iv • LightTools Introductory Tutorial
Contents
Trace a Ray Fan ..........................................................................................................36
Make a Cut..................................................................................................................38
Name the Object .........................................................................................................40
Changing Properties....................................................................................................41
Performing an Illumination Analysis.................................................................................43
Layers .........................................................................................................................43
Sources and Receivers ................................................................................................45
Simulation Info and Ray Preview...............................................................................45
Understanding Charts .................................................................................................47
Making the Big Run ...................................................................................................49
Analysis Results and Re-binning................................................................................50
Optical Properties Example: Paint It White.......................................................................52
Conclusions........................................................................................................................55
Chapter 4 Starting from Scratch: Build a Virtual Flashlight .......................57
What is a Wide-Angle Flashlight?.....................................................................................58
Start with the Reflector...............................................................................................58
Use the Place Reflector Buttons .................................................................................59
Curve the Back Surface ..............................................................................................60
Trace Some Rays ........................................................................................................61
Point Source and Receiver.................................................................................................63
Place a Point Source ...................................................................................................63
Run a Quick Illumination Simulation.........................................................................67
Adding a Detailed Source Model.......................................................................................70
Delete the Point Source ..............................................................................................71
Insert the Library Element..........................................................................................71
Make a Hole for the Lamp Base.................................................................................72
Re-run the Simulation.................................................................................................74
Save Your Work .........................................................................................................75
Create a Faceted Reflector.................................................................................................75
Delete the Smooth Reflector.......................................................................................76
Running Utilities.........................................................................................................76
Run an Illumination Simulation .................................................................................78
Create the Flashlight Body ................................................................................................80
Collar ..........................................................................................................................80
Create the Battery Compartment ................................................................................81
Join the Parts Using a Boolean Operation ..................................................................83
Conclusions........................................................................................................................84
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