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LED ring illuminator for inspection microscope
LED ring lights objects with minimal shadows
Gadget
Creative Commons Attribution Share Alike
Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.
Description
I designed this illuminator to replace an old, beat up, fluorescent ring light on an inspection microscope. It uses a 3.5W, 70 mm OD, chip-on-board LED ring purchased via ebay (2 for $10 including shipping!) and is powered by a 12V wall-wart. The LEDs provide 6500k light so color rendition is good and color coded electronic components can be easily read.
Materials and methods
The LED ring and its companion buck-converter get a little warm in operation so it's probably best to print this with ABS.
Here's the LED ring I used: http://www.ebay.com/itm/272155023035
I included a mini toggle switch and just hard wired it to the power supply because I didn't have a power supply connector handy.
Edit in 3dslash
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