Tag: Optics & Photonics
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BOBS-PWEE50 Style Sample Holder
A 3D printed sample holder for thin film spectroscopy to measure blood hemoglobin affinity in the PWEE50 style for the BOBS™ machine by Loligo Systems. A small quantity (on the order of microliters) of blood is placed between two layers of Glad Go-Between Freezer Film, this is then stretched over the sample window via the…
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Dobsonian Telescope
This is one of the largest optics projects I’ve ever undertaken. I’ve had a fascination with telescopes for a long time, and as an optics student I finally have the opportunity to build rather than buy. So before we get into the process here are some specs, The base of the design is a carbon…
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Lidar 3D Scanner
This was my final project for my Intro to Photonics class. It’s a lidar 3D scanner, based off an Arduino, a TFT display, a servo, and laser distance sensor. The servo scans through the room recording spherical coordinates, I then convert those measurements to cylindrical, and “unfurl it”. This is by taking into account the…
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Spun Epoxy Mirror
Making parabolic mirrors is hard. Spinning mirrors out of epoxy has been long researched and abandoned. However I’m stubborn so I attempted it regardless. The results were surprisingly high quality for the worst possible manufacturing contexts: pottery wheel, no degassing, not covered or in vacuum, random un-tuned epoxy. Below is a program I wrote to…
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Cat Laser
After Intro to Photonics I repurposed the Lidar to do the reverse. First it used the distance sensor to figure out how far away the wall was and then plotted spirals on the wall using a regular laser. The system switched between a few different shapes and speeds. One time our cat decided he had…
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Prism (3D Printed)
This was my first test in 3d printing optics. The prism was printed on a Form 3 aka a SLA resin printer. As you can see with a bit of polishing I was able to make a working prism. This was advanced when I made a lens.
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Lens (3D Printed)
3D printing lenses provides the ability to make custom lenses quickly, and more importantly cheaply. This lens was printed on a Form 3 following my prism project. It was subsequently sprayed with more resin to take advantage of surface tension and try to smooth things out, then it was put in a lathe and wet…