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光學設計軟件zemax源碼:
This DLL models An nular aspheric
surface as described in:
"Annular surfaces in Annular field systems"
By Jose M. SasiAn
Opt. eng. 36 (12) P 3401-3401 December 1997
This surface is essentially An odd aspheric surface with An offset in the aspheric terms.
The sag is given by:
Z = (c*r*r) / (1+(1-((1+k)*c*c*r*r))^ 1/2 ) + a*(r-q)^2 + b*(r-q)^3 + c*(r-q)^4 + ...
Note the terms a, b, c, ... have units of length to the -1, -2, -3, ... power.
zemax源碼:
This DLL models AnAnamorphic aspheric surface.
This surface is essentially An even aspheric surface with different terms for
the x And y directions.
The sag is given by:
Z = ((CX*x*x)+(CY*y*y)) / (1 + sqrt(1-((1+KX)*CX*CX*x*x)-((1+KY)*CY*CY*y*y)))
+ AR*( (1 - AP)*x*x + (1 + AP)*y*y )^2
+ BR*( (1 - BP)*x*x + (1 + BP)*y*y )^3
+ CR*( (1 - CP)*x*x + (1 + CP)*y*y )^4
+ DR*( (1 - DP)*x*x + (1 + DP)*y*y )^5
Note the terms AR, BR, CR, And DR ... have units of length to the -3, -5, -7, And -9 power.
The terms AP, BP, CP, And DP are dimensionless.
The surface is rotationally symmetric only if AP = BP = CP = DP == 0 And CX = CY And KX = KY.
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