CCD Eyepiece for Binoculars

 by Kajnjaps
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Have you ever looked through your binoculars and thought " I wish I could get this on tape" ? Well now you can. In this Instructable I'll show you how to build a cheap CCD eyepiece that will fit most binoculars.
You can use it with any camcorder that has a video input to capture whatever you can get a view on with your binoculars.
 
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Step 1: Materials and tools:

Gather the following, but note nothing is critical. Here and there I'll tel you how you could do it differently.

Tools:

saw, soldering iron, pliers, electric drill with hole saw, sharp knife, 4mm threading tool.

Materials:

- 1 cheapo binoculars (mine cost me +-8 euros, but they are quite good.)
- about 12 cm of PVC tubing , inner diameter must be a larger (1cm is ok) than binocular diameter. (I used 40mm diameter, 1.8 mm wall thickness, thicker is ok too).
- 6 nylon 4mm 12..20 long screws.
- RTV silicone or other adhesive.
- 1 CCD camera module. I used what I could get, which was a module cheap B&W module intended to go in a security camera. It cost me <20 euros. If you have the possibility use a color module with a decent number of lines, as this will give you a better result in the end.

-Some electronic components to power and attach the CCD module. This really depends on the module you can get.
Mine needed 5V, so:
- 78L05 Voltage regulator
- 10uF 16V capacitor
- 10uF 35V capacitor
- 220 ohm resistor
- red 3mm led.
- 1N4148 diode for protection against power-reversal,
- connector to go to a wallwart
- cable with video connector that matches the camcorder/monitor/videorecorder you want to use.
- a piece of perfboard.

optional: AA-size battery holder and switch, if you want a portable power source.

I couldn't find the exact datasheet of the CCD module I bought (they didn't even have it in the shop), but here is a datasheet of one that looks just like it, and had the same connections.

Incidently, you could do this hole thing also with a gutted webcam and use a laptop to record what you see through your binos, while you're on the road.
ITM-M-SC-N.pdf(595x842) 72 KB
mweston says: Aug 22, 2008. 12:22 PM
I did this with a telescope not to long ago, it might be an instructable soon...
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Kajnjaps (author) in reply to mwestonAug 24, 2008. 11:40 PM
Hey, post some images! Is that a color CCD?
mweston in reply to KajnjapsAug 25, 2008. 2:32 PM
It is color, and the lens is zoomed in all the way (to act like the eyepiece that magnifies it for the human eye). It has great color too, looking at stars the blues come out really well, greens and reds are solid too. Its really easy to focus, so the result is always really pleasing! Here are some more photos, some might be blurry because I had to hold the camera with one hand while positioning the... other camera ~P.S. to mount it I used a little piece of rubber that I glued onto the camera and then inserted it into the focusing tube and tightened it down with the eyepiece set screw.
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MadScott says: Aug 19, 2008. 10:54 AM
This is a great basic tutorial for putting video in nearly any optical device from binoculars to microscopes and on to more unusual things like interferometers and spectroscopes -- would be very useful in school demonstrations and the like too.
Kajnjaps (author) in reply to MadScottAug 24, 2008. 11:52 PM
Thanks! About a year ago I mounted a CCD on an Abbe comparator (an instrument to measure the spectral lines of stars, as recorded on a photographic plate). I just put the camera on a stand on the table, so it had to be positioned in front of the eyepiece of the instrument by moving the stand. Always thought there had to be a better way...
rofus says: Aug 20, 2008. 9:46 AM
make something for a memory stick so you can take it on the go
Kajnjaps (author) in reply to rofusAug 24, 2008. 11:46 PM
Easiest way to do that would be to make the tube have screws on both sides, then use it to connect a digital camera directly to the binoculars, Hey! another Instructable!!
smabber says: Aug 23, 2008. 6:19 PM
very nice. ill have to give it a go
Kajnjaps (author) in reply to smabberAug 24, 2008. 11:43 PM
Be sure to use a good quality CCD, with a decent number of lines.
iBurn says: Aug 23, 2008. 2:29 AM
Kajnjaps (author) in reply to iBurnAug 24, 2008. 11:41 PM
Thanks! I guess I'm popular now. Finally, my life has meaning! :-)
mothflavour2 says: Aug 23, 2008. 5:48 PM
totally digging the amber monitor. Nice instructable.
kd1uc says: Aug 22, 2008. 8:47 AM
I love the thinking going into this. Not sure if I would go through all of this because I can buy a ready made pair for about 40 USD and you don't loose one eye. Again love the idea.
Knex Guru says: Aug 19, 2008. 10:07 AM
Coule i put this on a sniper optic?
Kajnjaps (author) in reply to Knex GuruAug 19, 2008. 10:18 AM
Hi Knex Guru, yes, that should work to. It depends a bit in the diameter of the sniper optics you have.
Knex Guru in reply to KajnjapsAug 19, 2008. 10:31 AM
A 4 x 15 about the diameter of a dollar coin.
Kajnjaps (author) in reply to Knex GuruAug 19, 2008. 10:34 AM
can be done, for sure.
Kajnjaps (author) says: Aug 19, 2008. 10:23 AM
Hi everyone, Thanks for the positive feedback. Some more ideas: - you could also do this with a webcam (I already mentioned this in the Instructable, but would really like to see someone do it). - Some of these CCD's are very sensitive to infrared, since used in security cameras. Hence night vision would be possible too. Just build an infrared floodlight. The combination would make some awesome (and cheap) spy gear.
V-Man737 says: Aug 16, 2008. 11:51 PM
Favorited!
PineapplebobTheGreat says: Aug 16, 2008. 7:33 PM
love it.
rimar2000 says: Aug 16, 2008. 3:30 PM
Good idea, thanks. Well done.
finfan7 says: Aug 16, 2008. 3:29 PM
I once got something like this for free from a bank for opening an account. I should find that thing.
lennyb says: Aug 16, 2008. 1:31 PM
this is a very good idea
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