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LightTools 8.6 introduces a tolerance analysis capability to help you analyze the impact of manufacturing tolerances and assembly errors on the performance of your design.
The effect of component position errors on performance can be assessed by adding the coordinates and rotation angles of each element as tolerances. There are two ways you can include position tolerances of components for a tolerance analysis: add the position tolerances as independent tolerances, or add a Position Tolerance collection. While the resulting tolerances will be similar, their implementations have a couple of key differences, which we will discuss in this Enews.
1. Add each position coordinate as independent tolerances:
Most editable fields can be added as tolerances in LightTools, and this includes the X, Y, Z, Alpha, Beta, and Gamma coordinates. If the component is part of a group, the absolute or relative coordinates can be added as tolerances.
To add a tolerance, right-click on the parameter you wish to add as a tolerance and choose “Add Tolerance”:
The added tolerance will appear in the Tolerancing Input window:
If you want to add multiple coordinate tolerances, you can alternatively right-click on a component to add 3 tolerances with a single click! If you choose “Add X, Y, and Z Tolerances”, it will add X, Y, and Z tolerances. Similarly, if you choose “Add Alpha, Beta, and Gamma Tolerances”, it will add Alpha, Beta, and Gamma tolerances.
Choosing this option is a quick way to add 3 or 6 independent position tolerances for the component.
Note: “Add X, Y, and Z Tolerances” and “Add Alpha, Beta, and Gamma Tolerances” will add the component’s absolute coordinates as tolerances. Relative coordinate tolerances need to be added one at a time.
2. Add a position tolerance collection:
If you right-click on a component and choose “Add Position Tolerance”, this adds a collection of X, Y, Z, Alpha, Beta, and Gamma tolerances.
The position tolerance will always have the 6 position parameters, however you can right-click on any tolerances you wish to omit and choose “Disable”:
The position tolerance collection has a few key distinctions compared to adding the 6 position tolerances independently:
While the above figures show a uniform probability, it is also possible to pair other probability distributions as well, for more realistic tolerance values. For example, when the X and Y position tolerances are set to a Distribution Type > Gaussian Distribution, the paired probability distribution becomes:
For more on LightTools Tolerancing capabilities, you can watch the collection of Tolerancing videos in the LightTools 8.6 New Feature Videos, or the recording of the LightTools Tolerancing Tutorial Webinar.
Learn more about the Tolerance Analysis feature in LightTools 8.6 by viewing our webinar from the Customer Support Portal, which provides information about:
The Synopsys Optical Solutions Group accepts requests for data to be added to our software libraries. Upon request, we will measure or obtain optical data for inclusion into our libraries for commercially-available materials, optical properties, surface finishes, light sources, catalog optics, etc.
Requests can be made via email to osg-libraries@synopsys.com.
Join us for our annual LightTools User Group Meeting for lectures, discussions, and presentations developed by Synopsys Optical Solutions Group's technical support and engineering staff. The live, in-person meetings start at 9:00 a.m. and end at 4:30 p.m. Complimentary lunch, as well as morning and afternoon refreshments, will be provided.
Attend a live meeting:
Tuesday, September 18, 2018
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Kelvin Room
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Tuesday, September 25, 2018
DoubleTree by Hilton Atlanta - Buckhead
3342 Peachtree Road NE
Atlanta, GA 30326
Save these dates for the three-part webinar series:
Thursday, September 20, 2018
10:30 a.m. - 12:00 p.m. PDT
Thursday, September 27, 2018
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Thursday, October 4, 2018
10:30 a.m. - 12:00 p.m. PDT
We are taking registrations for our upcoming LightTools training sessions. Visit our website for more information, and to register online today. Seats are limited, minimum enrollments apply.
October 1-3, 2018
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Building 2, Shannon Room
445 North Mary Avenue
Sunnyvale, CA 94085
November 5-7, 2018
Synopsys, Inc.
Building B
690 E. Middlefield Road
Mountain View, CA 94043
Wednesday, August 22, 2018
12:00 – 2:00 p.m.
Marriott Marquis San Diego Marina
Bayside Pavilion Room
333 W Harbor Dr.
San Diego, CA 92101
Synopsys' Optical Solutions Group cordially invites you to a luncheon reception at the SPIE Optics + Photonics conference in San Diego, CA. Join us for food and drinks, talk with our LightTools experts, share ideas with other users, and learn about our latest software innovations.
In addition, Donald O'Shea, Professor Emeritus of Georgia Institute of Technology, and Julie Bentley, Associate Professor of Optics at University of Rochester, will be available to sign copies of their new book to be published by SPIE Press, "Designing Optics Using CODE V." The book demonstrates how to design optical systems using CODE V, from lens definition to the description and evaluation of lens errors and onto the improvement of lens performance.
Please RSVP before August 15 if you plan to attend the reception. We hope to see you there!
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