请教各位，评价函数中的delete vignetted的是如何消除渐晕的

Handover2100

请教各位，评价函数中的delete vignetted的是如何消除渐晕的，比如是不是增大某些透镜的尺寸，感谢

佛跳墙

我猜是让所有本来起到截光功能的遮光片不起到作用。光打到透镜有效径内的光线按照正常走势走，有效径外或者超出遮光片尺寸位置处的光不受任何阻挡的走。应该不是增大透镜尺寸，首先强行增大透镜尺寸可能会导致透镜边缘破边，另外消除渐晕意思是不栏光，而不是增大口径让光通过。

Ds12345679

设置了渐晕，镜片直径就变小了，清除了渐晕，镜片直径恢复到光瞳和视场使之产生的原貌，所以楼上说直径没有增加，只是恢复了原貌。但原貌的直径确实比设置了渐晕的要大。

Handover2100

二楼说没有增大，只是让光强行通过，三楼说的意思没有看明白，是减小了渐晕镜片的直径吗

Handover2100

刚才看了一下手册，里面这么写的：
Delete Vignetted If selected, each ray in the merit function will be traced through the system, but if it is vignetted by a surface aperture, if it misses any surface, or if it is total internal reflected at any surface, then the ray is deleted from the merit function. This keeps the total number of rays in the merit function to a minimum. The disadvantage is that if the vignetting changes as the design is optimized, then the merit function may have to be regenerated. It is always a better choice to use the vignetting factors and then use the GQ algorithm than to delete vignetted rays if possible. Vignetting factors can be adjusted, if required, during optimization using SVIG in the merit function.

这貌似就是把渐晕光线删除了，好像也没有对镜片尺寸做操作，也不知道对不对