Project number
27066
Organization
ASML US, Inc.
Offering
ENGR498-F2026-S2027
ASML uses barcode scanners that use transmissive line scanning to read 1D barcodes on a 6mm thick quartz photomask. Mask has a coating that determines % light transmission. Dark regions in barcode made of this coating, Light region is simply plain quartz. Scanners perform well with ‘high-contrast’ coating : coating is optically dense which allows for clear contrast between dark and light.
Problem : Scanners cannot deal with ‘low contrast’ coating that is semi transparent (transmission > 35%). SNR is degraded
Deliverables :
- Define optical scheme (lens, diffusers, aperture stop, etc.) to collimate the source and achieve at least 50% contrast (defined as high – low / high + low) for low contrast targets
- Device should be passive (static lens)
- Subject to constraints in the table (see PDF attachment). Full design freedom otherwise
- Validate the solution in simulation and experiment. Experiment will need a test barcode sample (thickness 6mm with barcode engraved on absorber material that has transmission > 55% @ 470nm)
- Document findings in investigative report
***This project is conducting remote interviews. Please see remote interview sheet on BrightSpace (D2L) to schedule a time to speak to the sponsor.***
Problem : Scanners cannot deal with ‘low contrast’ coating that is semi transparent (transmission > 35%). SNR is degraded
Deliverables :
- Define optical scheme (lens, diffusers, aperture stop, etc.) to collimate the source and achieve at least 50% contrast (defined as high – low / high + low) for low contrast targets
- Device should be passive (static lens)
- Subject to constraints in the table (see PDF attachment). Full design freedom otherwise
- Validate the solution in simulation and experiment. Experiment will need a test barcode sample (thickness 6mm with barcode engraved on absorber material that has transmission > 55% @ 470nm)
- Document findings in investigative report
***This project is conducting remote interviews. Please see remote interview sheet on BrightSpace (D2L) to schedule a time to speak to the sponsor.***