hexa_storm

5 ms·

1.
Laser Scanner with PCB Motor(hackaday.com)
1 points by hexa_storm 4y ago|1 comments
2.
by hexa_storm 4y ago
Open-hardware laser scanner uses PCB motor to rotate polygon
3.
Making PCBs with laser direct imaging and prisms (OSHW)(youtube.com)
1 points by hexa_storm 5y ago|0 comments
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by hexa_storm 7y ago
Thanks for posting this I am currently building a prism scanner and quickly drafted some prior art in this field and did a quick patent analysis see https://hackaday.io/project/21933-open-hardware-fast-high-re...
5.
by hexa_storm 7y ago
claim 1 in US7892474B2... by means of mask exposure ... so prisms brings you around it.
6.
by hexa_storm 7y ago
do you have a link?
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by hexa_storm 7y ago
DLP projection has a lot of advantages, the area projection is one of those. For large area beamers are moved; see moving light technology by prodways https://youtu.be/1AQJaqdrzzE . There is no longer a real difference then
8.
by hexa_storm 7y ago
you can also combine it with optical coherence tomography and use it for detecting eye diseases or laser surgery...
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by hexa_storm 7y ago
rotating mirrors are too fast for laser industry, it requires a very fast switchable laser, like the one developed by european union https://www.razipol.eu/
10.
by hexa_storm 7y ago
the rotating reflective polygon patent is this one US9079355 I think it is even more relevant but somehow it did not get posted. https://patents.google.com/patent/US9079355B2/en
11.
by hexa_storm 7y ago
You have to specify application in a patent. Riken desribed it for 3D printing in 1997 see https://sffsymposium.engr.utexas.edu/Manuscripts/1997/1997-2... . but did not specify the use of laser diode as it was quit
12.
by hexa_storm 7y ago
they use glass lenses and infrared, cross scan error must be quite significant due to long separation distance between polygon and substrate.
13.
by hexa_storm 7y ago
You have to specify application in a patent. Riken desribed it for 3D printing in 1997 see https://sffsymposium.engr.utexas.edu/Manuscripts/1997/1997-2... but did not specify the use of laser diode as it was quite
14.
by hexa_storm 7y ago
the rotating reflective polygon patent is this one https://patentimages.storage.googleapis.com/29/68/46/da50635... I think it is even more relevant but somehow it did not get posted.
15.
by hexa_storm 7y ago
true it is a nice machine.. but laser bundles have advantages. You can direct other wavelengths, sinter powders and get to much smaller features. All these LCD printer, do show a pixel size but not a real spec or accuracy. If you go really
16.
by hexa_storm 7y ago
It's true... if I wasn't forced to avoid the IP.. It would have been unlikely I would have made such an effort or this thing build.
17.
by hexa_storm 7y ago
This is how it prints on UV paper, https://cdn.hackaday.io/images/1013221548797737200.jpg . This is the calibration data recorded by imaging with the camera directly on a CMOS chip. You can count pixels.. this is what
18.
by hexa_storm 7y ago
expensive is a matter of taste. The envisiontec 3SP costs well over 5K euros and can go up to 100K. You can only get a a price if you ask for a quote. Carbon 3D does not sell their printers you have to lease them. Formlabs does sell you a p
19.
by hexa_storm 7y ago
That is indeed.. how i decided to brand it and this seems working. In reality both systems have different optical properties; this does matter if you push them to the limits. Galvanometers are slow, require more calibration. Rotating devic
20.
by hexa_storm 7y ago
Of course, what’s worse than a weak start is simply not starting at all. Moreover, if you’ve publicly disclosed your invention, then you have only a one-year grace period to apply for a patent. You forfeit your patent rights if you fail to
21.
by hexa_storm 7y ago
patents are expensive and you don't know the results.. Patent in my name is here https://patentimages.storage.googleapis.com/43/72/4e/1ee7792... .. but is for a plurality of sources. So I avoid my patent
22.
by hexa_storm 7y ago
should have named it differently; I use a laser scanner with a prism instead of a mirror. A detailed description is here; https://reprap.org/wiki/Transparent_Polygon_Scanning
23.
by hexa_storm 7y ago
There is a blog here https://hackaday.io/project/21933-open-hardware-transparent-... also provides all the link to github files. Design are made in Freecad, Kicad, C++ and Python. My main focus is on developing prior a
24.
Continuous 3D Printing Possible With Transparent Polygon Scanning?(fabbaloo.com)
90 points by hexa_storm 7y ago|68 comments