FLIR E4 - E8 useful for PCBs

[Ivan7enych]

How do you remove the holder?  It doesn't look like there is much to grab on to.

External part is 6mm height. I can make longer, may be 10mm to make it easier to handle. But not too long to prevent vignetting of the image.

This would be the casing and nut right?

It has 2 parts - the ring with external thread M16x0.75mm, and the casing. I store it in a plastic box which I receive with the lens.

I still don't know the price of shipping from Russia to US or other countries, let me find it out.

At weekends I can make 10 items, I hope it will be enough for you guys. 

[Ivan7enych]

It took a bit longer, than I expected. I've made the lens holders a bit longer and added knurling on outer face. Last picture is the result, and 4 pictures are from the middle of the process.

If somebody wants that lens holder, please PM me your address, I'll find out the shipping cost and reply you.

[digsys]

If somebody wants that lens holder, please PM me your address, I'll find out the shipping cost and reply you. 

They look very nice, I'll definitely grab a couple (send you details tonight). I hope you're covering costs and at least
some labour. We appreciate you doing this for us dummies :-)
Would you consider also doing a version for 20mm lenses? Any issues with optics? I'd take 2 of those as well.

[Ivan7enych]

Let me summarize,

Marphy - sent 3 pieces.
hs3 - sent 1
Sparky - sent 1
edavid - sent 1

tjb1 - reserved 3-4
digsys - reserved 2

I see, all 11 items are reserved now.

Would you consider also doing a version for 20mm lenses? Any issues with optics? I'd take 2 of those as well.

I think on next weekends I'll have free time to make it.

[digsys]

   ...  I think on next weekends I'll have free time to make it. 

PM sent. Thanks for making the offer.

[Ivan7enych]

digsys
The 2 casings for 20mm lens are ready. I can send it on monday.

tjb1 doesn't respond to my messages, so I think 3 holders for 12mm lens are available for somebody else.

[DJ]

Message sent

[Kay]

Hi,


I sent the lens adjuster tool  (http://www.thingiverse.com/thing:197580) to a CNC house in China, they are asking if the measurements are in mm or inch?  if anyone can advise, thanks
by the way, they are asking 35 USD / PCS for CNC, polished.


 

[tjb1]

Hi,


I sent the lens adjuster tool  (http://www.thingiverse.com/thing:197580) to a CNC house in China, they are asking if the measurements are in mm or inch?  if anyone can advise, thanks
by the way, they are asking 35 USD / PCS for CNC, polished.

I would assume MM since most of the printers/slicers use MM but it would be fairly obvious as to which it is.

[Fraser]

@3Roomlab,

I can only comment on my method of selecting a close-up lens.... no maths needed 

As I previously stated in another thread, I first came across the use of a biconvex close-up lens when repairing video presenters (document cameras) a couple of years ago. The cameras were standard Sony modules that could not focus close enough for the document imaging applications. The manufacturer solved this by fitting a removable No.2 Close-up Lens. The Focal Length (FL) of that lens was the perfect distance for the camera to focus correctly on a document 40cm away. This was effectively providing the camera with compensation for its long sightedness.... a bit like fitting reading glasses to it ! I tried that as well.....a set of cheap reading glasses had the same effect as the No.2 CU lens.

I used that example to track down suitable lenses for my Fire fighting Thermal cameras. These are fixed focus and designed for distance working of more than 2m. I found ZnSe and Gallium Arsenide lenses would work at the required thermal camera wavelength, with  ZnSe more common, and with higher transmittance figures. Fortunately CO2 laser cutting machines use such ZnSe lenses with nice short focal lengths....perfect for close up work on PCB's. At $30 delivered they were affordable so I bought some to play with. On arrival I placed a 20mm diameter 100mm FL ZnSE lens in front of my PM695 cameras lens and noted the excellent performance. I then tried it in front of the ARGUS 2 fire fighters camera and its performed equally as well. I found that the closer to the objective lens that you could place it, the better. You have to also consider the dimensions and FOV of the objective. If the ZnSe lens is moved too far away from the objective, the FOV will exceed the lens diameter with negative effects on the image produced.

When I bought my E4 I just placed my 100mm FL ZnSe lens in front of the E4 lens and all worked well. I shared the news with this forum and I remain impressed with the excellent lens holders that have been designed by clever people and now the aluminium design that we see here.... Superb ! I have been using 19mm and 20mm diameter lenses to ensure I didn't have FOV issues but as has been shown in this thread, a 12mm lens is possible and far more compact that my lens holders.   

There may be some maths that may be applied to the use of these lenses but I just did it by test. The No.2 lens on the document camera was the same diameter as the objective and around 5mm from it, so Sony seemed to think closer is better 

Aurora

[H.O]

Hi,

I wanted to thank Ivan for the link to the 12mm lens and for showing his lensholder which I basically copied with some minor modifications:
I made it out of black plastic instead of aluminium and made it so that the lens is a somewhat tight pressfit into the housing avoiding the need for the keeper-ring.

The difference with/without the additional lens is quite remarkable as can be seen in the attached, thermal only, images. They show a couple of 0805 resistors on a piece of strip board. The distance from the fase of the E4 to the stripboard was ~80mm. Without the lens you can see that "there's heat" coming from the board but with the lens it's quite possible to distinguish one resistor from the other (yes, they are alternating values).

Thanks Ivan and everyone else contributing to the overall E4 experience!