What you will do• Model the imaging path in Zemax. Simulate the full optical train — schematic eye, ophthalmoscopy lens, relay optics and the smartphone camera — in sequential mode.
• Optimise image quality. Tune field of view, resolution (MTF), distortion and working distance, and check performance across our validated handsets.
• Design the illumination. Simulate the LED source, annular illumination and polarisers in non-sequential mode, and suppress corneal and lens reflections.
• Check light safety. Calculate retinal exposure and keep it within ISO 15004-2 and IEC 62471 limits.
• Tolerance for manufacture. Run tolerance analysis and turn the results into lens and assembly specifications a vendor can build to.
• Design the hardware. Work with the team in CAD on the lens barrel, phone clamp and alignment features that hold your optical design in place.
• Prototype and test. Build 3D-printed prototypes with off-the-shelf lenses, test them on a model eye, and compare results with your simulations.
• Document everything. Keep lens prescriptions, Zemax files,



test results and the bill of materials ready for our regulatory technical file.

Must have• Your own working access to Zemax OpticStudio (personal or institutional licence) for the whole internship. We do not provide a licence.
• Pursuing or completed a B.Tech, M.Tech or M.Sc in optics, photonics, physics, electrical or mechanical engineering.
• Strong geometric optics: aberrations, stops and pupils, paraxial design and MTF.
• Hands-on sequential design in Zemax: lens data editor, merit functions, optimisation and tolerancing.
• Working knowledge of a CAD tool such as Fusion 360 or SolidWorks.
• Transparent written documentation of your design choices and results.

Good to have• Non-sequential and illumination design, including stray-light analysis.
• Knowledge of ophthalmic optics, schematic eye models (such as Liou-Brennan or Navarro) or fundus imaging.
• Experience with smartphone camera modules or compact imaging s

📌 Optical & Hardware Design Intern (Bengaluru)
🏢 PulseForge Labs
📍 Bengaluru