156B Week 3

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

• • Learning Zemax (in progress)

    • Will soon be trying to model our current preliminary design, and experimenting with the optimization function for refinement.

  • Learning app development (in progress)

  • Design of experimental set-up for lens system (in progress)

Accomplishments from Previous Week

• • Created basic MATLAB script to model the three lens design.

    • Script will output the focal lengths of the three lenses, the distances of the image and the object, the total magnification, and the total length of the system.

  • Refined problem definition

    • Light source problem: currently, the system has very, very low power intensity which will potentially lead to a dark, unclear image

  • Zemax: 

    • Downloaded trial, currently exploring the capabilities of the software

  • Further lens design and optics literature review

    • Burning through relevant chapters/sections in "Lens Design: A Practical Guide" by Haiyin Sun. 

  • Sketched a design for the optical test setup for confirming simulation results

    • Found out that Talke's lab already has some optical components which can be used for experimentally implementing our lens system.

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

• • Optics System

    • Implement preliminary design of lens system on Zemax (Winnie)

    • Experiment with the optimization function in Zemax so the design can be refined (Winnie)

    • Further literature review and skill in using Zemax (Winnie)

  • Test Hardware

    • Determine which components that we do not have, but needed for experimental set up. (Andy, Winnie)

      • CAD + 3D Print or purchase missing components (Andy)

  • Smartphone App

    • Have a layout the app design and structure (Andy)

    • Continue learning about app development (Andy)

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

• • N/A

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

• • Connected us with Peter for Zemax software access (4/9)

    • Contacted Peter and he could possibly help us out with access

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

• • N/A

Risks and Areas of Concern

• • The current optics system design, which is modeled after a microscope, relies on a projected virtual image as the final product. However, this projected virtual image involves diverging rays which may potentially not be captured by the smartphone camera. Hence, given that the permissible light source is already very, very low (4uw), having this light source diverge as it passes through the lens system is concerning and will possibly lead to a very dark image.

Resources or Information Required but not Available

• • Introduction to Lens Design: With Practical Zemax Examples Textbook

    • Does any professor have this lying in their bookshelf? There are not too many "friendly" and comprehensive tutorials on using Zemax online. This book is widely recommended by Zemax users.

Schedule

• • Simulate current design on Zemax and make modifications (end of Week 3).

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent: $0

  • Remaining: $1500

Progress on Report and Webpage

• • Report Draft 1 is completed 

  • Report posted on Webpage

  • Webpage updated with ECE partners info