- #1
vinniewryan
- 32
- 0
Hello,
I have a specific application where I need a custom lens designed to focus an image onto a very small cmos image sensor. So far, I've figured out the general angles of the lense but I need it to be a perfect design before money is put into prototyping it. Here's the specs:
The image sensor is 19X19 pixels, and measures 0.9mm X 0.9mm
The distance from the cmos to the lens can be no further than 5mm
the distance from the lens to the object (focal length) must be no further than 10mm
the FOV required is 10mm X 10mm (roughly 120 degrees)
The lens I designed has a steep concave spherical indent on the side pointed towards the object, and the side facing the lens is convex with a slight spherical curve. I built a scaled up version and it works perfectly, I can see about a 1ft X 1ft area from about 4 inches away, I also tested the angles with a laser pointer and it all looks fine and dandy, but when it comes to actually focusing an image, I need to be sure it's going to focus correctly and not come in blurry.
Are there any tips or things I can do to figure this out?
Thanks!
I have a specific application where I need a custom lens designed to focus an image onto a very small cmos image sensor. So far, I've figured out the general angles of the lense but I need it to be a perfect design before money is put into prototyping it. Here's the specs:
The image sensor is 19X19 pixels, and measures 0.9mm X 0.9mm
The distance from the cmos to the lens can be no further than 5mm
the distance from the lens to the object (focal length) must be no further than 10mm
the FOV required is 10mm X 10mm (roughly 120 degrees)
The lens I designed has a steep concave spherical indent on the side pointed towards the object, and the side facing the lens is convex with a slight spherical curve. I built a scaled up version and it works perfectly, I can see about a 1ft X 1ft area from about 4 inches away, I also tested the angles with a laser pointer and it all looks fine and dandy, but when it comes to actually focusing an image, I need to be sure it's going to focus correctly and not come in blurry.
Are there any tips or things I can do to figure this out?
Thanks!