156B Week 9

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Design is assembled and tested

    • We were able to capture fringes!

    • A bit sensitive, and hard to capture image right now without physical aid

      • Currently working on a test stand for the system

    • Tested two designs:

      • Design 1: Larger field of view, smaller magnification

        • Experimental results: 

          • resolution of image was not good enough for image processing

          • OK field of view

      • Design 2: Smaller field of view, larger magnification

        • Experimental results:

          • resolution of the image was perfect for image processing

          • limited field of view

      • Conclusion:

        • Using the smartphone's image sensor for this purpose is limited. Because we are working with off-the-shelf lenses, having a larger field of view with a large magnification is nearly impossible to accomplish.

        • Both designs, despite Design 1 having a larger field of view, are very, very sensitive to hand tremors. Difficult to get a good image of the sensor, without capturing multiple images through video.

        • Changing design requirements, from "hand-held", to stationary.

Accomplishments from Previous Week

• • Purchased and assembled optical setup from Thorlabs (Zijun, Winnie)

  • Tested and calibrated the system (Zijun, Winnie)

    • Captured good fringes, but not by "freestyling"

  • Designed a casing for the setup with a locking ring mechanism (Andy)

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Finish housing design (includes the housing for power-source) (Andy, Winnie)

  • Wrap up translating image processing code (Mihir, Zijun)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • NA

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • NA

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • NA

Risks and Areas of Concern

• • NA

Resources or Information Required but not Available

• • NA

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent: $1,598.78

  • Remaining: $0 (Sponsors agreed to purchase)

Progress on Report and Webpage

• • 2nd draft of report was finished and uploaded

  • 2nd draft of webpage was finished