幫助中關(guān)于
光柵的計算幫助時這樣寫的
zE NlL Radial Polynomial Grating. The radial polynomial grating type is essentially a DOE defined by a rotationally symmetric phase profile. The phase profile is given by the following 20th order equation:[/td][/tr][/table]
ZM%z"hO9R [table][tr][td][/td][td=1,1,100%]
Y4|g^>{<ni IW'2+EGc The phase computed by the above equation is in lens units. The derivative of the phase gives the grating period at any point on the surface. The second order term (coefficient C
1) gives the basic focal length of the DOE, with the focal length equal to:
R7 *ek_ zx{O/v
KG 這里是把光柵相位當做一個單獨的
光學屬性,那徑向半徑r是怎么帶入計算的,是把這個屬性設(shè)置在某一個面上后再自動獲取這個面上的徑向半徑嗎
}X`jhsqT 如果是這樣,那如果設(shè)置在導入的
三維文件的面上時,
系統(tǒng)又是怎么獲取徑向半徑來計算的