ASK THE EXPERTS
More Answers From Yoshigi Nakata
President CEO at Nacacue Corporation
- Email: yoshigi_nakata [at] nacacue [dot] co.jp
- Tel: 81 759 344 178
We have a lens and a motor with image stabilisation features. I want to develop a system for mobile application. If I choose one image sensor ( for eg from Sony) , is it always mandatory to have Frame grabber or can I opt for GigE Vision. What is the basics of selection of image sensor or frame grabber?
I think you need a frame grabber or some embedded curcuits having frame grabbing function before you bring the image to any interfaces like GigE . As for the basics of selection of image sensor, in general, it has to fit to your optical requrements, image size, resolution, color, speed, etc.
I was testing a telecentric lens that allowed a fiber optic light source to be inserted in its side. When testing the lens with the fiber optic light source my image got washed out with a grey color, adjusting gain and offset did not help. When I used an external light source with the same lens and camera I got a normal image. The supplier was unable to tell me why my image turned grey with this light. They were able to tell me the lens, camera, fiber optic cable and light source are compatible. Has anyone else experienced this issue and have information on what caused it/how to correct it?
What is your target object to be detected? If it is the plane mirror surface, it might happen. Illumination inserted in the lens side become parallel ray to the object. If the object surface is plane and mirror under the parallel ray illumination, object image has 100% illumination intensity to the camera sensor. You can change the angle of object against the camera axis as a trial if it's possibel. then if you see some difference, it might be the part of the cause.