Forum - GRIN lens specs

Any suggestion for optical compagnies to help for assembly optical components to the main body and able to blacken the edges? Najet.

Grintech didn't answer to my emails for weeks since I asked for a quote. Recently, they quickly answered to a private email of my student that was asking for the same quote and the answer is astonishing to us, but fits the logic of the busyness model of the company mentioned therein: "Thanks a lot for your interest in our products. We would like to inform you that there is an exclusive sales agreement with Inscopix, Palo Alto for all GRINTECH lenses used in the field of non-confocal, single photon epi-fluorescence imaging for neuroscience application in non-human. If your application is connected to that field, we have to forward your request to: Inscopix Inc., 2462 Embarcadero Way, Palo Alto, CA 94303, USA

If your application is not in the field above, GRINTECH will process your request directly. In any case, please send us attached form signed back (scan pdf or jpg by email). Afterwards, we will process your request as soon as possible. Thank you a lot!"

For the time-being I will not deal with Grintech and order via distributors that might still carry (for how long?) their lenses.

Hi Najet,

You really shouldn't need an optical company to help assemble the optical components or to blacken the filter edges. All the optical components can be easily placed into the main body by hand with a pair of forceps. Edge blackening isn't required but is super easy to do. Basically you just put a drop of black enamel/laquer on two sides of the filter and let it dry. I'll try to upload a video of both of these processes to our website this week.

Antsiro,

Thanks for the update. It appears that everyone is getting this same reply which is unfortunate for the scientific community. We are actively working on other solutions at the moment and making good progress.

Hi Brendon,

From which vendor did you get your GRIN lens with 0.25 pitch, 2mm diameter? Najet.

Hello. I would like to be involved in the Grin lens discussions. I work with a number of the suppliers in different markets and have information on around the world availability. I would prefer to answer questions on a personal basis. My email is autsin9017@aol.com. If you wouldn't mind telling me what lab you are from it would be helpful. Grintech yes has given lots of people the same answer but that is not all the information I have. I will start to update more general information here as possible. The UCLA team I am sure is working hard.

Grintech now has a worldwide partnership with Inscopix for these type of lenses there is no reason to even send them any more inquiries.

Hi, I think that even if Grintech is not currently willing to supply lenses, it is good to send them requests so they are aware of the demand. Maybe if the demand keeps growing, they will eventually change their mind.

Is there any alternative to Grintech GRIN lenses already available (any news from NSG, Altechna..)? Have you tried 1.5mm Doric GRIN uncoated lens with the system? Do you think GRADIUM® lenses from Lightpath technology will be good for superficial brain imaging? May be you can make an educated guess what lens is used in Doric's Snap-in Imaging Cannula Model S? Thanks, Mikhail.

Hi, Doric uses a variety of lenses but sources most of the through NSG (GoFoton).