How do you calculate optics scrap cost?

Multiply scrapped components by the average value per component, then multiply by the scrap tracking capture rate, and add the fixed failure-analysis cost. With 18 parts at $125, 85% capture and $300 fixed, that is 18 x 125 x 0.85 = $1,912.50 tracked, plus $300 = $2,212.50 total.

What does the capture rate mean here?

It is the fraction of scrap your tracking system actually records. An 85% capture rate means you only assume 85% of the at-risk scrap value is reliably attributable, so the calculator scales the tracked cost down to avoid over-claiming losses you cannot prove.

Why include a fixed failure-analysis cost?

Investigating an optics failure (cross-sectioning, interferometry, coating analysis, supplier RMA paperwork) costs money regardless of how many parts scrapped. The $300 fixed term captures that overhead so the total reflects true cost of quality, not just material value.

What is the average scrap cost per component?

Divide total scrap cost by the number of scrapped parts. Here $2,212.50 / 18 = $122.92 per part, which is higher than the $125 raw value times capture rate because the fixed analysis cost is spread across the 18 pieces.

What is a good optics scrap cost?

There is no universal target; benchmark it as a percentage of finished output value. Precision-optics lines often aim to keep total scrap cost under 3-5% of throughput value, with high-value coated or aspheric parts justifying tighter control.

How can I reduce optics scrap cost?

Attack the highest-value scrap first. Cutting chips and coating defects on a $125 part saves far more than the same count on a low-value blank, and improving capture rate gives you cleaner data to target the dominant failure modes.

Lasers, Optics & Photonics Manufacturing calculator

Optics Scrap Cost Calculator

Optics Scrap Cost quantifies the dollars lost to rejected lenses, windows, mirrors and coated substrates over a production period, including the fixed cost of investigating why they failed. Precision-optics and photonics shops use it because a single coated or polished part can carry hundreds of dollars of cumulative value by the time it scraps, so even small reject counts hit margin hard. Process and quality engineers run it to size the real cost of subsurface damage, coating defects and handling chips, and to justify spend on better fixturing, cleaning or metrology. Because it folds in a capture-rate adjustment, it gives a defensible number even when shop-floor scrap logging is incomplete.

What this calculator does

Calculate the total cost of scrapped optical components (lenses, prisms, windows, mirrors) by combining scrap count, average component value at point of failure, scrap capture rate, and fixed investigation or disposition cost.
Use this when quantifying scrap losses for a production lot, justifying investment in better polishing or coating equipment, or preparing a corrective action cost-benefit analysis.
It computes the total dollar cost of scrapped optical components over a period, combining tracked piece value with a fixed failure-analysis and disposition cost.

Formula used

Tracked scrap cost = scrapped components x average value per component x capture rate
Total optics scrap cost = tracked scrap cost + fixed failure analysis cost

Inputs explained

Scrapped optical components this period:
Average value per scrapped component:
Scrap tracking capture rate:
Fixed failure analysis and disposition cost:

How to use the result

Use it at period close or in a defect cost-of-quality review to size scrap losses on lenses, windows, mirrors or coated substrates and to build a business case for process improvement.
The capture rate scales the tracked value but cannot recover scrap that was never logged at all; if logging is badly broken, the true loss is higher than the tracked figure suggests.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
Industrial electricity averages 8.66 cents per kWh across the U.S. (EIA, Apr 2026), up 5.5% from a year earlier. Energy-intensive steps carry this directly into unit cost.
The U.S. has 11,261 computer and electronic products establishments employing about 815,443 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate optics scrap cost? Multiply scrapped components by the average value per component, then multiply by the scrap tracking capture rate, and add the fixed failure-analysis cost. With 18 parts at $125, 85% capture and $300 fixed, that is 18 x 125 x 0.85 = $1,912.50 tracked, plus $300 = $2,212.50 total.
What does the capture rate mean here? It is the fraction of scrap your tracking system actually records. An 85% capture rate means you only assume 85% of the at-risk scrap value is reliably attributable, so the calculator scales the tracked cost down to avoid over-claiming losses you cannot prove.
Why include a fixed failure-analysis cost? Investigating an optics failure (cross-sectioning, interferometry, coating analysis, supplier RMA paperwork) costs money regardless of how many parts scrapped. The $300 fixed term captures that overhead so the total reflects true cost of quality, not just material value.
What is the average scrap cost per component? Divide total scrap cost by the number of scrapped parts. Here $2,212.50 / 18 = $122.92 per part, which is higher than the $125 raw value times capture rate because the fixed analysis cost is spread across the 18 pieces.
What is a good optics scrap cost? There is no universal target; benchmark it as a percentage of finished output value. Precision-optics lines often aim to keep total scrap cost under 3-5% of throughput value, with high-value coated or aspheric parts justifying tighter control.

Last reviewed 2026-05-12.