Table of Contents
Announcements/Quick LinksWelcome to Week 11 of MSD2!
- Current Week Progress and Deliverable:
- Week 11:Technical Paper
- MSD2 Page:
- MSD 2 200803
- MSD1 Page:
- MSD 1 200802
The mission of P09701 is to design, build and test a working prototype of the second generation Corning Tropel LightGage Metrology System.
"Corning's LightGage system is an advanced, full surface interferometer for measuring flatness, parellelism, and depth." It uses a tunable laser, an infrared camera and mathematical computer algorithms to accurately measure the surface features of a part--and then displays a topographical map of the part's surface and all relevant data to the user. Corning Tropel's first generation LightGage system can measure and characterize the bottom of a part's surface, but cannot characterize the top surface or the part thickness.
Due to the extreme accuracy needed from this product, the system will need to be isolated thermally, environmentally, optically, and must be completely isolated from vibration. This project will involve extensive electronics integration, mechanical design, thermal and vibrational analysis, as well as materials research and selection. Advanced optical sensors, linear stages, programming and data acquisition will be a large part of this project. This project will also emphasize usability and ergonomics, and user interfacing.
This project promises to be very challenging, but should also be very rewarding. Not only will students be working with cutting-edge optical and laser technology, but they will also be developing a product never before created in this form factor. Possible opportunities for future employment or co-op may also be considered if team members should have a desire and appear qualified.
The project marketing presentation can be found here.
- Project Staffing
|Matthew Bradley||Mechanical Engineeringfirstname.lastname@example.org|
|Cara Portka||Industrial & Systems Engineeringemail@example.com|
|Benjamin Arkin||Electrical Engineeringfirstname.lastname@example.org|
|Nicholas Schneider||Mechanical Engineeringemail@example.com|
|Project Name||Corning Tropel LightGageTM Metrology System|
|Faculty Guide||Dr. Alan D. Raisanen|
|Technical Consultant||Dr. Edward Hensel, PE|
|Primary Customer||Corning Tropel Corporation|
- Primary Customer Contact Information
- Thomas J. Dunn, Ph.D.
- Senior Optical Engineer
- Metrology Instruments Group
- 60 O'Connor Road
- Fairport, NY 14450
- t 585 388 3500 (main)
- Frequency-Scanning Interferometry Tech. Resources (Corning Tropel)
- LightGage Tech. Paper 1
- LightGage Tech. Paper 2
- LightGage Tech. Overview
- DPM Resources/Documents
- Interview 1 Questions (3/20/08)
- Interview 2 Questions (3/27/08)
- Project Status Update (4/9/08)
- Tentative MSD1 Schedule (4/14/08)
- Meeting 3 Objectives/Questions (4/16/08)
- Final Project Presentation (5/17/08)
- 5-Minute Commercial (5/20/08)
- Useful Links
- AirPot Corporation
- P09701 Deliverables PowerPoint Template
Tech. Background Information
- The following is a basic tech. summary of how the LightGage system works. It is highly recommended that each team member read--in detail--the documents listed above.
- The system uses a patented tunable laser diode (TLD) that allows the laser frequencies to be "tuned" in predefined increments. This allows for much higher dynamic range with similar resolution to traditional phase modulation interferometry (PMI).
- The light is delivered to the optics inside the LightGage head via fiber optic line.
- The light passes through a rotating diffuser disk and up to the objective lens.
- Once it passes through the objective lens, the light beam is expanded, and passes through the Fizeau plate. The Fizeau plate serves as a reference surface, and is assumed perfectly smooth.
- The object under scrutiny is placed on the Fizeau plate, or Fizeau window, and is typically offset-gapped by a harp (very thin wires of known diameter stretched across the Fizeau plate).
- Some of the infrared light is reflected off of the Fizeau plate to the camera, while the rest bounces off of the object and back to the camera.
- Because the light had to travel different distances, the camera sees and records an interference pattern (light and dark fringes).
- The laser frequencies are then "tuned" in predefined increments, causing the fringes to move.
- The camera then records the pattern of light intensity each pixel sees, resulting in a sine wave.
- A computer algorithm can then determine the absolute distance between the reference surface and the surface of the object. A computer program then generates a map of the part's surface, which is displayed to the user. The image below (found in the LightGage Tech. Overview presentation) gives examples of how the LightGage displays measurement data.
- The PRP contains:
- Business case for design project
- Customer interviews and needs assessments
- Customer needs translated into engineering specifications
- Resource assessments
- Staffing requirements
- Project schedule/timeline/milestones
Tools were developed for assessing feasibility of design concepts and conducting engineering tradeoffs analyses during preliminary design phase. Prepared project materials and documentation for design project beginning in December 2008 are stored in this node.
As you conclude the project, include links to all of your finished and fully polished documents here. The previous sections of the web site contain the entire design history of your project. This section contains the finished products. Add more links as needed.
Concept Design Review Documents (SD I)
Detailed Design Review Documents (SD I)
Managerial Design Review Presentation (SD I)
Technical Conference Publication (SD II)
Poster Publication (SD II)
Managerial Design Review Presentation (SD II)