end comprises an optical focusing element to receive and focus optical radiation emanating from the second end of the optical waveguide; and
an array of optical elements, wherein each optical element of the array of optical elements is interposed between a corresponding first end of the optical waveguide and the corresponding LED die.
2. The illumination device according to claim 1, wherein the array of optical waveguides comprises a plurality of optical fibers.
3. The illumination device according to claim 2, wherein the plurality of optical fibers comprises a plurality of polymer clad silica fibers, each having a core diameter of about 400 to about 1000 micrometers.
4. The illumination device according to claim 2, wherein the second ends of the plurality of fibers are bundled to form a single light illumination source.
5. The illumination device according to claim 2, wherein the second ends of the plurality of fibers are bundled into separate groups to form separate light illumination sources.
6. The illumination device according to claim 1, wherein the array of optical elements comprises an array of passive optical elements.
7. The illumination device according to claim 6, wherein the array of passive optical elements comprises an array of optical concentrating elements.
8. The illumination device according to claim 1, further comprising: a projecting element to receive and project optical radiation emanating from the second ends of the plurality of optical waveguides.
9. The illumination device according to claim 9, wherein the optical focusing elements comprise fiber lenses, wherein each second end comprises a corresponding fiber lens.
10. The illumination device according to claim 1, wherein the array of optical elements comprises an array of reflectors.
11. The illumination device according to claim 10, wherein the array of reflectors comprises an array of reflectors formed in multilayer optical film.
12. The illumination device according to claim 10, wherein the LED dies are disposed proximate to a first surface of said array of reflectors such that light emanating at angles up to 80 degrees as defined relative to a line normal to an emission surface of the LED dies is reflected by the array of reflectors.
13. The illumination device according to claim 1, wherein the interconnect circuit layer has a thickness of from about 25 \u03bcm to about 50 \u03bcm.
14. The illumination device according to claim 1, wherein each LED die is disposed in a recessed aperture of the interconnect circuit layer.
15. The illumination device according to claim 1, wherein the array of optical elements comprises an array of reflectors, wherein each reflector of said array has an entrance aperture and an exit aperture, and wherein an emission surface of each LED die is spaced below said entrance aperture.
16. A vehicular headlight comprising the illumination device according to claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A control device for shades, comprising:
a housing containing at least one spring, with said housing being secured to a surface at a location remote from a shade drive assembly, said shade drive assembly for moving a shade in a first direction when the drive assembly rotates in a first direction and in a second direction when the drive assembly rotates in a second direction, with said shade being positioned by a chain operable with the drive assembly for rotating the drive assembly in one of the first direction or second direction, and with said chain having a stopper attached to the chain, wherein the stopper engages and compresses said at least one spring when a tension force is applied to the chain, and said stopper is prevented from passing through the housing so as to redirect forces applied through the chain away from the shade drive assembly and to said remote location.
2. The device of claim 1, wherein the chain is a continuous loop.
3. The device of claim 1, wherein the chain is a beaded chain and said stopper is larger than other beads of the beaded chain.
4. The device of claim 3 wherein the beaded chain comprises at least a pair of separate beaded chains.
5. The device of claim 4 wherein said at least one spring includes at least one spring for each section of the beaded chain loops.
6. The device of claim 1 wherein said at least one spring is secured within the housing by a retainer.
7. The device of claim 6 further comprising a plurality of spring caps positioned at ends of the at least one spring and adapted to engage the stopper.
8. The device of claim 7 wherein the spring caps include a first end adapted to be received into the spring interior and a second end adapted to contact the stopper.
9. The device of claim 1 wherein the chain passes through the chain control device until the stopper engages the spring and is stop from further movement through the control device.
10. A method of using a roller shade assembly having a drive assembly rotated in a first direction or a second direction by a beaded chain and with ball stoppers attached to the chain, the method comprising the step of:
securing a control device including a body and spring at a location remote from the drive assembly, with said spring being captured within the body of the control device;
passing the beaded chain through apertures of the body, whereby the ball stoppers engage and compresses the spring after the beaded chain is moved in said first or second direction; and
as said spring is compressed, redirecting tension forces applied by the user to the beaded chain to a location away from the sprocket assembly and into the control device.
11. A control device for shades comprising:
a housing containing a spring, with said housing being secured to a surface at a location remote from a shade drive assembly, and with a stopper adapted to engage and compress the spring when force is applied to a chain, with the drive assembly for moving a shade between first and second orientations, and with the chain operable with the drive assembly for rotating the drive assembly until the stopper is blocked from further movement by the control device,
wherein the chain is a beaded chain and said stopper is larger than other beads of the beaded chain.
12. The device of claim 11, wherein the chain is a continuous loop.
13. The device of claim 11 further comprising a plurality of spring caps positioned at ends of the spring and adapted to engage the stopper.
14. The device of claim 13 wherein the spring caps include a first end adapted to be received into the spring interior and a second end adapted to contact the stopper.
15. The device of claim 11 wherein the chain passes through the chain control device until the stopper engages and fully compresses the spring and is stopped from further movement through the control device.
16. The device of claim 11 further comprising a bracket for securing the control device to a window frame surface.
17. The device of claim 11 wherein the control device includes a pair of springs held within the body and with one of the springs being compressed when the shade is in a full open position and the other spring being compressed with the shade is moved into a full closed position.
18. The device of claim 11 wherein the control device includes a plurality of springs to control a pair of adjacent window shades.