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Topics - JCima

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Optics / Grin lens 1,5 Working Distance
« on: October 11, 2017, 09:40:49 AM »
Hi all,
I have read that Go Photon is providing custom GRIN lenses with 1.5mm working distance. Has anyone tried them?? Do you know they FOV they have?? If anyone in Europe is interested on trying them, we can buy together so we can share costs.

Regards
Javier

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System Assembly Troubleshooting / Printing files of the Housing parts
« on: December 15, 2016, 03:02:16 PM »
Hi all,

I have been looking for the printing files of the housing parts in the following link "https://github.com/daharoni/Miniscope_Machined_Parts", but I only see the .sldprt files. Do you have the files in .stl?

Also, did anyone in Europe try to make them? Do you know of any company (in Europe) able to make this parts ? more or less, how much could it be?

Thanks for your help
Javier

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Optics / grin lenses working distance
« on: November 30, 2016, 10:39:32 AM »
Hi all!

I am working with GRIN lenses and I have some questions about them. I have read the Grintech datasheet and it says that the GT-IFRL-200-inf-50-NC lenses have a infinity Working Distance (WD), while for example the GT-IFRL-200-005-50-NC is 5mm. However you say the WD you are using is from 0 to 0.2mm, is it because the longer the WD the higher the scattering and the lower the image quality? if this is the case, why don't you use a lens with a lower WD?, is the pitch different?
Also when using a 0.25 pitch grin lens, all the rays come out from the lens parallel and the achromatic lens create the image in the sensor. How does the sliding the sensor up and down shift the focal plane, is not the focal plane determined by the WD of the grin lens??
Thanks for your help!!

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