Lasers, Optics & Photonics Manufacturing worked example

Optical Assembly Yield at 99% assembly yield target: a worked example

This scenario runs the optical assembly yield calculation on the strong side: 99% assembly yield target, with every other input held at its documented default. Use this when tracking assembly quality for multi-element optical systems, identifying whether alignment, bonding, or contamination is driving assembly failures, or validating process improvements.

The inputs for this scenario

  • Conforming assemblies (first-pass): 42 assemblies (unchanged)
  • Total assemblies built: 48 assemblies (unchanged)
  • Assembly yield target: 99 % (raised for this scenario; the documented default is 92)

Working through the calculation

  • Applying the documented formula (Optical assembly yield = conforming assemblies / total built x 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 87.5 % for optical assembly yield rate, the number this scenario is built around.
  • At this operating point the engine returns 11.5 points for gap to yield target.
  • At this operating point the engine returns 42 count for conforming assemblies.
  • At this operating point the engine returns 48 count for total assemblies built.

How this compares with the baseline

  • Against the tool's baseline example, where assembly yield target sits at 92% and the headline result is 87.5 %, this scenario lands almost exactly on the baseline at 87.5 %.
  • Use it at end-of-shift or end-of-lot to grade a build cell, qualify a new alignment process, or check whether a lot meets its contractual yield commitment. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Optical assembly yield rate: 87.5 % (headline result)
  • Gap to yield target: 11.5 points
  • Conforming assemblies: 42 count
  • Total assemblies built: 48 count

Run it with your numbers

  • Every input above is editable in the live Optical Assembly Yield calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.