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Optics / Lenses / Filters Questions
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?
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The description of the image as turning "grey" is hard to visualize. The components you describe are standard imaging and lighting products and this illumination technique is common. Can you provide more information? Knowing the camera model, light source color and the object(s) being illuminated would help our understanding. Feel free to respond here or to my email address.
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.