回帖：主要是看人家的操作步骤,想学命令的人请看，十分有用
File > Open (locate saved Workshop 1 lens if it is not open already, digcam20_start.len)
Display > View Lens (accept defaults, click OK, keep window open)
In LDM spreadsheet, select surfaces 1 to Image
Choose Edit > Default Variables, then click in any cell to unselect the range
Right click in each cell and choose Vary for
Thickness of surfaces 1, 4, 6
Glass of surfaces 1, 4, 6
File > Save Lens
Using Quick Analysis tool bar, click…
Quick Spot Diagram (note scale)
Quick Ray Aberration Plot (note scale)
Quick Field Plot (note scales and maximum distortion value)
Analysis > Diffraction > MTF
Freq/Calc Tab: Maximum 68, Increment 17
Graphics tab: Max plot freq 68
Click OK (keep window open, tear off starting MTF graph for later comparison)
Optimization > Automatic Design
Output controls: Click Draw System button
General constraints: Min center thickness 0.8, Min edge thickness 0.5 (others default)
Specific constraints:
Click Insert Specific Constraint
Default display is Optical Definitions, Effective Focal Length (correct choice)
Enter 8.25 for Constraint Target
Click OK.
File > Save Lens As (new name, digcam20_opt.len)
Re-run View Lens window to see new lens picture.
Re-run each of the Quick Analysis windows and note scales.
Re-run the MTF window, compare to tear-off of starting point
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以下直接复制到命令行即可出最终结果
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! Command inputs for Workshop 2-2 (for reference)
!Restore 20 Degree Digital Camera Lens Setup
!FILE > OPEN
RES digcam20_start.len
!Vary all radii curvature by right clicking in LDM and selecting VARY
!HINT: for curvatures highlight all and select vary. Then go back and
!freeze stop surface radius.
CCY S1 0 ; CCY S2 0 ; CCY S4 0 ; CCY S5 0 ; CCY S6 0 ; CCY S7 0
!Vary all thicknesses by same method. Do not select surface with solve since
!varying this surface will delete solve. If mistake, use UNDO or go to
!LENS > SYSTEM DATA > SYSTEM SOLVES and reselect Paraxial Image Solve
THC S1 0 ; THC S2 0 ; THC S3 0 ; THC S4 0 ; THC S5 0 ; THC S6 0
THC S8 0 !Don't forget to vary the image distance which calculates best
!best real-ray focus from paraxial image plane
!Vary glass by highlighting, right clicking, and selecting Vary
GC1 S1 0 ; GC1 S4 0 ; GC1 S6 0
!Optimize OPTIMIZATION > AUTOMATIC DESIGN
AUT
EFL Z1 = 8.25 !Effective Focal Length Constraint
MNT 0.8 !Minimum Center Thickness General Constraint
MNE 0.5 !Minimum Edge Thickness General Constraint
DRA S1..I YES !Draw a picture of lens system at each cycle
GO
!Reanalyze the system. Make sure to "Tear Off" original analysis before
!re-executing to compare optimized system
!Re-execute Drawing
VIE
GO
!Re-execute MTF
MTF
MFR 68
IFR 17
GO
!Re-execute Field (Distortion) Analysis
FIE
GO
!Save Lens FILE > SAVE LENS AS...
SAV digcam20_opt