LensForge

Version history

LensForge 1.2.16 (January 28, 2010)

• Bug fixes:
  • Would crash while quitting for some files.

LensForge 1.2.15 (January 25, 2010)

• Bug fixes:
  • Some files would not open after recent release.
  • Ray aiming problems.

LensForge 1.2.14 (January 17, 2010)

• Improvements:
  • "Scale Lens" tool.
  • Open windows are restored when the document is re-opened.
  • Added "Close Document" menu item to close all windows.
• Bug fixes:
  • Changing surface type of mirror, e.g., from standard to asphere, would turn the mirror transparent.

LensForge 1.2.11 (November 10, 2009)

• Improvements:
  • Setting pupil to "float by stop size" now compensates for pupil aberration.

LensForge 1.2.10 (November 9, 2009)

• Improvements:
  • Better handling of vector images (PDF/EPS) on canvas of planar view.
• Bug fixes:
  • Float by stop size gave incorrect pupil size if aperture was not in air.

LensForge 1.2.9 (October 26, 2009)

• Improvements:
  • Intensity fan sum now optionally uses field weights.
• Bug fixes:
  • Intensity fan sum would give zero for some configurations.

LensForge 1.2.8 (October 22, 2009)

• Improvements:
  • Merit function table and optimizer now display a summary of meritoid values.
  • LensForge files remember canvas settings of open layout views.
• Bug fixes:
  • Ray fan could have spurious offsets to pupil coordinate.

LensForge 1.2.7 (October 8, 2009)

• Improvements:
  • On planar layout, glass is now drawn with specified alpha.
  • LensForge files remember canvas settings of open layout views.

LensForge 1.2.6 (October 4, 2009)

• Improvements:
  • Data-entry mode added to source and parameter tables.
  • Spot diagram Airy disk plotted per wave and per field.
  • Spot diagram Airy disk takes into account surface tilt.
• Bug fixes:
  • In multiplot, scroll-wheel zoom used coordinate on the first plot instead of the plot the mouse was over.

LensForge 1.2.5 (October 4, 2009)

• Improvements:
  • Option windows brought to front when their main window is.
  • Multiplot is on per wave basis if single field selected.
• Bug fixes:
  • None.

LensForge 1.2.4 (August 22, 2009)

• Bug fixes:
  • Aperture decenters were not read from file.
  • Planar layout did not draw highly decentered apertures correctly.

LensForge 1.2.3 (July 29, 2009)

• Improvements:
  • You can add a reference ellipse to the spot diagram.
  • Option windows are now no longer floating.
  • Merit function plotter now lets you set construction variable based on selected point.
• Bug fixes:
  • Centroid subtraction on spot diagram was in error for units other than mm.
  • Crash when using Optimizer with Merit plot window open.
  • Polychromatic RMS Spot Size meritoid was scaled wrongly.
  • Ray fan abscissa could have axes -1.5 to +1, instead of -1 to +1.

LensForge 1.2.2 (July 24, 2009)

• Improvement:
  • Intensity fan.

LensForge 1.2.1 (July 13, 2009)

• Bug fixes:
  • Index plotter window, once closed, would not work if re-opened.

LensForge 1.2.0 (July 6, 2009)

• Improvements:
  • Paraxial XY (ideal cylinder) surface.
  • Ray trace meritoid.
  • Ray fan and Spot diagram centroid subtraction on per-field basis.
• Bug fixes:
  • Paraxial surface broken recently.
  • Opening a second lens caused the first to think it needed to be saved.

LensForge 1.1.25 (June 18, 2009)

• Improvements:
  • Energy capture plot.
  • Documentation for cutoff radial scan.
• Bug fixes:
  • Problems with paraxial trace mode.
  • Cutoff radial scan plot had axis troubles.
  • Polynomial surface now draws respecting its size parameters.

LensForge 1.1.24 (May 27, 2009)

• Bug fix:
  • Polynomial surface was broken by previous update.

LensForge 1.1.23 (May 20, 2009)

• Improvements:
  • New surfaces: Biconic, Grating, Kinoform, Toric.
  • RMS Spot or OPD meritoids may be polychromatic.
  • "Auto add" for quicker entry of new lens designs.
  • Various GUI improvements.
  • Tool to remove glass pickups.
  • ZEMAX import gets glasses from AGF files in same directory.
• Bug fixes:
  • Instabilities on PowerPC computers.
  • Encircled energy plot problems on some computers.
  • Closing merit function editor window could crash.
  • Back focal length incorrect for lens with finite object distance.

LensForge 1.1.22 (April 29, 2009)

• Improvements:
  • Button on sources window to set waves to F,d,C set.
  • Pop-up menu to zero selected parameter values.
  • Improved handling of stop deletion.
  • Improved import of ZEMAX^® files.
  • Sliders "Set as nominal" button.
  • Sliders remember delta values per parameter type.
  • More explicit warning information.
  • Model glass handles Sweatt model.
  • Index fitter displays functional form.
• Bug fixes:
  • Merit functions failed to connect when files re-opened.
  • Ray colors did not update when using color by wave.
  • Fixed problem with rectangular aperture.
  • Fixed problem with selection of dispersion relation in index fitter.

LensForge 1.1.21 (February 5, 2009)

• Improvements:
  • Glass solve popup menu in surface data table.
  • Double-click model glasses on surface data table to edit.
  • Conversion of glasses to model glasses
  • Dynamic model glass name can use standard 6-digit format.
  • Curvature pickup scale "negate" button.
  • Tools to remove all variables and remove all solves.
• Bug fixes:
  • Model glass: setting unit index with nonzero Abbe would crash.
  • Model glass: variable flags were not saved to file.
  • Having more than one unknown glass crashed under Mac OS X 10.4.
  • Fixed calibration curve error in FGOTF diagnostic.

LensForge 1.1.20 (January 23, 2009)

• Improvements:
  • Trace listing tool.
  • "Close all but front window" command.

LensForge 1.1.19 (January 16, 2009)

• Improvements:
  • More tools in the toolbars.
  • Contextual menu for the surface data editor.
  • Huygens calculator now uses all CPU cores.
• Bug fixes:
  • Closing spot diagram could crash.
  • Invalid parameter entry could crash.

LensForge 1.1.18 (January 2, 2009)

• Improvements:
  • Huygens PSF window, with matrix export.
  • PSF matrix export from Fourier & Huygens OTF & LSF thumbnails.
  • Diffraction LSF by FFT method.
  • DXF export.
• Bug fixes:
  • Huygens calculation error for catadioptric systems.
  • Differential ray tracing bug.

LensForge 1.1.17 (December 17, 2008)

• Improvements:
  • Huygens-Fresnel calculation of diffraction PSF, LSF, and MTF.
  • Diffraction MTF by FFT method.
  • Documentation improvements.
  • Test ray transfer matrix may now be listed in more bases.
• Bug fixes:
  • Field and wave color changes did not appear immediately.
  • Corrected calculation of focal length for systems with tilted image plane.

LensForge 1.1.16 (March 25, 2008)

• Improvements:
  • Image browse button added to Canvas feature.
• Bug fixes:
  • Prescription listing updated prematurely during lens rebuild.

LensForge 1.1.15 (March 17, 2008)

• Improvements:
  • Added point of interest display to Index Fitter, Index Plotter, and Merit Plotter.

LensForge 1.1.14 (February 28, 2008)

• Improvements:
  • Added multiplot option to spot diagram.
  • Added online help for spot diagram.
  • Test ray (planar and solid view) listing improved.
• Bug fixes:
  • Airy disk was invisible on spot diagram.
  • Some paraxial calculations broken by 1.1.10.

LensForge 1.1.13 (February 26, 2008)

• Improvements:
  • Added schott-10-10-2007b catalog to glass library (includes LITHOSIL-Q fused silica).
• Bug fixes:
  • Seidel aberration calculation corrected for refractive surfaces after mirrors.
  • Conrady chromatic aberration coefficients implemented for catadioptric systems.

LensForge 1.1.12 (February 24, 2008)

• Bug fixes:
  • Seidel aberration calculation now includes conic constant for standard surface (formerly only for aspheres).

LensForge 1.1.11 (February 23, 2008)

• Bug fixes:
  • Seidel aberration calculation now handles mirrors.
  • Aberration calculation works when there is a surface other than the image surface at the paraxial image plane.
  • File name in listings now updates with Save As...
  • Change from MIRROR to glass name no longer needs to pass through intermediate state of a blank name.

LensForge 1.1.10 (February 15, 2008)

• Improvements:
  • Spot diagram can now plot ray direction versus position.
  • Encircled or ensquared energy: spiral pattern more uniform.
  • Encircled or ensquared energy: subtract spot centroid option.
  • Radial fans (+x, -x, +y and -y) for layout views.
  • Improvements to OSLO file import.
  • Better solid view shapes for apertured surfaces.
  • View zooming "undo" now independent of lens change undo.
  • View browsing buttons on toolbars for solid and planar view.

LensForge 1.1.9 (January 14, 2008)

• Bug fixes:
  • Undo would crash if Merit Plot window was open.
• Improvements:
  • Canvas feature: image file may be dragged to planar view itself.
  • Canvas feature: last image calibration is remembered.

LensForge 1.1.8 (November 14, 2007)

• New features:
  • Reads CODE V SEQ files with private glasses.

LensForge 1.1.7 (October 15, 2007)

• Bug fixes:
  • Closing then re-opening index fitter would crash.
  • Initial display in planar view was delayed.

LensForge 1.1.6 (October 5, 2007)

• New features:
  • Code V import.
  • Index fitting to define new glasses.
  • Multiplot feature.

LensForge 1.1.5 (September 17, 2007)

• New features:
  • Polynomial surface.
  • Parameter import and export:
    • Drag and drop of text or files
    • Copy and paste
  • Test ray now displays after-trace quantities:
    • Position
    • Momentum
    • Orientation
    • Transfer matrix
  • Image preview display on the lens catalog browser.
  • Improvements to solid view:
    • Rotate about the last selected surface
    • "Zoom to Fit" on last selected surface
    • Rotation to axis alignment is animated
    • Zoom is animated
    • Filled or wire frame display
    • "One click" summoning of Surfaces window
  • Wavelength specified in nanometers.
  • Added value display to merit function plot.

• Bug fixes:
  • Parameter solves were not saved to lfg file.
  • Crash when merit function plot window closed.
  • "Include focus" checkbox on optimizer window did not work.
  • Changes to circular obscuration did not immediately register.

LensForge 1.1.4 (July 29, 2007)

• New features:
  • Vignetting factors.
  • Export graph data to other programs.
  • Graphs display selected data values.
  • Transpose any graph axes.
  • Automatic updates.

LensForge 1.1.3 (May 21, 2007)

• Bug fixes:
  • OPD calculation fixed for infinite conjugate off-axis case.
  • Fixed crash when switching to "total thickness" solve.

LensForge 1.1.2 (February 4, 2007)

• Bug fixes:
  • Asphere ray tracing algorithm improved for high field angles.
  • Sliders "delta" parameter remembered through undo.
  • Fixed the "using an index of refraction as a glass name" feature.

LensForge 1.1.1 (January 31, 2007)

• Bug fixes:
  • Optimization no longer always generates an exception.
  • Merit functions now save residual filter in file.
  • Meritoid initial values improved.

LensForge 1.1 (January 29, 2007)

• New features:
  • Improved built-in help.
  • Can move surfaces graphically.
  • Merit functions.
  • Optimization.
  • Plotting merit functions.
  • OPD plot can use length units.
  • Seidel aberrations now include aspheric coefficients.
• Bug fixes:
  • Airy disk on spot diagram works in object-referred mode.
  • Better intelligence to remove glass conflicts.
  • Improved responsiveness of parameter pickup dialog.
  • OPD for image in refracting media.

LensForge 1.0.4 (August 15, 2006)

• New features:
  • Distortion graph.
  • Field curvature graph.
  • Offense against sine condition (OSC') graph.
  • Afocal analysis mode introduced.
  • Telecentric object mode.
  • Option to refer analysis results to object coordinates.
  • Sliders window now lets you modify nominal value.
  • Planar layout view generalized to non-axisymmetric systems.
• Bug fix:
  • Focal length and exit pupil location for tilted systems.
  • Improvements to solves.
  • Coordinate break rotations changed to ZEMAX sign convention.
• Catalog update:
  • Comes with the new version of the Edmund Optics stock lens catalog.

LensForge 1.0.3 (July 18, 2006)

• New features:
  • Geometrical OTF plot.
  • Geometrical thru-focus OTF plot.
  • Geometrical encircled energy plot.
  • Sliders.
  • Command to flip (reverse order) surfaces.
  • Command to close all open option panels.
• Added plastic materials to the built-in library.

LensForge 1.0.2 (June 3, 2006)

• Marginal ray solves that are independent of the pupil zone are now active before the stop.
• Visual feedback for inconsistent solve requests (like chief ray solves before the stop).
• Some inaccuracies in the solves are fixed.
• Added Hikari glass catalog to the built-in library.

LensForge 1.0.1 (May 30, 2006)

• Implementation of Paraxial image height field specification.
• Glasses used in the design are now saved in the lens file to make the file self-contained.
• Added Thorlabs stock lens catalog.

LensForge 1.0 (May 26, 2006)

• Initial release.