energyi
Posts: 167
Joined: Tue Mar 24, 2015 9:39 pm

IR filter removal from new RPi camera

Sat May 23, 2020 10:26 pm

Anyone successful in removing the IR filter from the new Raspberry Pi HQ Camera for Raspberry?

Trying to do some telescope usage. Thanks in advance for any successful discussions.

energyi
energyi


energyi
Posts: 167
Joined: Tue Mar 24, 2015 9:39 pm

Re: IR filter removal from new RPi camera

Sun May 24, 2020 5:13 am

Perfect, thanks!
energyi

xkubazz
Posts: 38
Joined: Sun May 10, 2020 3:18 pm

Re: IR filter removal from new RPi camera

Fri Jun 05, 2020 12:58 pm

Did anyone actually follow this procedure so far?

I'm wondering how tough is bare sensor's surface and if cleaning it is possible without incurring damage.I live in very dusty area and need to clean sensors in my cameras at least biweekly, even if I'm very careful while switching lenses.
Astrophotography with Raspberry Pi HQ Camera
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jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 28358
Joined: Sat Jul 30, 2011 7:41 pm

Re: IR filter removal from new RPi camera

Fri Jun 05, 2020 1:12 pm

xkubazz wrote:
Fri Jun 05, 2020 12:58 pm
Did anyone actually follow this procedure so far?

I'm wondering how tough is bare sensor's surface and if cleaning it is possible without incurring damage.I live in very dusty area and need to clean sensors in my cameras at least biweekly, even if I'm very careful while switching lenses.
Air duster would be fine. Or add a clear cover to the sensor (OHP film is apparently good for that)
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cpixip
Posts: 44
Joined: Mon May 01, 2017 7:56 am

Re: IR filter removal from new RPi camera

Thu Jul 09, 2020 3:28 pm

well, I tried to follow the procedure but I hit a stop at the point

3) Lift up the board and place it down on a very clean surface.


of the procedure.

It seems that both of my HQCams have the main board glued boldly to the black metal housing. No reasonable amount of force allowed me to separate the board from the metal housing. How to proceed? Any ideas? Both cameras were purchased through offical resellers based in Germany.

billgs
Posts: 7
Joined: Fri May 22, 2020 8:57 pm

Re: IR filter removal from new RPi camera

Fri Jul 10, 2020 2:03 pm

My main board seemed to be firmly attached to the housing but
a small screwdriver placed as per the picture and gently rotated
was enough to part the two pieces.
[img]F:\DCIM\118_PANA\P1180133a.jpg
[/img]

Regarding protection of the sensor after filter removal, I measured
the filter to be 9x9x1.1 mm and I found that a near Cambridge
manufacturer of optical items offer an anti reflection coated
10x10x1.1 mm window for £6.60 inc vat. As might have been expected,
a one-off 9x9 modification of this, plus delivery, would be
expensive (about £50). 10 off prices woud be £9 plus delivery.
I won't be going this way.

I will try OHP film in the main housing

billgs
Posts: 7
Joined: Fri May 22, 2020 8:57 pm

Re: IR filter removal from new RPi camera

Fri Jul 10, 2020 3:00 pm

Repeat of my previous post with the missing picture.
My main board seemed to be firmly attached to the housing but
a small screwdriver placed as per the picture and gently rotated
was enough to part the two pieces.
Attachments
P1180133a.jpg
P1180133a.jpg (112.07 KiB) Viewed 1659 times

cpixip
Posts: 44
Joined: Mon May 01, 2017 7:56 am

Re: IR filter removal from new RPi camera

Fri Jul 10, 2020 3:23 pm

billgs wrote:
Fri Jul 10, 2020 3:00 pm
Repeat of my previous post with the missing picture.
My main board seemed to be firmly attached to the housing but
a small screwdriver placed as per the picture and gently rotated
was enough to part the two pieces.

- thank you very much. This did the trick!
IR filter HQCam.jpeg
IR filter HQCam.jpeg (40.32 KiB) Viewed 1641 times
Actually, very easy that way. I managed to get the IR-filter off without breaking it, so it might even turn out to be a reversible procedure. The screwdriver hint plus the place to apply it was very helpful. Thanks!

andred14
Posts: 8
Joined: Mon Jun 22, 2020 1:17 am

Re: IR filter removal from new RPi camera

Thu Jul 16, 2020 10:49 pm

cpixip wrote:
Fri Jul 10, 2020 3:23 pm
billgs wrote:
Fri Jul 10, 2020 3:00 pm
Repeat of my previous post with the missing picture.
My main board seemed to be firmly attached to the housing but
a small screwdriver placed as per the picture and gently rotated
was enough to part the two pieces.

- thank you very much. This did the trick!

IR filter HQCam.jpeg

Actually, very easy that way. I managed to get the IR-filter off without breaking it, so it might even turn out to be a reversible procedure. The screwdriver hint plus the place to apply it was very helpful. Thanks!
Nice work :) Do you think it would be possible to add a visible light filter on top of the sensor once the IR filter is removed? Hoping to do this and capture some high FPS night video using raspiraw

dabateman
Posts: 31
Joined: Tue Jul 07, 2020 1:51 pm

Re: IR filter removal from new RPi camera

Fri Jul 17, 2020 7:13 am

Depending on your lens there is a lot of room there for many different options.

You can even tape a ZWB2 filter inside the stock unmodified camera to grab a UV image.

The HQ is not very sensitive to UV though. My full spectrum modified module can just barely see to 375nm. I am saddened by this. But the stock camera has nice UV/vis capabilities using just 365nm light sources. So some options.

For IR you will need to pop that CM500 IR blocking filter. But otherwise the camera can see 380nm to 700nm.

zizumara
Posts: 3
Joined: Sat Jan 12, 2019 12:36 am

Re: IR filter removal from new RPi camera

Tue Feb 09, 2021 2:09 am

Why remove the camera from the board? The filter is attached to the back of the lens assembly. I have a 12MP HQ camera from Arducam and I removed the IR filter by simply unscrewing the lens from the board, then prying the filter out of the lens assembly. The filter I removed looks just like the one in the picture posted by cpixip.

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