LED Fiber Illuminator - Revision history

imported>Projects221: /* Methods */

2013-03-21T01:10:23Z

Methods

← Older revision		Revision as of 01:10, 21 March 2013
Line 86:		Line 86:

	Here is the wiring diagram for the 7 LEDs.		Here is the wiring diagram for the 7 LEDs.
	[[File:WireDiagram.JPG\|thumb\|~~200px~~\|center]]		[[File:WireDiagram.JPG\|thumb\|800px\|center]]

	= Results =		= Results =

imported>Projects221: /* Methods */

2013-03-21T01:10:12Z

Methods

← Older revision		Revision as of 01:10, 21 March 2013
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	8- PURPLE		8- PURPLE

			Here is the wiring diagram for the 7 LEDs.
			[[File:WireDiagram.JPG\|thumb\|200px\|center]]

	= Results =		= Results =

imported>Projects221: /* Methods */

2013-03-21T01:04:41Z

Methods

@@ Line 68: / Line 68: @@
 For connectivity to the controller, we chose to use the relatively ubiquitous (and cheap) DB9 connector.  This worked well given we had 7 LED lines and 1 common ground to share among 9 conductors. Here is a diagram of the DB9 Connector and the pin designations.
 [[File:DB9_Picture.jpg|thumb|200px|center]]
 --
 = Results =

imported>Projects221: /* Methods */

2013-03-21T01:00:30Z

Methods

← Older revision		Revision as of 01:00, 21 March 2013
Line 67:		Line 67:

	For connectivity to the controller, we chose to use the relatively ubiquitous (and cheap) DB9 connector. This worked well given we had 7 LED lines and 1 common ground to share among 9 conductors. Here is a diagram of the DB9 Connector and the pin designations.		For connectivity to the controller, we chose to use the relatively ubiquitous (and cheap) DB9 connector. This worked well given we had 7 LED lines and 1 common ground to share among 9 conductors. Here is a diagram of the DB9 Connector and the pin designations.
			[[File:DB9_Picture.jpg\|thumb\|200px\|center]]
			1--

	= Results =		= Results =

imported>Projects221: /* Methods */

2013-03-21T00:59:10Z

Methods

← Older revision		Revision as of 00:59, 21 March 2013
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	[[File:3dprint.JPG\|thumb\|400px\|center\|Illuminator Housing after Printing]]		[[File:3dprint.JPG\|thumb\|400px\|center\|Illuminator Housing after Printing]]
	[[File:3dprocessed.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]		[[File:3dprocessed.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]



	Given the poor specifications on the functionality of the Luxeon lens, we determined that we had to test it prior to committing to printing the enclosure. In fact, it behaved as if it focuses the 7 LED spots to one ~1cm wide region - it's a bit different from a single lens in terms of functionality. This appeared to be designed to couple to a 1cm diameter fiber bundle. Given the fiber we wanted to couple to was more on the order of 0.5mm, this would lead to significant coupling inefficiency. To help address this issue, we added a plano-convex lens to focus the light to a smaller spot. Our preliminary results with a blue LED module allowed us to burn 3mm diameter spots in black paper with about 8W of electrical power into the LEDs.		Given the poor specifications on the functionality of the Luxeon lens, we determined that we had to test it prior to committing to printing the enclosure. In fact, it behaved as if it focuses the 7 LED spots to one ~1cm wide region - it's a bit different from a single lens in terms of functionality. This appeared to be designed to couple to a 1cm diameter fiber bundle. Given the fiber we wanted to couple to was more on the order of 0.5mm, this would lead to significant coupling inefficiency. To help address this issue, we added a plano-convex lens to focus the light to a smaller spot. Our preliminary results with a blue LED module allowed us to burn 3mm diameter spots in black paper with about 8W of electrical power into the LEDs.
Line 68:		Line 66:


	For connectivity to the controller, we chose to use the relatively ubiquitous (and cheap) DB9 connector. This worked well given we had 7 LED lines and 1 common ground to share among 9 conductors.		For connectivity to the controller, we chose to use the relatively ubiquitous (and cheap) DB9 connector. This worked well given we had 7 LED lines and 1 common ground to share among 9 conductors. Here is a diagram of the DB9 Connector and the pin designations.

	= Results =		= Results =

imported>Projects221: /* Conclusions */

2013-03-21T00:57:04Z

Conclusions

← Older revision		Revision as of 00:57, 21 March 2013
Line 92:		Line 92:
	Further refinement of the design should allow for better coupling of the perimeter LEDs into the fiber. The central LED couples successfully, but we feel that there is definite room for improvement (probably through different optics than the Luxeon assembly for the first lens), that will enable better performance. In the meantime, it seems that a reasonable amount of power enters the fiber from any of the LEDs used.		Further refinement of the design should allow for better coupling of the perimeter LEDs into the fiber. The central LED couples successfully, but we feel that there is definite room for improvement (probably through different optics than the Luxeon assembly for the first lens), that will enable better performance. In the meantime, it seems that a reasonable amount of power enters the fiber from any of the LEDs used.

			Here is a video. The LEDs are controlled with an Arduino at about 30mA of current.
	[[File:Illuminator.zip]]		[[File:Illuminator.zip]]

imported>Projects221: /* Conclusions */

2013-03-21T00:56:18Z

Conclusions

← Older revision		Revision as of 00:56, 21 March 2013
Line 91:		Line 91:

	Further refinement of the design should allow for better coupling of the perimeter LEDs into the fiber. The central LED couples successfully, but we feel that there is definite room for improvement (probably through different optics than the Luxeon assembly for the first lens), that will enable better performance. In the meantime, it seems that a reasonable amount of power enters the fiber from any of the LEDs used.		Further refinement of the design should allow for better coupling of the perimeter LEDs into the fiber. The central LED couples successfully, but we feel that there is definite room for improvement (probably through different optics than the Luxeon assembly for the first lens), that will enable better performance. In the meantime, it seems that a reasonable amount of power enters the fiber from any of the LEDs used.

			[[File:Illuminator.zip]]

	= References - Resources and related work =		= References - Resources and related work =

imported>Projects221: /* Methods */

2013-03-21T00:48:10Z

Methods

← Older revision		Revision as of 00:48, 21 March 2013
Line 54:		Line 54:

	Here are a few pictures of the housing immediately after printing and then after processing to remove the support material.		Here are a few pictures of the housing immediately after printing and then after processing to remove the support material.
	[[File:~~3Dprint~~.JPG\|thumb\|400px\|center\|Illuminator Housing after Printing]]		[[File:3dprint.JPG\|thumb\|400px\|center\|Illuminator Housing after Printing]]
	[[File:~~3Dprocessed~~.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]		[[File:3dprocessed.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]

imported>Projects221: /* Methods */

2013-03-21T00:47:24Z

Methods

← Older revision		Revision as of 00:47, 21 March 2013
Line 54:		Line 54:

	Here are a few pictures of the housing immediately after printing and then after processing to remove the support material.		Here are a few pictures of the housing immediately after printing and then after processing to remove the support material.
	[[File:3Dprint.~~jpg~~\|thumb\|400px\|center\|Illuminator Housing after Printing]]		[[File:3Dprint.JPG\|thumb\|400px\|center\|Illuminator Housing after Printing]]
	[[File:3Dprocessed.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]		[[File:3Dprocessed.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]

imported>Projects221: /* Methods */

2013-03-21T00:46:16Z

Methods

← Older revision		Revision as of 00:46, 21 March 2013
Line 54:		Line 54:

	Here are a few pictures of the housing immediately after printing and then after processing to remove the support material.		Here are a few pictures of the housing immediately after printing and then after processing to remove the support material.
			[[File:3Dprint.jpg\|thumb\|400px\|center\|Illuminator Housing after Printing]]
			[[File:3Dprocessed.jpg\|thumb\|400px\|center\|Illuminator Housing after Dissolving Support Material]]