Water droplets at bubble

[adrian116 0]

Dear all,

 

I have a waterproof dome camera which is installed outdoor,

and the lens is pointed vertically.

 

The problem is that when at rainy day or heavy fog weather, water droplet

and points will adhere to the endpoint of bubble, it scatter the image.

 

Do you guys have any idea about this issue. Thanks very much.

[Soundy 1]

You could try creating a bead of silicone on the surface of the bubble, surrounding the lens area, so it will stop the water running down the bubble and force it to drip off sooner.

 

I've also had success with domes in direct weather exposure, by giving them a treatment of Rain-X or similar product.

[adrian116 0]

thank for reply and suggestion.

 

For silicone method:

Under extreme weather, the rain droplets may not adhere to the bubble from up to down. As the camera is mounted on bridge, i am afraid that the strong wind will make the rain droplets adhere to the bubble directly.

 

For Rain-X method:

How long can the repelling effect of rain-X last for? As the maintenance period should not be too frequently. I am afraid the repelling effect may fade out very soon.

 

Thanks for your help.

[Soundy 1]

Well, neither solution is 100%, obviously... Rain-X claims, I think 90 days between re-applications, but that's on a car windshield where it sees a lot more raid, as well as wipers, so it's being worn down a lot faster. You'd probably get a good 6 months before it would need to be "touched up" in this case.

 

Ultimately though, if blowing rain is a major issue, you may need to look at either protecting the bubble better, say with some kind of shroud... or switch out the dome for an enclosure with its own wiper... something similar to this, for example: http://www.avexcctv.com/product_details.php?category_id=8&item_id=28

[WarrenM 0]

Well that little wiper is just too cool.... can you substitute a machine gun for the wiper factory direct