Sources of Flare
My custom designed lens suffered from a huge veiling flare problem. It was so severe that it was visible even when there were no light sources in front of the lens. I traced the problem to the 4 areas illuminated in the picture above.
The people I hired to handle this part just didn't pay enough attention to detail. I asked for edge blackening, but that was not done. I was also a bit concerned about the thick cylindrical area on the inside of stop, but I assumed that they knew what they were doing. In engineering, it is often impractical to test and iterate on prototypes until every problem is eliminated. The initial design often needs to be over designed in the easy areas to limit the number of things that can go wrong later. This was clearly not applied here.
Sunnyvale, CA
Sources of Flare
My custom designed lens suffered from a huge veiling flare problem. It was so severe that it was visible even when there were no light sources in front of the lens. I traced the problem to the 4 areas illuminated in the picture above.
The people I hired to handle this part just didn't pay enough attention to detail. I asked for edge blackening, but that was not done. I was also a bit concerned about the thick cylindrical area on the inside of stop, but I assumed that they knew what they were doing. In engineering, it is often impractical to test and iterate on prototypes until every problem is eliminated. The initial design often needs to be over designed in the easy areas to limit the number of things that can go wrong later. This was clearly not applied here.
Sunnyvale, CA