TracePro Overview q'~?azg:  
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Like LightTools, TracePro is an solid-modeling based illumination modeling program with a Windows-based interface and CAD import/export capability HTiqErD2_  
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TracePro modeling capabilities are similar to LightTools but with significant weaknesses that make it harder to use and less flexible, and is especially limited in 3D texture modeling compared to LightTools Y^$^B,  
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TracePro analysis features are similar to LightTools, but LightTools is much stronger as an interactive design AND analysis tool

TracePro Weaknesses C%#=@HC  
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User Interface 9[K".VeT]  
Must move/rotate objects by dialog box only Y-\/Y*;cd  
Default naming convention (for spheres/elements, etc) is confusing and ambiguous ;/?M&rX  
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Modeling ))f%3_H  
Most elements cannot be edited 1M+o7HO.mG  
  Must be deleted and recreated (including optical properties) %&m/e?@%I  
No unboolean capability C5oslP/@  
Boolean limited to two objects at a time nI4Kuz`dF  
3D texture very limited vs. LT

TracePro Weaknesses ~ED8]*H|`  
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Ray Trace Ay\=&4dv  
No interactive (point & shoot) ray trace PqV9k,5f  
No point sources; no volume sources ( HCB\!g  
Clipped Lambertian sources are difficult (LED or fiber output) eF+:w:\h  
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Analysis LVNq@,s  
No illumination error estimate hu}`,2  
Only 4 preset bins “available” c\"t+/Z  
No 2D intensity distributions of full spheres / blVm1F  
Limited ray sorting options

LT Strengths vs. TracePro $|+q9o\  
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LT has excellent design features vs. TracePro *J^l r"%c  
Interactive ray trace `4^-@}  
Editable geometry x'IVP[xh`A  
More powerful macro language in LT (VB/COM/Excel/etc. vs. Scheme) XaT9`L<  
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TracePro features not fully or well implemented wdS4iQD  
3D textures /5cFa  
Source definition _,*ld#'s  
Many others

TracePro/LT Feature Checklist }:JE*D|  
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Recent LT features addressing TracePro competition ['9awgkr/  
New LT 4.0 User Interface
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Accelerated Ray Tracing (improved in 5.0) B~S"1EE[  
AOI and Wavelength Scattering capabilities +?"N5%a%F  
Powerful 3D texture modeling for backlights (greatly expanded in v5.1 available 12/04) hf5yTs  
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TracePro features not in LT L~x PIu  
Ray trace through GRIN material $P<T`3Jg  
Birefringent ray tracing

Misc. Comparisons, LT vs. TP "ecG\}R=  
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Some large CAD models consume 20-30% more RAM and more CPU time in TP vs. LT D@jG+k-Lm  
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TP CAD import repair feature much slower than LT }^T7S2_Qy  
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Inability to edit properties of Booleaned objects in TP (easy and unlimited in LT) 2|="!c8K  
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Luminance meter simulation is simple approximation in TP, much more flexible and accurate in LT LW+a-i  
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Most operations in LT can be done by mouse, by numeric input, or any combination (fewer TP features are mouse-enabled) Xz/5Wis4  
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LT online help is extensive and useful, but very limited in TP =m<; Jx5  
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ORA Tech Support for LT is by a dedicated team or experience illumination and optical engineers

3D Texture Comparisons +ZuT\P&kR5  
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3D texture modeling more flexible and much faster to ray trace in LT vs. TP 608}-J=3#  
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LT (5.1) has flexible features to parametrically vary all 3D texture features (spacing, size, angles, depth, etc.) by equation or by direct “placement lists” imported from spreadsheet or other software J<p.J3I  
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When optimization is available in 2005, these parametric textures will make it much easier to design backlight systems

Coming Soon in LightTools  O=,[u?  
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Photorealistic rendering will be introduced in LightTools in 2005 79DzrLu  
    Available now in TP, but feature is poorly implemented DC&3=Nd  
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Illumination optimization including special backlight design features will be introduced in 2005 4rcNBmA,  
    Has been demonstrated in papers, ORA demos, and limited customer testing in 2004 ~0;l\^  
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    Is now being developed for maximum ease of use for typical users and applications       without user programming

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